<?xml version="1.0" encoding="US-ASCII"?>
<!--XBRL Document Created with Wdesk from Workiva-->
<!-- -->
<link:linkbase xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedPeriodStartLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedPeriodStartLabel" xlink:type="simple" />
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/netLabel" xlink:href="http://www.xbrl.org/lrr/role/net-2009-12-16.xsd#netLabel" xlink:type="simple" />
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedNetLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedNetLabel" xlink:type="simple" />
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedTerseLabel" xlink:type="simple" />
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedPeriodEndLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedPeriodEndLabel" xlink:type="simple" />
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedLabel" xlink:type="simple" />
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedTotalLabel" xlink:type="simple" />
  <link:labelLink xlink:role="http://www.xbrl.org/2003/role/link" xlink:type="extended">
    <link:label id="lab_us-gaap_OtherIncomeAndExpensesAbstract_58016C04E6D95CC2C03B51F92328BABA_label_en-US" xlink:label="lab_us-gaap_OtherIncomeAndExpensesAbstract_58016C04E6D95CC2C03B51F92328BABA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Income and Expenses [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherIncomeAndExpensesAbstract" xlink:label="loc_us-gaap_OtherIncomeAndExpensesAbstract_58016C04E6D95CC2C03B51F92328BABA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherIncomeAndExpensesAbstract_58016C04E6D95CC2C03B51F92328BABA" xlink:to="lab_us-gaap_OtherIncomeAndExpensesAbstract_58016C04E6D95CC2C03B51F92328BABA" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherIncomeAndOtherExpenseDisclosureTextBlock_9D10CF44E8848BFF451D51F923288F54_terseLabel_en-US" xlink:label="lab_us-gaap_OtherIncomeAndOtherExpenseDisclosureTextBlock_9D10CF44E8848BFF451D51F923288F54" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other Income (Expense), Net</link:label>
    <link:label id="lab_us-gaap_OtherIncomeAndOtherExpenseDisclosureTextBlock_9D10CF44E8848BFF451D51F923288F54_label_en-US" xlink:label="lab_us-gaap_OtherIncomeAndOtherExpenseDisclosureTextBlock_9D10CF44E8848BFF451D51F923288F54" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Income and Other Expense Disclosure [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherIncomeAndOtherExpenseDisclosureTextBlock" xlink:label="loc_us-gaap_OtherIncomeAndOtherExpenseDisclosureTextBlock_9D10CF44E8848BFF451D51F923288F54" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherIncomeAndOtherExpenseDisclosureTextBlock_9D10CF44E8848BFF451D51F923288F54" xlink:to="lab_us-gaap_OtherIncomeAndOtherExpenseDisclosureTextBlock_9D10CF44E8848BFF451D51F923288F54" xlink:type="arc" />
    <link:label id="lab_us-gaap_SegmentReportingAbstract_EB1310D2BBB5FCC1AC2AC567476553BF_label_en-US" xlink:label="lab_us-gaap_SegmentReportingAbstract_EB1310D2BBB5FCC1AC2AC567476553BF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Segment Reporting [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentReportingAbstract" xlink:label="loc_us-gaap_SegmentReportingAbstract_EB1310D2BBB5FCC1AC2AC567476553BF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SegmentReportingAbstract_EB1310D2BBB5FCC1AC2AC567476553BF" xlink:to="lab_us-gaap_SegmentReportingAbstract_EB1310D2BBB5FCC1AC2AC567476553BF" xlink:type="arc" />
    <link:label id="lab_us-gaap_SegmentReportingDisclosureTextBlock_99632D4E6BC6F3A0F2AFC5674765ED44_terseLabel_en-US" xlink:label="lab_us-gaap_SegmentReportingDisclosureTextBlock_99632D4E6BC6F3A0F2AFC5674765ED44" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Segment Information</link:label>
    <link:label id="lab_us-gaap_SegmentReportingDisclosureTextBlock_99632D4E6BC6F3A0F2AFC5674765ED44_label_en-US" xlink:label="lab_us-gaap_SegmentReportingDisclosureTextBlock_99632D4E6BC6F3A0F2AFC5674765ED44" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Segment Reporting Disclosure [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentReportingDisclosureTextBlock" xlink:label="loc_us-gaap_SegmentReportingDisclosureTextBlock_99632D4E6BC6F3A0F2AFC5674765ED44" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SegmentReportingDisclosureTextBlock_99632D4E6BC6F3A0F2AFC5674765ED44" xlink:to="lab_us-gaap_SegmentReportingDisclosureTextBlock_99632D4E6BC6F3A0F2AFC5674765ED44" xlink:type="arc" />
    <link:label id="lab_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_30600F1F5133BF0F0315C5674A4342C7_label_en-US" xlink:label="lab_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_30600F1F5133BF0F0315C5674A4342C7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill and Intangible Assets Disclosure [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract" xlink:label="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_30600F1F5133BF0F0315C5674A4342C7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_30600F1F5133BF0F0315C5674A4342C7" xlink:to="lab_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_30600F1F5133BF0F0315C5674A4342C7" xlink:type="arc" />
    <link:label id="lab_us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock_D3789CAD7F345D029AA1C5674A437FDF_terseLabel_en-US" xlink:label="lab_us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock_D3789CAD7F345D029AA1C5674A437FDF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Intangibles</link:label>
    <link:label id="lab_us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock_D3789CAD7F345D029AA1C5674A437FDF_label_en-US" xlink:label="lab_us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock_D3789CAD7F345D029AA1C5674A437FDF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill and Intangible Assets Disclosure [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock" xlink:label="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock_D3789CAD7F345D029AA1C5674A437FDF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock_D3789CAD7F345D029AA1C5674A437FDF" xlink:to="lab_us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock_D3789CAD7F345D029AA1C5674A437FDF" xlink:type="arc" />
    <link:label id="lab_us-gaap_EarningsPerShareAbstract_9CC462808F5517A327F48DA5A341175E_label_en-US" xlink:label="lab_us-gaap_EarningsPerShareAbstract_9CC462808F5517A327F48DA5A341175E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Earnings Per Share [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerShareAbstract" xlink:label="loc_us-gaap_EarningsPerShareAbstract_9CC462808F5517A327F48DA5A341175E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EarningsPerShareAbstract_9CC462808F5517A327F48DA5A341175E" xlink:to="lab_us-gaap_EarningsPerShareAbstract_9CC462808F5517A327F48DA5A341175E" xlink:type="arc" />
    <link:label id="lab_wab_EarningsPerShareNumeratorActivityAbstract_8FC47D7035C0B65C507F8DA5A3420EB4_terseLabel_en-US" xlink:label="lab_wab_EarningsPerShareNumeratorActivityAbstract_8FC47D7035C0B65C507F8DA5A3420EB4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Numerator</link:label>
    <link:label id="lab_wab_EarningsPerShareNumeratorActivityAbstract_8FC47D7035C0B65C507F8DA5A3420EB4_label_en-US" xlink:label="lab_wab_EarningsPerShareNumeratorActivityAbstract_8FC47D7035C0B65C507F8DA5A3420EB4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Earnings Per Share Numerator Activity [Abstract]</link:label>
    <link:label id="lab_wab_EarningsPerShareNumeratorActivityAbstract_8FC47D7035C0B65C507F8DA5A3420EB4_documentation_en-US" xlink:label="lab_wab_EarningsPerShareNumeratorActivityAbstract_8FC47D7035C0B65C507F8DA5A3420EB4" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Earnings Per Share Numerator Activity [Abstract]</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_EarningsPerShareNumeratorActivityAbstract" xlink:label="loc_wab_EarningsPerShareNumeratorActivityAbstract_8FC47D7035C0B65C507F8DA5A3420EB4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_EarningsPerShareNumeratorActivityAbstract_8FC47D7035C0B65C507F8DA5A3420EB4" xlink:to="lab_wab_EarningsPerShareNumeratorActivityAbstract_8FC47D7035C0B65C507F8DA5A3420EB4" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetIncomeLoss_DEAB877B3874472D20DF8DA5A342BE67_terseLabel_en-US" xlink:label="lab_us-gaap_NetIncomeLoss_DEAB877B3874472D20DF8DA5A342BE67" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net (loss) income attributable to Wabtec shareholders</link:label>
    <link:label id="lab_us-gaap_NetIncomeLoss_DEAB877B3874472D20DF8DA5A342BE67_label_en-US" xlink:label="lab_us-gaap_NetIncomeLoss_DEAB877B3874472D20DF8DA5A342BE67" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Income (Loss) Attributable to Parent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_DEAB877B3874472D20DF8DA5A342BE67" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetIncomeLoss_DEAB877B3874472D20DF8DA5A342BE67" xlink:to="lab_us-gaap_NetIncomeLoss_DEAB877B3874472D20DF8DA5A342BE67" xlink:type="arc" />
    <link:label id="lab_us-gaap_DividendsCash_766FAA83F7FA035C61D08DA5A34261DC_negatedLabel_en-US" xlink:label="lab_us-gaap_DividendsCash_766FAA83F7FA035C61D08DA5A34261DC" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Less: dividends declared - common shares and non-vested restricted stock</link:label>
    <link:label id="lab_us-gaap_DividendsCash_766FAA83F7FA035C61D08DA5A34261DC_label_en-US" xlink:label="lab_us-gaap_DividendsCash_766FAA83F7FA035C61D08DA5A34261DC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Dividends, Cash</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DividendsCash" xlink:label="loc_us-gaap_DividendsCash_766FAA83F7FA035C61D08DA5A34261DC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DividendsCash_766FAA83F7FA035C61D08DA5A34261DC" xlink:to="lab_us-gaap_DividendsCash_766FAA83F7FA035C61D08DA5A34261DC" xlink:type="arc" />
    <link:label id="lab_us-gaap_UndistributedEarnings_159D8B782493F8F6C38D8DA5A343E661_totalLabel_en-US" xlink:label="lab_us-gaap_UndistributedEarnings_159D8B782493F8F6C38D8DA5A343E661" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Undistributed earnings</link:label>
    <link:label id="lab_us-gaap_UndistributedEarnings_159D8B782493F8F6C38D8DA5A343E661_label_en-US" xlink:label="lab_us-gaap_UndistributedEarnings_159D8B782493F8F6C38D8DA5A343E661" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Undistributed Earnings, Basic</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UndistributedEarnings" xlink:label="loc_us-gaap_UndistributedEarnings_159D8B782493F8F6C38D8DA5A343E661" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_UndistributedEarnings_159D8B782493F8F6C38D8DA5A343E661" xlink:to="lab_us-gaap_UndistributedEarnings_159D8B782493F8F6C38D8DA5A343E661" xlink:type="arc" />
    <link:label id="lab_wab_PercentageOfNetIncomeAllocatedToCommonShareholders_A3501F2D4F5420711C9B8DA5A3430C6F_terseLabel_en-US" xlink:label="lab_wab_PercentageOfNetIncomeAllocatedToCommonShareholders_A3501F2D4F5420711C9B8DA5A3430C6F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Percentage allocated to common shareholders (as a percent)</link:label>
    <link:label id="lab_wab_PercentageOfNetIncomeAllocatedToCommonShareholders_A3501F2D4F5420711C9B8DA5A3430C6F_label_en-US" xlink:label="lab_wab_PercentageOfNetIncomeAllocatedToCommonShareholders_A3501F2D4F5420711C9B8DA5A3430C6F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Percentage Of Net Income Allocated To Common Shareholders</link:label>
    <link:label id="lab_wab_PercentageOfNetIncomeAllocatedToCommonShareholders_A3501F2D4F5420711C9B8DA5A3430C6F_documentation_en-US" xlink:label="lab_wab_PercentageOfNetIncomeAllocatedToCommonShareholders_A3501F2D4F5420711C9B8DA5A3430C6F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Percentage allocated to common shareholders.</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_PercentageOfNetIncomeAllocatedToCommonShareholders" xlink:label="loc_wab_PercentageOfNetIncomeAllocatedToCommonShareholders_A3501F2D4F5420711C9B8DA5A3430C6F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_PercentageOfNetIncomeAllocatedToCommonShareholders_A3501F2D4F5420711C9B8DA5A3430C6F" xlink:to="lab_wab_PercentageOfNetIncomeAllocatedToCommonShareholders_A3501F2D4F5420711C9B8DA5A3430C6F" xlink:type="arc" />
    <link:label id="lab_wab_UndistributedEarningsAllocatedToCommonShareholders_203912EF4D1B18EECAC38DA5A343D55E_terseLabel_en-US" xlink:label="lab_wab_UndistributedEarningsAllocatedToCommonShareholders_203912EF4D1B18EECAC38DA5A343D55E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Undistributed earnings allocated to common shareholders</link:label>
    <link:label id="lab_wab_UndistributedEarningsAllocatedToCommonShareholders_203912EF4D1B18EECAC38DA5A343D55E_label_en-US" xlink:label="lab_wab_UndistributedEarningsAllocatedToCommonShareholders_203912EF4D1B18EECAC38DA5A343D55E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Undistributed Earnings Allocated To Common Shareholders</link:label>
    <link:label id="lab_wab_UndistributedEarningsAllocatedToCommonShareholders_203912EF4D1B18EECAC38DA5A343D55E_documentation_en-US" xlink:label="lab_wab_UndistributedEarningsAllocatedToCommonShareholders_203912EF4D1B18EECAC38DA5A343D55E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The amount of undistributed earnings allocated to common shareholders for the periods presented.</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_UndistributedEarningsAllocatedToCommonShareholders" xlink:label="loc_wab_UndistributedEarningsAllocatedToCommonShareholders_203912EF4D1B18EECAC38DA5A343D55E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_UndistributedEarningsAllocatedToCommonShareholders_203912EF4D1B18EECAC38DA5A343D55E" xlink:to="lab_wab_UndistributedEarningsAllocatedToCommonShareholders_203912EF4D1B18EECAC38DA5A343D55E" xlink:type="arc" />
    <link:label id="lab_wab_DividendsDeclaredCommonShares_53A5C63D501523622ECC8DA5A34349FC_terseLabel_en-US" xlink:label="lab_wab_DividendsDeclaredCommonShares_53A5C63D501523622ECC8DA5A34349FC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Add: dividends declared - common shares</link:label>
    <link:label id="lab_wab_DividendsDeclaredCommonShares_53A5C63D501523622ECC8DA5A34349FC_label_en-US" xlink:label="lab_wab_DividendsDeclaredCommonShares_53A5C63D501523622ECC8DA5A34349FC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Dividends Declared Common Shares</link:label>
    <link:label id="lab_wab_DividendsDeclaredCommonShares_53A5C63D501523622ECC8DA5A34349FC_documentation_en-US" xlink:label="lab_wab_DividendsDeclaredCommonShares_53A5C63D501523622ECC8DA5A34349FC" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Dividends declared common shares.</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_DividendsDeclaredCommonShares" xlink:label="loc_wab_DividendsDeclaredCommonShares_53A5C63D501523622ECC8DA5A34349FC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_DividendsDeclaredCommonShares_53A5C63D501523622ECC8DA5A34349FC" xlink:to="lab_wab_DividendsDeclaredCommonShares_53A5C63D501523622ECC8DA5A34349FC" xlink:type="arc" />
    <link:label id="lab_wab_NumeratorForBasicAndDilutedEarningsPerCommonShare_2F1B63A90C4C8E4BFB508DA5A343AFBB_totalLabel_en-US" xlink:label="lab_wab_NumeratorForBasicAndDilutedEarningsPerCommonShare_2F1B63A90C4C8E4BFB508DA5A343AFBB" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Numerator for basic and diluted earnings per common share</link:label>
    <link:label id="lab_wab_NumeratorForBasicAndDilutedEarningsPerCommonShare_2F1B63A90C4C8E4BFB508DA5A343AFBB_label_en-US" xlink:label="lab_wab_NumeratorForBasicAndDilutedEarningsPerCommonShare_2F1B63A90C4C8E4BFB508DA5A343AFBB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Numerator For Basic And Diluted Earnings Per Common Share</link:label>
    <link:label id="lab_wab_NumeratorForBasicAndDilutedEarningsPerCommonShare_2F1B63A90C4C8E4BFB508DA5A343AFBB_documentation_en-US" xlink:label="lab_wab_NumeratorForBasicAndDilutedEarningsPerCommonShare_2F1B63A90C4C8E4BFB508DA5A343AFBB" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Numerator for basic and diluted earnings per common share.</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_NumeratorForBasicAndDilutedEarningsPerCommonShare" xlink:label="loc_wab_NumeratorForBasicAndDilutedEarningsPerCommonShare_2F1B63A90C4C8E4BFB508DA5A343AFBB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_NumeratorForBasicAndDilutedEarningsPerCommonShare_2F1B63A90C4C8E4BFB508DA5A343AFBB" xlink:to="lab_wab_NumeratorForBasicAndDilutedEarningsPerCommonShare_2F1B63A90C4C8E4BFB508DA5A343AFBB" xlink:type="arc" />
    <link:label id="lab_wab_EarningsPerShareDenominatorActivityAbstract_F0BEE937007415C97FF28DA5A34338FE_terseLabel_en-US" xlink:label="lab_wab_EarningsPerShareDenominatorActivityAbstract_F0BEE937007415C97FF28DA5A34338FE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Denominator</link:label>
    <link:label id="lab_wab_EarningsPerShareDenominatorActivityAbstract_F0BEE937007415C97FF28DA5A34338FE_label_en-US" xlink:label="lab_wab_EarningsPerShareDenominatorActivityAbstract_F0BEE937007415C97FF28DA5A34338FE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Earnings Per Share Denominator Activity [Abstract]</link:label>
    <link:label id="lab_wab_EarningsPerShareDenominatorActivityAbstract_F0BEE937007415C97FF28DA5A34338FE_documentation_en-US" xlink:label="lab_wab_EarningsPerShareDenominatorActivityAbstract_F0BEE937007415C97FF28DA5A34338FE" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Earnings Per Share Denominator Activity [Abstract]</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_EarningsPerShareDenominatorActivityAbstract" xlink:label="loc_wab_EarningsPerShareDenominatorActivityAbstract_F0BEE937007415C97FF28DA5A34338FE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_EarningsPerShareDenominatorActivityAbstract_F0BEE937007415C97FF28DA5A34338FE" xlink:to="lab_wab_EarningsPerShareDenominatorActivityAbstract_F0BEE937007415C97FF28DA5A34338FE" xlink:type="arc" />
    <link:label id="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_437174C892ADB6D94F468DA5A3442CE8_verboseLabel_en-US" xlink:label="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_437174C892ADB6D94F468DA5A3442CE8" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Basic weighted average common shares outstanding (in shares)</link:label>
    <link:label id="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_437174C892ADB6D94F468DA5A3442CE8_label_en-US" xlink:label="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_437174C892ADB6D94F468DA5A3442CE8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Weighted Average Number of Shares Outstanding, Basic</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_437174C892ADB6D94F468DA5A3442CE8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_437174C892ADB6D94F468DA5A3442CE8" xlink:to="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_437174C892ADB6D94F468DA5A3442CE8" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_606623BD465E3361B61D8DA5A34471D9_terseLabel_en-US" xlink:label="lab_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_606623BD465E3361B61D8DA5A34471D9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Assumed conversion of dilutive stock-based compensation plans (in shares)</link:label>
    <link:label id="lab_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_606623BD465E3361B61D8DA5A34471D9_label_en-US" xlink:label="lab_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_606623BD465E3361B61D8DA5A34471D9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements" xlink:label="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_606623BD465E3361B61D8DA5A34471D9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_606623BD465E3361B61D8DA5A34471D9" xlink:to="lab_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_606623BD465E3361B61D8DA5A34471D9" xlink:type="arc" />
    <link:label id="lab_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_FA47FBCB8DB5B58BE93F8DA5A3442A0D_totalLabel_en-US" xlink:label="lab_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_FA47FBCB8DB5B58BE93F8DA5A3442A0D" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Denominator for diluted earnings per common share - adjusted weighted average shares and assumed conversion (in shares)</link:label>
    <link:label id="lab_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_FA47FBCB8DB5B58BE93F8DA5A3442A0D_label_en-US" xlink:label="lab_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_FA47FBCB8DB5B58BE93F8DA5A3442A0D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Weighted Average Number of Shares Outstanding, Diluted</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_FA47FBCB8DB5B58BE93F8DA5A3442A0D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_FA47FBCB8DB5B58BE93F8DA5A3442A0D" xlink:to="lab_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_FA47FBCB8DB5B58BE93F8DA5A3442A0D" xlink:type="arc" />
    <link:label id="lab_us-gaap_EarningsPerShareBasicAndDilutedAbstract_AADC698EBA85718DED018DA5A3444293_verboseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareBasicAndDilutedAbstract_AADC698EBA85718DED018DA5A3444293" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Net income attributable to Wabtec shareholders per common share</link:label>
    <link:label id="lab_us-gaap_EarningsPerShareBasicAndDilutedAbstract_AADC698EBA85718DED018DA5A3444293_label_en-US" xlink:label="lab_us-gaap_EarningsPerShareBasicAndDilutedAbstract_AADC698EBA85718DED018DA5A3444293" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Earnings Per Share, Basic and Diluted [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerShareBasicAndDilutedAbstract" xlink:label="loc_us-gaap_EarningsPerShareBasicAndDilutedAbstract_AADC698EBA85718DED018DA5A3444293" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EarningsPerShareBasicAndDilutedAbstract_AADC698EBA85718DED018DA5A3444293" xlink:to="lab_us-gaap_EarningsPerShareBasicAndDilutedAbstract_AADC698EBA85718DED018DA5A3444293" xlink:type="arc" />
    <link:label id="lab_us-gaap_EarningsPerShareBasic_C75D1635AF8F1BEAE4D98DA5A34431EE_verboseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareBasic_C75D1635AF8F1BEAE4D98DA5A34431EE" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Basic (in dollars per share)</link:label>
    <link:label id="lab_us-gaap_EarningsPerShareBasic_C75D1635AF8F1BEAE4D98DA5A34431EE_label_en-US" xlink:label="lab_us-gaap_EarningsPerShareBasic_C75D1635AF8F1BEAE4D98DA5A34431EE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Earnings Per Share, Basic</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerShareBasic" xlink:label="loc_us-gaap_EarningsPerShareBasic_C75D1635AF8F1BEAE4D98DA5A34431EE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EarningsPerShareBasic_C75D1635AF8F1BEAE4D98DA5A34431EE" xlink:to="lab_us-gaap_EarningsPerShareBasic_C75D1635AF8F1BEAE4D98DA5A34431EE" xlink:type="arc" />
    <link:label id="lab_us-gaap_EarningsPerShareDiluted_CFC28C8511E9F08F385F8DA5A345A63F_verboseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareDiluted_CFC28C8511E9F08F385F8DA5A345A63F" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Diluted (in dollars per share)</link:label>
    <link:label id="lab_us-gaap_EarningsPerShareDiluted_CFC28C8511E9F08F385F8DA5A345A63F_label_en-US" xlink:label="lab_us-gaap_EarningsPerShareDiluted_CFC28C8511E9F08F385F8DA5A345A63F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Earnings Per Share, Diluted</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerShareDiluted" xlink:label="loc_us-gaap_EarningsPerShareDiluted_CFC28C8511E9F08F385F8DA5A345A63F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EarningsPerShareDiluted_CFC28C8511E9F08F385F8DA5A345A63F" xlink:to="lab_us-gaap_EarningsPerShareDiluted_CFC28C8511E9F08F385F8DA5A345A63F" xlink:type="arc" />
    <link:label id="lab_wab_BasicWeightedAverageCommonSharesOutstandingAndNonVestedRestrictedStockExpectedToVest_E7A81EF35BB8504476028DA5A345C8EE_terseLabel_en-US" xlink:label="lab_wab_BasicWeightedAverageCommonSharesOutstandingAndNonVestedRestrictedStockExpectedToVest_E7A81EF35BB8504476028DA5A345C8EE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Basic weighted-average common shares outstanding and non-vested restricted stock expected to vest (in shares)</link:label>
    <link:label id="lab_wab_BasicWeightedAverageCommonSharesOutstandingAndNonVestedRestrictedStockExpectedToVest_E7A81EF35BB8504476028DA5A345C8EE_label_en-US" xlink:label="lab_wab_BasicWeightedAverageCommonSharesOutstandingAndNonVestedRestrictedStockExpectedToVest_E7A81EF35BB8504476028DA5A345C8EE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Basic Weighted Average Common Shares Outstanding And Non Vested Restricted Stock Expected To Vest</link:label>
    <link:label id="lab_wab_BasicWeightedAverageCommonSharesOutstandingAndNonVestedRestrictedStockExpectedToVest_E7A81EF35BB8504476028DA5A345C8EE_documentation_en-US" xlink:label="lab_wab_BasicWeightedAverageCommonSharesOutstandingAndNonVestedRestrictedStockExpectedToVest_E7A81EF35BB8504476028DA5A345C8EE" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Basic weighted average common shares outstanding and non vested restricted stock expected to vest.</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_BasicWeightedAverageCommonSharesOutstandingAndNonVestedRestrictedStockExpectedToVest" xlink:label="loc_wab_BasicWeightedAverageCommonSharesOutstandingAndNonVestedRestrictedStockExpectedToVest_E7A81EF35BB8504476028DA5A345C8EE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_BasicWeightedAverageCommonSharesOutstandingAndNonVestedRestrictedStockExpectedToVest_E7A81EF35BB8504476028DA5A345C8EE" xlink:to="lab_wab_BasicWeightedAverageCommonSharesOutstandingAndNonVestedRestrictedStockExpectedToVest_E7A81EF35BB8504476028DA5A345C8EE" xlink:type="arc" />
    <link:label id="lab_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_3BBC64F061DD962A01C7C5674A24401F_label_en-US" xlink:label="lab_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_3BBC64F061DD962A01C7C5674A24401F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of Compensation Related Costs, Share-based Payments [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract" xlink:label="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_3BBC64F061DD962A01C7C5674A24401F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_3BBC64F061DD962A01C7C5674A24401F" xlink:to="lab_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_3BBC64F061DD962A01C7C5674A24401F" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock_DFAE73A7399F6154EF52C5674A24D6B8_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock_DFAE73A7399F6154EF52C5674A24D6B8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Stock Option Activity</link:label>
    <link:label id="lab_us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock_DFAE73A7399F6154EF52C5674A24D6B8_label_en-US" xlink:label="lab_us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock_DFAE73A7399F6154EF52C5674A24D6B8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation, Stock Options, Activity [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock_DFAE73A7399F6154EF52C5674A24D6B8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock_DFAE73A7399F6154EF52C5674A24D6B8" xlink:to="lab_us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock_DFAE73A7399F6154EF52C5674A24D6B8" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock_D8E8393F7EFCB8DC6850C5674A247E23_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock_D8E8393F7EFCB8DC6850C5674A247E23" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Share-Based Fair Value of Each Option Grant Weighted-Average Assumptions</link:label>
    <link:label id="lab_us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock_D8E8393F7EFCB8DC6850C5674A247E23_label_en-US" xlink:label="lab_us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock_D8E8393F7EFCB8DC6850C5674A247E23" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock_D8E8393F7EFCB8DC6850C5674A247E23" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock_D8E8393F7EFCB8DC6850C5674A247E23" xlink:to="lab_us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock_D8E8393F7EFCB8DC6850C5674A247E23" xlink:type="arc" />
    <link:label id="lab_wab_ScheduleofIncentiveStockAwardsActivityandRestrictedStockActivityTableTextBlock_07059D22AC460F42DDE1C5674A24A241_terseLabel_en-US" xlink:label="lab_wab_ScheduleofIncentiveStockAwardsActivityandRestrictedStockActivityTableTextBlock_07059D22AC460F42DDE1C5674A24A241" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Restricted Stock Activity and Incentive Stock Awards Activity</link:label>
    <link:label id="lab_wab_ScheduleofIncentiveStockAwardsActivityandRestrictedStockActivityTableTextBlock_07059D22AC460F42DDE1C5674A24A241_label_en-US" xlink:label="lab_wab_ScheduleofIncentiveStockAwardsActivityandRestrictedStockActivityTableTextBlock_07059D22AC460F42DDE1C5674A24A241" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Incentive Stock Awards Activity and Restricted Stock Activity [Table Text Block]</link:label>
    <link:label id="lab_wab_ScheduleofIncentiveStockAwardsActivityandRestrictedStockActivityTableTextBlock_07059D22AC460F42DDE1C5674A24A241_documentation_en-US" xlink:label="lab_wab_ScheduleofIncentiveStockAwardsActivityandRestrictedStockActivityTableTextBlock_07059D22AC460F42DDE1C5674A24A241" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Schedule of Incentive Stock Awards Activity and Restricted Stock Activity [Table Text Block]</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_ScheduleofIncentiveStockAwardsActivityandRestrictedStockActivityTableTextBlock" xlink:label="loc_wab_ScheduleofIncentiveStockAwardsActivityandRestrictedStockActivityTableTextBlock_07059D22AC460F42DDE1C5674A24A241" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_ScheduleofIncentiveStockAwardsActivityandRestrictedStockActivityTableTextBlock_07059D22AC460F42DDE1C5674A24A241" xlink:to="lab_wab_ScheduleofIncentiveStockAwardsActivityandRestrictedStockActivityTableTextBlock_07059D22AC460F42DDE1C5674A24A241" xlink:type="arc" />
    <link:label id="lab_us-gaap_StatementOfFinancialPositionAbstract_D9498F265A30F57385BA94AD939B4F28_label_en-US" xlink:label="lab_us-gaap_StatementOfFinancialPositionAbstract_D9498F265A30F57385BA94AD939B4F28" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement of Financial Position [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementOfFinancialPositionAbstract" xlink:label="loc_us-gaap_StatementOfFinancialPositionAbstract_D9498F265A30F57385BA94AD939B4F28" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementOfFinancialPositionAbstract_D9498F265A30F57385BA94AD939B4F28" xlink:to="lab_us-gaap_StatementOfFinancialPositionAbstract_D9498F265A30F57385BA94AD939B4F28" xlink:type="arc" />
    <link:label id="lab_us-gaap_AssetsAbstract_BFF13F0BCFB61E4BE6FB94AD939B9E90_terseLabel_en-US" xlink:label="lab_us-gaap_AssetsAbstract_BFF13F0BCFB61E4BE6FB94AD939B9E90" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Assets</link:label>
    <link:label id="lab_us-gaap_AssetsAbstract_BFF13F0BCFB61E4BE6FB94AD939B9E90_label_en-US" xlink:label="lab_us-gaap_AssetsAbstract_BFF13F0BCFB61E4BE6FB94AD939B9E90" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Assets [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AssetsAbstract" xlink:label="loc_us-gaap_AssetsAbstract_BFF13F0BCFB61E4BE6FB94AD939B9E90" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AssetsAbstract_BFF13F0BCFB61E4BE6FB94AD939B9E90" xlink:to="lab_us-gaap_AssetsAbstract_BFF13F0BCFB61E4BE6FB94AD939B9E90" xlink:type="arc" />
    <link:label id="lab_us-gaap_AssetsCurrentAbstract_A074DDB636FE6D4E8EA394AD939CEEA4_terseLabel_en-US" xlink:label="lab_us-gaap_AssetsCurrentAbstract_A074DDB636FE6D4E8EA394AD939CEEA4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Current Assets</link:label>
    <link:label id="lab_us-gaap_AssetsCurrentAbstract_A074DDB636FE6D4E8EA394AD939CEEA4_label_en-US" xlink:label="lab_us-gaap_AssetsCurrentAbstract_A074DDB636FE6D4E8EA394AD939CEEA4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Assets, Current [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AssetsCurrentAbstract" xlink:label="loc_us-gaap_AssetsCurrentAbstract_A074DDB636FE6D4E8EA394AD939CEEA4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AssetsCurrentAbstract_A074DDB636FE6D4E8EA394AD939CEEA4" xlink:to="lab_us-gaap_AssetsCurrentAbstract_A074DDB636FE6D4E8EA394AD939CEEA4" xlink:type="arc" />
    <link:label id="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_85ED7277F495FDF2B38394AD939CEAD9_terseLabel_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_85ED7277F495FDF2B38394AD939CEAD9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash and cash equivalents</link:label>
    <link:label id="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_85ED7277F495FDF2B38394AD939CEAD9_label_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_85ED7277F495FDF2B38394AD939CEAD9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash and Cash Equivalents, at Carrying Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_85ED7277F495FDF2B38394AD939CEAD9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_85ED7277F495FDF2B38394AD939CEAD9" xlink:to="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_85ED7277F495FDF2B38394AD939CEAD9" xlink:type="arc" />
    <link:label id="lab_us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_4C4EA52F1EE933E4F95694AD939CD533_terseLabel_en-US" xlink:label="lab_us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_4C4EA52F1EE933E4F95694AD939CD533" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Restricted cash</link:label>
    <link:label id="lab_us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_4C4EA52F1EE933E4F95694AD939CD533_label_en-US" xlink:label="lab_us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_4C4EA52F1EE933E4F95694AD939CD533" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restricted Cash and Cash Equivalents, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_4C4EA52F1EE933E4F95694AD939CD533" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_4C4EA52F1EE933E4F95694AD939CD533" xlink:to="lab_us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_4C4EA52F1EE933E4F95694AD939CD533" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccountsReceivableNetCurrent_6BB8A94D2B331FFBCE8294AD939CA191_terseLabel_en-US" xlink:label="lab_us-gaap_AccountsReceivableNetCurrent_6BB8A94D2B331FFBCE8294AD939CA191" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accounts receivable</link:label>
    <link:label id="lab_us-gaap_AccountsReceivableNetCurrent_6BB8A94D2B331FFBCE8294AD939CA191_label_en-US" xlink:label="lab_us-gaap_AccountsReceivableNetCurrent_6BB8A94D2B331FFBCE8294AD939CA191" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accounts Receivable, Net, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountsReceivableNetCurrent" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_6BB8A94D2B331FFBCE8294AD939CA191" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountsReceivableNetCurrent_6BB8A94D2B331FFBCE8294AD939CA191" xlink:to="lab_us-gaap_AccountsReceivableNetCurrent_6BB8A94D2B331FFBCE8294AD939CA191" xlink:type="arc" />
    <link:label id="lab_us-gaap_ContractWithCustomerAssetNetCurrent_D137FDC8C42C8186EDF594AD939C0369_terseLabel_en-US" xlink:label="lab_us-gaap_ContractWithCustomerAssetNetCurrent_D137FDC8C42C8186EDF594AD939C0369" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unbilled accounts receivable</link:label>
    <link:label id="lab_us-gaap_ContractWithCustomerAssetNetCurrent_D137FDC8C42C8186EDF594AD939C0369_label_en-US" xlink:label="lab_us-gaap_ContractWithCustomerAssetNetCurrent_D137FDC8C42C8186EDF594AD939C0369" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Contract with Customer, Asset, Net, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ContractWithCustomerAssetNetCurrent" xlink:label="loc_us-gaap_ContractWithCustomerAssetNetCurrent_D137FDC8C42C8186EDF594AD939C0369" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ContractWithCustomerAssetNetCurrent_D137FDC8C42C8186EDF594AD939C0369" xlink:to="lab_us-gaap_ContractWithCustomerAssetNetCurrent_D137FDC8C42C8186EDF594AD939C0369" xlink:type="arc" />
    <link:label id="lab_us-gaap_InventoryNet_EFEE86F1CA50CB4E378494AD939C2E9A_terseLabel_en-US" xlink:label="lab_us-gaap_InventoryNet_EFEE86F1CA50CB4E378494AD939C2E9A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Inventories</link:label>
    <link:label id="lab_us-gaap_InventoryNet_EFEE86F1CA50CB4E378494AD939C2E9A_label_en-US" xlink:label="lab_us-gaap_InventoryNet_EFEE86F1CA50CB4E378494AD939C2E9A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Inventory, Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InventoryNet" xlink:label="loc_us-gaap_InventoryNet_EFEE86F1CA50CB4E378494AD939C2E9A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InventoryNet_EFEE86F1CA50CB4E378494AD939C2E9A" xlink:to="lab_us-gaap_InventoryNet_EFEE86F1CA50CB4E378494AD939C2E9A" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherAssetsCurrent_C14B911D0F46048D6CA994AD939DC2A0_terseLabel_en-US" xlink:label="lab_us-gaap_OtherAssetsCurrent_C14B911D0F46048D6CA994AD939DC2A0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other current assets</link:label>
    <link:label id="lab_us-gaap_OtherAssetsCurrent_C14B911D0F46048D6CA994AD939DC2A0_label_en-US" xlink:label="lab_us-gaap_OtherAssetsCurrent_C14B911D0F46048D6CA994AD939DC2A0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Assets, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherAssetsCurrent" xlink:label="loc_us-gaap_OtherAssetsCurrent_C14B911D0F46048D6CA994AD939DC2A0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherAssetsCurrent_C14B911D0F46048D6CA994AD939DC2A0" xlink:to="lab_us-gaap_OtherAssetsCurrent_C14B911D0F46048D6CA994AD939DC2A0" xlink:type="arc" />
    <link:label id="lab_us-gaap_AssetsCurrent_EB9850BC9FE806AAF5DC94AD939DB814_totalLabel_en-US" xlink:label="lab_us-gaap_AssetsCurrent_EB9850BC9FE806AAF5DC94AD939DB814" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total current assets</link:label>
    <link:label id="lab_us-gaap_AssetsCurrent_EB9850BC9FE806AAF5DC94AD939DB814_label_en-US" xlink:label="lab_us-gaap_AssetsCurrent_EB9850BC9FE806AAF5DC94AD939DB814" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Assets, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AssetsCurrent" xlink:label="loc_us-gaap_AssetsCurrent_EB9850BC9FE806AAF5DC94AD939DB814" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AssetsCurrent_EB9850BC9FE806AAF5DC94AD939DB814" xlink:to="lab_us-gaap_AssetsCurrent_EB9850BC9FE806AAF5DC94AD939DB814" xlink:type="arc" />
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentGross_925D9ECA2A60B9F318F494AD939D6138_terseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentGross_925D9ECA2A60B9F318F494AD939D6138" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Property, plant and equipment</link:label>
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentGross_925D9ECA2A60B9F318F494AD939D6138_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentGross_925D9ECA2A60B9F318F494AD939D6138" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property, Plant and Equipment, Gross</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentGross" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_925D9ECA2A60B9F318F494AD939D6138" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentGross_925D9ECA2A60B9F318F494AD939D6138" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentGross_925D9ECA2A60B9F318F494AD939D6138" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_1C5ACC722832A8FEFD0794AD939D9C67_negatedLabel_en-US" xlink:label="lab_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_1C5ACC722832A8FEFD0794AD939D9C67" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Accumulated depreciation</link:label>
    <link:label id="lab_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_1C5ACC722832A8FEFD0794AD939D9C67_label_en-US" xlink:label="lab_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_1C5ACC722832A8FEFD0794AD939D9C67" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_1C5ACC722832A8FEFD0794AD939D9C67" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_1C5ACC722832A8FEFD0794AD939D9C67" xlink:to="lab_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_1C5ACC722832A8FEFD0794AD939D9C67" xlink:type="arc" />
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentNet_F0DA39D0B351830AA09894AD939DC83D_totalLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentNet_F0DA39D0B351830AA09894AD939DC83D" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Property, plant and equipment, net</link:label>
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentNet_F0DA39D0B351830AA09894AD939DC83D_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentNet_F0DA39D0B351830AA09894AD939DC83D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property, Plant and Equipment, Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_F0DA39D0B351830AA09894AD939DC83D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet_F0DA39D0B351830AA09894AD939DC83D" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentNet_F0DA39D0B351830AA09894AD939DC83D" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherAssetsNoncurrentAbstract_BE7F7302D55A4B51166094AD939E2CE7_terseLabel_en-US" xlink:label="lab_us-gaap_OtherAssetsNoncurrentAbstract_BE7F7302D55A4B51166094AD939E2CE7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other Assets</link:label>
    <link:label id="lab_us-gaap_OtherAssetsNoncurrentAbstract_BE7F7302D55A4B51166094AD939E2CE7_label_en-US" xlink:label="lab_us-gaap_OtherAssetsNoncurrentAbstract_BE7F7302D55A4B51166094AD939E2CE7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Assets, Noncurrent [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherAssetsNoncurrentAbstract" xlink:label="loc_us-gaap_OtherAssetsNoncurrentAbstract_BE7F7302D55A4B51166094AD939E2CE7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherAssetsNoncurrentAbstract_BE7F7302D55A4B51166094AD939E2CE7" xlink:to="lab_us-gaap_OtherAssetsNoncurrentAbstract_BE7F7302D55A4B51166094AD939E2CE7" xlink:type="arc" />
    <link:label id="lab_us-gaap_Goodwill_1283250674ABF5842A2C94AD939E58DF_terseLabel_en-US" xlink:label="lab_us-gaap_Goodwill_1283250674ABF5842A2C94AD939E58DF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Goodwill</link:label>
    <link:label id="lab_us-gaap_Goodwill_1283250674ABF5842A2C94AD939E58DF_label_en-US" xlink:label="lab_us-gaap_Goodwill_1283250674ABF5842A2C94AD939E58DF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaap_Goodwill_1283250674ABF5842A2C94AD939E58DF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Goodwill_1283250674ABF5842A2C94AD939E58DF" xlink:to="lab_us-gaap_Goodwill_1283250674ABF5842A2C94AD939E58DF" xlink:type="arc" />
    <link:label id="lab_us-gaap_IntangibleAssetsNetExcludingGoodwill_E7D92F54D8FA75B6C41694AD939E726B_terseLabel_en-US" xlink:label="lab_us-gaap_IntangibleAssetsNetExcludingGoodwill_E7D92F54D8FA75B6C41694AD939E726B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other intangibles, net</link:label>
    <link:label id="lab_us-gaap_IntangibleAssetsNetExcludingGoodwill_E7D92F54D8FA75B6C41694AD939E726B_label_en-US" xlink:label="lab_us-gaap_IntangibleAssetsNetExcludingGoodwill_E7D92F54D8FA75B6C41694AD939E726B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Intangible Assets, Net (Excluding Goodwill)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_E7D92F54D8FA75B6C41694AD939E726B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_E7D92F54D8FA75B6C41694AD939E726B" xlink:to="lab_us-gaap_IntangibleAssetsNetExcludingGoodwill_E7D92F54D8FA75B6C41694AD939E726B" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherAssetsNoncurrent_B1526631940ADB3364ED94AD939E1EC2_terseLabel_en-US" xlink:label="lab_us-gaap_OtherAssetsNoncurrent_B1526631940ADB3364ED94AD939E1EC2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other noncurrent assets</link:label>
    <link:label id="lab_us-gaap_OtherAssetsNoncurrent_B1526631940ADB3364ED94AD939E1EC2_label_en-US" xlink:label="lab_us-gaap_OtherAssetsNoncurrent_B1526631940ADB3364ED94AD939E1EC2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Assets, Noncurrent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherAssetsNoncurrent" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_B1526631940ADB3364ED94AD939E1EC2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherAssetsNoncurrent_B1526631940ADB3364ED94AD939E1EC2" xlink:to="lab_us-gaap_OtherAssetsNoncurrent_B1526631940ADB3364ED94AD939E1EC2" xlink:type="arc" />
    <link:label id="lab_wab_OtherAssetsNonCurrentIncludingGoodwillAndIntangibleAssetsNet_A38E6D1E779BD9FD2A1F94AD939EBD87_totalLabel_en-US" xlink:label="lab_wab_OtherAssetsNonCurrentIncludingGoodwillAndIntangibleAssetsNet_A38E6D1E779BD9FD2A1F94AD939EBD87" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total other assets</link:label>
    <link:label id="lab_wab_OtherAssetsNonCurrentIncludingGoodwillAndIntangibleAssetsNet_A38E6D1E779BD9FD2A1F94AD939EBD87_label_en-US" xlink:label="lab_wab_OtherAssetsNonCurrentIncludingGoodwillAndIntangibleAssetsNet_A38E6D1E779BD9FD2A1F94AD939EBD87" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Assets Non Current Including Goodwill And Intangible Assets Net</link:label>
    <link:label id="lab_wab_OtherAssetsNonCurrentIncludingGoodwillAndIntangibleAssetsNet_A38E6D1E779BD9FD2A1F94AD939EBD87_documentation_en-US" xlink:label="lab_wab_OtherAssetsNonCurrentIncludingGoodwillAndIntangibleAssetsNet_A38E6D1E779BD9FD2A1F94AD939EBD87" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other Non-Current Assets that includes Goodwill, Other Intangibles net, and Other noncurrent assets.</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_OtherAssetsNonCurrentIncludingGoodwillAndIntangibleAssetsNet" xlink:label="loc_wab_OtherAssetsNonCurrentIncludingGoodwillAndIntangibleAssetsNet_A38E6D1E779BD9FD2A1F94AD939EBD87" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_OtherAssetsNonCurrentIncludingGoodwillAndIntangibleAssetsNet_A38E6D1E779BD9FD2A1F94AD939EBD87" xlink:to="lab_wab_OtherAssetsNonCurrentIncludingGoodwillAndIntangibleAssetsNet_A38E6D1E779BD9FD2A1F94AD939EBD87" xlink:type="arc" />
    <link:label id="lab_us-gaap_Assets_80960BE1140EE734BFEA94AD939E04EB_totalLabel_en-US" xlink:label="lab_us-gaap_Assets_80960BE1140EE734BFEA94AD939E04EB" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total Assets</link:label>
    <link:label id="lab_us-gaap_Assets_80960BE1140EE734BFEA94AD939E04EB_label_en-US" xlink:label="lab_us-gaap_Assets_80960BE1140EE734BFEA94AD939E04EB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Assets</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Assets" xlink:label="loc_us-gaap_Assets_80960BE1140EE734BFEA94AD939E04EB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Assets_80960BE1140EE734BFEA94AD939E04EB" xlink:to="lab_us-gaap_Assets_80960BE1140EE734BFEA94AD939E04EB" xlink:type="arc" />
    <link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_2ADC84019AB81781E95A94AD939FCC34_terseLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_2ADC84019AB81781E95A94AD939FCC34" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Liabilities and Shareholders&#8217; Equity</link:label>
    <link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_2ADC84019AB81781E95A94AD939FCC34_label_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_2ADC84019AB81781E95A94AD939FCC34" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liabilities and Equity [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_2ADC84019AB81781E95A94AD939FCC34" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_2ADC84019AB81781E95A94AD939FCC34" xlink:to="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_2ADC84019AB81781E95A94AD939FCC34" xlink:type="arc" />
    <link:label id="lab_us-gaap_LiabilitiesCurrentAbstract_EFAB3BF03793C39719D894AD939F0E24_terseLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesCurrentAbstract_EFAB3BF03793C39719D894AD939F0E24" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Current Liabilities</link:label>
    <link:label id="lab_us-gaap_LiabilitiesCurrentAbstract_EFAB3BF03793C39719D894AD939F0E24_label_en-US" xlink:label="lab_us-gaap_LiabilitiesCurrentAbstract_EFAB3BF03793C39719D894AD939F0E24" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liabilities, Current [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LiabilitiesCurrentAbstract" xlink:label="loc_us-gaap_LiabilitiesCurrentAbstract_EFAB3BF03793C39719D894AD939F0E24" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_EFAB3BF03793C39719D894AD939F0E24" xlink:to="lab_us-gaap_LiabilitiesCurrentAbstract_EFAB3BF03793C39719D894AD939F0E24" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccountsPayableCurrent_432DEB3C11B7EC26708E94AD939F88D9_terseLabel_en-US" xlink:label="lab_us-gaap_AccountsPayableCurrent_432DEB3C11B7EC26708E94AD939F88D9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accounts payable</link:label>
    <link:label id="lab_us-gaap_AccountsPayableCurrent_432DEB3C11B7EC26708E94AD939F88D9_label_en-US" xlink:label="lab_us-gaap_AccountsPayableCurrent_432DEB3C11B7EC26708E94AD939F88D9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accounts Payable, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountsPayableCurrent" xlink:label="loc_us-gaap_AccountsPayableCurrent_432DEB3C11B7EC26708E94AD939F88D9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountsPayableCurrent_432DEB3C11B7EC26708E94AD939F88D9" xlink:to="lab_us-gaap_AccountsPayableCurrent_432DEB3C11B7EC26708E94AD939F88D9" xlink:type="arc" />
    <link:label id="lab_us-gaap_ContractWithCustomerLiabilityCurrent_4A3B913DFC03DD0D691E94AD939F3501_terseLabel_en-US" xlink:label="lab_us-gaap_ContractWithCustomerLiabilityCurrent_4A3B913DFC03DD0D691E94AD939F3501" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Customer deposits</link:label>
    <link:label id="lab_us-gaap_ContractWithCustomerLiabilityCurrent_4A3B913DFC03DD0D691E94AD939F3501_label_en-US" xlink:label="lab_us-gaap_ContractWithCustomerLiabilityCurrent_4A3B913DFC03DD0D691E94AD939F3501" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Contract with Customer, Liability, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ContractWithCustomerLiabilityCurrent" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityCurrent_4A3B913DFC03DD0D691E94AD939F3501" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ContractWithCustomerLiabilityCurrent_4A3B913DFC03DD0D691E94AD939F3501" xlink:to="lab_us-gaap_ContractWithCustomerLiabilityCurrent_4A3B913DFC03DD0D691E94AD939F3501" xlink:type="arc" />
    <link:label id="lab_us-gaap_EmployeeRelatedLiabilitiesCurrent_DDFCEA5E434B5C1AFBA794AD93A00670_terseLabel_en-US" xlink:label="lab_us-gaap_EmployeeRelatedLiabilitiesCurrent_DDFCEA5E434B5C1AFBA794AD93A00670" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accrued compensation</link:label>
    <link:label id="lab_us-gaap_EmployeeRelatedLiabilitiesCurrent_DDFCEA5E434B5C1AFBA794AD93A00670_label_en-US" xlink:label="lab_us-gaap_EmployeeRelatedLiabilitiesCurrent_DDFCEA5E434B5C1AFBA794AD93A00670" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Employee-related Liabilities, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent" xlink:label="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_DDFCEA5E434B5C1AFBA794AD93A00670" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_DDFCEA5E434B5C1AFBA794AD93A00670" xlink:to="lab_us-gaap_EmployeeRelatedLiabilitiesCurrent_DDFCEA5E434B5C1AFBA794AD93A00670" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProductWarrantyAccrualClassifiedCurrent_2517914B2C5F27DB638D94AD93A0EE33_terseLabel_en-US" xlink:label="lab_us-gaap_ProductWarrantyAccrualClassifiedCurrent_2517914B2C5F27DB638D94AD93A0EE33" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accrued warranty</link:label>
    <link:label id="lab_us-gaap_ProductWarrantyAccrualClassifiedCurrent_2517914B2C5F27DB638D94AD93A0EE33_label_en-US" xlink:label="lab_us-gaap_ProductWarrantyAccrualClassifiedCurrent_2517914B2C5F27DB638D94AD93A0EE33" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Product Warranty Accrual, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProductWarrantyAccrualClassifiedCurrent" xlink:label="loc_us-gaap_ProductWarrantyAccrualClassifiedCurrent_2517914B2C5F27DB638D94AD93A0EE33" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProductWarrantyAccrualClassifiedCurrent_2517914B2C5F27DB638D94AD93A0EE33" xlink:to="lab_us-gaap_ProductWarrantyAccrualClassifiedCurrent_2517914B2C5F27DB638D94AD93A0EE33" xlink:type="arc" />
    <link:label id="lab_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_FF4EB65EFD2564E88C4F94AD93A00C7E_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_FF4EB65EFD2564E88C4F94AD93A00C7E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Current portion of long-term debt</link:label>
    <link:label id="lab_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_FF4EB65EFD2564E88C4F94AD93A00C7E_label_en-US" xlink:label="lab_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_FF4EB65EFD2564E88C4F94AD93A00C7E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Debt and Capital Lease Obligations, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_FF4EB65EFD2564E88C4F94AD93A00C7E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_FF4EB65EFD2564E88C4F94AD93A00C7E" xlink:to="lab_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_FF4EB65EFD2564E88C4F94AD93A00C7E" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherAccruedLiabilitiesCurrent_5131C477C8A74A9CFB1494AD93A0547C_terseLabel_en-US" xlink:label="lab_us-gaap_OtherAccruedLiabilitiesCurrent_5131C477C8A74A9CFB1494AD93A0547C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other accrued liabilities</link:label>
    <link:label id="lab_us-gaap_OtherAccruedLiabilitiesCurrent_5131C477C8A74A9CFB1494AD93A0547C_label_en-US" xlink:label="lab_us-gaap_OtherAccruedLiabilitiesCurrent_5131C477C8A74A9CFB1494AD93A0547C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Accrued Liabilities, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherAccruedLiabilitiesCurrent" xlink:label="loc_us-gaap_OtherAccruedLiabilitiesCurrent_5131C477C8A74A9CFB1494AD93A0547C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherAccruedLiabilitiesCurrent_5131C477C8A74A9CFB1494AD93A0547C" xlink:to="lab_us-gaap_OtherAccruedLiabilitiesCurrent_5131C477C8A74A9CFB1494AD93A0547C" xlink:type="arc" />
    <link:label id="lab_us-gaap_LiabilitiesCurrent_6B68279A35564288796194AD93A0C650_totalLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesCurrent_6B68279A35564288796194AD93A0C650" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total current liabilities</link:label>
    <link:label id="lab_us-gaap_LiabilitiesCurrent_6B68279A35564288796194AD93A0C650_label_en-US" xlink:label="lab_us-gaap_LiabilitiesCurrent_6B68279A35564288796194AD93A0C650" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liabilities, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:label="loc_us-gaap_LiabilitiesCurrent_6B68279A35564288796194AD93A0C650" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesCurrent_6B68279A35564288796194AD93A0C650" xlink:to="lab_us-gaap_LiabilitiesCurrent_6B68279A35564288796194AD93A0C650" xlink:type="arc" />
    <link:label id="lab_us-gaap_LongTermDebtAndCapitalLeaseObligations_828F09DA7EDC8FC8F7CE94AD93A0D114_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtAndCapitalLeaseObligations_828F09DA7EDC8FC8F7CE94AD93A0D114" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Long-term debt</link:label>
    <link:label id="lab_us-gaap_LongTermDebtAndCapitalLeaseObligations_828F09DA7EDC8FC8F7CE94AD93A0D114_label_en-US" xlink:label="lab_us-gaap_LongTermDebtAndCapitalLeaseObligations_828F09DA7EDC8FC8F7CE94AD93A0D114" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Debt and Capital Lease Obligations</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligations" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_828F09DA7EDC8FC8F7CE94AD93A0D114" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_828F09DA7EDC8FC8F7CE94AD93A0D114" xlink:to="lab_us-gaap_LongTermDebtAndCapitalLeaseObligations_828F09DA7EDC8FC8F7CE94AD93A0D114" xlink:type="arc" />
    <link:label id="lab_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_01AF63A6D5AA25477EEF94AD93A1F004_terseLabel_en-US" xlink:label="lab_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_01AF63A6D5AA25477EEF94AD93A1F004" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accrued postretirement and pension benefits</link:label>
    <link:label id="lab_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_01AF63A6D5AA25477EEF94AD93A1F004_label_en-US" xlink:label="lab_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_01AF63A6D5AA25477EEF94AD93A1F004" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liability, Defined Benefit Plan, Noncurrent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent" xlink:label="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_01AF63A6D5AA25477EEF94AD93A1F004" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_01AF63A6D5AA25477EEF94AD93A1F004" xlink:to="lab_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_01AF63A6D5AA25477EEF94AD93A1F004" xlink:type="arc" />
    <link:label id="lab_us-gaap_DeferredIncomeTaxLiabilitiesNet_9A8608D44683AAFB8ACB94AD93A1EE16_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredIncomeTaxLiabilitiesNet_9A8608D44683AAFB8ACB94AD93A1EE16" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deferred income taxes</link:label>
    <link:label id="lab_us-gaap_DeferredIncomeTaxLiabilitiesNet_9A8608D44683AAFB8ACB94AD93A1EE16_label_en-US" xlink:label="lab_us-gaap_DeferredIncomeTaxLiabilitiesNet_9A8608D44683AAFB8ACB94AD93A1EE16" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred Income Tax Liabilities, Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredIncomeTaxLiabilitiesNet" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_9A8608D44683AAFB8ACB94AD93A1EE16" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_9A8608D44683AAFB8ACB94AD93A1EE16" xlink:to="lab_us-gaap_DeferredIncomeTaxLiabilitiesNet_9A8608D44683AAFB8ACB94AD93A1EE16" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProductWarrantyAccrualNoncurrent_8C706337FB41814BD11294AD93A16065_terseLabel_en-US" xlink:label="lab_us-gaap_ProductWarrantyAccrualNoncurrent_8C706337FB41814BD11294AD93A16065" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accrued warranty</link:label>
    <link:label id="lab_us-gaap_ProductWarrantyAccrualNoncurrent_8C706337FB41814BD11294AD93A16065_label_en-US" xlink:label="lab_us-gaap_ProductWarrantyAccrualNoncurrent_8C706337FB41814BD11294AD93A16065" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Product Warranty Accrual, Noncurrent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProductWarrantyAccrualNoncurrent" xlink:label="loc_us-gaap_ProductWarrantyAccrualNoncurrent_8C706337FB41814BD11294AD93A16065" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProductWarrantyAccrualNoncurrent_8C706337FB41814BD11294AD93A16065" xlink:to="lab_us-gaap_ProductWarrantyAccrualNoncurrent_8C706337FB41814BD11294AD93A16065" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherLiabilitiesNoncurrent_B0D156BEF57B5C7DE8E094AD93A19BBA_terseLabel_en-US" xlink:label="lab_us-gaap_OtherLiabilitiesNoncurrent_B0D156BEF57B5C7DE8E094AD93A19BBA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other long-term liabilities</link:label>
    <link:label id="lab_us-gaap_OtherLiabilitiesNoncurrent_B0D156BEF57B5C7DE8E094AD93A19BBA_label_en-US" xlink:label="lab_us-gaap_OtherLiabilitiesNoncurrent_B0D156BEF57B5C7DE8E094AD93A19BBA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Liabilities, Noncurrent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherLiabilitiesNoncurrent" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_B0D156BEF57B5C7DE8E094AD93A19BBA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherLiabilitiesNoncurrent_B0D156BEF57B5C7DE8E094AD93A19BBA" xlink:to="lab_us-gaap_OtherLiabilitiesNoncurrent_B0D156BEF57B5C7DE8E094AD93A19BBA" xlink:type="arc" />
    <link:label id="lab_us-gaap_Liabilities_45E2C9083306C2AFAEAB94AD93A13F33_totalLabel_en-US" xlink:label="lab_us-gaap_Liabilities_45E2C9083306C2AFAEAB94AD93A13F33" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total Liabilities</link:label>
    <link:label id="lab_us-gaap_Liabilities_45E2C9083306C2AFAEAB94AD93A13F33_label_en-US" xlink:label="lab_us-gaap_Liabilities_45E2C9083306C2AFAEAB94AD93A13F33" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liabilities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Liabilities" xlink:label="loc_us-gaap_Liabilities_45E2C9083306C2AFAEAB94AD93A13F33" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Liabilities_45E2C9083306C2AFAEAB94AD93A13F33" xlink:to="lab_us-gaap_Liabilities_45E2C9083306C2AFAEAB94AD93A13F33" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommitmentsAndContingencies_BD6A950A4F46EF4FF95E94AD93A24D73_terseLabel_en-US" xlink:label="lab_us-gaap_CommitmentsAndContingencies_BD6A950A4F46EF4FF95E94AD93A24D73" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Commitments and contingencies (Note 16)</link:label>
    <link:label id="lab_us-gaap_CommitmentsAndContingencies_BD6A950A4F46EF4FF95E94AD93A24D73_label_en-US" xlink:label="lab_us-gaap_CommitmentsAndContingencies_BD6A950A4F46EF4FF95E94AD93A24D73" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Commitments and Contingencies</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommitmentsAndContingencies" xlink:label="loc_us-gaap_CommitmentsAndContingencies_BD6A950A4F46EF4FF95E94AD93A24D73" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommitmentsAndContingencies_BD6A950A4F46EF4FF95E94AD93A24D73" xlink:to="lab_us-gaap_CommitmentsAndContingencies_BD6A950A4F46EF4FF95E94AD93A24D73" xlink:type="arc" />
    <link:label id="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_3258C19D2D6290565F3E94AD93A20E45_terseLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_3258C19D2D6290565F3E94AD93A20E45" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Equity</link:label>
    <link:label id="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_3258C19D2D6290565F3E94AD93A20E45_label_en-US" xlink:label="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_3258C19D2D6290565F3E94AD93A20E45" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_3258C19D2D6290565F3E94AD93A20E45" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_3258C19D2D6290565F3E94AD93A20E45" xlink:to="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_3258C19D2D6290565F3E94AD93A20E45" xlink:type="arc" />
    <link:label id="lab_us-gaap_PreferredStockValue_87FA2A7CD2E4F02AA92A94AD93A2BB1E_terseLabel_en-US" xlink:label="lab_us-gaap_PreferredStockValue_87FA2A7CD2E4F02AA92A94AD93A2BB1E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Convertible preferred stock, $0.01 par value; 1,000,000 shares authorized, 10,000 and no shares issued and outstanding at March 31, 2019 and December 31, 2018, respectively</link:label>
    <link:label id="lab_us-gaap_PreferredStockValue_87FA2A7CD2E4F02AA92A94AD93A2BB1E_label_en-US" xlink:label="lab_us-gaap_PreferredStockValue_87FA2A7CD2E4F02AA92A94AD93A2BB1E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Preferred Stock, Value, Issued</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PreferredStockValue" xlink:label="loc_us-gaap_PreferredStockValue_87FA2A7CD2E4F02AA92A94AD93A2BB1E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PreferredStockValue_87FA2A7CD2E4F02AA92A94AD93A2BB1E" xlink:to="lab_us-gaap_PreferredStockValue_87FA2A7CD2E4F02AA92A94AD93A2BB1E" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommonStockValue_2C615A333D3A9698D47294AD93A38209_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockValue_2C615A333D3A9698D47294AD93A38209" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Common stock, $0.01 par value; 500,000,000 shares authorized: 198,131,716 and 132,349,534 shares issued and 162,817,600 and 96,614,966 outstanding at March 31, 2019 and December 31, 2018, respectively</link:label>
    <link:label id="lab_us-gaap_CommonStockValue_2C615A333D3A9698D47294AD93A38209_label_en-US" xlink:label="lab_us-gaap_CommonStockValue_2C615A333D3A9698D47294AD93A38209" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Common Stock, Value, Issued</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommonStockValue" xlink:label="loc_us-gaap_CommonStockValue_2C615A333D3A9698D47294AD93A38209" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockValue_2C615A333D3A9698D47294AD93A38209" xlink:to="lab_us-gaap_CommonStockValue_2C615A333D3A9698D47294AD93A38209" xlink:type="arc" />
    <link:label id="lab_us-gaap_AdditionalPaidInCapitalCommonStock_8918459B02BA29B7A25894AD93A3B6E7_terseLabel_en-US" xlink:label="lab_us-gaap_AdditionalPaidInCapitalCommonStock_8918459B02BA29B7A25894AD93A3B6E7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Additional paid-in capital</link:label>
    <link:label id="lab_us-gaap_AdditionalPaidInCapitalCommonStock_8918459B02BA29B7A25894AD93A3B6E7_label_en-US" xlink:label="lab_us-gaap_AdditionalPaidInCapitalCommonStock_8918459B02BA29B7A25894AD93A3B6E7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Additional Paid in Capital, Common Stock</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdditionalPaidInCapitalCommonStock" xlink:label="loc_us-gaap_AdditionalPaidInCapitalCommonStock_8918459B02BA29B7A25894AD93A3B6E7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AdditionalPaidInCapitalCommonStock_8918459B02BA29B7A25894AD93A3B6E7" xlink:to="lab_us-gaap_AdditionalPaidInCapitalCommonStock_8918459B02BA29B7A25894AD93A3B6E7" xlink:type="arc" />
    <link:label id="lab_us-gaap_TreasuryStockValue_78FF0281803D2C8BE56394AD93A30E33_negatedLabel_en-US" xlink:label="lab_us-gaap_TreasuryStockValue_78FF0281803D2C8BE56394AD93A30E33" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Treasury stock, at cost, 35,314,116 and 35,734,588 shares, at March 31, 2019 and December 31, 2018, respectively</link:label>
    <link:label id="lab_us-gaap_TreasuryStockValue_78FF0281803D2C8BE56394AD93A30E33_label_en-US" xlink:label="lab_us-gaap_TreasuryStockValue_78FF0281803D2C8BE56394AD93A30E33" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Treasury Stock, Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TreasuryStockValue" xlink:label="loc_us-gaap_TreasuryStockValue_78FF0281803D2C8BE56394AD93A30E33" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_TreasuryStockValue_78FF0281803D2C8BE56394AD93A30E33" xlink:to="lab_us-gaap_TreasuryStockValue_78FF0281803D2C8BE56394AD93A30E33" xlink:type="arc" />
    <link:label id="lab_us-gaap_RetainedEarningsAccumulatedDeficit_9ADCFAEFD349670DD81994AD93A31DA8_terseLabel_en-US" xlink:label="lab_us-gaap_RetainedEarningsAccumulatedDeficit_9ADCFAEFD349670DD81994AD93A31DA8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Retained earnings</link:label>
    <link:label id="lab_us-gaap_RetainedEarningsAccumulatedDeficit_9ADCFAEFD349670DD81994AD93A31DA8_label_en-US" xlink:label="lab_us-gaap_RetainedEarningsAccumulatedDeficit_9ADCFAEFD349670DD81994AD93A31DA8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Retained Earnings (Accumulated Deficit)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_9ADCFAEFD349670DD81994AD93A31DA8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RetainedEarningsAccumulatedDeficit_9ADCFAEFD349670DD81994AD93A31DA8" xlink:to="lab_us-gaap_RetainedEarningsAccumulatedDeficit_9ADCFAEFD349670DD81994AD93A31DA8" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_7A30895B2059683E146494AD93A3D829_terseLabel_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_7A30895B2059683E146494AD93A3D829" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accumulated other comprehensive income (loss)</link:label>
    <link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_7A30895B2059683E146494AD93A3D829_label_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_7A30895B2059683E146494AD93A3D829" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accumulated Other Comprehensive Income (Loss), Net of Tax</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_7A30895B2059683E146494AD93A3D829" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_7A30895B2059683E146494AD93A3D829" xlink:to="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_7A30895B2059683E146494AD93A3D829" xlink:type="arc" />
    <link:label id="lab_us-gaap_StockholdersEquity_C8C8E654E7BB29638FE094AD93A3D089_totalLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquity_C8C8E654E7BB29638FE094AD93A3D089" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total Westinghouse Air Brake Technologies Corporation shareholders' equity</link:label>
    <link:label id="lab_us-gaap_StockholdersEquity_C8C8E654E7BB29638FE094AD93A3D089_label_en-US" xlink:label="lab_us-gaap_StockholdersEquity_C8C8E654E7BB29638FE094AD93A3D089" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stockholders' Equity Attributable to Parent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="loc_us-gaap_StockholdersEquity_C8C8E654E7BB29638FE094AD93A3D089" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockholdersEquity_C8C8E654E7BB29638FE094AD93A3D089" xlink:to="lab_us-gaap_StockholdersEquity_C8C8E654E7BB29638FE094AD93A3D089" xlink:type="arc" />
    <link:label id="lab_us-gaap_MinorityInterest_FF5D4FB639A3D354600C94AD93A4A922_terseLabel_en-US" xlink:label="lab_us-gaap_MinorityInterest_FF5D4FB639A3D354600C94AD93A4A922" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Noncontrolling interest</link:label>
    <link:label id="lab_us-gaap_MinorityInterest_FF5D4FB639A3D354600C94AD93A4A922_label_en-US" xlink:label="lab_us-gaap_MinorityInterest_FF5D4FB639A3D354600C94AD93A4A922" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stockholders' Equity Attributable to Noncontrolling Interest</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_MinorityInterest" xlink:label="loc_us-gaap_MinorityInterest_FF5D4FB639A3D354600C94AD93A4A922" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_MinorityInterest_FF5D4FB639A3D354600C94AD93A4A922" xlink:to="lab_us-gaap_MinorityInterest_FF5D4FB639A3D354600C94AD93A4A922" xlink:type="arc" />
    <link:label id="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_F8A5FA5062C77C95A83494AD93A41604_totalLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_F8A5FA5062C77C95A83494AD93A41604" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total Equity</link:label>
    <link:label id="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_F8A5FA5062C77C95A83494AD93A41604_label_en-US" xlink:label="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_F8A5FA5062C77C95A83494AD93A41604" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_F8A5FA5062C77C95A83494AD93A41604" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_F8A5FA5062C77C95A83494AD93A41604" xlink:to="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_F8A5FA5062C77C95A83494AD93A41604" xlink:type="arc" />
    <link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquity_3BE6AD162252F46A615294AD93A44EDC_totalLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquity_3BE6AD162252F46A615294AD93A44EDC" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total Liabilities and Equity</link:label>
    <link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquity_3BE6AD162252F46A615294AD93A44EDC_label_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquity_3BE6AD162252F46A615294AD93A44EDC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liabilities and Equity</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_3BE6AD162252F46A615294AD93A44EDC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_3BE6AD162252F46A615294AD93A44EDC" xlink:to="lab_us-gaap_LiabilitiesAndStockholdersEquity_3BE6AD162252F46A615294AD93A44EDC" xlink:type="arc" />
    <link:label id="lab_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_50BF3DEAC4463DA23A4A7536A75039AB_label_en-US" xlink:label="lab_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_50BF3DEAC4463DA23A4A7536A75039AB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement of Comprehensive Income [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract" xlink:label="loc_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_50BF3DEAC4463DA23A4A7536A75039AB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_50BF3DEAC4463DA23A4A7536A75039AB" xlink:to="lab_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_50BF3DEAC4463DA23A4A7536A75039AB" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax_9255939E8401D12ABBAA7536A750A535_terseLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax_9255939E8401D12ABBAA7536A750A535" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Foreign currency translation (loss) gain</link:label>
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax_9255939E8401D12ABBAA7536A750A535_label_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax_9255939E8401D12ABBAA7536A750A535" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax_9255939E8401D12ABBAA7536A750A535" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax_9255939E8401D12ABBAA7536A750A535" xlink:to="lab_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax_9255939E8401D12ABBAA7536A750A535" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax_DE0BE06C91F5CE12DFD27536A7507E5A_terseLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax_DE0BE06C91F5CE12DFD27536A7507E5A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unrealized (loss) gain on derivative contracts</link:label>
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax_DE0BE06C91F5CE12DFD27536A7507E5A_label_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax_DE0BE06C91F5CE12DFD27536A7507E5A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax_DE0BE06C91F5CE12DFD27536A7507E5A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax_DE0BE06C91F5CE12DFD27536A7507E5A" xlink:to="lab_us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax_DE0BE06C91F5CE12DFD27536A7507E5A" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax_6785DDCB7ACB20846F557536A750586B_negatedLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax_6785DDCB7ACB20846F557536A750586B" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Unrealized loss on pension benefit plans and post-retirement benefit plans</link:label>
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax_6785DDCB7ACB20846F557536A750586B_label_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax_6785DDCB7ACB20846F557536A750586B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, before Tax</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax_6785DDCB7ACB20846F557536A750586B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax_6785DDCB7ACB20846F557536A750586B" xlink:to="lab_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax_6785DDCB7ACB20846F557536A750586B" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent_1E18B91D9A000E67D4127536A75052B5_totalLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent_1E18B91D9A000E67D4127536A75052B5" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Other comprehensive (loss) income before tax</link:label>
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent_1E18B91D9A000E67D4127536A75052B5_label_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent_1E18B91D9A000E67D4127536A75052B5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent_1E18B91D9A000E67D4127536A75052B5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent_1E18B91D9A000E67D4127536A75052B5" xlink:to="lab_us-gaap_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent_1E18B91D9A000E67D4127536A75052B5" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeLossTaxPortionAttributableToParent1_5A79C2A94D420681C9237536A7501F61_negatedLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossTaxPortionAttributableToParent1_5A79C2A94D420681C9237536A7501F61" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Income tax (benefit) expense related to components of other comprehensive income</link:label>
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeLossTaxPortionAttributableToParent1_5A79C2A94D420681C9237536A7501F61_label_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossTaxPortionAttributableToParent1_5A79C2A94D420681C9237536A7501F61" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossTaxPortionAttributableToParent1" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossTaxPortionAttributableToParent1_5A79C2A94D420681C9237536A7501F61" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossTaxPortionAttributableToParent1_5A79C2A94D420681C9237536A7501F61" xlink:to="lab_us-gaap_OtherComprehensiveIncomeLossTaxPortionAttributableToParent1_5A79C2A94D420681C9237536A7501F61" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_34D9916CB750E11723BC7536A750C4B2_totalLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_34D9916CB750E11723BC7536A750C4B2" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Other comprehensive (loss) income, net of tax</link:label>
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_34D9916CB750E11723BC7536A750C4B2_label_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_34D9916CB750E11723BC7536A750C4B2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_34D9916CB750E11723BC7536A750C4B2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_34D9916CB750E11723BC7536A750C4B2" xlink:to="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_34D9916CB750E11723BC7536A750C4B2" xlink:type="arc" />
    <link:label id="lab_us-gaap_ComprehensiveIncomeNetOfTax_79669D0ADAD2F4C7708A7536A75026C0_totalLabel_en-US" xlink:label="lab_us-gaap_ComprehensiveIncomeNetOfTax_79669D0ADAD2F4C7708A7536A75026C0" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Comprehensive (loss) income attributable to Wabtec shareholders</link:label>
    <link:label id="lab_us-gaap_ComprehensiveIncomeNetOfTax_79669D0ADAD2F4C7708A7536A75026C0_label_en-US" xlink:label="lab_us-gaap_ComprehensiveIncomeNetOfTax_79669D0ADAD2F4C7708A7536A75026C0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Comprehensive Income (Loss), Net of Tax, Attributable to Parent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTax" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_79669D0ADAD2F4C7708A7536A75026C0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_79669D0ADAD2F4C7708A7536A75026C0" xlink:to="lab_us-gaap_ComprehensiveIncomeNetOfTax_79669D0ADAD2F4C7708A7536A75026C0" xlink:type="arc" />
    <link:label id="lab_us-gaap_CompensationAndRetirementDisclosureAbstract_27E0F5AE22DBDF10D88DFEE60974936C_label_en-US" xlink:label="lab_us-gaap_CompensationAndRetirementDisclosureAbstract_27E0F5AE22DBDF10D88DFEE60974936C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Retirement Benefits [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:label="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_27E0F5AE22DBDF10D88DFEE60974936C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_27E0F5AE22DBDF10D88DFEE60974936C" xlink:to="lab_us-gaap_CompensationAndRetirementDisclosureAbstract_27E0F5AE22DBDF10D88DFEE60974936C" xlink:type="arc" />
    <link:label id="lab_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_466127B8BD15C7F7BFF5FEE6097459D0_terseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_466127B8BD15C7F7BFF5FEE6097459D0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Defined Benefit Plans And Other Postretirement Benefit Plans Disclosures [Table]</link:label>
    <link:label id="lab_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_466127B8BD15C7F7BFF5FEE6097459D0_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_466127B8BD15C7F7BFF5FEE6097459D0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable" xlink:label="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_466127B8BD15C7F7BFF5FEE6097459D0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_466127B8BD15C7F7BFF5FEE6097459D0" xlink:to="lab_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_466127B8BD15C7F7BFF5FEE6097459D0" xlink:type="arc" />
    <link:label id="lab_us-gaap_RetirementPlanSponsorLocationAxis_40FCCCE4CE5BD0640160FEE6097590CB_terseLabel_en-US" xlink:label="lab_us-gaap_RetirementPlanSponsorLocationAxis_40FCCCE4CE5BD0640160FEE6097590CB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Retirement Plan Sponsor Location [Axis]</link:label>
    <link:label id="lab_us-gaap_RetirementPlanSponsorLocationAxis_40FCCCE4CE5BD0640160FEE6097590CB_label_en-US" xlink:label="lab_us-gaap_RetirementPlanSponsorLocationAxis_40FCCCE4CE5BD0640160FEE6097590CB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Retirement Plan Sponsor Location [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationAxis_40FCCCE4CE5BD0640160FEE6097590CB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationAxis_40FCCCE4CE5BD0640160FEE6097590CB" xlink:to="lab_us-gaap_RetirementPlanSponsorLocationAxis_40FCCCE4CE5BD0640160FEE6097590CB" xlink:type="arc" />
    <link:label id="lab_us-gaap_RetirementPlanSponsorLocationDomain_36C1D37DC61B35AA4C70FEE60975229C_terseLabel_en-US" xlink:label="lab_us-gaap_RetirementPlanSponsorLocationDomain_36C1D37DC61B35AA4C70FEE60975229C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Retirement Plan Sponsor Location [Domain]</link:label>
    <link:label id="lab_us-gaap_RetirementPlanSponsorLocationDomain_36C1D37DC61B35AA4C70FEE60975229C_label_en-US" xlink:label="lab_us-gaap_RetirementPlanSponsorLocationDomain_36C1D37DC61B35AA4C70FEE60975229C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Retirement Plan Sponsor Location [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationDomain_36C1D37DC61B35AA4C70FEE60975229C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationDomain_36C1D37DC61B35AA4C70FEE60975229C" xlink:to="lab_us-gaap_RetirementPlanSponsorLocationDomain_36C1D37DC61B35AA4C70FEE60975229C" xlink:type="arc" />
    <link:label id="lab_us-gaap_ForeignPlanMember_96FDE145015DE90CA48AFEE60975247F_terseLabel_en-US" xlink:label="lab_us-gaap_ForeignPlanMember_96FDE145015DE90CA48AFEE60975247F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">International</link:label>
    <link:label id="lab_us-gaap_ForeignPlanMember_96FDE145015DE90CA48AFEE60975247F_label_en-US" xlink:label="lab_us-gaap_ForeignPlanMember_96FDE145015DE90CA48AFEE60975247F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Foreign Plan [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ForeignPlanMember" xlink:label="loc_us-gaap_ForeignPlanMember_96FDE145015DE90CA48AFEE60975247F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ForeignPlanMember_96FDE145015DE90CA48AFEE60975247F" xlink:to="lab_us-gaap_ForeignPlanMember_96FDE145015DE90CA48AFEE60975247F" xlink:type="arc" />
    <link:label id="lab_country_US_2B7CEC30B7940CCA5B7AFEE60975E5CA_terseLabel_en-US" xlink:label="lab_country_US_2B7CEC30B7940CCA5B7AFEE60975E5CA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">U.S.</link:label>
    <link:label id="lab_country_US_2B7CEC30B7940CCA5B7AFEE60975E5CA_label_en-US" xlink:label="lab_country_US_2B7CEC30B7940CCA5B7AFEE60975E5CA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">UNITED STATES</link:label>
    <link:loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_US" xlink:label="loc_country_US_2B7CEC30B7940CCA5B7AFEE60975E5CA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_country_US_2B7CEC30B7940CCA5B7AFEE60975E5CA" xlink:to="lab_country_US_2B7CEC30B7940CCA5B7AFEE60975E5CA" xlink:type="arc" />
    <link:label id="lab_us-gaap_RetirementPlanTypeAxis_9CA65813C3FBB6087169FEE60976D609_terseLabel_en-US" xlink:label="lab_us-gaap_RetirementPlanTypeAxis_9CA65813C3FBB6087169FEE60976D609" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Retirement Plan Type [Axis]</link:label>
    <link:label id="lab_us-gaap_RetirementPlanTypeAxis_9CA65813C3FBB6087169FEE60976D609_label_en-US" xlink:label="lab_us-gaap_RetirementPlanTypeAxis_9CA65813C3FBB6087169FEE60976D609" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Retirement Plan Type [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_9CA65813C3FBB6087169FEE60976D609" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_9CA65813C3FBB6087169FEE60976D609" xlink:to="lab_us-gaap_RetirementPlanTypeAxis_9CA65813C3FBB6087169FEE60976D609" xlink:type="arc" />
    <link:label id="lab_us-gaap_RetirementPlanTypeDomain_18BCEAA17F5431CD1093FEE60976AE97_terseLabel_en-US" xlink:label="lab_us-gaap_RetirementPlanTypeDomain_18BCEAA17F5431CD1093FEE60976AE97" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Retirement Plan Type [Domain]</link:label>
    <link:label id="lab_us-gaap_RetirementPlanTypeDomain_18BCEAA17F5431CD1093FEE60976AE97_label_en-US" xlink:label="lab_us-gaap_RetirementPlanTypeDomain_18BCEAA17F5431CD1093FEE60976AE97" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Retirement Plan Type [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_18BCEAA17F5431CD1093FEE60976AE97" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_18BCEAA17F5431CD1093FEE60976AE97" xlink:to="lab_us-gaap_RetirementPlanTypeDomain_18BCEAA17F5431CD1093FEE60976AE97" xlink:type="arc" />
    <link:label id="lab_us-gaap_PensionPlansDefinedBenefitMember_E5ACF5DDAEF6570E231BFEE6097664F5_terseLabel_en-US" xlink:label="lab_us-gaap_PensionPlansDefinedBenefitMember_E5ACF5DDAEF6570E231BFEE6097664F5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Pension Plan</link:label>
    <link:label id="lab_us-gaap_PensionPlansDefinedBenefitMember_E5ACF5DDAEF6570E231BFEE6097664F5_label_en-US" xlink:label="lab_us-gaap_PensionPlansDefinedBenefitMember_E5ACF5DDAEF6570E231BFEE6097664F5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Pension Plan [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_E5ACF5DDAEF6570E231BFEE6097664F5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PensionPlansDefinedBenefitMember_E5ACF5DDAEF6570E231BFEE6097664F5" xlink:to="lab_us-gaap_PensionPlansDefinedBenefitMember_E5ACF5DDAEF6570E231BFEE6097664F5" xlink:type="arc" />
    <link:label id="lab_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_727C7B3419C916A90B72FEE609767117_terseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_727C7B3419C916A90B72FEE609767117" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]</link:label>
    <link:label id="lab_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_727C7B3419C916A90B72FEE609767117_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_727C7B3419C916A90B72FEE609767117" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems" xlink:label="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_727C7B3419C916A90B72FEE609767117" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_727C7B3419C916A90B72FEE609767117" xlink:to="lab_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_727C7B3419C916A90B72FEE609767117" xlink:type="arc" />
    <link:label id="lab_us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsCurrentFiscalYear_EF94EC8842558D7E576CFEEAE977C578_terseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsCurrentFiscalYear_EF94EC8842558D7E576CFEEAE977C578" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Expected plan contributions, current year</link:label>
    <link:label id="lab_us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsCurrentFiscalYear_EF94EC8842558D7E576CFEEAE977C578_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsCurrentFiscalYear_EF94EC8842558D7E576CFEEAE977C578" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Defined Benefit Plan, Expected Future Employer Contributions, Current Fiscal Year</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsCurrentFiscalYear" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsCurrentFiscalYear_EF94EC8842558D7E576CFEEAE977C578" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsCurrentFiscalYear_EF94EC8842558D7E576CFEEAE977C578" xlink:to="lab_us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsCurrentFiscalYear_EF94EC8842558D7E576CFEEAE977C578" xlink:type="arc" />
    <link:label id="lab_srt_CondensedFinancialInformationOfParentCompanyOnlyDisclosureAbstract_1E0498423F25B9CE2DC4C56748BDB12D_label_en-US" xlink:label="lab_srt_CondensedFinancialInformationOfParentCompanyOnlyDisclosureAbstract_1E0498423F25B9CE2DC4C56748BDB12D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Condensed Financial Information Disclosure [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_CondensedFinancialInformationOfParentCompanyOnlyDisclosureAbstract" xlink:label="loc_srt_CondensedFinancialInformationOfParentCompanyOnlyDisclosureAbstract_1E0498423F25B9CE2DC4C56748BDB12D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_CondensedFinancialInformationOfParentCompanyOnlyDisclosureAbstract_1E0498423F25B9CE2DC4C56748BDB12D" xlink:to="lab_srt_CondensedFinancialInformationOfParentCompanyOnlyDisclosureAbstract_1E0498423F25B9CE2DC4C56748BDB12D" xlink:type="arc" />
    <link:label id="lab_srt_ScheduleOfCondensedBalanceSheetTableTextBlock_5BC2923C2F6640E9CE11C56748BD8AD2_terseLabel_en-US" xlink:label="lab_srt_ScheduleOfCondensedBalanceSheetTableTextBlock_5BC2923C2F6640E9CE11C56748BD8AD2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Condensed Balance Sheet</link:label>
    <link:label id="lab_srt_ScheduleOfCondensedBalanceSheetTableTextBlock_5BC2923C2F6640E9CE11C56748BD8AD2_label_en-US" xlink:label="lab_srt_ScheduleOfCondensedBalanceSheetTableTextBlock_5BC2923C2F6640E9CE11C56748BD8AD2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Condensed Balance Sheet [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ScheduleOfCondensedBalanceSheetTableTextBlock" xlink:label="loc_srt_ScheduleOfCondensedBalanceSheetTableTextBlock_5BC2923C2F6640E9CE11C56748BD8AD2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_ScheduleOfCondensedBalanceSheetTableTextBlock_5BC2923C2F6640E9CE11C56748BD8AD2" xlink:to="lab_srt_ScheduleOfCondensedBalanceSheetTableTextBlock_5BC2923C2F6640E9CE11C56748BD8AD2" xlink:type="arc" />
    <link:label id="lab_srt_ScheduleOfCondensedIncomeStatementTableTextBlock_B061A82D4184CCB9F213C56748BD751C_terseLabel_en-US" xlink:label="lab_srt_ScheduleOfCondensedIncomeStatementTableTextBlock_B061A82D4184CCB9F213C56748BD751C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Condensed Income Statement</link:label>
    <link:label id="lab_srt_ScheduleOfCondensedIncomeStatementTableTextBlock_B061A82D4184CCB9F213C56748BD751C_label_en-US" xlink:label="lab_srt_ScheduleOfCondensedIncomeStatementTableTextBlock_B061A82D4184CCB9F213C56748BD751C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Condensed Income Statement [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ScheduleOfCondensedIncomeStatementTableTextBlock" xlink:label="loc_srt_ScheduleOfCondensedIncomeStatementTableTextBlock_B061A82D4184CCB9F213C56748BD751C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_ScheduleOfCondensedIncomeStatementTableTextBlock_B061A82D4184CCB9F213C56748BD751C" xlink:to="lab_srt_ScheduleOfCondensedIncomeStatementTableTextBlock_B061A82D4184CCB9F213C56748BD751C" xlink:type="arc" />
    <link:label id="lab_srt_ScheduleOfCondensedCashFlowStatementTableTextBlock_5261D637D87F603D25F6C56748BD968A_terseLabel_en-US" xlink:label="lab_srt_ScheduleOfCondensedCashFlowStatementTableTextBlock_5261D637D87F603D25F6C56748BD968A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Condensed Cash Flow Statement</link:label>
    <link:label id="lab_srt_ScheduleOfCondensedCashFlowStatementTableTextBlock_5261D637D87F603D25F6C56748BD968A_label_en-US" xlink:label="lab_srt_ScheduleOfCondensedCashFlowStatementTableTextBlock_5261D637D87F603D25F6C56748BD968A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Condensed Cash Flow Statement [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ScheduleOfCondensedCashFlowStatementTableTextBlock" xlink:label="loc_srt_ScheduleOfCondensedCashFlowStatementTableTextBlock_5261D637D87F603D25F6C56748BD968A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_ScheduleOfCondensedCashFlowStatementTableTextBlock_5261D637D87F603D25F6C56748BD968A" xlink:to="lab_srt_ScheduleOfCondensedCashFlowStatementTableTextBlock_5261D637D87F603D25F6C56748BD968A" xlink:type="arc" />
    <link:label id="lab_us-gaap_LeasesAbstract_B15B5ADBAD30F65BBF20508321BB5674_label_en-US" xlink:label="lab_us-gaap_LeasesAbstract_B15B5ADBAD30F65BBF20508321BB5674" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Leases [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LeasesAbstract" xlink:label="loc_us-gaap_LeasesAbstract_B15B5ADBAD30F65BBF20508321BB5674" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LeasesAbstract_B15B5ADBAD30F65BBF20508321BB5674" xlink:to="lab_us-gaap_LeasesAbstract_B15B5ADBAD30F65BBF20508321BB5674" xlink:type="arc" />
    <link:label id="lab_us-gaap_LeaseCostTableTextBlock_DE681D706AE18E87D197508321BBC47C_terseLabel_en-US" xlink:label="lab_us-gaap_LeaseCostTableTextBlock_DE681D706AE18E87D197508321BBC47C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Lease Expense, Term and Discount Rate</link:label>
    <link:label id="lab_us-gaap_LeaseCostTableTextBlock_DE681D706AE18E87D197508321BBC47C_label_en-US" xlink:label="lab_us-gaap_LeaseCostTableTextBlock_DE681D706AE18E87D197508321BBC47C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lease, Cost [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LeaseCostTableTextBlock" xlink:label="loc_us-gaap_LeaseCostTableTextBlock_DE681D706AE18E87D197508321BBC47C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LeaseCostTableTextBlock_DE681D706AE18E87D197508321BBC47C" xlink:to="lab_us-gaap_LeaseCostTableTextBlock_DE681D706AE18E87D197508321BBC47C" xlink:type="arc" />
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityMaturityTableTextBlock_DC2057029EC2A43E79F7508321BCF9F5_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityMaturityTableTextBlock_DC2057029EC2A43E79F7508321BCF9F5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Maturity of Finance Lease Liabilities</link:label>
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityMaturityTableTextBlock_DC2057029EC2A43E79F7508321BCF9F5_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityMaturityTableTextBlock_DC2057029EC2A43E79F7508321BCF9F5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finance Lease, Liability, Maturity [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinanceLeaseLiabilityMaturityTableTextBlock" xlink:label="loc_us-gaap_FinanceLeaseLiabilityMaturityTableTextBlock_DC2057029EC2A43E79F7508321BCF9F5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLeaseLiabilityMaturityTableTextBlock_DC2057029EC2A43E79F7508321BCF9F5" xlink:to="lab_us-gaap_FinanceLeaseLiabilityMaturityTableTextBlock_DC2057029EC2A43E79F7508321BCF9F5" xlink:type="arc" />
    <link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock_7AE5CFEBC99A254ACDE8508321BC2BB8_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock_7AE5CFEBC99A254ACDE8508321BC2BB8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Maturity of Operating Lease Liabilities</link:label>
    <link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock_7AE5CFEBC99A254ACDE8508321BC2BB8_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock_7AE5CFEBC99A254ACDE8508321BC2BB8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee, Operating Lease, Liability, Maturity [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock_7AE5CFEBC99A254ACDE8508321BC2BB8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock_7AE5CFEBC99A254ACDE8508321BC2BB8" xlink:to="lab_us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock_7AE5CFEBC99A254ACDE8508321BC2BB8" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_4B8563CB86D413BD41957536A51CAD02_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_4B8563CB86D413BD41957536A51CAD02" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule Of Segment Reporting Information By Segment [Table]</link:label>
    <link:label id="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_4B8563CB86D413BD41957536A51CAD02_label_en-US" xlink:label="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_4B8563CB86D413BD41957536A51CAD02" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Segment Reporting Information, by Segment [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_4B8563CB86D413BD41957536A51CAD02" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_4B8563CB86D413BD41957536A51CAD02" xlink:to="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_4B8563CB86D413BD41957536A51CAD02" xlink:type="arc" />
    <link:label id="lab_srt_ProductOrServiceAxis_76E967189C2D1A46D4E27536A51C0BCD_terseLabel_en-US" xlink:label="lab_srt_ProductOrServiceAxis_76E967189C2D1A46D4E27536A51C0BCD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Product Or Service</link:label>
    <link:label id="lab_srt_ProductOrServiceAxis_76E967189C2D1A46D4E27536A51C0BCD_label_en-US" xlink:label="lab_srt_ProductOrServiceAxis_76E967189C2D1A46D4E27536A51C0BCD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Product and Service [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ProductOrServiceAxis" xlink:label="loc_srt_ProductOrServiceAxis_76E967189C2D1A46D4E27536A51C0BCD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_ProductOrServiceAxis_76E967189C2D1A46D4E27536A51C0BCD" xlink:to="lab_srt_ProductOrServiceAxis_76E967189C2D1A46D4E27536A51C0BCD" xlink:type="arc" />
    <link:label id="lab_srt_ProductsAndServicesDomain_C4E1B00DB539C8A815257536A51C3747_terseLabel_en-US" xlink:label="lab_srt_ProductsAndServicesDomain_C4E1B00DB539C8A815257536A51C3747" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Products And Services</link:label>
    <link:label id="lab_srt_ProductsAndServicesDomain_C4E1B00DB539C8A815257536A51C3747_label_en-US" xlink:label="lab_srt_ProductsAndServicesDomain_C4E1B00DB539C8A815257536A51C3747" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Product and Service [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ProductsAndServicesDomain" xlink:label="loc_srt_ProductsAndServicesDomain_C4E1B00DB539C8A815257536A51C3747" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_ProductsAndServicesDomain_C4E1B00DB539C8A815257536A51C3747" xlink:to="lab_srt_ProductsAndServicesDomain_C4E1B00DB539C8A815257536A51C3747" xlink:type="arc" />
    <link:label id="lab_wab_SpecialtyProductsandElectronicsMember_E7751B5C55EC5D352D4E7536A51C398D_terseLabel_en-US" xlink:label="lab_wab_SpecialtyProductsandElectronicsMember_E7751B5C55EC5D352D4E7536A51C398D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Remanufacturing, Overhaul &amp; Build</link:label>
    <link:label id="lab_wab_SpecialtyProductsandElectronicsMember_E7751B5C55EC5D352D4E7536A51C398D_label_en-US" xlink:label="lab_wab_SpecialtyProductsandElectronicsMember_E7751B5C55EC5D352D4E7536A51C398D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Specialty Products and Electronics [Member]</link:label>
    <link:label id="lab_wab_SpecialtyProductsandElectronicsMember_E7751B5C55EC5D352D4E7536A51C398D_documentation_en-US" xlink:label="lab_wab_SpecialtyProductsandElectronicsMember_E7751B5C55EC5D352D4E7536A51C398D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Specialty Products and Electronics [Member]</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_SpecialtyProductsandElectronicsMember" xlink:label="loc_wab_SpecialtyProductsandElectronicsMember_E7751B5C55EC5D352D4E7536A51C398D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_SpecialtyProductsandElectronicsMember_E7751B5C55EC5D352D4E7536A51C398D" xlink:to="lab_wab_SpecialtyProductsandElectronicsMember_E7751B5C55EC5D352D4E7536A51C398D" xlink:type="arc" />
    <link:label id="lab_wab_TransitProductsMember_D05D412903F633551C8B7536A51C1C91_terseLabel_en-US" xlink:label="lab_wab_TransitProductsMember_D05D412903F633551C8B7536A51C1C91" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Specialty Products &amp; Electronics</link:label>
    <link:label id="lab_wab_TransitProductsMember_D05D412903F633551C8B7536A51C1C91_label_en-US" xlink:label="lab_wab_TransitProductsMember_D05D412903F633551C8B7536A51C1C91" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Transit Products [Member]</link:label>
    <link:label id="lab_wab_TransitProductsMember_D05D412903F633551C8B7536A51C1C91_documentation_en-US" xlink:label="lab_wab_TransitProductsMember_D05D412903F633551C8B7536A51C1C91" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Transit products.</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_TransitProductsMember" xlink:label="loc_wab_TransitProductsMember_D05D412903F633551C8B7536A51C1C91" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_TransitProductsMember_D05D412903F633551C8B7536A51C1C91" xlink:to="lab_wab_TransitProductsMember_D05D412903F633551C8B7536A51C1C91" xlink:type="arc" />
    <link:label id="lab_wab_BrakeProductsMember_507A8AE6FF551FC1ECD17536A51C66CB_terseLabel_en-US" xlink:label="lab_wab_BrakeProductsMember_507A8AE6FF551FC1ECD17536A51C66CB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Transit Products</link:label>
    <link:label id="lab_wab_BrakeProductsMember_507A8AE6FF551FC1ECD17536A51C66CB_label_en-US" xlink:label="lab_wab_BrakeProductsMember_507A8AE6FF551FC1ECD17536A51C66CB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Brake Products [Member]</link:label>
    <link:label id="lab_wab_BrakeProductsMember_507A8AE6FF551FC1ECD17536A51C66CB_documentation_en-US" xlink:label="lab_wab_BrakeProductsMember_507A8AE6FF551FC1ECD17536A51C66CB" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Brake products.</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_BrakeProductsMember" xlink:label="loc_wab_BrakeProductsMember_507A8AE6FF551FC1ECD17536A51C66CB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_BrakeProductsMember_507A8AE6FF551FC1ECD17536A51C66CB" xlink:to="lab_wab_BrakeProductsMember_507A8AE6FF551FC1ECD17536A51C66CB" xlink:type="arc" />
    <link:label id="lab_wab_RemanufacturingOverhaulAndBuildMember_3CB78E9CAB0C80CB01B57536A51CBF85_terseLabel_en-US" xlink:label="lab_wab_RemanufacturingOverhaulAndBuildMember_3CB78E9CAB0C80CB01B57536A51CBF85" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Brake Products</link:label>
    <link:label id="lab_wab_RemanufacturingOverhaulAndBuildMember_3CB78E9CAB0C80CB01B57536A51CBF85_label_en-US" xlink:label="lab_wab_RemanufacturingOverhaulAndBuildMember_3CB78E9CAB0C80CB01B57536A51CBF85" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Remanufacturing Overhaul And Build [Member]</link:label>
    <link:label id="lab_wab_RemanufacturingOverhaulAndBuildMember_3CB78E9CAB0C80CB01B57536A51CBF85_documentation_en-US" xlink:label="lab_wab_RemanufacturingOverhaulAndBuildMember_3CB78E9CAB0C80CB01B57536A51CBF85" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Remanufacturing overhaul and build.</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_RemanufacturingOverhaulAndBuildMember" xlink:label="loc_wab_RemanufacturingOverhaulAndBuildMember_3CB78E9CAB0C80CB01B57536A51CBF85" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_RemanufacturingOverhaulAndBuildMember_3CB78E9CAB0C80CB01B57536A51CBF85" xlink:to="lab_wab_RemanufacturingOverhaulAndBuildMember_3CB78E9CAB0C80CB01B57536A51CBF85" xlink:type="arc" />
    <link:label id="lab_wab_AllOtherMember_B59795EF8110D87325B07536A52C74AF_terseLabel_en-US" xlink:label="lab_wab_AllOtherMember_B59795EF8110D87325B07536A52C74AF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other</link:label>
    <link:label id="lab_wab_AllOtherMember_B59795EF8110D87325B07536A52C74AF_label_en-US" xlink:label="lab_wab_AllOtherMember_B59795EF8110D87325B07536A52C74AF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">All Other [Member]</link:label>
    <link:label id="lab_wab_AllOtherMember_B59795EF8110D87325B07536A52C74AF_documentation_en-US" xlink:label="lab_wab_AllOtherMember_B59795EF8110D87325B07536A52C74AF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">All other.</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_AllOtherMember" xlink:label="loc_wab_AllOtherMember_B59795EF8110D87325B07536A52C74AF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_AllOtherMember_B59795EF8110D87325B07536A52C74AF" xlink:to="lab_wab_AllOtherMember_B59795EF8110D87325B07536A52C74AF" xlink:type="arc" />
    <link:label id="lab_us-gaap_SegmentReportingInformationLineItems_4BA1C883909F6F3327B47536A52C2826_terseLabel_en-US" xlink:label="lab_us-gaap_SegmentReportingInformationLineItems_4BA1C883909F6F3327B47536A52C2826" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Segment Reporting Information [Line Items]</link:label>
    <link:label id="lab_us-gaap_SegmentReportingInformationLineItems_4BA1C883909F6F3327B47536A52C2826_label_en-US" xlink:label="lab_us-gaap_SegmentReportingInformationLineItems_4BA1C883909F6F3327B47536A52C2826" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Segment Reporting Information [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_4BA1C883909F6F3327B47536A52C2826" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_4BA1C883909F6F3327B47536A52C2826" xlink:to="lab_us-gaap_SegmentReportingInformationLineItems_4BA1C883909F6F3327B47536A52C2826" xlink:type="arc" />
    <link:label id="lab_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_B4FFD5ED956AE880B50F7536A52C87A5_verboseLabel_en-US" xlink:label="lab_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_B4FFD5ED956AE880B50F7536A52C87A5" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Total sales</link:label>
    <link:label id="lab_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_B4FFD5ED956AE880B50F7536A52C87A5_label_en-US" xlink:label="lab_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_B4FFD5ED956AE880B50F7536A52C87A5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenue from Contract with Customer, Excluding Assessed Tax</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_B4FFD5ED956AE880B50F7536A52C87A5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_B4FFD5ED956AE880B50F7536A52C87A5" xlink:to="lab_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_B4FFD5ED956AE880B50F7536A52C87A5" xlink:type="arc" />
    <link:label id="lab_us-gaap_InventoryDisclosureAbstract_D8D07CE442051B2FF2C0C56747F2C62D_label_en-US" xlink:label="lab_us-gaap_InventoryDisclosureAbstract_D8D07CE442051B2FF2C0C56747F2C62D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Inventory Disclosure [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InventoryDisclosureAbstract" xlink:label="loc_us-gaap_InventoryDisclosureAbstract_D8D07CE442051B2FF2C0C56747F2C62D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InventoryDisclosureAbstract_D8D07CE442051B2FF2C0C56747F2C62D" xlink:to="lab_us-gaap_InventoryDisclosureAbstract_D8D07CE442051B2FF2C0C56747F2C62D" xlink:type="arc" />
    <link:label id="lab_us-gaap_InventoryDisclosureTextBlock_25EA004C4D57AD172F3BC56747F2CCA2_terseLabel_en-US" xlink:label="lab_us-gaap_InventoryDisclosureTextBlock_25EA004C4D57AD172F3BC56747F2CCA2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Inventories</link:label>
    <link:label id="lab_us-gaap_InventoryDisclosureTextBlock_25EA004C4D57AD172F3BC56747F2CCA2_label_en-US" xlink:label="lab_us-gaap_InventoryDisclosureTextBlock_25EA004C4D57AD172F3BC56747F2CCA2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Inventory Disclosure [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InventoryDisclosureTextBlock" xlink:label="loc_us-gaap_InventoryDisclosureTextBlock_25EA004C4D57AD172F3BC56747F2CCA2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InventoryDisclosureTextBlock_25EA004C4D57AD172F3BC56747F2CCA2" xlink:to="lab_us-gaap_InventoryDisclosureTextBlock_25EA004C4D57AD172F3BC56747F2CCA2" xlink:type="arc" />
    <link:label id="lab_srt_ConsolidationItemsAxis_6C80B3A5F14BCA01EC327536A53C4EC0_terseLabel_en-US" xlink:label="lab_srt_ConsolidationItemsAxis_6C80B3A5F14BCA01EC327536A53C4EC0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Consolidation Items [Axis]</link:label>
    <link:label id="lab_srt_ConsolidationItemsAxis_6C80B3A5F14BCA01EC327536A53C4EC0_label_en-US" xlink:label="lab_srt_ConsolidationItemsAxis_6C80B3A5F14BCA01EC327536A53C4EC0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Consolidation Items [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidationItemsAxis" xlink:label="loc_srt_ConsolidationItemsAxis_6C80B3A5F14BCA01EC327536A53C4EC0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_ConsolidationItemsAxis_6C80B3A5F14BCA01EC327536A53C4EC0" xlink:to="lab_srt_ConsolidationItemsAxis_6C80B3A5F14BCA01EC327536A53C4EC0" xlink:type="arc" />
    <link:label id="lab_srt_ConsolidationItemsDomain_7C14AAB9AB8D0166C5317536A53C4079_terseLabel_en-US" xlink:label="lab_srt_ConsolidationItemsDomain_7C14AAB9AB8D0166C5317536A53C4079" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Consolidation Items [Domain]</link:label>
    <link:label id="lab_srt_ConsolidationItemsDomain_7C14AAB9AB8D0166C5317536A53C4079_label_en-US" xlink:label="lab_srt_ConsolidationItemsDomain_7C14AAB9AB8D0166C5317536A53C4079" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Consolidation Items [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="loc_srt_ConsolidationItemsDomain_7C14AAB9AB8D0166C5317536A53C4079" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_ConsolidationItemsDomain_7C14AAB9AB8D0166C5317536A53C4079" xlink:to="lab_srt_ConsolidationItemsDomain_7C14AAB9AB8D0166C5317536A53C4079" xlink:type="arc" />
    <link:label id="lab_wab_CorporateAndEliminationsMember_F64D41A5AD0F7FDAA6057536A53C0A17_terseLabel_en-US" xlink:label="lab_wab_CorporateAndEliminationsMember_F64D41A5AD0F7FDAA6057536A53C0A17" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Corporate Activities and Elimination</link:label>
    <link:label id="lab_wab_CorporateAndEliminationsMember_F64D41A5AD0F7FDAA6057536A53C0A17_label_en-US" xlink:label="lab_wab_CorporateAndEliminationsMember_F64D41A5AD0F7FDAA6057536A53C0A17" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Corporate And Eliminations [Member]</link:label>
    <link:label id="lab_wab_CorporateAndEliminationsMember_F64D41A5AD0F7FDAA6057536A53C0A17_documentation_en-US" xlink:label="lab_wab_CorporateAndEliminationsMember_F64D41A5AD0F7FDAA6057536A53C0A17" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Corporate And Eliminations [Member]</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_CorporateAndEliminationsMember" xlink:label="loc_wab_CorporateAndEliminationsMember_F64D41A5AD0F7FDAA6057536A53C0A17" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_CorporateAndEliminationsMember_F64D41A5AD0F7FDAA6057536A53C0A17" xlink:to="lab_wab_CorporateAndEliminationsMember_F64D41A5AD0F7FDAA6057536A53C0A17" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingSegmentsMember_094A83C150DF0053756F7536A53C5F35_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingSegmentsMember_094A83C150DF0053756F7536A53C5F35" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Operating Segments</link:label>
    <link:label id="lab_us-gaap_OperatingSegmentsMember_094A83C150DF0053756F7536A53C5F35_label_en-US" xlink:label="lab_us-gaap_OperatingSegmentsMember_094A83C150DF0053756F7536A53C5F35" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Segments [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingSegmentsMember" xlink:label="loc_us-gaap_OperatingSegmentsMember_094A83C150DF0053756F7536A53C5F35" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingSegmentsMember_094A83C150DF0053756F7536A53C5F35" xlink:to="lab_us-gaap_OperatingSegmentsMember_094A83C150DF0053756F7536A53C5F35" xlink:type="arc" />
    <link:label id="lab_us-gaap_StatementBusinessSegmentsAxis_167BE21E7DCB573A2AEE7536A53CB23F_terseLabel_en-US" xlink:label="lab_us-gaap_StatementBusinessSegmentsAxis_167BE21E7DCB573A2AEE7536A53CB23F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Segments [Axis]</link:label>
    <link:label id="lab_us-gaap_StatementBusinessSegmentsAxis_167BE21E7DCB573A2AEE7536A53CB23F_label_en-US" xlink:label="lab_us-gaap_StatementBusinessSegmentsAxis_167BE21E7DCB573A2AEE7536A53CB23F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Segments [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_167BE21E7DCB573A2AEE7536A53CB23F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_167BE21E7DCB573A2AEE7536A53CB23F" xlink:to="lab_us-gaap_StatementBusinessSegmentsAxis_167BE21E7DCB573A2AEE7536A53CB23F" xlink:type="arc" />
    <link:label id="lab_us-gaap_SegmentDomain_99A9D4E793D073D1EFC57536A53C37CA_terseLabel_en-US" xlink:label="lab_us-gaap_SegmentDomain_99A9D4E793D073D1EFC57536A53C37CA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Segments [Domain]</link:label>
    <link:label id="lab_us-gaap_SegmentDomain_99A9D4E793D073D1EFC57536A53C37CA_label_en-US" xlink:label="lab_us-gaap_SegmentDomain_99A9D4E793D073D1EFC57536A53C37CA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Segments [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_99A9D4E793D073D1EFC57536A53C37CA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SegmentDomain_99A9D4E793D073D1EFC57536A53C37CA" xlink:to="lab_us-gaap_SegmentDomain_99A9D4E793D073D1EFC57536A53C37CA" xlink:type="arc" />
    <link:label id="lab_wab_FreightSegmentMember_58EE08D25EA5E41831F37536A53CC4DB_terseLabel_en-US" xlink:label="lab_wab_FreightSegmentMember_58EE08D25EA5E41831F37536A53CC4DB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Freight Segment</link:label>
    <link:label id="lab_wab_FreightSegmentMember_58EE08D25EA5E41831F37536A53CC4DB_label_en-US" xlink:label="lab_wab_FreightSegmentMember_58EE08D25EA5E41831F37536A53CC4DB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Freight Segment [Member]</link:label>
    <link:label id="lab_wab_FreightSegmentMember_58EE08D25EA5E41831F37536A53CC4DB_documentation_en-US" xlink:label="lab_wab_FreightSegmentMember_58EE08D25EA5E41831F37536A53CC4DB" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Freight Segment</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_FreightSegmentMember" xlink:label="loc_wab_FreightSegmentMember_58EE08D25EA5E41831F37536A53CC4DB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_FreightSegmentMember_58EE08D25EA5E41831F37536A53CC4DB" xlink:to="lab_wab_FreightSegmentMember_58EE08D25EA5E41831F37536A53CC4DB" xlink:type="arc" />
    <link:label id="lab_wab_TransitSegmentMember_5FF0C81933DC30623A997536A53C0C73_terseLabel_en-US" xlink:label="lab_wab_TransitSegmentMember_5FF0C81933DC30623A997536A53C0C73" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Transit Segment</link:label>
    <link:label id="lab_wab_TransitSegmentMember_5FF0C81933DC30623A997536A53C0C73_label_en-US" xlink:label="lab_wab_TransitSegmentMember_5FF0C81933DC30623A997536A53C0C73" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Transit Segment [Member]</link:label>
    <link:label id="lab_wab_TransitSegmentMember_5FF0C81933DC30623A997536A53C0C73_documentation_en-US" xlink:label="lab_wab_TransitSegmentMember_5FF0C81933DC30623A997536A53C0C73" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Transit segment.</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_TransitSegmentMember" xlink:label="loc_wab_TransitSegmentMember_5FF0C81933DC30623A997536A53C0C73" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_TransitSegmentMember_5FF0C81933DC30623A997536A53C0C73" xlink:to="lab_wab_TransitSegmentMember_5FF0C81933DC30623A997536A53C0C73" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingIncomeLoss_8C01986EFE6DEBB93E417536A53C67BB_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingIncomeLoss_8C01986EFE6DEBB93E417536A53C67BB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Income (loss) from operations</link:label>
    <link:label id="lab_us-gaap_OperatingIncomeLoss_8C01986EFE6DEBB93E417536A53C67BB_label_en-US" xlink:label="lab_us-gaap_OperatingIncomeLoss_8C01986EFE6DEBB93E417536A53C67BB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Income (Loss)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="loc_us-gaap_OperatingIncomeLoss_8C01986EFE6DEBB93E417536A53C67BB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingIncomeLoss_8C01986EFE6DEBB93E417536A53C67BB" xlink:to="lab_us-gaap_OperatingIncomeLoss_8C01986EFE6DEBB93E417536A53C67BB" xlink:type="arc" />
    <link:label id="lab_wab_InterestExpenseAndOtherNet_7511F50CD98DC651A4BB7536A53C39B2_negatedLabel_en-US" xlink:label="lab_wab_InterestExpenseAndOtherNet_7511F50CD98DC651A4BB7536A53C39B2" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Interest expense and other, net</link:label>
    <link:label id="lab_wab_InterestExpenseAndOtherNet_7511F50CD98DC651A4BB7536A53C39B2_label_en-US" xlink:label="lab_wab_InterestExpenseAndOtherNet_7511F50CD98DC651A4BB7536A53C39B2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interest Expense And Other Net</link:label>
    <link:label id="lab_wab_InterestExpenseAndOtherNet_7511F50CD98DC651A4BB7536A53C39B2_documentation_en-US" xlink:label="lab_wab_InterestExpenseAndOtherNet_7511F50CD98DC651A4BB7536A53C39B2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount of interest expense and other revenue and expenses that are associated with the entity's normal revenue producing operation.</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_InterestExpenseAndOtherNet" xlink:label="loc_wab_InterestExpenseAndOtherNet_7511F50CD98DC651A4BB7536A53C39B2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_InterestExpenseAndOtherNet_7511F50CD98DC651A4BB7536A53C39B2" xlink:to="lab_wab_InterestExpenseAndOtherNet_7511F50CD98DC651A4BB7536A53C39B2" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_97B90BDC0EE894B5F2A27536A53C2CBB_totalLabel_en-US" xlink:label="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_97B90BDC0EE894B5F2A27536A53C2CBB" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Income from operations before income taxes</link:label>
    <link:label id="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_97B90BDC0EE894B5F2A27536A53C2CBB_label_en-US" xlink:label="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_97B90BDC0EE894B5F2A27536A53C2CBB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_97B90BDC0EE894B5F2A27536A53C2CBB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_97B90BDC0EE894B5F2A27536A53C2CBB" xlink:to="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_97B90BDC0EE894B5F2A27536A53C2CBB" xlink:type="arc" />
    <link:label id="lab_us-gaap_LesseeOperatingLeasesTextBlock_E5232639DF18715776EC468B1FDAAE81_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeasesTextBlock_E5232639DF18715776EC468B1FDAAE81" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Leases</link:label>
    <link:label id="lab_us-gaap_LesseeOperatingLeasesTextBlock_E5232639DF18715776EC468B1FDAAE81_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeasesTextBlock_E5232639DF18715776EC468B1FDAAE81" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee, Operating Leases [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LesseeOperatingLeasesTextBlock" xlink:label="loc_us-gaap_LesseeOperatingLeasesTextBlock_E5232639DF18715776EC468B1FDAAE81" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeasesTextBlock_E5232639DF18715776EC468B1FDAAE81" xlink:to="lab_us-gaap_LesseeOperatingLeasesTextBlock_E5232639DF18715776EC468B1FDAAE81" xlink:type="arc" />
    <link:label id="lab_us-gaap_LesseeFinanceLeasesTextBlock_49CCE27DD2CAA8A968FC468BC4C42C07_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeFinanceLeasesTextBlock_49CCE27DD2CAA8A968FC468BC4C42C07" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Leases</link:label>
    <link:label id="lab_us-gaap_LesseeFinanceLeasesTextBlock_49CCE27DD2CAA8A968FC468BC4C42C07_label_en-US" xlink:label="lab_us-gaap_LesseeFinanceLeasesTextBlock_49CCE27DD2CAA8A968FC468BC4C42C07" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee, Finance Leases [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LesseeFinanceLeasesTextBlock" xlink:label="loc_us-gaap_LesseeFinanceLeasesTextBlock_49CCE27DD2CAA8A968FC468BC4C42C07" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeFinanceLeasesTextBlock_49CCE27DD2CAA8A968FC468BC4C42C07" xlink:to="lab_us-gaap_LesseeFinanceLeasesTextBlock_49CCE27DD2CAA8A968FC468BC4C42C07" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_56FA564CC15647161B552D1A33ED76B0_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_56FA564CC15647161B552D1A33ED76B0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table]</link:label>
    <link:label id="lab_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_56FA564CC15647161B552D1A33ED76B0_label_en-US" xlink:label="lab_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_56FA564CC15647161B552D1A33ED76B0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_56FA564CC15647161B552D1A33ED76B0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_56FA564CC15647161B552D1A33ED76B0" xlink:to="lab_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_56FA564CC15647161B552D1A33ED76B0" xlink:type="arc" />
    <link:label id="lab_us-gaap_PlanNameAxis_0C6C418E98997AC7A3A82D1A33ED4AE9_terseLabel_en-US" xlink:label="lab_us-gaap_PlanNameAxis_0C6C418E98997AC7A3A82D1A33ED4AE9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Plan Name</link:label>
    <link:label id="lab_us-gaap_PlanNameAxis_0C6C418E98997AC7A3A82D1A33ED4AE9_label_en-US" xlink:label="lab_us-gaap_PlanNameAxis_0C6C418E98997AC7A3A82D1A33ED4AE9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Plan Name [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PlanNameAxis" xlink:label="loc_us-gaap_PlanNameAxis_0C6C418E98997AC7A3A82D1A33ED4AE9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PlanNameAxis_0C6C418E98997AC7A3A82D1A33ED4AE9" xlink:to="lab_us-gaap_PlanNameAxis_0C6C418E98997AC7A3A82D1A33ED4AE9" xlink:type="arc" />
    <link:label id="lab_us-gaap_PlanNameDomain_2F3A69BAE12A8E634C412D1A33EE5CD2_terseLabel_en-US" xlink:label="lab_us-gaap_PlanNameDomain_2F3A69BAE12A8E634C412D1A33EE5CD2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Plan Name</link:label>
    <link:label id="lab_us-gaap_PlanNameDomain_2F3A69BAE12A8E634C412D1A33EE5CD2_label_en-US" xlink:label="lab_us-gaap_PlanNameDomain_2F3A69BAE12A8E634C412D1A33EE5CD2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Plan Name [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PlanNameDomain" xlink:label="loc_us-gaap_PlanNameDomain_2F3A69BAE12A8E634C412D1A33EE5CD2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PlanNameDomain_2F3A69BAE12A8E634C412D1A33EE5CD2" xlink:to="lab_us-gaap_PlanNameDomain_2F3A69BAE12A8E634C412D1A33EE5CD2" xlink:type="arc" />
    <link:label id="lab_wab_PlanTwoThousandElevenMember_9335DC0E3A85C04EEAD22D1A33EEECED_terseLabel_en-US" xlink:label="lab_wab_PlanTwoThousandElevenMember_9335DC0E3A85C04EEAD22D1A33EEECED" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2011 Plan</link:label>
    <link:label id="lab_wab_PlanTwoThousandElevenMember_9335DC0E3A85C04EEAD22D1A33EEECED_label_en-US" xlink:label="lab_wab_PlanTwoThousandElevenMember_9335DC0E3A85C04EEAD22D1A33EEECED" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Plan Two Thousand Eleven [Member]</link:label>
    <link:label id="lab_wab_PlanTwoThousandElevenMember_9335DC0E3A85C04EEAD22D1A33EEECED_documentation_en-US" xlink:label="lab_wab_PlanTwoThousandElevenMember_9335DC0E3A85C04EEAD22D1A33EEECED" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Plan two thousand eleven.</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_PlanTwoThousandElevenMember" xlink:label="loc_wab_PlanTwoThousandElevenMember_9335DC0E3A85C04EEAD22D1A33EEECED" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_PlanTwoThousandElevenMember_9335DC0E3A85C04EEAD22D1A33EEECED" xlink:to="lab_wab_PlanTwoThousandElevenMember_9335DC0E3A85C04EEAD22D1A33EEECED" xlink:type="arc" />
    <link:label id="lab_wab_PlanTwoThousandNineteenMember_70448E9F92219DD10A742D2284800E1B_terseLabel_en-US" xlink:label="lab_wab_PlanTwoThousandNineteenMember_70448E9F92219DD10A742D2284800E1B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2019 Plan</link:label>
    <link:label id="lab_wab_PlanTwoThousandNineteenMember_70448E9F92219DD10A742D2284800E1B_label_en-US" xlink:label="lab_wab_PlanTwoThousandNineteenMember_70448E9F92219DD10A742D2284800E1B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Plan Two Thousand Nineteen [Member]</link:label>
    <link:label id="lab_wab_PlanTwoThousandNineteenMember_70448E9F92219DD10A742D2284800E1B_documentation_en-US" xlink:label="lab_wab_PlanTwoThousandNineteenMember_70448E9F92219DD10A742D2284800E1B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Plan Two Thousand Nineteen [Member]</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_PlanTwoThousandNineteenMember" xlink:label="loc_wab_PlanTwoThousandNineteenMember_70448E9F92219DD10A742D2284800E1B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_PlanTwoThousandNineteenMember_70448E9F92219DD10A742D2284800E1B" xlink:to="lab_wab_PlanTwoThousandNineteenMember_70448E9F92219DD10A742D2284800E1B" xlink:type="arc" />
    <link:label id="lab_wab_NonEmployeeDirectorsFeeandStockOptionPlanMember_B23BBEDB8653B518F0582D1A33EE355F_terseLabel_en-US" xlink:label="lab_wab_NonEmployeeDirectorsFeeandStockOptionPlanMember_B23BBEDB8653B518F0582D1A33EE355F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Directors Plan</link:label>
    <link:label id="lab_wab_NonEmployeeDirectorsFeeandStockOptionPlanMember_B23BBEDB8653B518F0582D1A33EE355F_label_en-US" xlink:label="lab_wab_NonEmployeeDirectorsFeeandStockOptionPlanMember_B23BBEDB8653B518F0582D1A33EE355F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Non-Employee Directors&#8217; Fee and Stock Option Plan [Member]</link:label>
    <link:label id="lab_wab_NonEmployeeDirectorsFeeandStockOptionPlanMember_B23BBEDB8653B518F0582D1A33EE355F_documentation_en-US" xlink:label="lab_wab_NonEmployeeDirectorsFeeandStockOptionPlanMember_B23BBEDB8653B518F0582D1A33EE355F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Non-Employee Directors&#8217; Fee and Stock Option Plan [Member]</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_NonEmployeeDirectorsFeeandStockOptionPlanMember" xlink:label="loc_wab_NonEmployeeDirectorsFeeandStockOptionPlanMember_B23BBEDB8653B518F0582D1A33EE355F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_NonEmployeeDirectorsFeeandStockOptionPlanMember_B23BBEDB8653B518F0582D1A33EE355F" xlink:to="lab_wab_NonEmployeeDirectorsFeeandStockOptionPlanMember_B23BBEDB8653B518F0582D1A33EE355F" xlink:type="arc" />
    <link:label id="lab_wab_PlanTwoThousandMember_229BA15CC1DCE07B98542D1A33EFE049_terseLabel_en-US" xlink:label="lab_wab_PlanTwoThousandMember_229BA15CC1DCE07B98542D1A33EFE049" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2000 Plan</link:label>
    <link:label id="lab_wab_PlanTwoThousandMember_229BA15CC1DCE07B98542D1A33EFE049_label_en-US" xlink:label="lab_wab_PlanTwoThousandMember_229BA15CC1DCE07B98542D1A33EFE049" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Plan Two Thousand [Member]</link:label>
    <link:label id="lab_wab_PlanTwoThousandMember_229BA15CC1DCE07B98542D1A33EFE049_documentation_en-US" xlink:label="lab_wab_PlanTwoThousandMember_229BA15CC1DCE07B98542D1A33EFE049" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Plan two thousand.</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_PlanTwoThousandMember" xlink:label="loc_wab_PlanTwoThousandMember_229BA15CC1DCE07B98542D1A33EFE049" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_PlanTwoThousandMember_229BA15CC1DCE07B98542D1A33EFE049" xlink:to="lab_wab_PlanTwoThousandMember_229BA15CC1DCE07B98542D1A33EFE049" xlink:type="arc" />
    <link:label id="lab_us-gaap_AwardTypeAxis_0D80770E7BD5ADCCFD922D1A33EF8C32_terseLabel_en-US" xlink:label="lab_us-gaap_AwardTypeAxis_0D80770E7BD5ADCCFD922D1A33EF8C32" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Award Type</link:label>
    <link:label id="lab_us-gaap_AwardTypeAxis_0D80770E7BD5ADCCFD922D1A33EF8C32_label_en-US" xlink:label="lab_us-gaap_AwardTypeAxis_0D80770E7BD5ADCCFD922D1A33EF8C32" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Award Type [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="loc_us-gaap_AwardTypeAxis_0D80770E7BD5ADCCFD922D1A33EF8C32" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AwardTypeAxis_0D80770E7BD5ADCCFD922D1A33EF8C32" xlink:to="lab_us-gaap_AwardTypeAxis_0D80770E7BD5ADCCFD922D1A33EF8C32" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2CF18FC2A5CB339283052D1A33EF848D_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2CF18FC2A5CB339283052D1A33EF848D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Share Based Compensation Arrangements By Share Based Payment Award Award Type And Plan Name</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2CF18FC2A5CB339283052D1A33EF848D_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2CF18FC2A5CB339283052D1A33EF848D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Equity Award [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2CF18FC2A5CB339283052D1A33EF848D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2CF18FC2A5CB339283052D1A33EF848D" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2CF18FC2A5CB339283052D1A33EF848D" xlink:type="arc" />
    <link:label id="lab_us-gaap_EmployeeStockOptionMember_FEBF52B2ED935EDF0BF52D1A33EF0A74_terseLabel_en-US" xlink:label="lab_us-gaap_EmployeeStockOptionMember_FEBF52B2ED935EDF0BF52D1A33EF0A74" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Stock Option</link:label>
    <link:label id="lab_us-gaap_EmployeeStockOptionMember_FEBF52B2ED935EDF0BF52D1A33EF0A74_label_en-US" xlink:label="lab_us-gaap_EmployeeStockOptionMember_FEBF52B2ED935EDF0BF52D1A33EF0A74" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Employee Stock Option [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EmployeeStockOptionMember" xlink:label="loc_us-gaap_EmployeeStockOptionMember_FEBF52B2ED935EDF0BF52D1A33EF0A74" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EmployeeStockOptionMember_FEBF52B2ED935EDF0BF52D1A33EF0A74" xlink:to="lab_us-gaap_EmployeeStockOptionMember_FEBF52B2ED935EDF0BF52D1A33EF0A74" xlink:type="arc" />
    <link:label id="lab_us-gaap_RestrictedStockMember_89CC01A339FED458504F2D1A33F0D2C8_terseLabel_en-US" xlink:label="lab_us-gaap_RestrictedStockMember_89CC01A339FED458504F2D1A33F0D2C8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Restricted Stock</link:label>
    <link:label id="lab_us-gaap_RestrictedStockMember_89CC01A339FED458504F2D1A33F0D2C8_label_en-US" xlink:label="lab_us-gaap_RestrictedStockMember_89CC01A339FED458504F2D1A33F0D2C8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restricted Stock [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RestrictedStockMember" xlink:label="loc_us-gaap_RestrictedStockMember_89CC01A339FED458504F2D1A33F0D2C8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RestrictedStockMember_89CC01A339FED458504F2D1A33F0D2C8" xlink:to="lab_us-gaap_RestrictedStockMember_89CC01A339FED458504F2D1A33F0D2C8" xlink:type="arc" />
    <link:label id="lab_us-gaap_RestrictedStockUnitsRSUMember_E7D01020431FA5B6CA082D1A33F09D10_terseLabel_en-US" xlink:label="lab_us-gaap_RestrictedStockUnitsRSUMember_E7D01020431FA5B6CA082D1A33F09D10" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Restricted Stock Units (RSUs)</link:label>
    <link:label id="lab_us-gaap_RestrictedStockUnitsRSUMember_E7D01020431FA5B6CA082D1A33F09D10_label_en-US" xlink:label="lab_us-gaap_RestrictedStockUnitsRSUMember_E7D01020431FA5B6CA082D1A33F09D10" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restricted Stock Units (RSUs) [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RestrictedStockUnitsRSUMember" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_E7D01020431FA5B6CA082D1A33F09D10" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RestrictedStockUnitsRSUMember_E7D01020431FA5B6CA082D1A33F09D10" xlink:to="lab_us-gaap_RestrictedStockUnitsRSUMember_E7D01020431FA5B6CA082D1A33F09D10" xlink:type="arc" />
    <link:label id="lab_us-gaap_PerformanceSharesMember_1A89FA8058E30C92E5BB2D1A33F06DA5_terseLabel_en-US" xlink:label="lab_us-gaap_PerformanceSharesMember_1A89FA8058E30C92E5BB2D1A33F06DA5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Performance Shares</link:label>
    <link:label id="lab_us-gaap_PerformanceSharesMember_1A89FA8058E30C92E5BB2D1A33F06DA5_label_en-US" xlink:label="lab_us-gaap_PerformanceSharesMember_1A89FA8058E30C92E5BB2D1A33F06DA5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Performance Shares [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PerformanceSharesMember" xlink:label="loc_us-gaap_PerformanceSharesMember_1A89FA8058E30C92E5BB2D1A33F06DA5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PerformanceSharesMember_1A89FA8058E30C92E5BB2D1A33F06DA5" xlink:to="lab_us-gaap_PerformanceSharesMember_1A89FA8058E30C92E5BB2D1A33F06DA5" xlink:type="arc" />
    <link:label id="lab_srt_RangeAxis_4A320A3B0527129D71D82D1A33F0B64B_terseLabel_en-US" xlink:label="lab_srt_RangeAxis_4A320A3B0527129D71D82D1A33F0B64B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Range [Axis]</link:label>
    <link:label id="lab_srt_RangeAxis_4A320A3B0527129D71D82D1A33F0B64B_label_en-US" xlink:label="lab_srt_RangeAxis_4A320A3B0527129D71D82D1A33F0B64B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Range [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeAxis" xlink:label="loc_srt_RangeAxis_4A320A3B0527129D71D82D1A33F0B64B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_RangeAxis_4A320A3B0527129D71D82D1A33F0B64B" xlink:to="lab_srt_RangeAxis_4A320A3B0527129D71D82D1A33F0B64B" xlink:type="arc" />
    <link:label id="lab_srt_RangeMember_714203EB5056DD83A5072D1A33F1D383_terseLabel_en-US" xlink:label="lab_srt_RangeMember_714203EB5056DD83A5072D1A33F1D383" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Range [Domain]</link:label>
    <link:label id="lab_srt_RangeMember_714203EB5056DD83A5072D1A33F1D383_label_en-US" xlink:label="lab_srt_RangeMember_714203EB5056DD83A5072D1A33F1D383" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Range [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeMember" xlink:label="loc_srt_RangeMember_714203EB5056DD83A5072D1A33F1D383" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_RangeMember_714203EB5056DD83A5072D1A33F1D383" xlink:to="lab_srt_RangeMember_714203EB5056DD83A5072D1A33F1D383" xlink:type="arc" />
    <link:label id="lab_srt_MinimumMember_41D573C5C310B2708A4F2D1A33F18E1A_terseLabel_en-US" xlink:label="lab_srt_MinimumMember_41D573C5C310B2708A4F2D1A33F18E1A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Minimum</link:label>
    <link:label id="lab_srt_MinimumMember_41D573C5C310B2708A4F2D1A33F18E1A_label_en-US" xlink:label="lab_srt_MinimumMember_41D573C5C310B2708A4F2D1A33F18E1A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Minimum [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MinimumMember" xlink:label="loc_srt_MinimumMember_41D573C5C310B2708A4F2D1A33F18E1A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_MinimumMember_41D573C5C310B2708A4F2D1A33F18E1A" xlink:to="lab_srt_MinimumMember_41D573C5C310B2708A4F2D1A33F18E1A" xlink:type="arc" />
    <link:label id="lab_srt_MaximumMember_7051D55BCB6910AAB1DE2D1A33F164C2_terseLabel_en-US" xlink:label="lab_srt_MaximumMember_7051D55BCB6910AAB1DE2D1A33F164C2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Maximum</link:label>
    <link:label id="lab_srt_MaximumMember_7051D55BCB6910AAB1DE2D1A33F164C2_label_en-US" xlink:label="lab_srt_MaximumMember_7051D55BCB6910AAB1DE2D1A33F164C2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Maximum [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MaximumMember" xlink:label="loc_srt_MaximumMember_7051D55BCB6910AAB1DE2D1A33F164C2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_MaximumMember_7051D55BCB6910AAB1DE2D1A33F164C2" xlink:to="lab_srt_MaximumMember_7051D55BCB6910AAB1DE2D1A33F164C2" xlink:type="arc" />
    <link:label id="lab_us-gaap_StatementScenarioAxis_E65C2EF7848D5372426B2D1A33F18D0D_terseLabel_en-US" xlink:label="lab_us-gaap_StatementScenarioAxis_E65C2EF7848D5372426B2D1A33F18D0D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Scenario [Axis]</link:label>
    <link:label id="lab_us-gaap_StatementScenarioAxis_E65C2EF7848D5372426B2D1A33F18D0D_label_en-US" xlink:label="lab_us-gaap_StatementScenarioAxis_E65C2EF7848D5372426B2D1A33F18D0D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Scenario [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementScenarioAxis" xlink:label="loc_us-gaap_StatementScenarioAxis_E65C2EF7848D5372426B2D1A33F18D0D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementScenarioAxis_E65C2EF7848D5372426B2D1A33F18D0D" xlink:to="lab_us-gaap_StatementScenarioAxis_E65C2EF7848D5372426B2D1A33F18D0D" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScenarioUnspecifiedDomain_8A9ADE95CBE2070019622D1A33F1888F_terseLabel_en-US" xlink:label="lab_us-gaap_ScenarioUnspecifiedDomain_8A9ADE95CBE2070019622D1A33F1888F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Scenario, Unspecified [Domain]</link:label>
    <link:label id="lab_us-gaap_ScenarioUnspecifiedDomain_8A9ADE95CBE2070019622D1A33F1888F_label_en-US" xlink:label="lab_us-gaap_ScenarioUnspecifiedDomain_8A9ADE95CBE2070019622D1A33F1888F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Scenario, Unspecified [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="loc_us-gaap_ScenarioUnspecifiedDomain_8A9ADE95CBE2070019622D1A33F1888F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScenarioUnspecifiedDomain_8A9ADE95CBE2070019622D1A33F1888F" xlink:to="lab_us-gaap_ScenarioUnspecifiedDomain_8A9ADE95CBE2070019622D1A33F1888F" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScenarioForecastMember_59CB899535D401B36A3E2D1A33F29E0C_terseLabel_en-US" xlink:label="lab_us-gaap_ScenarioForecastMember_59CB899535D401B36A3E2D1A33F29E0C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Scenario Forecast</link:label>
    <link:label id="lab_us-gaap_ScenarioForecastMember_59CB899535D401B36A3E2D1A33F29E0C_label_en-US" xlink:label="lab_us-gaap_ScenarioForecastMember_59CB899535D401B36A3E2D1A33F29E0C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Scenario, Forecast [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScenarioForecastMember" xlink:label="loc_us-gaap_ScenarioForecastMember_59CB899535D401B36A3E2D1A33F29E0C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScenarioForecastMember_59CB899535D401B36A3E2D1A33F29E0C" xlink:to="lab_us-gaap_ScenarioForecastMember_59CB899535D401B36A3E2D1A33F29E0C" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2A2E260F22DD8B5CC7642D1A33F25C8A_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2A2E260F22DD8B5CC7642D1A33F25C8A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Share Based Compensation Arrangement By Share Based Payment Award [Line Items]</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2A2E260F22DD8B5CC7642D1A33F25C8A_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2A2E260F22DD8B5CC7642D1A33F25C8A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2A2E260F22DD8B5CC7642D1A33F25C8A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2A2E260F22DD8B5CC7642D1A33F25C8A" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2A2E260F22DD8B5CC7642D1A33F25C8A" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_DAA1FE12C71839C1FFFD2D1A33F2538C_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_DAA1FE12C71839C1FFFD2D1A33F2538C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of shares available for grant (in shares)</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_DAA1FE12C71839C1FFFD2D1A33F2538C_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_DAA1FE12C71839C1FFFD2D1A33F2538C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_DAA1FE12C71839C1FFFD2D1A33F2538C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_DAA1FE12C71839C1FFFD2D1A33F2538C" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_DAA1FE12C71839C1FFFD2D1A33F2538C" xlink:type="arc" />
    <link:label id="lab_us-gaap_AllocatedShareBasedCompensationExpense_1DB3A1FBDDE521E213D12D1A33F39E3B_terseLabel_en-US" xlink:label="lab_us-gaap_AllocatedShareBasedCompensationExpense_1DB3A1FBDDE521E213D12D1A33F39E3B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Stock-based compensation expense</link:label>
    <link:label id="lab_us-gaap_AllocatedShareBasedCompensationExpense_1DB3A1FBDDE521E213D12D1A33F39E3B_label_en-US" xlink:label="lab_us-gaap_AllocatedShareBasedCompensationExpense_1DB3A1FBDDE521E213D12D1A33F39E3B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Allocated Share-based Compensation Expense</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AllocatedShareBasedCompensationExpense" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_1DB3A1FBDDE521E213D12D1A33F39E3B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AllocatedShareBasedCompensationExpense_1DB3A1FBDDE521E213D12D1A33F39E3B" xlink:to="lab_us-gaap_AllocatedShareBasedCompensationExpense_1DB3A1FBDDE521E213D12D1A33F39E3B" xlink:type="arc" />
    <link:label id="lab_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_84DC6433C22BCBE06F362D1A33F3E5ED_terseLabel_en-US" xlink:label="lab_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_84DC6433C22BCBE06F362D1A33F3E5ED" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unamortized compensation expense expected to be vested</link:label>
    <link:label id="lab_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_84DC6433C22BCBE06F362D1A33F3E5ED_label_en-US" xlink:label="lab_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_84DC6433C22BCBE06F362D1A33F3E5ED" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_84DC6433C22BCBE06F362D1A33F3E5ED" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_84DC6433C22BCBE06F362D1A33F3E5ED" xlink:to="lab_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_84DC6433C22BCBE06F362D1A33F3E5ED" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_59C6CBD8555817F905A02D1A33F3B455_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_59C6CBD8555817F905A02D1A33F3B455" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Award vesting period (in years)</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_59C6CBD8555817F905A02D1A33F3B455_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_59C6CBD8555817F905A02D1A33F3B455" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_59C6CBD8555817F905A02D1A33F3B455" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_59C6CBD8555817F905A02D1A33F3B455" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_59C6CBD8555817F905A02D1A33F3B455" xlink:type="arc" />
    <link:label id="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod_C64DA6CAA373059B67132D1A33F37237_terseLabel_en-US" xlink:label="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod_C64DA6CAA373059B67132D1A33F37237" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Plan term (in years)</link:label>
    <link:label id="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod_C64DA6CAA373059B67132D1A33F37237_label_en-US" xlink:label="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod_C64DA6CAA373059B67132D1A33F37237" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod_C64DA6CAA373059B67132D1A33F37237" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod_C64DA6CAA373059B67132D1A33F37237" xlink:to="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod_C64DA6CAA373059B67132D1A33F37237" xlink:type="arc" />
    <link:label id="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage_86AF7D1E87686B5573112D1A33F3C6D5_terseLabel_en-US" xlink:label="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage_86AF7D1E87686B5573112D1A33F3C6D5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Percentage of incentive stock awards expected to be vested and awarded of stocks granted (as a percent)</link:label>
    <link:label id="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage_86AF7D1E87686B5573112D1A33F3C6D5_label_en-US" xlink:label="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage_86AF7D1E87686B5573112D1A33F3C6D5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage_86AF7D1E87686B5573112D1A33F3C6D5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage_86AF7D1E87686B5573112D1A33F3C6D5" xlink:to="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage_86AF7D1E87686B5573112D1A33F3C6D5" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_A59AA9BAA2A3C96794B1C56749E5DA43_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_A59AA9BAA2A3C96794B1C56749E5DA43" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Segment Financial Information</link:label>
    <link:label id="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_A59AA9BAA2A3C96794B1C56749E5DA43_label_en-US" xlink:label="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_A59AA9BAA2A3C96794B1C56749E5DA43" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Segment Reporting Information, by Segment [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_A59AA9BAA2A3C96794B1C56749E5DA43" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_A59AA9BAA2A3C96794B1C56749E5DA43" xlink:to="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_A59AA9BAA2A3C96794B1C56749E5DA43" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTextBlock_E838A1E910F4BB3DFDBCC56749E559D7_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTextBlock_E838A1E910F4BB3DFDBCC56749E559D7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Sales by Product</link:label>
    <link:label id="lab_us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTextBlock_E838A1E910F4BB3DFDBCC56749E559D7_label_en-US" xlink:label="lab_us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTextBlock_E838A1E910F4BB3DFDBCC56749E559D7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenue from External Customers by Products and Services [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTextBlock" xlink:label="loc_us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTextBlock_E838A1E910F4BB3DFDBCC56749E559D7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTextBlock_E838A1E910F4BB3DFDBCC56749E559D7" xlink:to="lab_us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTextBlock_E838A1E910F4BB3DFDBCC56749E559D7" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtDisclosureAbstract_C637C0706F4B5FB9ED8C94AD923AA5F2_label_en-US" xlink:label="lab_us-gaap_DebtDisclosureAbstract_C637C0706F4B5FB9ED8C94AD923AA5F2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Disclosure [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtDisclosureAbstract" xlink:label="loc_us-gaap_DebtDisclosureAbstract_C637C0706F4B5FB9ED8C94AD923AA5F2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtDisclosureAbstract_C637C0706F4B5FB9ED8C94AD923AA5F2" xlink:to="lab_us-gaap_DebtDisclosureAbstract_C637C0706F4B5FB9ED8C94AD923AA5F2" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentTable_4314829AB126743A228E94AD923AE700_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentTable_4314829AB126743A228E94AD923AE700" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Long-term Debt Instruments [Table]</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentTable_4314829AB126743A228E94AD923AE700_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentTable_4314829AB126743A228E94AD923AE700" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Long-term Debt Instruments [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentTable" xlink:label="loc_us-gaap_DebtInstrumentTable_4314829AB126743A228E94AD923AE700" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentTable_4314829AB126743A228E94AD923AE700" xlink:to="lab_us-gaap_DebtInstrumentTable_4314829AB126743A228E94AD923AE700" xlink:type="arc" />
    <link:label id="lab_us-gaap_LongtermDebtTypeAxis_D37393735B11D54F8A6494AD923BC88F_terseLabel_en-US" xlink:label="lab_us-gaap_LongtermDebtTypeAxis_D37393735B11D54F8A6494AD923BC88F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Long-term Debt, Type [Axis]</link:label>
    <link:label id="lab_us-gaap_LongtermDebtTypeAxis_D37393735B11D54F8A6494AD923BC88F_label_en-US" xlink:label="lab_us-gaap_LongtermDebtTypeAxis_D37393735B11D54F8A6494AD923BC88F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Debt, Type [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongtermDebtTypeAxis" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_D37393735B11D54F8A6494AD923BC88F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_D37393735B11D54F8A6494AD923BC88F" xlink:to="lab_us-gaap_LongtermDebtTypeAxis_D37393735B11D54F8A6494AD923BC88F" xlink:type="arc" />
    <link:label id="lab_us-gaap_LongtermDebtTypeDomain_993317C805FCF9C6C01D94AD923BC463_terseLabel_en-US" xlink:label="lab_us-gaap_LongtermDebtTypeDomain_993317C805FCF9C6C01D94AD923BC463" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Long-term Debt, Type [Domain]</link:label>
    <link:label id="lab_us-gaap_LongtermDebtTypeDomain_993317C805FCF9C6C01D94AD923BC463_label_en-US" xlink:label="lab_us-gaap_LongtermDebtTypeDomain_993317C805FCF9C6C01D94AD923BC463" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Debt, Type [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_993317C805FCF9C6C01D94AD923BC463" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_993317C805FCF9C6C01D94AD923BC463" xlink:to="lab_us-gaap_LongtermDebtTypeDomain_993317C805FCF9C6C01D94AD923BC463" xlink:type="arc" />
    <link:label id="lab_us-gaap_SeniorNotesMember_2F0C06DC9C9C625AB49A94AD923BAE87_terseLabel_en-US" xlink:label="lab_us-gaap_SeniorNotesMember_2F0C06DC9C9C625AB49A94AD923BAE87" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Senior Notes</link:label>
    <link:label id="lab_us-gaap_SeniorNotesMember_2F0C06DC9C9C625AB49A94AD923BAE87_label_en-US" xlink:label="lab_us-gaap_SeniorNotesMember_2F0C06DC9C9C625AB49A94AD923BAE87" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Senior Notes [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SeniorNotesMember" xlink:label="loc_us-gaap_SeniorNotesMember_2F0C06DC9C9C625AB49A94AD923BAE87" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SeniorNotesMember_2F0C06DC9C9C625AB49A94AD923BAE87" xlink:to="lab_us-gaap_SeniorNotesMember_2F0C06DC9C9C625AB49A94AD923BAE87" xlink:type="arc" />
    <link:label id="lab_us-gaap_LineOfCreditMember_B1DBEFC0305F936F10FC94AD923C958B_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditMember_B1DBEFC0305F936F10FC94AD923C958B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Line of Credit</link:label>
    <link:label id="lab_us-gaap_LineOfCreditMember_B1DBEFC0305F936F10FC94AD923C958B_label_en-US" xlink:label="lab_us-gaap_LineOfCreditMember_B1DBEFC0305F936F10FC94AD923C958B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Line of Credit [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LineOfCreditMember" xlink:label="loc_us-gaap_LineOfCreditMember_B1DBEFC0305F936F10FC94AD923C958B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LineOfCreditMember_B1DBEFC0305F936F10FC94AD923C958B" xlink:to="lab_us-gaap_LineOfCreditMember_B1DBEFC0305F936F10FC94AD923C958B" xlink:type="arc" />
    <link:label id="lab_wab_AlternativeRateMember_EF8E95F0EF242AF170CE94AD923C836D_terseLabel_en-US" xlink:label="lab_wab_AlternativeRateMember_EF8E95F0EF242AF170CE94AD923C836D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Alternative Rate</link:label>
    <link:label id="lab_wab_AlternativeRateMember_EF8E95F0EF242AF170CE94AD923C836D_label_en-US" xlink:label="lab_wab_AlternativeRateMember_EF8E95F0EF242AF170CE94AD923C836D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Alternative Rate [Member]</link:label>
    <link:label id="lab_wab_AlternativeRateMember_EF8E95F0EF242AF170CE94AD923C836D_documentation_en-US" xlink:label="lab_wab_AlternativeRateMember_EF8E95F0EF242AF170CE94AD923C836D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Alternative rate.</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_AlternativeRateMember" xlink:label="loc_wab_AlternativeRateMember_EF8E95F0EF242AF170CE94AD923C836D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_AlternativeRateMember_EF8E95F0EF242AF170CE94AD923C836D" xlink:to="lab_wab_AlternativeRateMember_EF8E95F0EF242AF170CE94AD923C836D" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShortTermDebtTypeAxis_7CB8879D8FA07E04584D94AD923C9820_terseLabel_en-US" xlink:label="lab_us-gaap_ShortTermDebtTypeAxis_7CB8879D8FA07E04584D94AD923C9820" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Short-term Debt, Type [Axis]</link:label>
    <link:label id="lab_us-gaap_ShortTermDebtTypeAxis_7CB8879D8FA07E04584D94AD923C9820_label_en-US" xlink:label="lab_us-gaap_ShortTermDebtTypeAxis_7CB8879D8FA07E04584D94AD923C9820" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Short-term Debt, Type [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShortTermDebtTypeAxis" xlink:label="loc_us-gaap_ShortTermDebtTypeAxis_7CB8879D8FA07E04584D94AD923C9820" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShortTermDebtTypeAxis_7CB8879D8FA07E04584D94AD923C9820" xlink:to="lab_us-gaap_ShortTermDebtTypeAxis_7CB8879D8FA07E04584D94AD923C9820" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShortTermDebtTypeDomain_650B07C5CB7355D0E99A94AD923C3E38_terseLabel_en-US" xlink:label="lab_us-gaap_ShortTermDebtTypeDomain_650B07C5CB7355D0E99A94AD923C3E38" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Short-term Debt, Type [Domain]</link:label>
    <link:label id="lab_us-gaap_ShortTermDebtTypeDomain_650B07C5CB7355D0E99A94AD923C3E38_label_en-US" xlink:label="lab_us-gaap_ShortTermDebtTypeDomain_650B07C5CB7355D0E99A94AD923C3E38" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Short-term Debt, Type [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShortTermDebtTypeDomain" xlink:label="loc_us-gaap_ShortTermDebtTypeDomain_650B07C5CB7355D0E99A94AD923C3E38" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShortTermDebtTypeDomain_650B07C5CB7355D0E99A94AD923C3E38" xlink:to="lab_us-gaap_ShortTermDebtTypeDomain_650B07C5CB7355D0E99A94AD923C3E38" xlink:type="arc" />
    <link:label id="lab_us-gaap_BridgeLoanMember_F6C9E0B4326B873970C994AD923CFE6C_terseLabel_en-US" xlink:label="lab_us-gaap_BridgeLoanMember_F6C9E0B4326B873970C994AD923CFE6C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Bridge Loan</link:label>
    <link:label id="lab_us-gaap_BridgeLoanMember_F6C9E0B4326B873970C994AD923CFE6C_label_en-US" xlink:label="lab_us-gaap_BridgeLoanMember_F6C9E0B4326B873970C994AD923CFE6C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Bridge Loan [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BridgeLoanMember" xlink:label="loc_us-gaap_BridgeLoanMember_F6C9E0B4326B873970C994AD923CFE6C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BridgeLoanMember_F6C9E0B4326B873970C994AD923CFE6C" xlink:to="lab_us-gaap_BridgeLoanMember_F6C9E0B4326B873970C994AD923CFE6C" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentAxis_A412B4BE316ACEFAEC4A94AD923D77E7_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentAxis_A412B4BE316ACEFAEC4A94AD923D77E7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt Instrument</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentAxis_A412B4BE316ACEFAEC4A94AD923D77E7_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentAxis_A412B4BE316ACEFAEC4A94AD923D77E7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:label="loc_us-gaap_DebtInstrumentAxis_A412B4BE316ACEFAEC4A94AD923D77E7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentAxis_A412B4BE316ACEFAEC4A94AD923D77E7" xlink:to="lab_us-gaap_DebtInstrumentAxis_A412B4BE316ACEFAEC4A94AD923D77E7" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentNameDomain_EBA82EFB5BABD94EE29194AD923D4DB1_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentNameDomain_EBA82EFB5BABD94EE29194AD923D4DB1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt Instrument, Name</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentNameDomain_EBA82EFB5BABD94EE29194AD923D4DB1_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentNameDomain_EBA82EFB5BABD94EE29194AD923D4DB1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Name [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_EBA82EFB5BABD94EE29194AD923D4DB1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_EBA82EFB5BABD94EE29194AD923D4DB1" xlink:to="lab_us-gaap_DebtInstrumentNameDomain_EBA82EFB5BABD94EE29194AD923D4DB1" xlink:type="arc" />
    <link:label id="lab_wab_FloatingRateNotesDue2021Member_638E6643DCD1F415841A94AD923DFC46_verboseLabel_en-US" xlink:label="lab_wab_FloatingRateNotesDue2021Member_638E6643DCD1F415841A94AD923DFC46" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Floating Rate Notes, due 2021</link:label>
    <link:label id="lab_wab_FloatingRateNotesDue2021Member_638E6643DCD1F415841A94AD923DFC46_label_en-US" xlink:label="lab_wab_FloatingRateNotesDue2021Member_638E6643DCD1F415841A94AD923DFC46" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Floating Rate Notes Due 2021 [Member]</link:label>
    <link:label id="lab_wab_FloatingRateNotesDue2021Member_638E6643DCD1F415841A94AD923DFC46_documentation_en-US" xlink:label="lab_wab_FloatingRateNotesDue2021Member_638E6643DCD1F415841A94AD923DFC46" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Floating Rate Notes Due 2021 [Member]</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_FloatingRateNotesDue2021Member" xlink:label="loc_wab_FloatingRateNotesDue2021Member_638E6643DCD1F415841A94AD923DFC46" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_FloatingRateNotesDue2021Member_638E6643DCD1F415841A94AD923DFC46" xlink:to="lab_wab_FloatingRateNotesDue2021Member_638E6643DCD1F415841A94AD923DFC46" xlink:type="arc" />
    <link:label id="lab_wab_A4.150PercentSeniorNotesDueTwentyThousandandTwentyFourMember_48C2B0A860550130D0A894AD923E0709_verboseLabel_en-US" xlink:label="lab_wab_A4.150PercentSeniorNotesDueTwentyThousandandTwentyFourMember_48C2B0A860550130D0A894AD923E0709" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">4.15% Senior Notes, due 2024</link:label>
    <link:label id="lab_wab_A4.150PercentSeniorNotesDueTwentyThousandandTwentyFourMember_48C2B0A860550130D0A894AD923E0709_label_en-US" xlink:label="lab_wab_A4.150PercentSeniorNotesDueTwentyThousandandTwentyFourMember_48C2B0A860550130D0A894AD923E0709" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">4.150 Percent Senior Notes Due Twenty Thousand and Twenty Four [Member]</link:label>
    <link:label id="lab_wab_A4.150PercentSeniorNotesDueTwentyThousandandTwentyFourMember_48C2B0A860550130D0A894AD923E0709_documentation_en-US" xlink:label="lab_wab_A4.150PercentSeniorNotesDueTwentyThousandandTwentyFourMember_48C2B0A860550130D0A894AD923E0709" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">4.150 Percent Senior Notes Due Twenty Thousand and Twenty Four [Member]</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_A4.150PercentSeniorNotesDueTwentyThousandandTwentyFourMember" xlink:label="loc_wab_A4.150PercentSeniorNotesDueTwentyThousandandTwentyFourMember_48C2B0A860550130D0A894AD923E0709" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_A4.150PercentSeniorNotesDueTwentyThousandandTwentyFourMember_48C2B0A860550130D0A894AD923E0709" xlink:to="lab_wab_A4.150PercentSeniorNotesDueTwentyThousandandTwentyFourMember_48C2B0A860550130D0A894AD923E0709" xlink:type="arc" />
    <link:label id="lab_wab_A4.70PercentSeniorNotesDueTwentyThousandandTwentySixMember_26732495CAA4AEBD3E9694AD923ED607_verboseLabel_en-US" xlink:label="lab_wab_A4.70PercentSeniorNotesDueTwentyThousandandTwentySixMember_26732495CAA4AEBD3E9694AD923ED607" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">4.70% Senior Notes, due 2028</link:label>
    <link:label id="lab_wab_A4.70PercentSeniorNotesDueTwentyThousandandTwentySixMember_26732495CAA4AEBD3E9694AD923ED607_label_en-US" xlink:label="lab_wab_A4.70PercentSeniorNotesDueTwentyThousandandTwentySixMember_26732495CAA4AEBD3E9694AD923ED607" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">4.70 Percent Senior Notes Due Twenty Thousand and Twenty Six [Member]</link:label>
    <link:label id="lab_wab_A4.70PercentSeniorNotesDueTwentyThousandandTwentySixMember_26732495CAA4AEBD3E9694AD923ED607_documentation_en-US" xlink:label="lab_wab_A4.70PercentSeniorNotesDueTwentyThousandandTwentySixMember_26732495CAA4AEBD3E9694AD923ED607" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">4.70 Percent Senior Notes Due Twenty Thousand and Twenty Six [Member]</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_A4.70PercentSeniorNotesDueTwentyThousandandTwentySixMember" xlink:label="loc_wab_A4.70PercentSeniorNotesDueTwentyThousandandTwentySixMember_26732495CAA4AEBD3E9694AD923ED607" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_A4.70PercentSeniorNotesDueTwentyThousandandTwentySixMember_26732495CAA4AEBD3E9694AD923ED607" xlink:to="lab_wab_A4.70PercentSeniorNotesDueTwentyThousandandTwentySixMember_26732495CAA4AEBD3E9694AD923ED607" xlink:type="arc" />
    <link:label id="lab_wab_A3.45PercentSeniorNotesDueTwoThousandandTwentySixMember_94A1D10FA0FE73FCA4FF94AD923ECF55_terseLabel_en-US" xlink:label="lab_wab_A3.45PercentSeniorNotesDueTwoThousandandTwentySixMember_94A1D10FA0FE73FCA4FF94AD923ECF55" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">3.45% Senior Notes, due 2026</link:label>
    <link:label id="lab_wab_A3.45PercentSeniorNotesDueTwoThousandandTwentySixMember_94A1D10FA0FE73FCA4FF94AD923ECF55_label_en-US" xlink:label="lab_wab_A3.45PercentSeniorNotesDueTwoThousandandTwentySixMember_94A1D10FA0FE73FCA4FF94AD923ECF55" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">3.45 Percent Senior Notes Due Two Thousand and Twenty Six [Member]</link:label>
    <link:label id="lab_wab_A3.45PercentSeniorNotesDueTwoThousandandTwentySixMember_94A1D10FA0FE73FCA4FF94AD923ECF55_documentation_en-US" xlink:label="lab_wab_A3.45PercentSeniorNotesDueTwoThousandandTwentySixMember_94A1D10FA0FE73FCA4FF94AD923ECF55" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">3.45 Percent Senior Notes Due Two Thousand and Twenty Six [Member]</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_A3.45PercentSeniorNotesDueTwoThousandandTwentySixMember" xlink:label="loc_wab_A3.45PercentSeniorNotesDueTwoThousandandTwentySixMember_94A1D10FA0FE73FCA4FF94AD923ECF55" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_A3.45PercentSeniorNotesDueTwoThousandandTwentySixMember_94A1D10FA0FE73FCA4FF94AD923ECF55" xlink:to="lab_wab_A3.45PercentSeniorNotesDueTwoThousandandTwentySixMember_94A1D10FA0FE73FCA4FF94AD923ECF55" xlink:type="arc" />
    <link:label id="lab_wab_A4.375PercentSeniorNotesDueTwentyThousandandTwentyThreeMember_99F7481C8694A9C8B76A94AD923E7F7D_terseLabel_en-US" xlink:label="lab_wab_A4.375PercentSeniorNotesDueTwentyThousandandTwentyThreeMember_99F7481C8694A9C8B76A94AD923E7F7D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">4.375% Senior Notes, due 2023</link:label>
    <link:label id="lab_wab_A4.375PercentSeniorNotesDueTwentyThousandandTwentyThreeMember_99F7481C8694A9C8B76A94AD923E7F7D_label_en-US" xlink:label="lab_wab_A4.375PercentSeniorNotesDueTwentyThousandandTwentyThreeMember_99F7481C8694A9C8B76A94AD923E7F7D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">4.375 Percent Senior Notes Due Twenty Thousand and Twenty Three [Member]</link:label>
    <link:label id="lab_wab_A4.375PercentSeniorNotesDueTwentyThousandandTwentyThreeMember_99F7481C8694A9C8B76A94AD923E7F7D_documentation_en-US" xlink:label="lab_wab_A4.375PercentSeniorNotesDueTwentyThousandandTwentyThreeMember_99F7481C8694A9C8B76A94AD923E7F7D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">4.375 Percent Senior Notes Due Twenty Thousand and Twenty Three [Member]</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_A4.375PercentSeniorNotesDueTwentyThousandandTwentyThreeMember" xlink:label="loc_wab_A4.375PercentSeniorNotesDueTwentyThousandandTwentyThreeMember_99F7481C8694A9C8B76A94AD923E7F7D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_A4.375PercentSeniorNotesDueTwentyThousandandTwentyThreeMember_99F7481C8694A9C8B76A94AD923E7F7D" xlink:to="lab_wab_A4.375PercentSeniorNotesDueTwentyThousandandTwentyThreeMember_99F7481C8694A9C8B76A94AD923E7F7D" xlink:type="arc" />
    <link:label id="lab_wab_TwoThousandandEighteenRefinancingAgreementMember_E3DB057422F3BE984EAF94AD923ECEAC_terseLabel_en-US" xlink:label="lab_wab_TwoThousandandEighteenRefinancingAgreementMember_E3DB057422F3BE984EAF94AD923ECEAC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2018 Refinancing Credit Agreement</link:label>
    <link:label id="lab_wab_TwoThousandandEighteenRefinancingAgreementMember_E3DB057422F3BE984EAF94AD923ECEAC_label_en-US" xlink:label="lab_wab_TwoThousandandEighteenRefinancingAgreementMember_E3DB057422F3BE984EAF94AD923ECEAC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Two Thousand and Eighteen Refinancing Agreement [Member]</link:label>
    <link:label id="lab_wab_TwoThousandandEighteenRefinancingAgreementMember_E3DB057422F3BE984EAF94AD923ECEAC_documentation_en-US" xlink:label="lab_wab_TwoThousandandEighteenRefinancingAgreementMember_E3DB057422F3BE984EAF94AD923ECEAC" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Two Thousand and Eighteen Refinancing Agreement [Member]</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_TwoThousandandEighteenRefinancingAgreementMember" xlink:label="loc_wab_TwoThousandandEighteenRefinancingAgreementMember_E3DB057422F3BE984EAF94AD923ECEAC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_TwoThousandandEighteenRefinancingAgreementMember_E3DB057422F3BE984EAF94AD923ECEAC" xlink:to="lab_wab_TwoThousandandEighteenRefinancingAgreementMember_E3DB057422F3BE984EAF94AD923ECEAC" xlink:type="arc" />
    <link:label id="lab_wab_TwoThousandSixteenRefinancingCreditAgreementMember_43CF46A5AEF8FEE0FE6094AD923E2BD0_terseLabel_en-US" xlink:label="lab_wab_TwoThousandSixteenRefinancingCreditAgreementMember_43CF46A5AEF8FEE0FE6094AD923E2BD0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2016 Refinancing Credit Agreement</link:label>
    <link:label id="lab_wab_TwoThousandSixteenRefinancingCreditAgreementMember_43CF46A5AEF8FEE0FE6094AD923E2BD0_label_en-US" xlink:label="lab_wab_TwoThousandSixteenRefinancingCreditAgreementMember_43CF46A5AEF8FEE0FE6094AD923E2BD0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Two Thousand Sixteen Refinancing Credit Agreement [Member]</link:label>
    <link:label id="lab_wab_TwoThousandSixteenRefinancingCreditAgreementMember_43CF46A5AEF8FEE0FE6094AD923E2BD0_documentation_en-US" xlink:label="lab_wab_TwoThousandSixteenRefinancingCreditAgreementMember_43CF46A5AEF8FEE0FE6094AD923E2BD0" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Two Thousand Sixteen Refinancing Credit Agreement [Member]</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_TwoThousandSixteenRefinancingCreditAgreementMember" xlink:label="loc_wab_TwoThousandSixteenRefinancingCreditAgreementMember_43CF46A5AEF8FEE0FE6094AD923E2BD0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_TwoThousandSixteenRefinancingCreditAgreementMember_43CF46A5AEF8FEE0FE6094AD923E2BD0" xlink:to="lab_wab_TwoThousandSixteenRefinancingCreditAgreementMember_43CF46A5AEF8FEE0FE6094AD923E2BD0" xlink:type="arc" />
    <link:label id="lab_us-gaap_CreditFacilityAxis_60F143695940E05EA4EA94AD923E18CC_terseLabel_en-US" xlink:label="lab_us-gaap_CreditFacilityAxis_60F143695940E05EA4EA94AD923E18CC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Credit Facility</link:label>
    <link:label id="lab_us-gaap_CreditFacilityAxis_60F143695940E05EA4EA94AD923E18CC_label_en-US" xlink:label="lab_us-gaap_CreditFacilityAxis_60F143695940E05EA4EA94AD923E18CC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Credit Facility [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CreditFacilityAxis" xlink:label="loc_us-gaap_CreditFacilityAxis_60F143695940E05EA4EA94AD923E18CC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CreditFacilityAxis_60F143695940E05EA4EA94AD923E18CC" xlink:to="lab_us-gaap_CreditFacilityAxis_60F143695940E05EA4EA94AD923E18CC" xlink:type="arc" />
    <link:label id="lab_us-gaap_CreditFacilityDomain_16E4CC34C6E5D3D0B50A94AD923F8710_terseLabel_en-US" xlink:label="lab_us-gaap_CreditFacilityDomain_16E4CC34C6E5D3D0B50A94AD923F8710" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Credit Facility</link:label>
    <link:label id="lab_us-gaap_CreditFacilityDomain_16E4CC34C6E5D3D0B50A94AD923F8710_label_en-US" xlink:label="lab_us-gaap_CreditFacilityDomain_16E4CC34C6E5D3D0B50A94AD923F8710" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Credit Facility [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CreditFacilityDomain" xlink:label="loc_us-gaap_CreditFacilityDomain_16E4CC34C6E5D3D0B50A94AD923F8710" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CreditFacilityDomain_16E4CC34C6E5D3D0B50A94AD923F8710" xlink:to="lab_us-gaap_CreditFacilityDomain_16E4CC34C6E5D3D0B50A94AD923F8710" xlink:type="arc" />
    <link:label id="lab_us-gaap_RevolvingCreditFacilityMember_4B1C5F6BD92935760B3494AD923F527A_terseLabel_en-US" xlink:label="lab_us-gaap_RevolvingCreditFacilityMember_4B1C5F6BD92935760B3494AD923F527A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Revolving Credit Facility</link:label>
    <link:label id="lab_us-gaap_RevolvingCreditFacilityMember_4B1C5F6BD92935760B3494AD923F527A_label_en-US" xlink:label="lab_us-gaap_RevolvingCreditFacilityMember_4B1C5F6BD92935760B3494AD923F527A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revolving Credit Facility [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevolvingCreditFacilityMember" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_4B1C5F6BD92935760B3494AD923F527A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RevolvingCreditFacilityMember_4B1C5F6BD92935760B3494AD923F527A" xlink:to="lab_us-gaap_RevolvingCreditFacilityMember_4B1C5F6BD92935760B3494AD923F527A" xlink:type="arc" />
    <link:label id="lab_us-gaap_LetterOfCreditMember_50153477CDA51CCB2CAE94AD923F58A7_terseLabel_en-US" xlink:label="lab_us-gaap_LetterOfCreditMember_50153477CDA51CCB2CAE94AD923F58A7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Letter of Credit</link:label>
    <link:label id="lab_us-gaap_LetterOfCreditMember_50153477CDA51CCB2CAE94AD923F58A7_label_en-US" xlink:label="lab_us-gaap_LetterOfCreditMember_50153477CDA51CCB2CAE94AD923F58A7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Letter of Credit [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LetterOfCreditMember" xlink:label="loc_us-gaap_LetterOfCreditMember_50153477CDA51CCB2CAE94AD923F58A7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LetterOfCreditMember_50153477CDA51CCB2CAE94AD923F58A7" xlink:to="lab_us-gaap_LetterOfCreditMember_50153477CDA51CCB2CAE94AD923F58A7" xlink:type="arc" />
    <link:label id="lab_wab_TermLoanMember_641204107225594362F794AD923FF0D0_terseLabel_en-US" xlink:label="lab_wab_TermLoanMember_641204107225594362F794AD923FF0D0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Term Loan</link:label>
    <link:label id="lab_wab_TermLoanMember_641204107225594362F794AD923FF0D0_label_en-US" xlink:label="lab_wab_TermLoanMember_641204107225594362F794AD923FF0D0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Term Loan [Member]</link:label>
    <link:label id="lab_wab_TermLoanMember_641204107225594362F794AD923FF0D0_documentation_en-US" xlink:label="lab_wab_TermLoanMember_641204107225594362F794AD923FF0D0" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Term Loan [Member]</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_TermLoanMember" xlink:label="loc_wab_TermLoanMember_641204107225594362F794AD923FF0D0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_TermLoanMember_641204107225594362F794AD923FF0D0" xlink:to="lab_wab_TermLoanMember_641204107225594362F794AD923FF0D0" xlink:type="arc" />
    <link:label id="lab_wab_DelayedDrawTermLoanMember_A0B931958B907970777F94AD9240533F_terseLabel_en-US" xlink:label="lab_wab_DelayedDrawTermLoanMember_A0B931958B907970777F94AD9240533F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Delayed Draw Term Loan</link:label>
    <link:label id="lab_wab_DelayedDrawTermLoanMember_A0B931958B907970777F94AD9240533F_label_en-US" xlink:label="lab_wab_DelayedDrawTermLoanMember_A0B931958B907970777F94AD9240533F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Delayed Draw Term Loan [Member]</link:label>
    <link:label id="lab_wab_DelayedDrawTermLoanMember_A0B931958B907970777F94AD9240533F_documentation_en-US" xlink:label="lab_wab_DelayedDrawTermLoanMember_A0B931958B907970777F94AD9240533F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Delayed Draw Term Loan [Member]</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_DelayedDrawTermLoanMember" xlink:label="loc_wab_DelayedDrawTermLoanMember_A0B931958B907970777F94AD9240533F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_DelayedDrawTermLoanMember_A0B931958B907970777F94AD9240533F" xlink:to="lab_wab_DelayedDrawTermLoanMember_A0B931958B907970777F94AD9240533F" xlink:type="arc" />
    <link:label id="lab_wab_SwingLineSubFacilityMember_95524C9E0166E06A877294AD92407CFE_terseLabel_en-US" xlink:label="lab_wab_SwingLineSubFacilityMember_95524C9E0166E06A877294AD92407CFE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Swing Line Sub Facility</link:label>
    <link:label id="lab_wab_SwingLineSubFacilityMember_95524C9E0166E06A877294AD92407CFE_label_en-US" xlink:label="lab_wab_SwingLineSubFacilityMember_95524C9E0166E06A877294AD92407CFE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Swing Line Sub Facility [Member]</link:label>
    <link:label id="lab_wab_SwingLineSubFacilityMember_95524C9E0166E06A877294AD92407CFE_documentation_en-US" xlink:label="lab_wab_SwingLineSubFacilityMember_95524C9E0166E06A877294AD92407CFE" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Swing Line Sub Facility [Member]</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_SwingLineSubFacilityMember" xlink:label="loc_wab_SwingLineSubFacilityMember_95524C9E0166E06A877294AD92407CFE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_SwingLineSubFacilityMember_95524C9E0166E06A877294AD92407CFE" xlink:to="lab_wab_SwingLineSubFacilityMember_95524C9E0166E06A877294AD92407CFE" xlink:type="arc" />
    <link:label id="lab_us-gaap_VariableRateAxis_15E1B631AFFDDD6D204394AD9240867D_terseLabel_en-US" xlink:label="lab_us-gaap_VariableRateAxis_15E1B631AFFDDD6D204394AD9240867D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Variable Rate [Axis]</link:label>
    <link:label id="lab_us-gaap_VariableRateAxis_15E1B631AFFDDD6D204394AD9240867D_label_en-US" xlink:label="lab_us-gaap_VariableRateAxis_15E1B631AFFDDD6D204394AD9240867D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Variable Rate [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_VariableRateAxis" xlink:label="loc_us-gaap_VariableRateAxis_15E1B631AFFDDD6D204394AD9240867D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_VariableRateAxis_15E1B631AFFDDD6D204394AD9240867D" xlink:to="lab_us-gaap_VariableRateAxis_15E1B631AFFDDD6D204394AD9240867D" xlink:type="arc" />
    <link:label id="lab_us-gaap_VariableRateDomain_42C50CC123E929E66D5894AD9240F349_terseLabel_en-US" xlink:label="lab_us-gaap_VariableRateDomain_42C50CC123E929E66D5894AD9240F349" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Variable Rate [Domain]</link:label>
    <link:label id="lab_us-gaap_VariableRateDomain_42C50CC123E929E66D5894AD9240F349_label_en-US" xlink:label="lab_us-gaap_VariableRateDomain_42C50CC123E929E66D5894AD9240F349" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Variable Rate [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_VariableRateDomain" xlink:label="loc_us-gaap_VariableRateDomain_42C50CC123E929E66D5894AD9240F349" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_VariableRateDomain_42C50CC123E929E66D5894AD9240F349" xlink:to="lab_us-gaap_VariableRateDomain_42C50CC123E929E66D5894AD9240F349" xlink:type="arc" />
    <link:label id="lab_us-gaap_FederalFundsEffectiveSwapRateMember_4DEEC2BCD6FC2918D3C594AD9240D50E_terseLabel_en-US" xlink:label="lab_us-gaap_FederalFundsEffectiveSwapRateMember_4DEEC2BCD6FC2918D3C594AD9240D50E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Federal Funds Effective Rate</link:label>
    <link:label id="lab_us-gaap_FederalFundsEffectiveSwapRateMember_4DEEC2BCD6FC2918D3C594AD9240D50E_label_en-US" xlink:label="lab_us-gaap_FederalFundsEffectiveSwapRateMember_4DEEC2BCD6FC2918D3C594AD9240D50E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Federal Funds Effective Swap Rate [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FederalFundsEffectiveSwapRateMember" xlink:label="loc_us-gaap_FederalFundsEffectiveSwapRateMember_4DEEC2BCD6FC2918D3C594AD9240D50E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FederalFundsEffectiveSwapRateMember_4DEEC2BCD6FC2918D3C594AD9240D50E" xlink:to="lab_us-gaap_FederalFundsEffectiveSwapRateMember_4DEEC2BCD6FC2918D3C594AD9240D50E" xlink:type="arc" />
    <link:label id="lab_us-gaap_LondonInterbankOfferedRateLIBORMember_23A94B9DB4F890190E1C94AD92405B1E_terseLabel_en-US" xlink:label="lab_us-gaap_LondonInterbankOfferedRateLIBORMember_23A94B9DB4F890190E1C94AD92405B1E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">LIBOR Rate</link:label>
    <link:label id="lab_us-gaap_LondonInterbankOfferedRateLIBORMember_23A94B9DB4F890190E1C94AD92405B1E_label_en-US" xlink:label="lab_us-gaap_LondonInterbankOfferedRateLIBORMember_23A94B9DB4F890190E1C94AD92405B1E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">London Interbank Offered Rate (LIBOR) [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LondonInterbankOfferedRateLIBORMember" xlink:label="loc_us-gaap_LondonInterbankOfferedRateLIBORMember_23A94B9DB4F890190E1C94AD92405B1E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LondonInterbankOfferedRateLIBORMember_23A94B9DB4F890190E1C94AD92405B1E" xlink:to="lab_us-gaap_LondonInterbankOfferedRateLIBORMember_23A94B9DB4F890190E1C94AD92405B1E" xlink:type="arc" />
    <link:label id="lab_us-gaap_BaseRateMember_BE1BC154EF171F61EC4294AD924112D9_terseLabel_en-US" xlink:label="lab_us-gaap_BaseRateMember_BE1BC154EF171F61EC4294AD924112D9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Base Rate</link:label>
    <link:label id="lab_us-gaap_BaseRateMember_BE1BC154EF171F61EC4294AD924112D9_label_en-US" xlink:label="lab_us-gaap_BaseRateMember_BE1BC154EF171F61EC4294AD924112D9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Base Rate [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BaseRateMember" xlink:label="loc_us-gaap_BaseRateMember_BE1BC154EF171F61EC4294AD924112D9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BaseRateMember_BE1BC154EF171F61EC4294AD924112D9" xlink:to="lab_us-gaap_BaseRateMember_BE1BC154EF171F61EC4294AD924112D9" xlink:type="arc" />
    <link:label id="lab_us-gaap_DerivativeInstrumentRiskAxis_9B387708137B077D2BEE94AD92421BFB_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeInstrumentRiskAxis_9B387708137B077D2BEE94AD92421BFB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Derivative Instrument [Axis]</link:label>
    <link:label id="lab_us-gaap_DerivativeInstrumentRiskAxis_9B387708137B077D2BEE94AD92421BFB_label_en-US" xlink:label="lab_us-gaap_DerivativeInstrumentRiskAxis_9B387708137B077D2BEE94AD92421BFB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative Instrument [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_9B387708137B077D2BEE94AD92421BFB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_9B387708137B077D2BEE94AD92421BFB" xlink:to="lab_us-gaap_DerivativeInstrumentRiskAxis_9B387708137B077D2BEE94AD92421BFB" xlink:type="arc" />
    <link:label id="lab_us-gaap_DerivativeContractTypeDomain_B12F76FB811519916AD794AD9242D2D6_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeContractTypeDomain_B12F76FB811519916AD794AD9242D2D6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Derivative Contract Type</link:label>
    <link:label id="lab_us-gaap_DerivativeContractTypeDomain_B12F76FB811519916AD794AD9242D2D6_label_en-US" xlink:label="lab_us-gaap_DerivativeContractTypeDomain_B12F76FB811519916AD794AD9242D2D6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative Contract [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_B12F76FB811519916AD794AD9242D2D6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_B12F76FB811519916AD794AD9242D2D6" xlink:to="lab_us-gaap_DerivativeContractTypeDomain_B12F76FB811519916AD794AD9242D2D6" xlink:type="arc" />
    <link:label id="lab_us-gaap_InterestRateSwapMember_C04605CD28DF600AE81194AD9242D7A6_terseLabel_en-US" xlink:label="lab_us-gaap_InterestRateSwapMember_C04605CD28DF600AE81194AD9242D7A6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Forward Starting Interest Rate Swap Agreement</link:label>
    <link:label id="lab_us-gaap_InterestRateSwapMember_C04605CD28DF600AE81194AD9242D7A6_label_en-US" xlink:label="lab_us-gaap_InterestRateSwapMember_C04605CD28DF600AE81194AD9242D7A6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interest Rate Swap [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InterestRateSwapMember" xlink:label="loc_us-gaap_InterestRateSwapMember_C04605CD28DF600AE81194AD9242D7A6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InterestRateSwapMember_C04605CD28DF600AE81194AD9242D7A6" xlink:to="lab_us-gaap_InterestRateSwapMember_C04605CD28DF600AE81194AD9242D7A6" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentLineItems_F1F1ACE3E2B2BCB102F794AD924313C8_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentLineItems_F1F1ACE3E2B2BCB102F794AD924313C8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt Instrument [Line Items]</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentLineItems_F1F1ACE3E2B2BCB102F794AD924313C8_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentLineItems_F1F1ACE3E2B2BCB102F794AD924313C8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:label="loc_us-gaap_DebtInstrumentLineItems_F1F1ACE3E2B2BCB102F794AD924313C8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentLineItems_F1F1ACE3E2B2BCB102F794AD924313C8" xlink:to="lab_us-gaap_DebtInstrumentLineItems_F1F1ACE3E2B2BCB102F794AD924313C8" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentFaceAmount_27276806A4090B75745F94AD9243C7F9_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentFaceAmount_27276806A4090B75745F94AD9243C7F9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt instrument face amount</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentFaceAmount_27276806A4090B75745F94AD9243C7F9_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentFaceAmount_27276806A4090B75745F94AD9243C7F9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Face Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentFaceAmount" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_27276806A4090B75745F94AD9243C7F9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentFaceAmount_27276806A4090B75745F94AD9243C7F9" xlink:to="lab_us-gaap_DebtInstrumentFaceAmount_27276806A4090B75745F94AD9243C7F9" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentTerm_CC4324918B195579BFE494AD9243DB34_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentTerm_CC4324918B195579BFE494AD9243DB34" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt instrument, term</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentTerm_CC4324918B195579BFE494AD9243DB34_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentTerm_CC4324918B195579BFE494AD9243DB34" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Term</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentTerm" xlink:label="loc_us-gaap_DebtInstrumentTerm_CC4324918B195579BFE494AD9243DB34" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentTerm_CC4324918B195579BFE494AD9243DB34" xlink:to="lab_us-gaap_DebtInstrumentTerm_CC4324918B195579BFE494AD9243DB34" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentRedemptionPricePercentage_9929188C4EFF4135E1DC94AD92444E05_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentRedemptionPricePercentage_9929188C4EFF4135E1DC94AD92444E05" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt issuance price (as a percent)</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentRedemptionPricePercentage_9929188C4EFF4135E1DC94AD92444E05_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentRedemptionPricePercentage_9929188C4EFF4135E1DC94AD92444E05" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Redemption Price, Percentage</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentRedemptionPricePercentage" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPricePercentage_9929188C4EFF4135E1DC94AD92444E05" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPricePercentage_9929188C4EFF4135E1DC94AD92444E05" xlink:to="lab_us-gaap_DebtInstrumentRedemptionPricePercentage_9929188C4EFF4135E1DC94AD92444E05" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_B5A50EE1BC154938DEB594AD924487E0_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_B5A50EE1BC154938DEB594AD924487E0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt instrument, basis spread on variable rate</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_B5A50EE1BC154938DEB594AD924487E0_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_B5A50EE1BC154938DEB594AD924487E0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Basis Spread on Variable Rate</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_B5A50EE1BC154938DEB594AD924487E0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_B5A50EE1BC154938DEB594AD924487E0" xlink:to="lab_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_B5A50EE1BC154938DEB594AD924487E0" xlink:type="arc" />
    <link:label id="lab_us-gaap_DeferredFinanceCostsGross_77984069D84576BAC5AA94AD924464BA_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredFinanceCostsGross_77984069D84576BAC5AA94AD924464BA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deferred financing cost</link:label>
    <link:label id="lab_us-gaap_DeferredFinanceCostsGross_77984069D84576BAC5AA94AD924464BA_label_en-US" xlink:label="lab_us-gaap_DeferredFinanceCostsGross_77984069D84576BAC5AA94AD924464BA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Issuance Costs, Gross</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredFinanceCostsGross" xlink:label="loc_us-gaap_DeferredFinanceCostsGross_77984069D84576BAC5AA94AD924464BA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DeferredFinanceCostsGross_77984069D84576BAC5AA94AD924464BA" xlink:to="lab_us-gaap_DeferredFinanceCostsGross_77984069D84576BAC5AA94AD924464BA" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_D814E8A4D2CBA7C5FB1A94AD9244137B_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_D814E8A4D2CBA7C5FB1A94AD9244137B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Stated interest rate (as a percent)</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_D814E8A4D2CBA7C5FB1A94AD9244137B_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_D814E8A4D2CBA7C5FB1A94AD9244137B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Interest Rate, Stated Percentage</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_D814E8A4D2CBA7C5FB1A94AD9244137B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_D814E8A4D2CBA7C5FB1A94AD9244137B" xlink:to="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_D814E8A4D2CBA7C5FB1A94AD9244137B" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentInterestRateIncreaseDecrease_D6C0C62EC050E702C14D94AD92448407_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateIncreaseDecrease_D6C0C62EC050E702C14D94AD92448407" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Increase in interest rate</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentInterestRateIncreaseDecrease_D6C0C62EC050E702C14D94AD92448407_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateIncreaseDecrease_D6C0C62EC050E702C14D94AD92448407" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Interest Rate, Increase (Decrease)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentInterestRateIncreaseDecrease" xlink:label="loc_us-gaap_DebtInstrumentInterestRateIncreaseDecrease_D6C0C62EC050E702C14D94AD92448407" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentInterestRateIncreaseDecrease_D6C0C62EC050E702C14D94AD92448407" xlink:to="lab_us-gaap_DebtInstrumentInterestRateIncreaseDecrease_D6C0C62EC050E702C14D94AD92448407" xlink:type="arc" />
    <link:label id="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_B1606F2DED8B3C7680A194AD924595DD_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_B1606F2DED8B3C7680A194AD924595DD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Revolving credit facility, amount</link:label>
    <link:label id="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_B1606F2DED8B3C7680A194AD924595DD_label_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_B1606F2DED8B3C7680A194AD924595DD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Line of Credit Facility, Maximum Borrowing Capacity</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_B1606F2DED8B3C7680A194AD924595DD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_B1606F2DED8B3C7680A194AD924595DD" xlink:to="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_B1606F2DED8B3C7680A194AD924595DD" xlink:type="arc" />
    <link:label id="lab_wab_LineofCreditUncommittedAccordionFeature_8CB139DF5AE20E6F926594AD9245F2F8_terseLabel_en-US" xlink:label="lab_wab_LineofCreditUncommittedAccordionFeature_8CB139DF5AE20E6F926594AD9245F2F8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Uncommitted accordion feature</link:label>
    <link:label id="lab_wab_LineofCreditUncommittedAccordionFeature_8CB139DF5AE20E6F926594AD9245F2F8_label_en-US" xlink:label="lab_wab_LineofCreditUncommittedAccordionFeature_8CB139DF5AE20E6F926594AD9245F2F8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Line of Credit Uncommitted Accordion Feature</link:label>
    <link:label id="lab_wab_LineofCreditUncommittedAccordionFeature_8CB139DF5AE20E6F926594AD9245F2F8_documentation_en-US" xlink:label="lab_wab_LineofCreditUncommittedAccordionFeature_8CB139DF5AE20E6F926594AD9245F2F8" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Line of Credit Uncommitted Accordion Feature</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_LineofCreditUncommittedAccordionFeature" xlink:label="loc_wab_LineofCreditUncommittedAccordionFeature_8CB139DF5AE20E6F926594AD9245F2F8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_LineofCreditUncommittedAccordionFeature_8CB139DF5AE20E6F926594AD9245F2F8" xlink:to="lab_wab_LineofCreditUncommittedAccordionFeature_8CB139DF5AE20E6F926594AD9245F2F8" xlink:type="arc" />
    <link:label id="lab_wab_DebtInstrumentRestrictiveCovenantsUnrestrictedCashMaximum_3F67DCC8C0AD113BEB1C94AD9245D26C_terseLabel_en-US" xlink:label="lab_wab_DebtInstrumentRestrictiveCovenantsUnrestrictedCashMaximum_3F67DCC8C0AD113BEB1C94AD9245D26C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Letters of credit subject to financial covenant restrictions</link:label>
    <link:label id="lab_wab_DebtInstrumentRestrictiveCovenantsUnrestrictedCashMaximum_3F67DCC8C0AD113BEB1C94AD9245D26C_label_en-US" xlink:label="lab_wab_DebtInstrumentRestrictiveCovenantsUnrestrictedCashMaximum_3F67DCC8C0AD113BEB1C94AD9245D26C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Restrictive Covenants, Unrestricted Cash, Maximum</link:label>
    <link:label id="lab_wab_DebtInstrumentRestrictiveCovenantsUnrestrictedCashMaximum_3F67DCC8C0AD113BEB1C94AD9245D26C_documentation_en-US" xlink:label="lab_wab_DebtInstrumentRestrictiveCovenantsUnrestrictedCashMaximum_3F67DCC8C0AD113BEB1C94AD9245D26C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Debt Instrument, Restrictive Covenants, Unrestricted Cash, Maximum</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_DebtInstrumentRestrictiveCovenantsUnrestrictedCashMaximum" xlink:label="loc_wab_DebtInstrumentRestrictiveCovenantsUnrestrictedCashMaximum_3F67DCC8C0AD113BEB1C94AD9245D26C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_DebtInstrumentRestrictiveCovenantsUnrestrictedCashMaximum_3F67DCC8C0AD113BEB1C94AD9245D26C" xlink:to="lab_wab_DebtInstrumentRestrictiveCovenantsUnrestrictedCashMaximum_3F67DCC8C0AD113BEB1C94AD9245D26C" xlink:type="arc" />
    <link:label id="lab_wab_DebtInstrumentRestrictiveCovenantsEBITDAtoInterestExpenseRatioMinimum_08A8059659FD1581CB5C94AD9245930E_terseLabel_en-US" xlink:label="lab_wab_DebtInstrumentRestrictiveCovenantsEBITDAtoInterestExpenseRatioMinimum_08A8059659FD1581CB5C94AD9245930E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Interest Coverage ratio</link:label>
    <link:label id="lab_wab_DebtInstrumentRestrictiveCovenantsEBITDAtoInterestExpenseRatioMinimum_08A8059659FD1581CB5C94AD9245930E_label_en-US" xlink:label="lab_wab_DebtInstrumentRestrictiveCovenantsEBITDAtoInterestExpenseRatioMinimum_08A8059659FD1581CB5C94AD9245930E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Restrictive Covenants, EBITDA to Interest Expense Ratio, Minimum</link:label>
    <link:label id="lab_wab_DebtInstrumentRestrictiveCovenantsEBITDAtoInterestExpenseRatioMinimum_08A8059659FD1581CB5C94AD9245930E_documentation_en-US" xlink:label="lab_wab_DebtInstrumentRestrictiveCovenantsEBITDAtoInterestExpenseRatioMinimum_08A8059659FD1581CB5C94AD9245930E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Debt Instrument, Restrictive Covenants, EBITDA to Interest Expense Ratio, Minimum</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_DebtInstrumentRestrictiveCovenantsEBITDAtoInterestExpenseRatioMinimum" xlink:label="loc_wab_DebtInstrumentRestrictiveCovenantsEBITDAtoInterestExpenseRatioMinimum_08A8059659FD1581CB5C94AD9245930E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_DebtInstrumentRestrictiveCovenantsEBITDAtoInterestExpenseRatioMinimum_08A8059659FD1581CB5C94AD9245930E" xlink:to="lab_wab_DebtInstrumentRestrictiveCovenantsEBITDAtoInterestExpenseRatioMinimum_08A8059659FD1581CB5C94AD9245930E" xlink:type="arc" />
    <link:label id="lab_wab_DebtInstrumentRestrictiveCovenantsLeverageRatioMaximum_7122FB7795C3D692856C94AD9245132C_terseLabel_en-US" xlink:label="lab_wab_DebtInstrumentRestrictiveCovenantsLeverageRatioMaximum_7122FB7795C3D692856C94AD9245132C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Leverage ratio</link:label>
    <link:label id="lab_wab_DebtInstrumentRestrictiveCovenantsLeverageRatioMaximum_7122FB7795C3D692856C94AD9245132C_label_en-US" xlink:label="lab_wab_DebtInstrumentRestrictiveCovenantsLeverageRatioMaximum_7122FB7795C3D692856C94AD9245132C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Restrictive Covenants, Leverage Ratio, Maximum</link:label>
    <link:label id="lab_wab_DebtInstrumentRestrictiveCovenantsLeverageRatioMaximum_7122FB7795C3D692856C94AD9245132C_documentation_en-US" xlink:label="lab_wab_DebtInstrumentRestrictiveCovenantsLeverageRatioMaximum_7122FB7795C3D692856C94AD9245132C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Debt Instrument, Restrictive Covenants, Leverage Ratio, Maximum</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_DebtInstrumentRestrictiveCovenantsLeverageRatioMaximum" xlink:label="loc_wab_DebtInstrumentRestrictiveCovenantsLeverageRatioMaximum_7122FB7795C3D692856C94AD9245132C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_DebtInstrumentRestrictiveCovenantsLeverageRatioMaximum_7122FB7795C3D692856C94AD9245132C" xlink:to="lab_wab_DebtInstrumentRestrictiveCovenantsLeverageRatioMaximum_7122FB7795C3D692856C94AD9245132C" xlink:type="arc" />
    <link:label id="lab_wab_DebtInstrumentRestrictiveCovenantsMinimumCashConsiderationTransferredinAcquisition_D6178FB78BA578FF066D94AD9246DDAA_terseLabel_en-US" xlink:label="lab_wab_DebtInstrumentRestrictiveCovenantsMinimumCashConsiderationTransferredinAcquisition_D6178FB78BA578FF066D94AD9246DDAA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash consideration</link:label>
    <link:label id="lab_wab_DebtInstrumentRestrictiveCovenantsMinimumCashConsiderationTransferredinAcquisition_D6178FB78BA578FF066D94AD9246DDAA_label_en-US" xlink:label="lab_wab_DebtInstrumentRestrictiveCovenantsMinimumCashConsiderationTransferredinAcquisition_D6178FB78BA578FF066D94AD9246DDAA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Restrictive Covenants, Minimum Cash Consideration Transferred in Acquisition</link:label>
    <link:label id="lab_wab_DebtInstrumentRestrictiveCovenantsMinimumCashConsiderationTransferredinAcquisition_D6178FB78BA578FF066D94AD9246DDAA_documentation_en-US" xlink:label="lab_wab_DebtInstrumentRestrictiveCovenantsMinimumCashConsiderationTransferredinAcquisition_D6178FB78BA578FF066D94AD9246DDAA" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Debt Instrument, Restrictive Covenants, Minimum Cash Consideration Transferred in Acquisition</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_DebtInstrumentRestrictiveCovenantsMinimumCashConsiderationTransferredinAcquisition" xlink:label="loc_wab_DebtInstrumentRestrictiveCovenantsMinimumCashConsiderationTransferredinAcquisition_D6178FB78BA578FF066D94AD9246DDAA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_DebtInstrumentRestrictiveCovenantsMinimumCashConsiderationTransferredinAcquisition_D6178FB78BA578FF066D94AD9246DDAA" xlink:to="lab_wab_DebtInstrumentRestrictiveCovenantsMinimumCashConsiderationTransferredinAcquisition_D6178FB78BA578FF066D94AD9246DDAA" xlink:type="arc" />
    <link:label id="lab_wab_DebtInstrumentRestrictiveCovenantsLeverageRatioThreeQuartersFollowingAcquisitionMaximum_605856A8D0F150B4EA8094AD92465AFB_terseLabel_en-US" xlink:label="lab_wab_DebtInstrumentRestrictiveCovenantsLeverageRatioThreeQuartersFollowingAcquisitionMaximum_605856A8D0F150B4EA8094AD92465AFB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Maximum Leverage Ratio permitted</link:label>
    <link:label id="lab_wab_DebtInstrumentRestrictiveCovenantsLeverageRatioThreeQuartersFollowingAcquisitionMaximum_605856A8D0F150B4EA8094AD92465AFB_label_en-US" xlink:label="lab_wab_DebtInstrumentRestrictiveCovenantsLeverageRatioThreeQuartersFollowingAcquisitionMaximum_605856A8D0F150B4EA8094AD92465AFB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Restrictive Covenants, Leverage Ratio, Three Quarters Following Acquisition, Maximum</link:label>
    <link:label id="lab_wab_DebtInstrumentRestrictiveCovenantsLeverageRatioThreeQuartersFollowingAcquisitionMaximum_605856A8D0F150B4EA8094AD92465AFB_documentation_en-US" xlink:label="lab_wab_DebtInstrumentRestrictiveCovenantsLeverageRatioThreeQuartersFollowingAcquisitionMaximum_605856A8D0F150B4EA8094AD92465AFB" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Debt Instrument, Restrictive Covenants, Leverage Ratio, Three Quarters Following Acquisition, Maximum</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_DebtInstrumentRestrictiveCovenantsLeverageRatioThreeQuartersFollowingAcquisitionMaximum" xlink:label="loc_wab_DebtInstrumentRestrictiveCovenantsLeverageRatioThreeQuartersFollowingAcquisitionMaximum_605856A8D0F150B4EA8094AD92465AFB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_DebtInstrumentRestrictiveCovenantsLeverageRatioThreeQuartersFollowingAcquisitionMaximum_605856A8D0F150B4EA8094AD92465AFB" xlink:to="lab_wab_DebtInstrumentRestrictiveCovenantsLeverageRatioThreeQuartersFollowingAcquisitionMaximum_605856A8D0F150B4EA8094AD92465AFB" xlink:type="arc" />
    <link:label id="lab_wab_DebtInstrumentRestrictiveCovenantsLeverageRatioFourthandFifthQuarterFollowingAcquisitionMaximum_1DF8A9157269C484DC8194AD9246F6A8_terseLabel_en-US" xlink:label="lab_wab_DebtInstrumentRestrictiveCovenantsLeverageRatioFourthandFifthQuarterFollowingAcquisitionMaximum_1DF8A9157269C484DC8194AD9246F6A8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Restrictive covenants, leverage ratio</link:label>
    <link:label id="lab_wab_DebtInstrumentRestrictiveCovenantsLeverageRatioFourthandFifthQuarterFollowingAcquisitionMaximum_1DF8A9157269C484DC8194AD9246F6A8_label_en-US" xlink:label="lab_wab_DebtInstrumentRestrictiveCovenantsLeverageRatioFourthandFifthQuarterFollowingAcquisitionMaximum_1DF8A9157269C484DC8194AD9246F6A8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Restrictive Covenants, Leverage Ratio, Fourth and Fifth Quarter Following Acquisition, Maximum</link:label>
    <link:label id="lab_wab_DebtInstrumentRestrictiveCovenantsLeverageRatioFourthandFifthQuarterFollowingAcquisitionMaximum_1DF8A9157269C484DC8194AD9246F6A8_documentation_en-US" xlink:label="lab_wab_DebtInstrumentRestrictiveCovenantsLeverageRatioFourthandFifthQuarterFollowingAcquisitionMaximum_1DF8A9157269C484DC8194AD9246F6A8" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Debt Instrument, Restrictive Covenants, Leverage Ratio, Fourth and Fifth Quarter Following Acquisition, Maximum</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_DebtInstrumentRestrictiveCovenantsLeverageRatioFourthandFifthQuarterFollowingAcquisitionMaximum" xlink:label="loc_wab_DebtInstrumentRestrictiveCovenantsLeverageRatioFourthandFifthQuarterFollowingAcquisitionMaximum_1DF8A9157269C484DC8194AD9246F6A8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_DebtInstrumentRestrictiveCovenantsLeverageRatioFourthandFifthQuarterFollowingAcquisitionMaximum_1DF8A9157269C484DC8194AD9246F6A8" xlink:to="lab_wab_DebtInstrumentRestrictiveCovenantsLeverageRatioFourthandFifthQuarterFollowingAcquisitionMaximum_1DF8A9157269C484DC8194AD9246F6A8" xlink:type="arc" />
    <link:label id="lab_us-gaap_DerivativeFixedInterestRate_9CB5C1F7FA1B4A74D26A94AD92461966_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeFixedInterestRate_9CB5C1F7FA1B4A74D26A94AD92461966" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Interest rate on notional value (as a percent)</link:label>
    <link:label id="lab_us-gaap_DerivativeFixedInterestRate_9CB5C1F7FA1B4A74D26A94AD92461966_label_en-US" xlink:label="lab_us-gaap_DerivativeFixedInterestRate_9CB5C1F7FA1B4A74D26A94AD92461966" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative, Fixed Interest Rate</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeFixedInterestRate" xlink:label="loc_us-gaap_DerivativeFixedInterestRate_9CB5C1F7FA1B4A74D26A94AD92461966" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeFixedInterestRate_9CB5C1F7FA1B4A74D26A94AD92461966" xlink:to="lab_us-gaap_DerivativeFixedInterestRate_9CB5C1F7FA1B4A74D26A94AD92461966" xlink:type="arc" />
    <link:label id="lab_us-gaap_DerivativeLiabilityNotionalAmount_B741F3BC7E87ED50D8F194AD92463748_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeLiabilityNotionalAmount_B741F3BC7E87ED50D8F194AD92463748" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Interest rate swap agreements, notional amount</link:label>
    <link:label id="lab_us-gaap_DerivativeLiabilityNotionalAmount_B741F3BC7E87ED50D8F194AD92463748_label_en-US" xlink:label="lab_us-gaap_DerivativeLiabilityNotionalAmount_B741F3BC7E87ED50D8F194AD92463748" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative Liability, Notional Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeLiabilityNotionalAmount" xlink:label="loc_us-gaap_DerivativeLiabilityNotionalAmount_B741F3BC7E87ED50D8F194AD92463748" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeLiabilityNotionalAmount_B741F3BC7E87ED50D8F194AD92463748" xlink:to="lab_us-gaap_DerivativeLiabilityNotionalAmount_B741F3BC7E87ED50D8F194AD92463748" xlink:type="arc" />
    <link:label id="lab_us-gaap_LineOfCreditFacilityExpirationPeriod_E57D17FE3969709C980C94AD92479D82_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityExpirationPeriod_E57D17FE3969709C980C94AD92479D82" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Credit facility loan term, years</link:label>
    <link:label id="lab_us-gaap_LineOfCreditFacilityExpirationPeriod_E57D17FE3969709C980C94AD92479D82_label_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityExpirationPeriod_E57D17FE3969709C980C94AD92479D82" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Line of Credit Facility, Expiration Period</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LineOfCreditFacilityExpirationPeriod" xlink:label="loc_us-gaap_LineOfCreditFacilityExpirationPeriod_E57D17FE3969709C980C94AD92479D82" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LineOfCreditFacilityExpirationPeriod_E57D17FE3969709C980C94AD92479D82" xlink:to="lab_us-gaap_LineOfCreditFacilityExpirationPeriod_E57D17FE3969709C980C94AD92479D82" xlink:type="arc" />
    <link:label id="lab_us-gaap_LineOfCreditFacilityCommitmentFeePercentage_5F1F456F98AC7AFEDF0D94C087ECAF57_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityCommitmentFeePercentage_5F1F456F98AC7AFEDF0D94C087ECAF57" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Commitment fee</link:label>
    <link:label id="lab_us-gaap_LineOfCreditFacilityCommitmentFeePercentage_5F1F456F98AC7AFEDF0D94C087ECAF57_label_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityCommitmentFeePercentage_5F1F456F98AC7AFEDF0D94C087ECAF57" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Line of Credit Facility, Commitment Fee Percentage</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LineOfCreditFacilityCommitmentFeePercentage" xlink:label="loc_us-gaap_LineOfCreditFacilityCommitmentFeePercentage_5F1F456F98AC7AFEDF0D94C087ECAF57" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LineOfCreditFacilityCommitmentFeePercentage_5F1F456F98AC7AFEDF0D94C087ECAF57" xlink:to="lab_us-gaap_LineOfCreditFacilityCommitmentFeePercentage_5F1F456F98AC7AFEDF0D94C087ECAF57" xlink:type="arc" />
    <link:label id="lab_us-gaap_LesseeLeaseDescriptionTable_08B6C6E1034921468BAC8E532B1C4162_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeLeaseDescriptionTable_08B6C6E1034921468BAC8E532B1C4162" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Lessee, Lease, Description [Table]</link:label>
    <link:label id="lab_us-gaap_LesseeLeaseDescriptionTable_08B6C6E1034921468BAC8E532B1C4162_label_en-US" xlink:label="lab_us-gaap_LesseeLeaseDescriptionTable_08B6C6E1034921468BAC8E532B1C4162" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee, Lease, Description [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LesseeLeaseDescriptionTable" xlink:label="loc_us-gaap_LesseeLeaseDescriptionTable_08B6C6E1034921468BAC8E532B1C4162" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeLeaseDescriptionTable_08B6C6E1034921468BAC8E532B1C4162" xlink:to="lab_us-gaap_LesseeLeaseDescriptionTable_08B6C6E1034921468BAC8E532B1C4162" xlink:type="arc" />
    <link:label id="lab_us-gaap_LesseeLeaseDescriptionLineItems_0586EE15EB30C29D17168E532B1E48AC_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeLeaseDescriptionLineItems_0586EE15EB30C29D17168E532B1E48AC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Lessee, Lease, Description [Line Items]</link:label>
    <link:label id="lab_us-gaap_LesseeLeaseDescriptionLineItems_0586EE15EB30C29D17168E532B1E48AC_label_en-US" xlink:label="lab_us-gaap_LesseeLeaseDescriptionLineItems_0586EE15EB30C29D17168E532B1E48AC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee, Lease, Description [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LesseeLeaseDescriptionLineItems" xlink:label="loc_us-gaap_LesseeLeaseDescriptionLineItems_0586EE15EB30C29D17168E532B1E48AC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_0586EE15EB30C29D17168E532B1E48AC" xlink:to="lab_us-gaap_LesseeLeaseDescriptionLineItems_0586EE15EB30C29D17168E532B1E48AC" xlink:type="arc" />
    <link:label id="lab_wab_LesseeWeightedAverageDiscountRatePercent_35F322BA6D2BB4258E7D8E7330280BCB_verboseLabel_en-US" xlink:label="lab_wab_LesseeWeightedAverageDiscountRatePercent_35F322BA6D2BB4258E7D8E7330280BCB" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Discount rate</link:label>
    <link:label id="lab_wab_LesseeWeightedAverageDiscountRatePercent_35F322BA6D2BB4258E7D8E7330280BCB_label_en-US" xlink:label="lab_wab_LesseeWeightedAverageDiscountRatePercent_35F322BA6D2BB4258E7D8E7330280BCB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee, Weighted Average Discount Rate, Percent</link:label>
    <link:label id="lab_wab_LesseeWeightedAverageDiscountRatePercent_35F322BA6D2BB4258E7D8E7330280BCB_documentation_en-US" xlink:label="lab_wab_LesseeWeightedAverageDiscountRatePercent_35F322BA6D2BB4258E7D8E7330280BCB" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Lessee, Weighted Average Discount Rate, Percent</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_LesseeWeightedAverageDiscountRatePercent" xlink:label="loc_wab_LesseeWeightedAverageDiscountRatePercent_35F322BA6D2BB4258E7D8E7330280BCB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_LesseeWeightedAverageDiscountRatePercent_35F322BA6D2BB4258E7D8E7330280BCB" xlink:to="lab_wab_LesseeWeightedAverageDiscountRatePercent_35F322BA6D2BB4258E7D8E7330280BCB" xlink:type="arc" />
    <link:label id="lab_us-gaap_StatementOfCashFlowsAbstract_3C3F1A00074480C05DFFC567481110C3_label_en-US" xlink:label="lab_us-gaap_StatementOfCashFlowsAbstract_3C3F1A00074480C05DFFC567481110C3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement of Cash Flows [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementOfCashFlowsAbstract" xlink:label="loc_us-gaap_StatementOfCashFlowsAbstract_3C3F1A00074480C05DFFC567481110C3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementOfCashFlowsAbstract_3C3F1A00074480C05DFFC567481110C3" xlink:to="lab_us-gaap_StatementOfCashFlowsAbstract_3C3F1A00074480C05DFFC567481110C3" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommonStockDividendsPerShareCashPaid_4D7856237A6666DFE8B7C56748117F06_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockDividendsPerShareCashPaid_4D7856237A6666DFE8B7C56748117F06" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash dividends, per share (in dollars per share)</link:label>
    <link:label id="lab_us-gaap_CommonStockDividendsPerShareCashPaid_4D7856237A6666DFE8B7C56748117F06_label_en-US" xlink:label="lab_us-gaap_CommonStockDividendsPerShareCashPaid_4D7856237A6666DFE8B7C56748117F06" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Common Stock, Dividends, Per Share, Cash Paid</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommonStockDividendsPerShareCashPaid" xlink:label="loc_us-gaap_CommonStockDividendsPerShareCashPaid_4D7856237A6666DFE8B7C56748117F06" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockDividendsPerShareCashPaid_4D7856237A6666DFE8B7C56748117F06" xlink:to="lab_us-gaap_CommonStockDividendsPerShareCashPaid_4D7856237A6666DFE8B7C56748117F06" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncomeTaxDisclosureAbstract_9780B9615C58F1BD68AC508320338863_label_en-US" xlink:label="lab_us-gaap_IncomeTaxDisclosureAbstract_9780B9615C58F1BD68AC508320338863" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Tax Disclosure [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxDisclosureAbstract" xlink:label="loc_us-gaap_IncomeTaxDisclosureAbstract_9780B9615C58F1BD68AC508320338863" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeTaxDisclosureAbstract_9780B9615C58F1BD68AC508320338863" xlink:to="lab_us-gaap_IncomeTaxDisclosureAbstract_9780B9615C58F1BD68AC508320338863" xlink:type="arc" />
    <link:label id="lab_us-gaap_EffectiveIncomeTaxRateContinuingOperations_94FE618091851826641750D2FC2E1610_terseLabel_en-US" xlink:label="lab_us-gaap_EffectiveIncomeTaxRateContinuingOperations_94FE618091851826641750D2FC2E1610" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Effective tax rate</link:label>
    <link:label id="lab_us-gaap_EffectiveIncomeTaxRateContinuingOperations_94FE618091851826641750D2FC2E1610_label_en-US" xlink:label="lab_us-gaap_EffectiveIncomeTaxRateContinuingOperations_94FE618091851826641750D2FC2E1610" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Effective Income Tax Rate Reconciliation, Percent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EffectiveIncomeTaxRateContinuingOperations" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_94FE618091851826641750D2FC2E1610" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_94FE618091851826641750D2FC2E1610" xlink:to="lab_us-gaap_EffectiveIncomeTaxRateContinuingOperations_94FE618091851826641750D2FC2E1610" xlink:type="arc" />
    <link:label id="lab_us-gaap_UnrecognizedTaxBenefits_E99722F8508D219D363950832034AACD_terseLabel_en-US" xlink:label="lab_us-gaap_UnrecognizedTaxBenefits_E99722F8508D219D363950832034AACD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unrecognized tax benefits</link:label>
    <link:label id="lab_us-gaap_UnrecognizedTaxBenefits_E99722F8508D219D363950832034AACD_label_en-US" xlink:label="lab_us-gaap_UnrecognizedTaxBenefits_E99722F8508D219D363950832034AACD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Unrecognized Tax Benefits</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UnrecognizedTaxBenefits" xlink:label="loc_us-gaap_UnrecognizedTaxBenefits_E99722F8508D219D363950832034AACD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_UnrecognizedTaxBenefits_E99722F8508D219D363950832034AACD" xlink:to="lab_us-gaap_UnrecognizedTaxBenefits_E99722F8508D219D363950832034AACD" xlink:type="arc" />
    <link:label id="lab_us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate_D4D41FC755D2EE6558485083203409AC_terseLabel_en-US" xlink:label="lab_us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate_D4D41FC755D2EE6558485083203409AC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unrecognized tax benefits if recognized that would affect effective tax rate</link:label>
    <link:label id="lab_us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate_D4D41FC755D2EE6558485083203409AC_label_en-US" xlink:label="lab_us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate_D4D41FC755D2EE6558485083203409AC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Unrecognized Tax Benefits that Would Impact Effective Tax Rate</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate_D4D41FC755D2EE6558485083203409AC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate_D4D41FC755D2EE6558485083203409AC" xlink:to="lab_us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate_D4D41FC755D2EE6558485083203409AC" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncomeTaxExaminationInterestAccrued_FBE674659A4A8B79A3FE50832034E1B4_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxExaminationInterestAccrued_FBE674659A4A8B79A3FE50832034E1B4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accrued interest related to uncertain tax positions</link:label>
    <link:label id="lab_us-gaap_IncomeTaxExaminationInterestAccrued_FBE674659A4A8B79A3FE50832034E1B4_label_en-US" xlink:label="lab_us-gaap_IncomeTaxExaminationInterestAccrued_FBE674659A4A8B79A3FE50832034E1B4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Tax Examination, Interest Accrued</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxExaminationInterestAccrued" xlink:label="loc_us-gaap_IncomeTaxExaminationInterestAccrued_FBE674659A4A8B79A3FE50832034E1B4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeTaxExaminationInterestAccrued_FBE674659A4A8B79A3FE50832034E1B4" xlink:to="lab_us-gaap_IncomeTaxExaminationInterestAccrued_FBE674659A4A8B79A3FE50832034E1B4" xlink:type="arc" />
    <link:label id="lab_us-gaap_SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit_2A8FA11423C3C7667B6E508320366094_terseLabel_en-US" xlink:label="lab_us-gaap_SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit_2A8FA11423C3C7667B6E508320366094" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unrecognized tax benefits subject to change within the next 12 months</link:label>
    <link:label id="lab_us-gaap_SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit_2A8FA11423C3C7667B6E508320366094_label_en-US" xlink:label="lab_us-gaap_SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit_2A8FA11423C3C7667B6E508320366094" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit" xlink:label="loc_us-gaap_SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit_2A8FA11423C3C7667B6E508320366094" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit_2A8FA11423C3C7667B6E508320366094" xlink:to="lab_us-gaap_SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit_2A8FA11423C3C7667B6E508320366094" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_0DCDC0C947855AD3ACF2C56748FCED53_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_0DCDC0C947855AD3ACF2C56748FCED53" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Defined Benefit Plans Disclosures [Table]</link:label>
    <link:label id="lab_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_0DCDC0C947855AD3ACF2C56748FCED53_label_en-US" xlink:label="lab_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_0DCDC0C947855AD3ACF2C56748FCED53" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Defined Benefit Plans Disclosures [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_0DCDC0C947855AD3ACF2C56748FCED53" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_0DCDC0C947855AD3ACF2C56748FCED53" xlink:to="lab_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_0DCDC0C947855AD3ACF2C56748FCED53" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_F3BF22DA0A9E03FE2ABDC56748FC87BD_terseLabel_en-US" xlink:label="lab_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_F3BF22DA0A9E03FE2ABDC56748FC87BD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other Postretirement Benefit Plan</link:label>
    <link:label id="lab_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_F3BF22DA0A9E03FE2ABDC56748FC87BD_label_en-US" xlink:label="lab_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_F3BF22DA0A9E03FE2ABDC56748FC87BD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Postretirement Benefits Plan [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_F3BF22DA0A9E03FE2ABDC56748FC87BD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_F3BF22DA0A9E03FE2ABDC56748FC87BD" xlink:to="lab_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_F3BF22DA0A9E03FE2ABDC56748FC87BD" xlink:type="arc" />
    <link:label id="lab_us-gaap_DefinedBenefitPlanDisclosureLineItems_A17B023DE219A4611836C56748FC83DC_terseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanDisclosureLineItems_A17B023DE219A4611836C56748FC83DC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Defined Benefit Plan Disclosure [Line Items]</link:label>
    <link:label id="lab_us-gaap_DefinedBenefitPlanDisclosureLineItems_A17B023DE219A4611836C56748FC83DC_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanDisclosureLineItems_A17B023DE219A4611836C56748FC83DC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Defined Benefit Plan Disclosure [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_A17B023DE219A4611836C56748FC83DC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_A17B023DE219A4611836C56748FC83DC" xlink:to="lab_us-gaap_DefinedBenefitPlanDisclosureLineItems_A17B023DE219A4611836C56748FC83DC" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTextBlock_3A228092A7D05D9630BEC56748FCD3E6_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTextBlock_3A228092A7D05D9630BEC56748FCD3E6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Components of Net Periodic Benefit Cost</link:label>
    <link:label id="lab_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTextBlock_3A228092A7D05D9630BEC56748FCD3E6_label_en-US" xlink:label="lab_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTextBlock_3A228092A7D05D9630BEC56748FCD3E6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Defined Benefit Plans Disclosures [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTextBlock" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTextBlock_3A228092A7D05D9630BEC56748FCD3E6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTextBlock_3A228092A7D05D9630BEC56748FCD3E6" xlink:to="lab_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTextBlock_3A228092A7D05D9630BEC56748FCD3E6" xlink:type="arc" />
    <link:label id="lab_us-gaap_FairValueDisclosuresAbstract_BF201C883AF63C47038FC56747E261F8_label_en-US" xlink:label="lab_us-gaap_FairValueDisclosuresAbstract_BF201C883AF63C47038FC56747E261F8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value Disclosures [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueDisclosuresAbstract" xlink:label="loc_us-gaap_FairValueDisclosuresAbstract_BF201C883AF63C47038FC56747E261F8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueDisclosuresAbstract_BF201C883AF63C47038FC56747E261F8" xlink:to="lab_us-gaap_FairValueDisclosuresAbstract_BF201C883AF63C47038FC56747E261F8" xlink:type="arc" />
    <link:label id="lab_us-gaap_FairValueMeasurementInputsDisclosureTextBlock_2BB30BBAF21C74D92AEDC56747E29025_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueMeasurementInputsDisclosureTextBlock_2BB30BBAF21C74D92AEDC56747E29025" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair Value Measurement and Fair Value of Financial Instruments</link:label>
    <link:label id="lab_us-gaap_FairValueMeasurementInputsDisclosureTextBlock_2BB30BBAF21C74D92AEDC56747E29025_label_en-US" xlink:label="lab_us-gaap_FairValueMeasurementInputsDisclosureTextBlock_2BB30BBAF21C74D92AEDC56747E29025" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value Measurement and Measurement Inputs, Recurring and Nonrecurring [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueMeasurementInputsDisclosureTextBlock" xlink:label="loc_us-gaap_FairValueMeasurementInputsDisclosureTextBlock_2BB30BBAF21C74D92AEDC56747E29025" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueMeasurementInputsDisclosureTextBlock_2BB30BBAF21C74D92AEDC56747E29025" xlink:to="lab_us-gaap_FairValueMeasurementInputsDisclosureTextBlock_2BB30BBAF21C74D92AEDC56747E29025" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_134CC61332A1380CBE4294AD92A4EFEA_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_134CC61332A1380CBE4294AD92A4EFEA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule Of Finite Lived Intangible Assets [Table]</link:label>
    <link:label id="lab_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_134CC61332A1380CBE4294AD92A4EFEA_label_en-US" xlink:label="lab_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_134CC61332A1380CBE4294AD92A4EFEA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Finite-Lived Intangible Assets [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_134CC61332A1380CBE4294AD92A4EFEA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_134CC61332A1380CBE4294AD92A4EFEA" xlink:to="lab_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_134CC61332A1380CBE4294AD92A4EFEA" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_780EEB683AE4D6186C3994AD92A40E81_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_780EEB683AE4D6186C3994AD92A40E81" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Finite Lived Intangible Assets By Major Class</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_780EEB683AE4D6186C3994AD92A40E81_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_780EEB683AE4D6186C3994AD92A40E81" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets by Major Class [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_780EEB683AE4D6186C3994AD92A40E81" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_780EEB683AE4D6186C3994AD92A40E81" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_780EEB683AE4D6186C3994AD92A40E81" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_CB4A1A2954E739ECBFB794AD92A4BB40_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_CB4A1A2954E739ECBFB794AD92A4BB40" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Finite Lived Intangible Assets Major Class Name</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_CB4A1A2954E739ECBFB794AD92A4BB40_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_CB4A1A2954E739ECBFB794AD92A4BB40" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Major Class Name [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_CB4A1A2954E739ECBFB794AD92A4BB40" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_CB4A1A2954E739ECBFB794AD92A4BB40" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_CB4A1A2954E739ECBFB794AD92A4BB40" xlink:type="arc" />
    <link:label id="lab_wab_IntellectualPropertyPatentsAndOtherMember_993A263EE0F8652BFC1894AD92A5F3CE_terseLabel_en-US" xlink:label="lab_wab_IntellectualPropertyPatentsAndOtherMember_993A263EE0F8652BFC1894AD92A5F3CE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Intellectual property, patents, non-compete and other intangibles</link:label>
    <link:label id="lab_wab_IntellectualPropertyPatentsAndOtherMember_993A263EE0F8652BFC1894AD92A5F3CE_label_en-US" xlink:label="lab_wab_IntellectualPropertyPatentsAndOtherMember_993A263EE0F8652BFC1894AD92A5F3CE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Intellectual Property, Patents And Other [Member]</link:label>
    <link:label id="lab_wab_IntellectualPropertyPatentsAndOtherMember_993A263EE0F8652BFC1894AD92A5F3CE_documentation_en-US" xlink:label="lab_wab_IntellectualPropertyPatentsAndOtherMember_993A263EE0F8652BFC1894AD92A5F3CE" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Intellectual Property, Patents and other.</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_IntellectualPropertyPatentsAndOtherMember" xlink:label="loc_wab_IntellectualPropertyPatentsAndOtherMember_993A263EE0F8652BFC1894AD92A5F3CE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_IntellectualPropertyPatentsAndOtherMember_993A263EE0F8652BFC1894AD92A5F3CE" xlink:to="lab_wab_IntellectualPropertyPatentsAndOtherMember_993A263EE0F8652BFC1894AD92A5F3CE" xlink:type="arc" />
    <link:label id="lab_us-gaap_CustomerRelationshipsMember_DAFC3B33CC273CA62EFE94AD92A5C659_terseLabel_en-US" xlink:label="lab_us-gaap_CustomerRelationshipsMember_DAFC3B33CC273CA62EFE94AD92A5C659" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Customer relationships</link:label>
    <link:label id="lab_us-gaap_CustomerRelationshipsMember_DAFC3B33CC273CA62EFE94AD92A5C659_label_en-US" xlink:label="lab_us-gaap_CustomerRelationshipsMember_DAFC3B33CC273CA62EFE94AD92A5C659" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Customer Relationships [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CustomerRelationshipsMember" xlink:label="loc_us-gaap_CustomerRelationshipsMember_DAFC3B33CC273CA62EFE94AD92A5C659" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CustomerRelationshipsMember_DAFC3B33CC273CA62EFE94AD92A5C659" xlink:to="lab_us-gaap_CustomerRelationshipsMember_DAFC3B33CC273CA62EFE94AD92A5C659" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsLineItems_ED47F25C32ECF1C6D7ED94AD92A56A82_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsLineItems_ED47F25C32ECF1C6D7ED94AD92A56A82" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Finite Lived Intangible Assets [Line Items]</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsLineItems_ED47F25C32ECF1C6D7ED94AD92A56A82_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsLineItems_ED47F25C32ECF1C6D7ED94AD92A56A82" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_ED47F25C32ECF1C6D7ED94AD92A56A82" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_ED47F25C32ECF1C6D7ED94AD92A56A82" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsLineItems_ED47F25C32ECF1C6D7ED94AD92A56A82" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsNet_69CB59CD73A6F7B66B9194AD92A5E093_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsNet_69CB59CD73A6F7B66B9194AD92A5E093" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Intangible assets, net of accumulated amortization</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsNet_69CB59CD73A6F7B66B9194AD92A5E093_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsNet_69CB59CD73A6F7B66B9194AD92A5E093" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsNet" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_69CB59CD73A6F7B66B9194AD92A5E093" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_69CB59CD73A6F7B66B9194AD92A5E093" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsNet_69CB59CD73A6F7B66B9194AD92A5E093" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_C52E18A02943DB15BA2A94AD92A5ED7C_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_C52E18A02943DB15BA2A94AD92A5ED7C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Intangible assets, accumulated amortization</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_C52E18A02943DB15BA2A94AD92A5ED7C_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_C52E18A02943DB15BA2A94AD92A5ED7C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Accumulated Amortization</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_C52E18A02943DB15BA2A94AD92A5ED7C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_C52E18A02943DB15BA2A94AD92A5ED7C" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_C52E18A02943DB15BA2A94AD92A5ED7C" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncomeStatementAbstract_D1ECCD02FA0F120E1BEC7536A7607A86_label_en-US" xlink:label="lab_us-gaap_IncomeStatementAbstract_D1ECCD02FA0F120E1BEC7536A7607A86" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Statement [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeStatementAbstract" xlink:label="loc_us-gaap_IncomeStatementAbstract_D1ECCD02FA0F120E1BEC7536A7607A86" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeStatementAbstract_D1ECCD02FA0F120E1BEC7536A7607A86" xlink:to="lab_us-gaap_IncomeStatementAbstract_D1ECCD02FA0F120E1BEC7536A7607A86" xlink:type="arc" />
    <link:label id="lab_us-gaap_StatementTable_3EBC809A37BAE2ED6FD97536A7607D00_terseLabel_en-US" xlink:label="lab_us-gaap_StatementTable_3EBC809A37BAE2ED6FD97536A7607D00" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Statement [Table]</link:label>
    <link:label id="lab_us-gaap_StatementTable_3EBC809A37BAE2ED6FD97536A7607D00_label_en-US" xlink:label="lab_us-gaap_StatementTable_3EBC809A37BAE2ED6FD97536A7607D00" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_3EBC809A37BAE2ED6FD97536A7607D00" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementTable_3EBC809A37BAE2ED6FD97536A7607D00" xlink:to="lab_us-gaap_StatementTable_3EBC809A37BAE2ED6FD97536A7607D00" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProductMember_A2EA69E11C2A6194FE107536A760EA5E_terseLabel_en-US" xlink:label="lab_us-gaap_ProductMember_A2EA69E11C2A6194FE107536A760EA5E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Goods</link:label>
    <link:label id="lab_us-gaap_ProductMember_A2EA69E11C2A6194FE107536A760EA5E_label_en-US" xlink:label="lab_us-gaap_ProductMember_A2EA69E11C2A6194FE107536A760EA5E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Product [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProductMember" xlink:label="loc_us-gaap_ProductMember_A2EA69E11C2A6194FE107536A760EA5E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProductMember_A2EA69E11C2A6194FE107536A760EA5E" xlink:to="lab_us-gaap_ProductMember_A2EA69E11C2A6194FE107536A760EA5E" xlink:type="arc" />
    <link:label id="lab_us-gaap_ServiceMember_DCDB3F2AE97EF9BA1F427536A7601B56_terseLabel_en-US" xlink:label="lab_us-gaap_ServiceMember_DCDB3F2AE97EF9BA1F427536A7601B56" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Services</link:label>
    <link:label id="lab_us-gaap_ServiceMember_DCDB3F2AE97EF9BA1F427536A7601B56_label_en-US" xlink:label="lab_us-gaap_ServiceMember_DCDB3F2AE97EF9BA1F427536A7601B56" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Service [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ServiceMember" xlink:label="loc_us-gaap_ServiceMember_DCDB3F2AE97EF9BA1F427536A7601B56" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ServiceMember_DCDB3F2AE97EF9BA1F427536A7601B56" xlink:to="lab_us-gaap_ServiceMember_DCDB3F2AE97EF9BA1F427536A7601B56" xlink:type="arc" />
    <link:label id="lab_us-gaap_StatementLineItems_922E28A5EF919B0E13777536A760A360_terseLabel_en-US" xlink:label="lab_us-gaap_StatementLineItems_922E28A5EF919B0E13777536A760A360" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Statement [Line Items]</link:label>
    <link:label id="lab_us-gaap_StatementLineItems_922E28A5EF919B0E13777536A760A360_label_en-US" xlink:label="lab_us-gaap_StatementLineItems_922E28A5EF919B0E13777536A760A360" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_922E28A5EF919B0E13777536A760A360" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementLineItems_922E28A5EF919B0E13777536A760A360" xlink:to="lab_us-gaap_StatementLineItems_922E28A5EF919B0E13777536A760A360" xlink:type="arc" />
    <link:label id="lab_us-gaap_RevenuesAbstract_32250F38D4D0E00F30737536A760965E_terseLabel_en-US" xlink:label="lab_us-gaap_RevenuesAbstract_32250F38D4D0E00F30737536A760965E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net sales:</link:label>
    <link:label id="lab_us-gaap_RevenuesAbstract_32250F38D4D0E00F30737536A760965E_label_en-US" xlink:label="lab_us-gaap_RevenuesAbstract_32250F38D4D0E00F30737536A760965E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenues [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevenuesAbstract" xlink:label="loc_us-gaap_RevenuesAbstract_32250F38D4D0E00F30737536A760965E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RevenuesAbstract_32250F38D4D0E00F30737536A760965E" xlink:to="lab_us-gaap_RevenuesAbstract_32250F38D4D0E00F30737536A760965E" xlink:type="arc" />
    <link:label id="lab_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_2B42C42FBE5254B0F4BE7536A760E800_terseLabel_en-US" xlink:label="lab_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_2B42C42FBE5254B0F4BE7536A760E800" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total net sales</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_2B42C42FBE5254B0F4BE7536A760E800" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_2B42C42FBE5254B0F4BE7536A760E800" xlink:to="lab_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_2B42C42FBE5254B0F4BE7536A760E800" xlink:type="arc" />
    <link:label id="lab_us-gaap_CostOfGoodsAndServicesSoldAbstract_0BB91789274DD9B992547536A760CC61_terseLabel_en-US" xlink:label="lab_us-gaap_CostOfGoodsAndServicesSoldAbstract_0BB91789274DD9B992547536A760CC61" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cost of sales:</link:label>
    <link:label id="lab_us-gaap_CostOfGoodsAndServicesSoldAbstract_0BB91789274DD9B992547536A760CC61_label_en-US" xlink:label="lab_us-gaap_CostOfGoodsAndServicesSoldAbstract_0BB91789274DD9B992547536A760CC61" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cost of Goods and Services Sold [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CostOfGoodsAndServicesSoldAbstract" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSoldAbstract_0BB91789274DD9B992547536A760CC61" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CostOfGoodsAndServicesSoldAbstract_0BB91789274DD9B992547536A760CC61" xlink:to="lab_us-gaap_CostOfGoodsAndServicesSoldAbstract_0BB91789274DD9B992547536A760CC61" xlink:type="arc" />
    <link:label id="lab_us-gaap_CostOfGoodsAndServicesSold_6A9D3C59DC41CA9346527536A760AC5E_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_CostOfGoodsAndServicesSold_6A9D3C59DC41CA9346527536A760AC5E" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Total cost of sales</link:label>
    <link:label id="lab_us-gaap_CostOfGoodsAndServicesSold_6A9D3C59DC41CA9346527536A760AC5E_label_en-US" xlink:label="lab_us-gaap_CostOfGoodsAndServicesSold_6A9D3C59DC41CA9346527536A760AC5E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cost of Goods and Services Sold</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CostOfGoodsAndServicesSold" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSold_6A9D3C59DC41CA9346527536A760AC5E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CostOfGoodsAndServicesSold_6A9D3C59DC41CA9346527536A760AC5E" xlink:to="lab_us-gaap_CostOfGoodsAndServicesSold_6A9D3C59DC41CA9346527536A760AC5E" xlink:type="arc" />
    <link:label id="lab_us-gaap_GrossProfit_01FE8A3C025307335C107536A760D0B7_totalLabel_en-US" xlink:label="lab_us-gaap_GrossProfit_01FE8A3C025307335C107536A760D0B7" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Gross profit</link:label>
    <link:label id="lab_us-gaap_GrossProfit_01FE8A3C025307335C107536A760D0B7_label_en-US" xlink:label="lab_us-gaap_GrossProfit_01FE8A3C025307335C107536A760D0B7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Gross Profit</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GrossProfit" xlink:label="loc_us-gaap_GrossProfit_01FE8A3C025307335C107536A760D0B7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GrossProfit_01FE8A3C025307335C107536A760D0B7" xlink:to="lab_us-gaap_GrossProfit_01FE8A3C025307335C107536A760D0B7" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingExpensesAbstract_08C61576A7165EA332ED7536A76082BB_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingExpensesAbstract_08C61576A7165EA332ED7536A76082BB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Operating expenses:</link:label>
    <link:label id="lab_us-gaap_OperatingExpensesAbstract_08C61576A7165EA332ED7536A76082BB_label_en-US" xlink:label="lab_us-gaap_OperatingExpensesAbstract_08C61576A7165EA332ED7536A76082BB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Expenses [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingExpensesAbstract" xlink:label="loc_us-gaap_OperatingExpensesAbstract_08C61576A7165EA332ED7536A76082BB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingExpensesAbstract_08C61576A7165EA332ED7536A76082BB" xlink:to="lab_us-gaap_OperatingExpensesAbstract_08C61576A7165EA332ED7536A76082BB" xlink:type="arc" />
    <link:label id="lab_us-gaap_SellingGeneralAndAdministrativeExpense_DF04BE59A72F6AB854277536A7603605_negatedLabel_en-US" xlink:label="lab_us-gaap_SellingGeneralAndAdministrativeExpense_DF04BE59A72F6AB854277536A7603605" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Selling, general and administrative expenses</link:label>
    <link:label id="lab_us-gaap_SellingGeneralAndAdministrativeExpense_DF04BE59A72F6AB854277536A7603605_label_en-US" xlink:label="lab_us-gaap_SellingGeneralAndAdministrativeExpense_DF04BE59A72F6AB854277536A7603605" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Selling, General and Administrative Expense</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SellingGeneralAndAdministrativeExpense" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpense_DF04BE59A72F6AB854277536A7603605" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SellingGeneralAndAdministrativeExpense_DF04BE59A72F6AB854277536A7603605" xlink:to="lab_us-gaap_SellingGeneralAndAdministrativeExpense_DF04BE59A72F6AB854277536A7603605" xlink:type="arc" />
    <link:label id="lab_us-gaap_ResearchAndDevelopmentExpense_3B381A0C8F529C21C84E7536A760DE07_negatedLabel_en-US" xlink:label="lab_us-gaap_ResearchAndDevelopmentExpense_3B381A0C8F529C21C84E7536A760DE07" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Engineering expenses</link:label>
    <link:label id="lab_us-gaap_ResearchAndDevelopmentExpense_3B381A0C8F529C21C84E7536A760DE07_label_en-US" xlink:label="lab_us-gaap_ResearchAndDevelopmentExpense_3B381A0C8F529C21C84E7536A760DE07" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Research and Development Expense</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ResearchAndDevelopmentExpense" xlink:label="loc_us-gaap_ResearchAndDevelopmentExpense_3B381A0C8F529C21C84E7536A760DE07" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ResearchAndDevelopmentExpense_3B381A0C8F529C21C84E7536A760DE07" xlink:to="lab_us-gaap_ResearchAndDevelopmentExpense_3B381A0C8F529C21C84E7536A760DE07" xlink:type="arc" />
    <link:label id="lab_us-gaap_AmortizationOfIntangibleAssets_74C4D798B21969CE68B57536A760FF20_negatedLabel_en-US" xlink:label="lab_us-gaap_AmortizationOfIntangibleAssets_74C4D798B21969CE68B57536A760FF20" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Amortization expense</link:label>
    <link:label id="lab_us-gaap_AmortizationOfIntangibleAssets_74C4D798B21969CE68B57536A760FF20_label_en-US" xlink:label="lab_us-gaap_AmortizationOfIntangibleAssets_74C4D798B21969CE68B57536A760FF20" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Amortization of Intangible Assets</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AmortizationOfIntangibleAssets" xlink:label="loc_us-gaap_AmortizationOfIntangibleAssets_74C4D798B21969CE68B57536A760FF20" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AmortizationOfIntangibleAssets_74C4D798B21969CE68B57536A760FF20" xlink:to="lab_us-gaap_AmortizationOfIntangibleAssets_74C4D798B21969CE68B57536A760FF20" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingExpenses_23E0D6418F159CC0504D7536A7602D0B_negatedTotalLabel_en-US" xlink:label="lab_us-gaap_OperatingExpenses_23E0D6418F159CC0504D7536A7602D0B" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:type="resource" xml:lang="en-US">Total operating expenses</link:label>
    <link:label id="lab_us-gaap_OperatingExpenses_23E0D6418F159CC0504D7536A7602D0B_label_en-US" xlink:label="lab_us-gaap_OperatingExpenses_23E0D6418F159CC0504D7536A7602D0B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Expenses</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingExpenses" xlink:label="loc_us-gaap_OperatingExpenses_23E0D6418F159CC0504D7536A7602D0B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingExpenses_23E0D6418F159CC0504D7536A7602D0B" xlink:to="lab_us-gaap_OperatingExpenses_23E0D6418F159CC0504D7536A7602D0B" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingIncomeLoss_447F85C1BC891E1919237536A760A12A_totalLabel_en-US" xlink:label="lab_us-gaap_OperatingIncomeLoss_447F85C1BC891E1919237536A760A12A" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Income from operations</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="loc_us-gaap_OperatingIncomeLoss_447F85C1BC891E1919237536A760A12A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingIncomeLoss_447F85C1BC891E1919237536A760A12A" xlink:to="lab_us-gaap_OperatingIncomeLoss_447F85C1BC891E1919237536A760A12A" xlink:type="arc" />
    <link:label id="lab_us-gaap_NonoperatingIncomeExpenseAbstract_FC38462ACB9E030DB1657536A760FAD0_terseLabel_en-US" xlink:label="lab_us-gaap_NonoperatingIncomeExpenseAbstract_FC38462ACB9E030DB1657536A760FAD0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other income and expenses:</link:label>
    <link:label id="lab_us-gaap_NonoperatingIncomeExpenseAbstract_FC38462ACB9E030DB1657536A760FAD0_label_en-US" xlink:label="lab_us-gaap_NonoperatingIncomeExpenseAbstract_FC38462ACB9E030DB1657536A760FAD0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Nonoperating Income (Expense) [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NonoperatingIncomeExpenseAbstract" xlink:label="loc_us-gaap_NonoperatingIncomeExpenseAbstract_FC38462ACB9E030DB1657536A760FAD0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_FC38462ACB9E030DB1657536A760FAD0" xlink:to="lab_us-gaap_NonoperatingIncomeExpenseAbstract_FC38462ACB9E030DB1657536A760FAD0" xlink:type="arc" />
    <link:label id="lab_us-gaap_InterestIncomeExpenseNet_21DB30BE327E5D37CC9C7536A760EE44_terseLabel_en-US" xlink:label="lab_us-gaap_InterestIncomeExpenseNet_21DB30BE327E5D37CC9C7536A760EE44" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Interest expense, net</link:label>
    <link:label id="lab_us-gaap_InterestIncomeExpenseNet_21DB30BE327E5D37CC9C7536A760EE44_label_en-US" xlink:label="lab_us-gaap_InterestIncomeExpenseNet_21DB30BE327E5D37CC9C7536A760EE44" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interest Income (Expense), Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InterestIncomeExpenseNet" xlink:label="loc_us-gaap_InterestIncomeExpenseNet_21DB30BE327E5D37CC9C7536A760EE44" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InterestIncomeExpenseNet_21DB30BE327E5D37CC9C7536A760EE44" xlink:to="lab_us-gaap_InterestIncomeExpenseNet_21DB30BE327E5D37CC9C7536A760EE44" xlink:type="arc" />
    <link:label id="lab_us-gaap_NonoperatingIncomeExpense_18AF46FCBFFCF8D6D80D7536A76062B0_terseLabel_en-US" xlink:label="lab_us-gaap_NonoperatingIncomeExpense_18AF46FCBFFCF8D6D80D7536A76062B0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other (expense) income, net</link:label>
    <link:label id="lab_us-gaap_NonoperatingIncomeExpense_18AF46FCBFFCF8D6D80D7536A76062B0_label_en-US" xlink:label="lab_us-gaap_NonoperatingIncomeExpense_18AF46FCBFFCF8D6D80D7536A76062B0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Nonoperating Income (Expense)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NonoperatingIncomeExpense" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_18AF46FCBFFCF8D6D80D7536A76062B0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_18AF46FCBFFCF8D6D80D7536A76062B0" xlink:to="lab_us-gaap_NonoperatingIncomeExpense_18AF46FCBFFCF8D6D80D7536A76062B0" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncomeTaxExpenseBenefit_88832757D13237A1CB6E7536A760D440_negatedLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxExpenseBenefit_88832757D13237A1CB6E7536A760D440" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Income tax expense</link:label>
    <link:label id="lab_us-gaap_IncomeTaxExpenseBenefit_88832757D13237A1CB6E7536A760D440_label_en-US" xlink:label="lab_us-gaap_IncomeTaxExpenseBenefit_88832757D13237A1CB6E7536A760D440" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Tax Expense (Benefit)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_88832757D13237A1CB6E7536A760D440" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_88832757D13237A1CB6E7536A760D440" xlink:to="lab_us-gaap_IncomeTaxExpenseBenefit_88832757D13237A1CB6E7536A760D440" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProfitLoss_6BCA4CFFD311BEC822E87536A760E980_totalLabel_en-US" xlink:label="lab_us-gaap_ProfitLoss_6BCA4CFFD311BEC822E87536A760E980" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net (loss) income</link:label>
    <link:label id="lab_us-gaap_ProfitLoss_6BCA4CFFD311BEC822E87536A760E980_label_en-US" xlink:label="lab_us-gaap_ProfitLoss_6BCA4CFFD311BEC822E87536A760E980" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Income (Loss), Including Portion Attributable to Noncontrolling Interest</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProfitLoss" xlink:label="loc_us-gaap_ProfitLoss_6BCA4CFFD311BEC822E87536A760E980" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProfitLoss_6BCA4CFFD311BEC822E87536A760E980" xlink:to="lab_us-gaap_ProfitLoss_6BCA4CFFD311BEC822E87536A760E980" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_6B21F762693F7414CAAA7536A7609CEA_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_6B21F762693F7414CAAA7536A7609CEA" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Less: Net (gain) loss attributable to noncontrolling interest</link:label>
    <link:label id="lab_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_6B21F762693F7414CAAA7536A7609CEA_label_en-US" xlink:label="lab_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_6B21F762693F7414CAAA7536A7609CEA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Income (Loss) Attributable to Noncontrolling Interest</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetIncomeLossAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_6B21F762693F7414CAAA7536A7609CEA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_6B21F762693F7414CAAA7536A7609CEA" xlink:to="lab_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_6B21F762693F7414CAAA7536A7609CEA" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetIncomeLoss_BBEE0D0A6E88E4362E377536A7603F7A_totalLabel_en-US" xlink:label="lab_us-gaap_NetIncomeLoss_BBEE0D0A6E88E4362E377536A7603F7A" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net (loss) income attributable to Wabtec shareholders</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_BBEE0D0A6E88E4362E377536A7603F7A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetIncomeLoss_BBEE0D0A6E88E4362E377536A7603F7A" xlink:to="lab_us-gaap_NetIncomeLoss_BBEE0D0A6E88E4362E377536A7603F7A" xlink:type="arc" />
    <link:label id="lab_us-gaap_EarningsPerShareBasicAndDilutedAbstract_F821DE68E33006B7F2397536A760F52A_terseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareBasicAndDilutedAbstract_F821DE68E33006B7F2397536A760F52A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Earnings Per Common Share</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerShareBasicAndDilutedAbstract" xlink:label="loc_us-gaap_EarningsPerShareBasicAndDilutedAbstract_F821DE68E33006B7F2397536A760F52A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EarningsPerShareBasicAndDilutedAbstract_F821DE68E33006B7F2397536A760F52A" xlink:to="lab_us-gaap_EarningsPerShareBasicAndDilutedAbstract_F821DE68E33006B7F2397536A760F52A" xlink:type="arc" />
    <link:label id="lab_us-gaap_EarningsPerShareBasicAbstract_7A5614843AF0192FBDA37536A76040EC_terseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareBasicAbstract_7A5614843AF0192FBDA37536A76040EC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Basic</link:label>
    <link:label id="lab_us-gaap_EarningsPerShareBasicAbstract_7A5614843AF0192FBDA37536A76040EC_label_en-US" xlink:label="lab_us-gaap_EarningsPerShareBasicAbstract_7A5614843AF0192FBDA37536A76040EC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Earnings Per Share, Basic [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerShareBasicAbstract" xlink:label="loc_us-gaap_EarningsPerShareBasicAbstract_7A5614843AF0192FBDA37536A76040EC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EarningsPerShareBasicAbstract_7A5614843AF0192FBDA37536A76040EC" xlink:to="lab_us-gaap_EarningsPerShareBasicAbstract_7A5614843AF0192FBDA37536A76040EC" xlink:type="arc" />
    <link:label id="lab_us-gaap_EarningsPerShareBasic_14D41FDD1D7B8513B27F7536A7601F29_terseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareBasic_14D41FDD1D7B8513B27F7536A7601F29" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net income attributable to Wabtec shareholders (in dollars per share)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerShareBasic" xlink:label="loc_us-gaap_EarningsPerShareBasic_14D41FDD1D7B8513B27F7536A7601F29" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EarningsPerShareBasic_14D41FDD1D7B8513B27F7536A7601F29" xlink:to="lab_us-gaap_EarningsPerShareBasic_14D41FDD1D7B8513B27F7536A7601F29" xlink:type="arc" />
    <link:label id="lab_us-gaap_EarningsPerShareDilutedAbstract_F036290A5DF958F56DB97536A760A495_terseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareDilutedAbstract_F036290A5DF958F56DB97536A760A495" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Diluted</link:label>
    <link:label id="lab_us-gaap_EarningsPerShareDilutedAbstract_F036290A5DF958F56DB97536A760A495_label_en-US" xlink:label="lab_us-gaap_EarningsPerShareDilutedAbstract_F036290A5DF958F56DB97536A760A495" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Earnings Per Share, Diluted [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerShareDilutedAbstract" xlink:label="loc_us-gaap_EarningsPerShareDilutedAbstract_F036290A5DF958F56DB97536A760A495" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EarningsPerShareDilutedAbstract_F036290A5DF958F56DB97536A760A495" xlink:to="lab_us-gaap_EarningsPerShareDilutedAbstract_F036290A5DF958F56DB97536A760A495" xlink:type="arc" />
    <link:label id="lab_us-gaap_EarningsPerShareDiluted_3BAC69042FD6A78716C67536A7607F31_terseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareDiluted_3BAC69042FD6A78716C67536A7607F31" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net income attributable to Wabtec shareholders (in dollars per share)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerShareDiluted" xlink:label="loc_us-gaap_EarningsPerShareDiluted_3BAC69042FD6A78716C67536A7607F31" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EarningsPerShareDiluted_3BAC69042FD6A78716C67536A7607F31" xlink:to="lab_us-gaap_EarningsPerShareDiluted_3BAC69042FD6A78716C67536A7607F31" xlink:type="arc" />
    <link:label id="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_D43134D26BC86D093E417536A760F6E8_terseLabel_en-US" xlink:label="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_D43134D26BC86D093E417536A760F6E8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Weighted average shares outstanding</link:label>
    <link:label id="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_D43134D26BC86D093E417536A760F6E8_label_en-US" xlink:label="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_D43134D26BC86D093E417536A760F6E8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Weighted Average Number of Shares Outstanding, Diluted [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_D43134D26BC86D093E417536A760F6E8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_D43134D26BC86D093E417536A760F6E8" xlink:to="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_D43134D26BC86D093E417536A760F6E8" xlink:type="arc" />
    <link:label id="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_E6DFE48193FB81DDFB9E7536A760D0B3_terseLabel_en-US" xlink:label="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_E6DFE48193FB81DDFB9E7536A760D0B3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Basic (in shares)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_E6DFE48193FB81DDFB9E7536A760D0B3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_E6DFE48193FB81DDFB9E7536A760D0B3" xlink:to="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_E6DFE48193FB81DDFB9E7536A760D0B3" xlink:type="arc" />
    <link:label id="lab_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_B0208852F82CEA9447697536A76046DE_terseLabel_en-US" xlink:label="lab_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_B0208852F82CEA9447697536A76046DE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Diluted (in shares)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_B0208852F82CEA9447697536A76046DE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_B0208852F82CEA9447697536A76046DE" xlink:to="lab_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_B0208852F82CEA9447697536A76046DE" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccountingPoliciesAbstract_EB519E9B307E210C9EF28DA5A46A38D7_label_en-US" xlink:label="lab_us-gaap_AccountingPoliciesAbstract_EB519E9B307E210C9EF28DA5A46A38D7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accounting Policies [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountingPoliciesAbstract" xlink:label="loc_us-gaap_AccountingPoliciesAbstract_EB519E9B307E210C9EF28DA5A46A38D7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_EB519E9B307E210C9EF28DA5A46A38D7" xlink:to="lab_us-gaap_AccountingPoliciesAbstract_EB519E9B307E210C9EF28DA5A46A38D7" xlink:type="arc" />
    <link:label id="lab_us-gaap_BasisOfAccountingPolicyPolicyTextBlock_D41B87B6486664F58D468DA5A46AC4AC_terseLabel_en-US" xlink:label="lab_us-gaap_BasisOfAccountingPolicyPolicyTextBlock_D41B87B6486664F58D468DA5A46AC4AC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Basis of Presentation</link:label>
    <link:label id="lab_us-gaap_BasisOfAccountingPolicyPolicyTextBlock_D41B87B6486664F58D468DA5A46AC4AC_label_en-US" xlink:label="lab_us-gaap_BasisOfAccountingPolicyPolicyTextBlock_D41B87B6486664F58D468DA5A46AC4AC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Basis of Accounting, Policy [Policy Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BasisOfAccountingPolicyPolicyTextBlock" xlink:label="loc_us-gaap_BasisOfAccountingPolicyPolicyTextBlock_D41B87B6486664F58D468DA5A46AC4AC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BasisOfAccountingPolicyPolicyTextBlock_D41B87B6486664F58D468DA5A46AC4AC" xlink:to="lab_us-gaap_BasisOfAccountingPolicyPolicyTextBlock_D41B87B6486664F58D468DA5A46AC4AC" xlink:type="arc" />
    <link:label id="lab_us-gaap_RevenueFromContractWithCustomerPolicyTextBlock_1C90E4DF1F0F96B040E08DA5A46A0F0F_terseLabel_en-US" xlink:label="lab_us-gaap_RevenueFromContractWithCustomerPolicyTextBlock_1C90E4DF1F0F96B040E08DA5A46A0F0F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Revenue Recognition</link:label>
    <link:label id="lab_us-gaap_RevenueFromContractWithCustomerPolicyTextBlock_1C90E4DF1F0F96B040E08DA5A46A0F0F_label_en-US" xlink:label="lab_us-gaap_RevenueFromContractWithCustomerPolicyTextBlock_1C90E4DF1F0F96B040E08DA5A46A0F0F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenue from Contract with Customer [Policy Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevenueFromContractWithCustomerPolicyTextBlock" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerPolicyTextBlock_1C90E4DF1F0F96B040E08DA5A46A0F0F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RevenueFromContractWithCustomerPolicyTextBlock_1C90E4DF1F0F96B040E08DA5A46A0F0F" xlink:to="lab_us-gaap_RevenueFromContractWithCustomerPolicyTextBlock_1C90E4DF1F0F96B040E08DA5A46A0F0F" xlink:type="arc" />
    <link:label id="lab_us-gaap_PriorPeriodReclassificationAdjustmentDescription_8F186D326406F99D57278DA5A46ADE35_terseLabel_en-US" xlink:label="lab_us-gaap_PriorPeriodReclassificationAdjustmentDescription_8F186D326406F99D57278DA5A46ADE35" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Reclassifications</link:label>
    <link:label id="lab_us-gaap_PriorPeriodReclassificationAdjustmentDescription_8F186D326406F99D57278DA5A46ADE35_label_en-US" xlink:label="lab_us-gaap_PriorPeriodReclassificationAdjustmentDescription_8F186D326406F99D57278DA5A46ADE35" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Reclassification, Policy [Policy Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PriorPeriodReclassificationAdjustmentDescription" xlink:label="loc_us-gaap_PriorPeriodReclassificationAdjustmentDescription_8F186D326406F99D57278DA5A46ADE35" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PriorPeriodReclassificationAdjustmentDescription_8F186D326406F99D57278DA5A46ADE35" xlink:to="lab_us-gaap_PriorPeriodReclassificationAdjustmentDescription_8F186D326406F99D57278DA5A46ADE35" xlink:type="arc" />
    <link:label id="lab_us-gaap_UseOfEstimates_9ED3C88CA183B323184A8DA5A46A4D1C_terseLabel_en-US" xlink:label="lab_us-gaap_UseOfEstimates_9ED3C88CA183B323184A8DA5A46A4D1C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Use of Estimates</link:label>
    <link:label id="lab_us-gaap_UseOfEstimates_9ED3C88CA183B323184A8DA5A46A4D1C_label_en-US" xlink:label="lab_us-gaap_UseOfEstimates_9ED3C88CA183B323184A8DA5A46A4D1C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Use of Estimates, Policy [Policy Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UseOfEstimates" xlink:label="loc_us-gaap_UseOfEstimates_9ED3C88CA183B323184A8DA5A46A4D1C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_UseOfEstimates_9ED3C88CA183B323184A8DA5A46A4D1C" xlink:to="lab_us-gaap_UseOfEstimates_9ED3C88CA183B323184A8DA5A46A4D1C" xlink:type="arc" />
    <link:label id="lab_us-gaap_DerivativesPolicyTextBlock_0E7B2BA233A561800C6B8DA5A46BAA1D_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativesPolicyTextBlock_0E7B2BA233A561800C6B8DA5A46BAA1D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financial Derivatives and Hedging Activities</link:label>
    <link:label id="lab_us-gaap_DerivativesPolicyTextBlock_0E7B2BA233A561800C6B8DA5A46BAA1D_label_en-US" xlink:label="lab_us-gaap_DerivativesPolicyTextBlock_0E7B2BA233A561800C6B8DA5A46BAA1D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivatives, Policy [Policy Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativesPolicyTextBlock" xlink:label="loc_us-gaap_DerivativesPolicyTextBlock_0E7B2BA233A561800C6B8DA5A46BAA1D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativesPolicyTextBlock_0E7B2BA233A561800C6B8DA5A46BAA1D" xlink:to="lab_us-gaap_DerivativesPolicyTextBlock_0E7B2BA233A561800C6B8DA5A46BAA1D" xlink:type="arc" />
    <link:label id="lab_us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock_ED3980AA8C275F3F4D8F8DA5A46BDC92_terseLabel_en-US" xlink:label="lab_us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock_ED3980AA8C275F3F4D8F8DA5A46BDC92" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Foreign Currency Translation</link:label>
    <link:label id="lab_us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock_ED3980AA8C275F3F4D8F8DA5A46BDC92_label_en-US" xlink:label="lab_us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock_ED3980AA8C275F3F4D8F8DA5A46BDC92" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Foreign Currency Transactions and Translations Policy [Policy Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock" xlink:label="loc_us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock_ED3980AA8C275F3F4D8F8DA5A46BDC92" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock_ED3980AA8C275F3F4D8F8DA5A46BDC92" xlink:to="lab_us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock_ED3980AA8C275F3F4D8F8DA5A46BDC92" xlink:type="arc" />
    <link:label id="lab_wab_NoncontrollingInterestPolicyPolicyTextBlock_EDCC2A9BF3FFCFDE3FC58DA5A46B7952_terseLabel_en-US" xlink:label="lab_wab_NoncontrollingInterestPolicyPolicyTextBlock_EDCC2A9BF3FFCFDE3FC58DA5A46B7952" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Noncontrolling Interests</link:label>
    <link:label id="lab_wab_NoncontrollingInterestPolicyPolicyTextBlock_EDCC2A9BF3FFCFDE3FC58DA5A46B7952_label_en-US" xlink:label="lab_wab_NoncontrollingInterestPolicyPolicyTextBlock_EDCC2A9BF3FFCFDE3FC58DA5A46B7952" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Noncontrolling Interest, Policy [Policy Text Block]</link:label>
    <link:label id="lab_wab_NoncontrollingInterestPolicyPolicyTextBlock_EDCC2A9BF3FFCFDE3FC58DA5A46B7952_documentation_en-US" xlink:label="lab_wab_NoncontrollingInterestPolicyPolicyTextBlock_EDCC2A9BF3FFCFDE3FC58DA5A46B7952" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Noncontrolling Interest, Policy [Policy Text Block]</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_NoncontrollingInterestPolicyPolicyTextBlock" xlink:label="loc_wab_NoncontrollingInterestPolicyPolicyTextBlock_EDCC2A9BF3FFCFDE3FC58DA5A46B7952" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_NoncontrollingInterestPolicyPolicyTextBlock_EDCC2A9BF3FFCFDE3FC58DA5A46B7952" xlink:to="lab_wab_NoncontrollingInterestPolicyPolicyTextBlock_EDCC2A9BF3FFCFDE3FC58DA5A46B7952" xlink:type="arc" />
    <link:label id="lab_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_9B74E6E2F32A1B0D4F118DA5A46BA179_terseLabel_en-US" xlink:label="lab_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_9B74E6E2F32A1B0D4F118DA5A46BA179" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Recently Issued Accounting Pronouncements</link:label>
    <link:label id="lab_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_9B74E6E2F32A1B0D4F118DA5A46BA179_label_en-US" xlink:label="lab_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_9B74E6E2F32A1B0D4F118DA5A46BA179" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">New Accounting Pronouncements, Policy [Policy Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock" xlink:label="loc_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_9B74E6E2F32A1B0D4F118DA5A46BA179" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_9B74E6E2F32A1B0D4F118DA5A46BA179" xlink:to="lab_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_9B74E6E2F32A1B0D4F118DA5A46BA179" xlink:type="arc" />
    <link:label id="lab_us-gaap_ComprehensiveIncomePolicyPolicyTextBlock_6F4860C974E917EEC9258DA5A46B0558_terseLabel_en-US" xlink:label="lab_us-gaap_ComprehensiveIncomePolicyPolicyTextBlock_6F4860C974E917EEC9258DA5A46B0558" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other Comprehensive Income</link:label>
    <link:label id="lab_us-gaap_ComprehensiveIncomePolicyPolicyTextBlock_6F4860C974E917EEC9258DA5A46B0558_label_en-US" xlink:label="lab_us-gaap_ComprehensiveIncomePolicyPolicyTextBlock_6F4860C974E917EEC9258DA5A46B0558" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Comprehensive Income, Policy [Policy Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ComprehensiveIncomePolicyPolicyTextBlock" xlink:label="loc_us-gaap_ComprehensiveIncomePolicyPolicyTextBlock_6F4860C974E917EEC9258DA5A46B0558" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ComprehensiveIncomePolicyPolicyTextBlock_6F4860C974E917EEC9258DA5A46B0558" xlink:to="lab_us-gaap_ComprehensiveIncomePolicyPolicyTextBlock_6F4860C974E917EEC9258DA5A46B0558" xlink:type="arc" />
    <link:label id="lab_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_AEC1AECDFD255381EF82E55EDCB76CAC_label_en-US" xlink:label="lab_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_AEC1AECDFD255381EF82E55EDCB76CAC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Organization, Consolidation and Presentation of Financial Statements [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:label="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_AEC1AECDFD255381EF82E55EDCB76CAC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_AEC1AECDFD255381EF82E55EDCB76CAC" xlink:to="lab_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_AEC1AECDFD255381EF82E55EDCB76CAC" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfProductInformationTable_9B2CEC33B8A74AEA9F6FE55EDCB7C8FD_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfProductInformationTable_9B2CEC33B8A74AEA9F6FE55EDCB7C8FD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule Of Product Information [Table]</link:label>
    <link:label id="lab_us-gaap_ScheduleOfProductInformationTable_9B2CEC33B8A74AEA9F6FE55EDCB7C8FD_label_en-US" xlink:label="lab_us-gaap_ScheduleOfProductInformationTable_9B2CEC33B8A74AEA9F6FE55EDCB7C8FD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Product Information [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfProductInformationTable" xlink:label="loc_us-gaap_ScheduleOfProductInformationTable_9B2CEC33B8A74AEA9F6FE55EDCB7C8FD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfProductInformationTable_9B2CEC33B8A74AEA9F6FE55EDCB7C8FD" xlink:to="lab_us-gaap_ScheduleOfProductInformationTable_9B2CEC33B8A74AEA9F6FE55EDCB7C8FD" xlink:type="arc" />
    <link:label id="lab_us-gaap_ConcentrationRiskByBenchmarkAxis_DBF3054463D91BB8D271E55EDCB83EF1_terseLabel_en-US" xlink:label="lab_us-gaap_ConcentrationRiskByBenchmarkAxis_DBF3054463D91BB8D271E55EDCB83EF1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Concentration Risk By Benchmark</link:label>
    <link:label id="lab_us-gaap_ConcentrationRiskByBenchmarkAxis_DBF3054463D91BB8D271E55EDCB83EF1_label_en-US" xlink:label="lab_us-gaap_ConcentrationRiskByBenchmarkAxis_DBF3054463D91BB8D271E55EDCB83EF1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Concentration Risk Benchmark [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ConcentrationRiskByBenchmarkAxis" xlink:label="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_DBF3054463D91BB8D271E55EDCB83EF1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_DBF3054463D91BB8D271E55EDCB83EF1" xlink:to="lab_us-gaap_ConcentrationRiskByBenchmarkAxis_DBF3054463D91BB8D271E55EDCB83EF1" xlink:type="arc" />
    <link:label id="lab_us-gaap_ConcentrationRiskBenchmarkDomain_510E608F89BFAE805A05E55EDCB9F583_terseLabel_en-US" xlink:label="lab_us-gaap_ConcentrationRiskBenchmarkDomain_510E608F89BFAE805A05E55EDCB9F583" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Concentration Risk Benchmark</link:label>
    <link:label id="lab_us-gaap_ConcentrationRiskBenchmarkDomain_510E608F89BFAE805A05E55EDCB9F583_label_en-US" xlink:label="lab_us-gaap_ConcentrationRiskBenchmarkDomain_510E608F89BFAE805A05E55EDCB9F583" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Concentration Risk Benchmark [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ConcentrationRiskBenchmarkDomain" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_510E608F89BFAE805A05E55EDCB9F583" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConcentrationRiskBenchmarkDomain_510E608F89BFAE805A05E55EDCB9F583" xlink:to="lab_us-gaap_ConcentrationRiskBenchmarkDomain_510E608F89BFAE805A05E55EDCB9F583" xlink:type="arc" />
    <link:label id="lab_us-gaap_SalesRevenueNetMember_9FD605EC7EF06853AD2BE55EDCB91385_terseLabel_en-US" xlink:label="lab_us-gaap_SalesRevenueNetMember_9FD605EC7EF06853AD2BE55EDCB91385" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Sales Revenue Outside United States</link:label>
    <link:label id="lab_us-gaap_SalesRevenueNetMember_9FD605EC7EF06853AD2BE55EDCB91385_label_en-US" xlink:label="lab_us-gaap_SalesRevenueNetMember_9FD605EC7EF06853AD2BE55EDCB91385" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Sales Revenue, Net [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SalesRevenueNetMember" xlink:label="loc_us-gaap_SalesRevenueNetMember_9FD605EC7EF06853AD2BE55EDCB91385" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SalesRevenueNetMember_9FD605EC7EF06853AD2BE55EDCB91385" xlink:to="lab_us-gaap_SalesRevenueNetMember_9FD605EC7EF06853AD2BE55EDCB91385" xlink:type="arc" />
    <link:label id="lab_us-gaap_ConcentrationRiskByTypeAxis_93F64CDDB65BE124D099E55EDCB95507_terseLabel_en-US" xlink:label="lab_us-gaap_ConcentrationRiskByTypeAxis_93F64CDDB65BE124D099E55EDCB95507" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Concentration Risk By Type</link:label>
    <link:label id="lab_us-gaap_ConcentrationRiskByTypeAxis_93F64CDDB65BE124D099E55EDCB95507_label_en-US" xlink:label="lab_us-gaap_ConcentrationRiskByTypeAxis_93F64CDDB65BE124D099E55EDCB95507" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Concentration Risk Type [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ConcentrationRiskByTypeAxis" xlink:label="loc_us-gaap_ConcentrationRiskByTypeAxis_93F64CDDB65BE124D099E55EDCB95507" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis_93F64CDDB65BE124D099E55EDCB95507" xlink:to="lab_us-gaap_ConcentrationRiskByTypeAxis_93F64CDDB65BE124D099E55EDCB95507" xlink:type="arc" />
    <link:label id="lab_us-gaap_ConcentrationRiskTypeDomain_57041ED145FC1623AA37E55EDCB998AA_terseLabel_en-US" xlink:label="lab_us-gaap_ConcentrationRiskTypeDomain_57041ED145FC1623AA37E55EDCB998AA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Concentration Risk Type</link:label>
    <link:label id="lab_us-gaap_ConcentrationRiskTypeDomain_57041ED145FC1623AA37E55EDCB998AA_label_en-US" xlink:label="lab_us-gaap_ConcentrationRiskTypeDomain_57041ED145FC1623AA37E55EDCB998AA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Concentration Risk Type [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ConcentrationRiskTypeDomain" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_57041ED145FC1623AA37E55EDCB998AA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConcentrationRiskTypeDomain_57041ED145FC1623AA37E55EDCB998AA" xlink:to="lab_us-gaap_ConcentrationRiskTypeDomain_57041ED145FC1623AA37E55EDCB998AA" xlink:type="arc" />
    <link:label id="lab_us-gaap_GeographicConcentrationRiskMember_97B4E23AB74FFF170BCEE55EDCBA031E_terseLabel_en-US" xlink:label="lab_us-gaap_GeographicConcentrationRiskMember_97B4E23AB74FFF170BCEE55EDCBA031E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Geographic Concentration Risk</link:label>
    <link:label id="lab_us-gaap_GeographicConcentrationRiskMember_97B4E23AB74FFF170BCEE55EDCBA031E_label_en-US" xlink:label="lab_us-gaap_GeographicConcentrationRiskMember_97B4E23AB74FFF170BCEE55EDCBA031E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Geographic Concentration Risk [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GeographicConcentrationRiskMember" xlink:label="loc_us-gaap_GeographicConcentrationRiskMember_97B4E23AB74FFF170BCEE55EDCBA031E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GeographicConcentrationRiskMember_97B4E23AB74FFF170BCEE55EDCBA031E" xlink:to="lab_us-gaap_GeographicConcentrationRiskMember_97B4E23AB74FFF170BCEE55EDCBA031E" xlink:type="arc" />
    <link:label id="lab_srt_StatementGeographicalAxis_C6B4BCE3E789F435B973E55EDCBA039A_terseLabel_en-US" xlink:label="lab_srt_StatementGeographicalAxis_C6B4BCE3E789F435B973E55EDCBA039A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Geographical [Axis]</link:label>
    <link:label id="lab_srt_StatementGeographicalAxis_C6B4BCE3E789F435B973E55EDCBA039A_label_en-US" xlink:label="lab_srt_StatementGeographicalAxis_C6B4BCE3E789F435B973E55EDCBA039A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Geographical [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_StatementGeographicalAxis" xlink:label="loc_srt_StatementGeographicalAxis_C6B4BCE3E789F435B973E55EDCBA039A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_StatementGeographicalAxis_C6B4BCE3E789F435B973E55EDCBA039A" xlink:to="lab_srt_StatementGeographicalAxis_C6B4BCE3E789F435B973E55EDCBA039A" xlink:type="arc" />
    <link:label id="lab_srt_SegmentGeographicalDomain_26A621A3087BA219897BE55EDCBAD273_terseLabel_en-US" xlink:label="lab_srt_SegmentGeographicalDomain_26A621A3087BA219897BE55EDCBAD273" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Geographical [Domain]</link:label>
    <link:label id="lab_srt_SegmentGeographicalDomain_26A621A3087BA219897BE55EDCBAD273_label_en-US" xlink:label="lab_srt_SegmentGeographicalDomain_26A621A3087BA219897BE55EDCBAD273" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Geographical [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="loc_srt_SegmentGeographicalDomain_26A621A3087BA219897BE55EDCBAD273" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_SegmentGeographicalDomain_26A621A3087BA219897BE55EDCBAD273" xlink:to="lab_srt_SegmentGeographicalDomain_26A621A3087BA219897BE55EDCBAD273" xlink:type="arc" />
    <link:label id="lab_us-gaap_NonUsMember_A30D01E47C5243D279C4E55EDCBA1955_terseLabel_en-US" xlink:label="lab_us-gaap_NonUsMember_A30D01E47C5243D279C4E55EDCBA1955" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Non-US</link:label>
    <link:label id="lab_us-gaap_NonUsMember_A30D01E47C5243D279C4E55EDCBA1955_label_en-US" xlink:label="lab_us-gaap_NonUsMember_A30D01E47C5243D279C4E55EDCBA1955" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Non-US [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NonUsMember" xlink:label="loc_us-gaap_NonUsMember_A30D01E47C5243D279C4E55EDCBA1955" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NonUsMember_A30D01E47C5243D279C4E55EDCBA1955" xlink:to="lab_us-gaap_NonUsMember_A30D01E47C5243D279C4E55EDCBA1955" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProductInformationLineItems_D6EE0353F1157617495AE55EDCBB828A_terseLabel_en-US" xlink:label="lab_us-gaap_ProductInformationLineItems_D6EE0353F1157617495AE55EDCBB828A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Product Information [Line Items]</link:label>
    <link:label id="lab_us-gaap_ProductInformationLineItems_D6EE0353F1157617495AE55EDCBB828A_label_en-US" xlink:label="lab_us-gaap_ProductInformationLineItems_D6EE0353F1157617495AE55EDCBB828A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Product Information [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProductInformationLineItems" xlink:label="loc_us-gaap_ProductInformationLineItems_D6EE0353F1157617495AE55EDCBB828A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProductInformationLineItems_D6EE0353F1157617495AE55EDCBB828A" xlink:to="lab_us-gaap_ProductInformationLineItems_D6EE0353F1157617495AE55EDCBB828A" xlink:type="arc" />
    <link:label id="lab_wab_NumberOfCountriesWhereProductFound_882437B770A7D72041AFE55EDCBB4261_terseLabel_en-US" xlink:label="lab_wab_NumberOfCountriesWhereProductFound_882437B770A7D72041AFE55EDCBB4261" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of countries where product is found (more than)</link:label>
    <link:label id="lab_wab_NumberOfCountriesWhereProductFound_882437B770A7D72041AFE55EDCBB4261_label_en-US" xlink:label="lab_wab_NumberOfCountriesWhereProductFound_882437B770A7D72041AFE55EDCBB4261" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number Of Countries Where Product Found</link:label>
    <link:label id="lab_wab_NumberOfCountriesWhereProductFound_882437B770A7D72041AFE55EDCBB4261_documentation_en-US" xlink:label="lab_wab_NumberOfCountriesWhereProductFound_882437B770A7D72041AFE55EDCBB4261" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Number of countries where product found.</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_NumberOfCountriesWhereProductFound" xlink:label="loc_wab_NumberOfCountriesWhereProductFound_882437B770A7D72041AFE55EDCBB4261" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_NumberOfCountriesWhereProductFound_882437B770A7D72041AFE55EDCBB4261" xlink:to="lab_wab_NumberOfCountriesWhereProductFound_882437B770A7D72041AFE55EDCBB4261" xlink:type="arc" />
    <link:label id="lab_us-gaap_NumberOfCountriesInWhichEntityOperates_BFC6FB39777EBB9B22E8E55EDCBB07EE_terseLabel_en-US" xlink:label="lab_us-gaap_NumberOfCountriesInWhichEntityOperates_BFC6FB39777EBB9B22E8E55EDCBB07EE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of countries company operates</link:label>
    <link:label id="lab_us-gaap_NumberOfCountriesInWhichEntityOperates_BFC6FB39777EBB9B22E8E55EDCBB07EE_label_en-US" xlink:label="lab_us-gaap_NumberOfCountriesInWhichEntityOperates_BFC6FB39777EBB9B22E8E55EDCBB07EE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number of Countries in which Entity Operates</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NumberOfCountriesInWhichEntityOperates" xlink:label="loc_us-gaap_NumberOfCountriesInWhichEntityOperates_BFC6FB39777EBB9B22E8E55EDCBB07EE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NumberOfCountriesInWhichEntityOperates_BFC6FB39777EBB9B22E8E55EDCBB07EE" xlink:to="lab_us-gaap_NumberOfCountriesInWhichEntityOperates_BFC6FB39777EBB9B22E8E55EDCBB07EE" xlink:type="arc" />
    <link:label id="lab_us-gaap_ConcentrationRiskPercentage1_AB27F5AB88F8798778CAE55EDCBB9151_terseLabel_en-US" xlink:label="lab_us-gaap_ConcentrationRiskPercentage1_AB27F5AB88F8798778CAE55EDCBB9151" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Percent of revenue from customers outside the U.S. (as a percent)</link:label>
    <link:label id="lab_us-gaap_ConcentrationRiskPercentage1_AB27F5AB88F8798778CAE55EDCBB9151_label_en-US" xlink:label="lab_us-gaap_ConcentrationRiskPercentage1_AB27F5AB88F8798778CAE55EDCBB9151" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Concentration Risk, Percentage</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ConcentrationRiskPercentage1" xlink:label="loc_us-gaap_ConcentrationRiskPercentage1_AB27F5AB88F8798778CAE55EDCBB9151" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConcentrationRiskPercentage1_AB27F5AB88F8798778CAE55EDCBB9151" xlink:to="lab_us-gaap_ConcentrationRiskPercentage1_AB27F5AB88F8798778CAE55EDCBB9151" xlink:type="arc" />
    <link:label id="lab_wab_IntangibleAssetsDisclosureTable_1541AE7FB0823919921694AD92AA6DD7_terseLabel_en-US" xlink:label="lab_wab_IntangibleAssetsDisclosureTable_1541AE7FB0823919921694AD92AA6DD7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Intangible Assets Disclosure [Table]</link:label>
    <link:label id="lab_wab_IntangibleAssetsDisclosureTable_1541AE7FB0823919921694AD92AA6DD7_label_en-US" xlink:label="lab_wab_IntangibleAssetsDisclosureTable_1541AE7FB0823919921694AD92AA6DD7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Intangible Assets Disclosure [Table]</link:label>
    <link:label id="lab_wab_IntangibleAssetsDisclosureTable_1541AE7FB0823919921694AD92AA6DD7_documentation_en-US" xlink:label="lab_wab_IntangibleAssetsDisclosureTable_1541AE7FB0823919921694AD92AA6DD7" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Intangible assets disclosure.</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_IntangibleAssetsDisclosureTable" xlink:label="loc_wab_IntangibleAssetsDisclosureTable_1541AE7FB0823919921694AD92AA6DD7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_IntangibleAssetsDisclosureTable_1541AE7FB0823919921694AD92AA6DD7" xlink:to="lab_wab_IntangibleAssetsDisclosureTable_1541AE7FB0823919921694AD92AA6DD7" xlink:type="arc" />
    <link:label id="lab_us-gaap_TradeNamesMember_44E23BC1F9C955AA456794AD92AB958D_terseLabel_en-US" xlink:label="lab_us-gaap_TradeNamesMember_44E23BC1F9C955AA456794AD92AB958D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Trade Names</link:label>
    <link:label id="lab_us-gaap_TradeNamesMember_44E23BC1F9C955AA456794AD92AB958D_label_en-US" xlink:label="lab_us-gaap_TradeNamesMember_44E23BC1F9C955AA456794AD92AB958D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Trade Names [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TradeNamesMember" xlink:label="loc_us-gaap_TradeNamesMember_44E23BC1F9C955AA456794AD92AB958D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_TradeNamesMember_44E23BC1F9C955AA456794AD92AB958D" xlink:to="lab_us-gaap_TradeNamesMember_44E23BC1F9C955AA456794AD92AB958D" xlink:type="arc" />
    <link:label id="lab_us-gaap_IntellectualPropertyMember_8383084D12C86B4EA62594AD92AC4BEC_terseLabel_en-US" xlink:label="lab_us-gaap_IntellectualPropertyMember_8383084D12C86B4EA62594AD92AC4BEC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Patents</link:label>
    <link:label id="lab_us-gaap_IntellectualPropertyMember_8383084D12C86B4EA62594AD92AC4BEC_label_en-US" xlink:label="lab_us-gaap_IntellectualPropertyMember_8383084D12C86B4EA62594AD92AC4BEC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Intellectual Property [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IntellectualPropertyMember" xlink:label="loc_us-gaap_IntellectualPropertyMember_8383084D12C86B4EA62594AD92AC4BEC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IntellectualPropertyMember_8383084D12C86B4EA62594AD92AC4BEC" xlink:to="lab_us-gaap_IntellectualPropertyMember_8383084D12C86B4EA62594AD92AC4BEC" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherIntangibleAssetsMember_E969CA38EDF5F5FBA88394AD92AC3291_terseLabel_en-US" xlink:label="lab_us-gaap_OtherIntangibleAssetsMember_E969CA38EDF5F5FBA88394AD92AC3291" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other Intangibles</link:label>
    <link:label id="lab_us-gaap_OtherIntangibleAssetsMember_E969CA38EDF5F5FBA88394AD92AC3291_label_en-US" xlink:label="lab_us-gaap_OtherIntangibleAssetsMember_E969CA38EDF5F5FBA88394AD92AC3291" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Intangible Assets [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherIntangibleAssetsMember" xlink:label="loc_us-gaap_OtherIntangibleAssetsMember_E969CA38EDF5F5FBA88394AD92AC3291" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherIntangibleAssetsMember_E969CA38EDF5F5FBA88394AD92AC3291" xlink:to="lab_us-gaap_OtherIntangibleAssetsMember_E969CA38EDF5F5FBA88394AD92AC3291" xlink:type="arc" />
    <link:label id="lab_wab_IntangibleAssetsDisclosureLineItems_9EC07BDF187C52A81DC294AD92AC8853_terseLabel_en-US" xlink:label="lab_wab_IntangibleAssetsDisclosureLineItems_9EC07BDF187C52A81DC294AD92AC8853" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Intangible Assets Disclosure [Line Items]</link:label>
    <link:label id="lab_wab_IntangibleAssetsDisclosureLineItems_9EC07BDF187C52A81DC294AD92AC8853_label_en-US" xlink:label="lab_wab_IntangibleAssetsDisclosureLineItems_9EC07BDF187C52A81DC294AD92AC8853" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Intangible Assets Disclosure [Line Items]</link:label>
    <link:label id="lab_wab_IntangibleAssetsDisclosureLineItems_9EC07BDF187C52A81DC294AD92AC8853_documentation_en-US" xlink:label="lab_wab_IntangibleAssetsDisclosureLineItems_9EC07BDF187C52A81DC294AD92AC8853" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Intangible assets disclosure.</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_IntangibleAssetsDisclosureLineItems" xlink:label="loc_wab_IntangibleAssetsDisclosureLineItems_9EC07BDF187C52A81DC294AD92AC8853" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_IntangibleAssetsDisclosureLineItems_9EC07BDF187C52A81DC294AD92AC8853" xlink:to="lab_wab_IntangibleAssetsDisclosureLineItems_9EC07BDF187C52A81DC294AD92AC8853" xlink:type="arc" />
    <link:label id="lab_us-gaap_IndefiniteLivedTrademarks_2D177EF5B7A5645BE95D94AD92AC024A_terseLabel_en-US" xlink:label="lab_us-gaap_IndefiniteLivedTrademarks_2D177EF5B7A5645BE95D94AD92AC024A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Trade names</link:label>
    <link:label id="lab_us-gaap_IndefiniteLivedTrademarks_2D177EF5B7A5645BE95D94AD92AC024A_label_en-US" xlink:label="lab_us-gaap_IndefiniteLivedTrademarks_2D177EF5B7A5645BE95D94AD92AC024A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Indefinite-Lived Trademarks</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IndefiniteLivedTrademarks" xlink:label="loc_us-gaap_IndefiniteLivedTrademarks_2D177EF5B7A5645BE95D94AD92AC024A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IndefiniteLivedTrademarks_2D177EF5B7A5645BE95D94AD92AC024A" xlink:to="lab_us-gaap_IndefiniteLivedTrademarks_2D177EF5B7A5645BE95D94AD92AC024A" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetUsefulLife_8BDCDEED618A610AB05094AD92AD1875_verboseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetUsefulLife_8BDCDEED618A610AB05094AD92AD1875" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Trade names, useful life</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetUsefulLife_8BDCDEED618A610AB05094AD92AD1875_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetUsefulLife_8BDCDEED618A610AB05094AD92AD1875" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Asset, Useful Life</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetUsefulLife" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife_8BDCDEED618A610AB05094AD92AD1875" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife_8BDCDEED618A610AB05094AD92AD1875" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetUsefulLife_8BDCDEED618A610AB05094AD92AD1875" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1_A613A975D9AA73E86CBB94AD92ADE983_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1_A613A975D9AA73E86CBB94AD92ADE983" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Intangible assets, weighted average useful life (years)</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1_A613A975D9AA73E86CBB94AD92ADE983_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1_A613A975D9AA73E86CBB94AD92ADE983" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Remaining Amortization Period</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1_A613A975D9AA73E86CBB94AD92ADE983" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1_A613A975D9AA73E86CBB94AD92ADE983" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1_A613A975D9AA73E86CBB94AD92ADE983" xlink:type="arc" />
    <link:label id="lab_us-gaap_AmortizationOfIntangibleAssets_4EEE552D950E9D65B6F094AD92ADAE3E_terseLabel_en-US" xlink:label="lab_us-gaap_AmortizationOfIntangibleAssets_4EEE552D950E9D65B6F094AD92ADAE3E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Intangible assets, amortization expense</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AmortizationOfIntangibleAssets" xlink:label="loc_us-gaap_AmortizationOfIntangibleAssets_4EEE552D950E9D65B6F094AD92ADAE3E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AmortizationOfIntangibleAssets_4EEE552D950E9D65B6F094AD92ADAE3E" xlink:to="lab_us-gaap_AmortizationOfIntangibleAssets_4EEE552D950E9D65B6F094AD92ADAE3E" xlink:type="arc" />
    <link:label id="lab_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract_EC76877FCC449093D358C56747B3B2FF_label_en-US" xlink:label="lab_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract_EC76877FCC449093D358C56747B3B2FF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative Instruments and Hedging Activities Disclosure [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract" xlink:label="loc_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract_EC76877FCC449093D358C56747B3B2FF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract_EC76877FCC449093D358C56747B3B2FF" xlink:to="lab_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract_EC76877FCC449093D358C56747B3B2FF" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock_BCFF81ECBDC80425CA7AC56747B3B8EC_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock_BCFF81ECBDC80425CA7AC56747B3B8EC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of Notional Amounts and Fair Value</link:label>
    <link:label id="lab_us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock_BCFF81ECBDC80425CA7AC56747B3B8EC_label_en-US" xlink:label="lab_us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock_BCFF81ECBDC80425CA7AC56747B3B8EC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock" xlink:label="loc_us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock_BCFF81ECBDC80425CA7AC56747B3B8EC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock_BCFF81ECBDC80425CA7AC56747B3B8EC" xlink:to="lab_us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock_BCFF81ECBDC80425CA7AC56747B3B8EC" xlink:type="arc" />
    <link:label id="lab_us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_84057D4B91E172AE87C2C5674A33386C_terseLabel_en-US" xlink:label="lab_us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_84057D4B91E172AE87C2C5674A33386C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Stock-Based Compensation</link:label>
    <link:label id="lab_us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_84057D4B91E172AE87C2C5674A33386C_label_en-US" xlink:label="lab_us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_84057D4B91E172AE87C2C5674A33386C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of Compensation Related Costs, Share-based Payments [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock" xlink:label="loc_us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_84057D4B91E172AE87C2C5674A33386C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_84057D4B91E172AE87C2C5674A33386C" xlink:to="lab_us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_84057D4B91E172AE87C2C5674A33386C" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfDebtInstrumentsTextBlock_2DD6A6536ECA7502BBECC5674765D673_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfDebtInstrumentsTextBlock_2DD6A6536ECA7502BBECC5674765D673" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Long-term Debt</link:label>
    <link:label id="lab_us-gaap_ScheduleOfDebtInstrumentsTextBlock_2DD6A6536ECA7502BBECC5674765D673_label_en-US" xlink:label="lab_us-gaap_ScheduleOfDebtInstrumentsTextBlock_2DD6A6536ECA7502BBECC5674765D673" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Long-term Debt Instruments [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfDebtInstrumentsTextBlock" xlink:label="loc_us-gaap_ScheduleOfDebtInstrumentsTextBlock_2DD6A6536ECA7502BBECC5674765D673" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfDebtInstrumentsTextBlock_2DD6A6536ECA7502BBECC5674765D673" xlink:to="lab_us-gaap_ScheduleOfDebtInstrumentsTextBlock_2DD6A6536ECA7502BBECC5674765D673" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_ED89F31139060791C63F03820BBCC0BB_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_ED89F31139060791C63F03820BBCC0BB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Remainder of 2019</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_ED89F31139060791C63F03820BBCC0BB_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_ED89F31139060791C63F03820BBCC0BB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_ED89F31139060791C63F03820BBCC0BB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_ED89F31139060791C63F03820BBCC0BB" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_ED89F31139060791C63F03820BBCC0BB" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_0D613C85B7E0173960D703820BBCDFA9_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_0D613C85B7E0173960D703820BBCDFA9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2020</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_0D613C85B7E0173960D703820BBCDFA9_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_0D613C85B7E0173960D703820BBCDFA9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Amortization Expense, Year Two</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_0D613C85B7E0173960D703820BBCDFA9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_0D613C85B7E0173960D703820BBCDFA9" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_0D613C85B7E0173960D703820BBCDFA9" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_C260B75CCA30B237042C03820BBCE33F_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_C260B75CCA30B237042C03820BBCE33F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2021</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_C260B75CCA30B237042C03820BBCE33F_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_C260B75CCA30B237042C03820BBCE33F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Amortization Expense, Year Three</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_C260B75CCA30B237042C03820BBCE33F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_C260B75CCA30B237042C03820BBCE33F" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_C260B75CCA30B237042C03820BBCE33F" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_3F7995C9FFEAE379B76503820BBC4FFE_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_3F7995C9FFEAE379B76503820BBC4FFE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2022</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_3F7995C9FFEAE379B76503820BBC4FFE_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_3F7995C9FFEAE379B76503820BBC4FFE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Amortization Expense, Year Four</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_3F7995C9FFEAE379B76503820BBC4FFE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_3F7995C9FFEAE379B76503820BBC4FFE" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_3F7995C9FFEAE379B76503820BBC4FFE" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_A1385E57F461D325808E03820BBDE4BD_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_A1385E57F461D325808E03820BBDE4BD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2023</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_A1385E57F461D325808E03820BBDE4BD_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_A1385E57F461D325808E03820BBDE4BD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Amortization Expense, Year Five</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_A1385E57F461D325808E03820BBDE4BD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_A1385E57F461D325808E03820BBDE4BD" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_A1385E57F461D325808E03820BBDE4BD" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_433B11612E495A8F8E394678EC49D4DE_label_en-US" xlink:label="lab_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_433B11612E495A8F8E394678EC49D4DE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Commitments and Contingencies Disclosure [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:label="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_433B11612E495A8F8E394678EC49D4DE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_433B11612E495A8F8E394678EC49D4DE" xlink:to="lab_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_433B11612E495A8F8E394678EC49D4DE" xlink:type="arc" />
    <link:label id="lab_us-gaap_LossContingenciesTable_51B92BCB852E3256E40A4678EC4961EA_terseLabel_en-US" xlink:label="lab_us-gaap_LossContingenciesTable_51B92BCB852E3256E40A4678EC4961EA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loss Contingencies [Table]</link:label>
    <link:label id="lab_us-gaap_LossContingenciesTable_51B92BCB852E3256E40A4678EC4961EA_label_en-US" xlink:label="lab_us-gaap_LossContingenciesTable_51B92BCB852E3256E40A4678EC4961EA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loss Contingencies [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LossContingenciesTable" xlink:label="loc_us-gaap_LossContingenciesTable_51B92BCB852E3256E40A4678EC4961EA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LossContingenciesTable_51B92BCB852E3256E40A4678EC4961EA" xlink:to="lab_us-gaap_LossContingenciesTable_51B92BCB852E3256E40A4678EC4961EA" xlink:type="arc" />
    <link:label id="lab_srt_OwnershipAxis_33202CE42DE079A71F5246FDBB1C881A_terseLabel_en-US" xlink:label="lab_srt_OwnershipAxis_33202CE42DE079A71F5246FDBB1C881A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Ownership [Axis]</link:label>
    <link:label id="lab_srt_OwnershipAxis_33202CE42DE079A71F5246FDBB1C881A_label_en-US" xlink:label="lab_srt_OwnershipAxis_33202CE42DE079A71F5246FDBB1C881A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Ownership [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_OwnershipAxis" xlink:label="loc_srt_OwnershipAxis_33202CE42DE079A71F5246FDBB1C881A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_OwnershipAxis_33202CE42DE079A71F5246FDBB1C881A" xlink:to="lab_srt_OwnershipAxis_33202CE42DE079A71F5246FDBB1C881A" xlink:type="arc" />
    <link:label id="lab_srt_OwnershipDomain_DBFE8E2F19275A613DF146FDBB1DEB7E_terseLabel_en-US" xlink:label="lab_srt_OwnershipDomain_DBFE8E2F19275A613DF146FDBB1DEB7E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Ownership [Domain]</link:label>
    <link:label id="lab_srt_OwnershipDomain_DBFE8E2F19275A613DF146FDBB1DEB7E_label_en-US" xlink:label="lab_srt_OwnershipDomain_DBFE8E2F19275A613DF146FDBB1DEB7E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Ownership [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_OwnershipDomain" xlink:label="loc_srt_OwnershipDomain_DBFE8E2F19275A613DF146FDBB1DEB7E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_OwnershipDomain_DBFE8E2F19275A613DF146FDBB1DEB7E" xlink:to="lab_srt_OwnershipDomain_DBFE8E2F19275A613DF146FDBB1DEB7E" xlink:type="arc" />
    <link:label id="lab_srt_SubsidiariesMember_691E7A8072403E5C8E0F46FDBC9C8201_terseLabel_en-US" xlink:label="lab_srt_SubsidiariesMember_691E7A8072403E5C8E0F46FDBC9C8201" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Subsidiaries</link:label>
    <link:label id="lab_srt_SubsidiariesMember_691E7A8072403E5C8E0F46FDBC9C8201_label_en-US" xlink:label="lab_srt_SubsidiariesMember_691E7A8072403E5C8E0F46FDBC9C8201" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Subsidiaries [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_SubsidiariesMember" xlink:label="loc_srt_SubsidiariesMember_691E7A8072403E5C8E0F46FDBC9C8201" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_SubsidiariesMember_691E7A8072403E5C8E0F46FDBC9C8201" xlink:to="lab_srt_SubsidiariesMember_691E7A8072403E5C8E0F46FDBC9C8201" xlink:type="arc" />
    <link:label id="lab_us-gaap_LossContingenciesByNatureOfContingencyAxis_D6FF997A9E909752923A46FC3E026903_terseLabel_en-US" xlink:label="lab_us-gaap_LossContingenciesByNatureOfContingencyAxis_D6FF997A9E909752923A46FC3E026903" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loss Contingency Nature [Axis]</link:label>
    <link:label id="lab_us-gaap_LossContingenciesByNatureOfContingencyAxis_D6FF997A9E909752923A46FC3E026903_label_en-US" xlink:label="lab_us-gaap_LossContingenciesByNatureOfContingencyAxis_D6FF997A9E909752923A46FC3E026903" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loss Contingency Nature [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LossContingenciesByNatureOfContingencyAxis" xlink:label="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_D6FF997A9E909752923A46FC3E026903" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_D6FF997A9E909752923A46FC3E026903" xlink:to="lab_us-gaap_LossContingenciesByNatureOfContingencyAxis_D6FF997A9E909752923A46FC3E026903" xlink:type="arc" />
    <link:label id="lab_us-gaap_LossContingencyNatureDomain_B6D6B6780D53C7CDA62246FC3E020BC5_terseLabel_en-US" xlink:label="lab_us-gaap_LossContingencyNatureDomain_B6D6B6780D53C7CDA62246FC3E020BC5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loss Contingency, Nature [Domain]</link:label>
    <link:label id="lab_us-gaap_LossContingencyNatureDomain_B6D6B6780D53C7CDA62246FC3E020BC5_label_en-US" xlink:label="lab_us-gaap_LossContingencyNatureDomain_B6D6B6780D53C7CDA62246FC3E020BC5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loss Contingency, Nature [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LossContingencyNatureDomain" xlink:label="loc_us-gaap_LossContingencyNatureDomain_B6D6B6780D53C7CDA62246FC3E020BC5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LossContingencyNatureDomain_B6D6B6780D53C7CDA62246FC3E020BC5" xlink:to="lab_us-gaap_LossContingencyNatureDomain_B6D6B6780D53C7CDA62246FC3E020BC5" xlink:type="arc" />
    <link:label id="lab_wab_PositiveTrainControlPatentsMember_EB16DC3A8A8F3C22382446FC3E5837AE_terseLabel_en-US" xlink:label="lab_wab_PositiveTrainControlPatentsMember_EB16DC3A8A8F3C22382446FC3E5837AE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Positive Train Control Patents</link:label>
    <link:label id="lab_wab_PositiveTrainControlPatentsMember_EB16DC3A8A8F3C22382446FC3E5837AE_label_en-US" xlink:label="lab_wab_PositiveTrainControlPatentsMember_EB16DC3A8A8F3C22382446FC3E5837AE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Positive Train Control Patents [Member]</link:label>
    <link:label id="lab_wab_PositiveTrainControlPatentsMember_EB16DC3A8A8F3C22382446FC3E5837AE_documentation_en-US" xlink:label="lab_wab_PositiveTrainControlPatentsMember_EB16DC3A8A8F3C22382446FC3E5837AE" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Positive Train Control Patents [Member]</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_PositiveTrainControlPatentsMember" xlink:label="loc_wab_PositiveTrainControlPatentsMember_EB16DC3A8A8F3C22382446FC3E5837AE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_PositiveTrainControlPatentsMember_EB16DC3A8A8F3C22382446FC3E5837AE" xlink:to="lab_wab_PositiveTrainControlPatentsMember_EB16DC3A8A8F3C22382446FC3E5837AE" xlink:type="arc" />
    <link:label id="lab_wab_EndofTrainPatentsMember_C9E0349D7C8EE36059EC46FDBC4655B9_terseLabel_en-US" xlink:label="lab_wab_EndofTrainPatentsMember_C9E0349D7C8EE36059EC46FDBC4655B9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">End of Train Patents</link:label>
    <link:label id="lab_wab_EndofTrainPatentsMember_C9E0349D7C8EE36059EC46FDBC4655B9_label_en-US" xlink:label="lab_wab_EndofTrainPatentsMember_C9E0349D7C8EE36059EC46FDBC4655B9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">End of Train Patents [Member]</link:label>
    <link:label id="lab_wab_EndofTrainPatentsMember_C9E0349D7C8EE36059EC46FDBC4655B9_documentation_en-US" xlink:label="lab_wab_EndofTrainPatentsMember_C9E0349D7C8EE36059EC46FDBC4655B9" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">End of Train Patents [Member]</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_EndofTrainPatentsMember" xlink:label="loc_wab_EndofTrainPatentsMember_C9E0349D7C8EE36059EC46FDBC4655B9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_EndofTrainPatentsMember_C9E0349D7C8EE36059EC46FDBC4655B9" xlink:to="lab_wab_EndofTrainPatentsMember_C9E0349D7C8EE36059EC46FDBC4655B9" xlink:type="arc" />
    <link:label id="lab_srt_LitigationCaseAxis_777E16D4316B8357A2044678EC4B2B1D_terseLabel_en-US" xlink:label="lab_srt_LitigationCaseAxis_777E16D4316B8357A2044678EC4B2B1D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Litigation Case [Axis]</link:label>
    <link:label id="lab_srt_LitigationCaseAxis_777E16D4316B8357A2044678EC4B2B1D_label_en-US" xlink:label="lab_srt_LitigationCaseAxis_777E16D4316B8357A2044678EC4B2B1D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Litigation Case [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_LitigationCaseAxis" xlink:label="loc_srt_LitigationCaseAxis_777E16D4316B8357A2044678EC4B2B1D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_LitigationCaseAxis_777E16D4316B8357A2044678EC4B2B1D" xlink:to="lab_srt_LitigationCaseAxis_777E16D4316B8357A2044678EC4B2B1D" xlink:type="arc" />
    <link:label id="lab_srt_LitigationCaseTypeDomain_2493B550A7676D90ED114678EC4BE47F_terseLabel_en-US" xlink:label="lab_srt_LitigationCaseTypeDomain_2493B550A7676D90ED114678EC4BE47F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Litigation Case [Domain]</link:label>
    <link:label id="lab_srt_LitigationCaseTypeDomain_2493B550A7676D90ED114678EC4BE47F_label_en-US" xlink:label="lab_srt_LitigationCaseTypeDomain_2493B550A7676D90ED114678EC4BE47F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Litigation Case [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_LitigationCaseTypeDomain" xlink:label="loc_srt_LitigationCaseTypeDomain_2493B550A7676D90ED114678EC4BE47F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_LitigationCaseTypeDomain_2493B550A7676D90ED114678EC4BE47F" xlink:to="lab_srt_LitigationCaseTypeDomain_2493B550A7676D90ED114678EC4BE47F" xlink:type="arc" />
    <link:label id="lab_wab_SiemensIndustryInc.Member_25814D18F265619C732A4678EC4B54E5_terseLabel_en-US" xlink:label="lab_wab_SiemensIndustryInc.Member_25814D18F265619C732A4678EC4B54E5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Siemens Industry, Inc.</link:label>
    <link:label id="lab_wab_SiemensIndustryInc.Member_25814D18F265619C732A4678EC4B54E5_label_en-US" xlink:label="lab_wab_SiemensIndustryInc.Member_25814D18F265619C732A4678EC4B54E5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Siemens Industry, Inc. [Member]</link:label>
    <link:label id="lab_wab_SiemensIndustryInc.Member_25814D18F265619C732A4678EC4B54E5_documentation_en-US" xlink:label="lab_wab_SiemensIndustryInc.Member_25814D18F265619C732A4678EC4B54E5" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Siemens Industry, Inc. [Member]</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_SiemensIndustryInc.Member" xlink:label="loc_wab_SiemensIndustryInc.Member_25814D18F265619C732A4678EC4B54E5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_SiemensIndustryInc.Member_25814D18F265619C732A4678EC4B54E5" xlink:to="lab_wab_SiemensIndustryInc.Member_25814D18F265619C732A4678EC4B54E5" xlink:type="arc" />
    <link:label id="lab_wab_DenverTransitInstallationofConstantWirelessCrossingsMember_7E8DFC38E1C1E5D5190D46FECBA17980_terseLabel_en-US" xlink:label="lab_wab_DenverTransitInstallationofConstantWirelessCrossingsMember_7E8DFC38E1C1E5D5190D46FECBA17980" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Denver Transit, Installation of Constant Wireless Crossings</link:label>
    <link:label id="lab_wab_DenverTransitInstallationofConstantWirelessCrossingsMember_7E8DFC38E1C1E5D5190D46FECBA17980_label_en-US" xlink:label="lab_wab_DenverTransitInstallationofConstantWirelessCrossingsMember_7E8DFC38E1C1E5D5190D46FECBA17980" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Denver Transit Installation of Constant Wireless Crossings [Member]</link:label>
    <link:label id="lab_wab_DenverTransitInstallationofConstantWirelessCrossingsMember_7E8DFC38E1C1E5D5190D46FECBA17980_documentation_en-US" xlink:label="lab_wab_DenverTransitInstallationofConstantWirelessCrossingsMember_7E8DFC38E1C1E5D5190D46FECBA17980" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Denver Transit Installation of Constant Wireless Crossings [Member]</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_DenverTransitInstallationofConstantWirelessCrossingsMember" xlink:label="loc_wab_DenverTransitInstallationofConstantWirelessCrossingsMember_7E8DFC38E1C1E5D5190D46FECBA17980" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_DenverTransitInstallationofConstantWirelessCrossingsMember_7E8DFC38E1C1E5D5190D46FECBA17980" xlink:to="lab_wab_DenverTransitInstallationofConstantWirelessCrossingsMember_7E8DFC38E1C1E5D5190D46FECBA17980" xlink:type="arc" />
    <link:label id="lab_us-gaap_LitigationStatusAxis_269697BD95F06915C0114678EC4CE37C_terseLabel_en-US" xlink:label="lab_us-gaap_LitigationStatusAxis_269697BD95F06915C0114678EC4CE37C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Litigation Status [Axis]</link:label>
    <link:label id="lab_us-gaap_LitigationStatusAxis_269697BD95F06915C0114678EC4CE37C_label_en-US" xlink:label="lab_us-gaap_LitigationStatusAxis_269697BD95F06915C0114678EC4CE37C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Litigation Status [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LitigationStatusAxis" xlink:label="loc_us-gaap_LitigationStatusAxis_269697BD95F06915C0114678EC4CE37C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LitigationStatusAxis_269697BD95F06915C0114678EC4CE37C" xlink:to="lab_us-gaap_LitigationStatusAxis_269697BD95F06915C0114678EC4CE37C" xlink:type="arc" />
    <link:label id="lab_us-gaap_LitigationStatusDomain_5394F7D81572F341C64F4678EC4C35CE_terseLabel_en-US" xlink:label="lab_us-gaap_LitigationStatusDomain_5394F7D81572F341C64F4678EC4C35CE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Litigation Status [Domain]</link:label>
    <link:label id="lab_us-gaap_LitigationStatusDomain_5394F7D81572F341C64F4678EC4C35CE_label_en-US" xlink:label="lab_us-gaap_LitigationStatusDomain_5394F7D81572F341C64F4678EC4C35CE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Litigation Status [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LitigationStatusDomain" xlink:label="loc_us-gaap_LitigationStatusDomain_5394F7D81572F341C64F4678EC4C35CE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LitigationStatusDomain_5394F7D81572F341C64F4678EC4C35CE" xlink:to="lab_us-gaap_LitigationStatusDomain_5394F7D81572F341C64F4678EC4C35CE" xlink:type="arc" />
    <link:label id="lab_us-gaap_SettledLitigationMember_D6B329A40CA453F6508646FC3F208898_terseLabel_en-US" xlink:label="lab_us-gaap_SettledLitigationMember_D6B329A40CA453F6508646FC3F208898" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Settled Litigation</link:label>
    <link:label id="lab_us-gaap_SettledLitigationMember_D6B329A40CA453F6508646FC3F208898_label_en-US" xlink:label="lab_us-gaap_SettledLitigationMember_D6B329A40CA453F6508646FC3F208898" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Settled Litigation [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SettledLitigationMember" xlink:label="loc_us-gaap_SettledLitigationMember_D6B329A40CA453F6508646FC3F208898" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SettledLitigationMember_D6B329A40CA453F6508646FC3F208898" xlink:to="lab_us-gaap_SettledLitigationMember_D6B329A40CA453F6508646FC3F208898" xlink:type="arc" />
    <link:label id="lab_us-gaap_ThreatenedLitigationMember_A63060C61AD2C5E9EAE24678EC4C83ED_terseLabel_en-US" xlink:label="lab_us-gaap_ThreatenedLitigationMember_A63060C61AD2C5E9EAE24678EC4C83ED" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Threatened Litigation</link:label>
    <link:label id="lab_us-gaap_ThreatenedLitigationMember_A63060C61AD2C5E9EAE24678EC4C83ED_label_en-US" xlink:label="lab_us-gaap_ThreatenedLitigationMember_A63060C61AD2C5E9EAE24678EC4C83ED" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Threatened Litigation [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ThreatenedLitigationMember" xlink:label="loc_us-gaap_ThreatenedLitigationMember_A63060C61AD2C5E9EAE24678EC4C83ED" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ThreatenedLitigationMember_A63060C61AD2C5E9EAE24678EC4C83ED" xlink:to="lab_us-gaap_ThreatenedLitigationMember_A63060C61AD2C5E9EAE24678EC4C83ED" xlink:type="arc" />
    <link:label id="lab_us-gaap_LossContingenciesLineItems_6CF9DDD1A4CB053189394678EC4D5BB9_terseLabel_en-US" xlink:label="lab_us-gaap_LossContingenciesLineItems_6CF9DDD1A4CB053189394678EC4D5BB9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loss Contingencies [Line Items]</link:label>
    <link:label id="lab_us-gaap_LossContingenciesLineItems_6CF9DDD1A4CB053189394678EC4D5BB9_label_en-US" xlink:label="lab_us-gaap_LossContingenciesLineItems_6CF9DDD1A4CB053189394678EC4D5BB9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loss Contingencies [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LossContingenciesLineItems" xlink:label="loc_us-gaap_LossContingenciesLineItems_6CF9DDD1A4CB053189394678EC4D5BB9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LossContingenciesLineItems_6CF9DDD1A4CB053189394678EC4D5BB9" xlink:to="lab_us-gaap_LossContingenciesLineItems_6CF9DDD1A4CB053189394678EC4D5BB9" xlink:type="arc" />
    <link:label id="lab_us-gaap_LossContingencyDamagesAwardedValue_561AE2A889DA86C7267946FA9C8390CF_terseLabel_en-US" xlink:label="lab_us-gaap_LossContingencyDamagesAwardedValue_561AE2A889DA86C7267946FA9C8390CF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Damages awarded</link:label>
    <link:label id="lab_us-gaap_LossContingencyDamagesAwardedValue_561AE2A889DA86C7267946FA9C8390CF_label_en-US" xlink:label="lab_us-gaap_LossContingencyDamagesAwardedValue_561AE2A889DA86C7267946FA9C8390CF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loss Contingency, Damages Awarded, Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LossContingencyDamagesAwardedValue" xlink:label="loc_us-gaap_LossContingencyDamagesAwardedValue_561AE2A889DA86C7267946FA9C8390CF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LossContingencyDamagesAwardedValue_561AE2A889DA86C7267946FA9C8390CF" xlink:to="lab_us-gaap_LossContingencyDamagesAwardedValue_561AE2A889DA86C7267946FA9C8390CF" xlink:type="arc" />
    <link:label id="lab_us-gaap_LossContingencyDamagesSoughtValue_1678CF6C2979A4F7B6164678EC4DF0C5_terseLabel_en-US" xlink:label="lab_us-gaap_LossContingencyDamagesSoughtValue_1678CF6C2979A4F7B6164678EC4DF0C5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Damages alleged</link:label>
    <link:label id="lab_us-gaap_LossContingencyDamagesSoughtValue_1678CF6C2979A4F7B6164678EC4DF0C5_label_en-US" xlink:label="lab_us-gaap_LossContingencyDamagesSoughtValue_1678CF6C2979A4F7B6164678EC4DF0C5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loss Contingency, Damages Sought, Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LossContingencyDamagesSoughtValue" xlink:label="loc_us-gaap_LossContingencyDamagesSoughtValue_1678CF6C2979A4F7B6164678EC4DF0C5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LossContingencyDamagesSoughtValue_1678CF6C2979A4F7B6164678EC4DF0C5" xlink:to="lab_us-gaap_LossContingencyDamagesSoughtValue_1678CF6C2979A4F7B6164678EC4DF0C5" xlink:type="arc" />
    <link:label id="lab_wab_RestrictedStockAndUnitsMember_18C913A96D6782D5F23F9345136DD802_terseLabel_en-US" xlink:label="lab_wab_RestrictedStockAndUnitsMember_18C913A96D6782D5F23F9345136DD802" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Restricted Stock and Units</link:label>
    <link:label id="lab_wab_RestrictedStockAndUnitsMember_18C913A96D6782D5F23F9345136DD802_label_en-US" xlink:label="lab_wab_RestrictedStockAndUnitsMember_18C913A96D6782D5F23F9345136DD802" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restricted Stock And Units [Member]</link:label>
    <link:label id="lab_wab_RestrictedStockAndUnitsMember_18C913A96D6782D5F23F9345136DD802_documentation_en-US" xlink:label="lab_wab_RestrictedStockAndUnitsMember_18C913A96D6782D5F23F9345136DD802" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Restricted stock and units.</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_RestrictedStockAndUnitsMember" xlink:label="loc_wab_RestrictedStockAndUnitsMember_18C913A96D6782D5F23F9345136DD802" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_RestrictedStockAndUnitsMember_18C913A96D6782D5F23F9345136DD802" xlink:to="lab_wab_RestrictedStockAndUnitsMember_18C913A96D6782D5F23F9345136DD802" xlink:type="arc" />
    <link:label id="lab_us-gaap_PerformanceSharesMember_DA87805AB0ADEBBC7B169345136E9E16_verboseLabel_en-US" xlink:label="lab_us-gaap_PerformanceSharesMember_DA87805AB0ADEBBC7B169345136E9E16" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Incentive Stock Units</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PerformanceSharesMember" xlink:label="loc_us-gaap_PerformanceSharesMember_DA87805AB0ADEBBC7B169345136E9E16" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PerformanceSharesMember_DA87805AB0ADEBBC7B169345136E9E16" xlink:to="lab_us-gaap_PerformanceSharesMember_DA87805AB0ADEBBC7B169345136E9E16" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_7D9F8D5247676AF12A6C9345136E26E2_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_7D9F8D5247676AF12A6C9345136E26E2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_7D9F8D5247676AF12A6C9345136E26E2_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_7D9F8D5247676AF12A6C9345136E26E2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_7D9F8D5247676AF12A6C9345136E26E2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_7D9F8D5247676AF12A6C9345136E26E2" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_7D9F8D5247676AF12A6C9345136E26E2" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_FEB29FE63FCBB0FDA7F39345136E9894_periodStartLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_FEB29FE63FCBB0FDA7F39345136E9894" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Outstanding, beginning of period (in shares)</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_FEB29FE63FCBB0FDA7F39345136E9894_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_FEB29FE63FCBB0FDA7F39345136E9894" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_FEB29FE63FCBB0FDA7F39345136E9894" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_FEB29FE63FCBB0FDA7F39345136E9894" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_FEB29FE63FCBB0FDA7F39345136E9894" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_14BEE5E0CC8C4AE38C199345136F527A_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_14BEE5E0CC8C4AE38C199345136F527A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Granted (in shares)</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_14BEE5E0CC8C4AE38C199345136F527A_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_14BEE5E0CC8C4AE38C199345136F527A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_14BEE5E0CC8C4AE38C199345136F527A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_14BEE5E0CC8C4AE38C199345136F527A" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_14BEE5E0CC8C4AE38C199345136F527A" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_A63EECB59C0CC9902AA09345136F2D30_negatedLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_A63EECB59C0CC9902AA09345136F2D30" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Vested (in shares)</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_A63EECB59C0CC9902AA09345136F2D30_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_A63EECB59C0CC9902AA09345136F2D30" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_A63EECB59C0CC9902AA09345136F2D30" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_A63EECB59C0CC9902AA09345136F2D30" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_A63EECB59C0CC9902AA09345136F2D30" xlink:type="arc" />
    <link:label id="lab_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumberExpectedToVest_917B4500BE385CE9FC149345136F13A1_terseLabel_en-US" xlink:label="lab_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumberExpectedToVest_917B4500BE385CE9FC149345136F13A1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Adjustment for incentive stock awards expected to vest (in shares)</link:label>
    <link:label id="lab_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumberExpectedToVest_917B4500BE385CE9FC149345136F13A1_label_en-US" xlink:label="lab_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumberExpectedToVest_917B4500BE385CE9FC149345136F13A1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number Expected To Vest</link:label>
    <link:label id="lab_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumberExpectedToVest_917B4500BE385CE9FC149345136F13A1_documentation_en-US" xlink:label="lab_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumberExpectedToVest_917B4500BE385CE9FC149345136F13A1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Share based compensation arrangement by share based payment award equity instruments other than options nonvested number expected to vest.</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumberExpectedToVest" xlink:label="loc_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumberExpectedToVest_917B4500BE385CE9FC149345136F13A1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumberExpectedToVest_917B4500BE385CE9FC149345136F13A1" xlink:to="lab_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumberExpectedToVest_917B4500BE385CE9FC149345136F13A1" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_E814604E2E361DA822EB9345136F9C0B_negatedLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_E814604E2E361DA822EB9345136F9C0B" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Canceled (in shares)</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_E814604E2E361DA822EB9345136F9C0B_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_E814604E2E361DA822EB9345136F9C0B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_E814604E2E361DA822EB9345136F9C0B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_E814604E2E361DA822EB9345136F9C0B" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_E814604E2E361DA822EB9345136F9C0B" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_34CF052B640AD70D28E29345137064E1_periodEndLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_34CF052B640AD70D28E29345137064E1" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Outstanding, end of period (in shares)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_34CF052B640AD70D28E29345137064E1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_34CF052B640AD70D28E29345137064E1" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_34CF052B640AD70D28E29345137064E1" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_73BD09FE676C04A9447F9345137080BF_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_73BD09FE676C04A9447F9345137080BF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_73BD09FE676C04A9447F9345137080BF_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_73BD09FE676C04A9447F9345137080BF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_73BD09FE676C04A9447F9345137080BF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_73BD09FE676C04A9447F9345137080BF" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_73BD09FE676C04A9447F9345137080BF" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_570740402131F891D08593451370D165_periodStartLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_570740402131F891D08593451370D165" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Outstanding, beginning of period (in dollars per share)</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_570740402131F891D08593451370D165_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_570740402131F891D08593451370D165" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_570740402131F891D08593451370D165" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_570740402131F891D08593451370D165" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_570740402131F891D08593451370D165" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_676F51804E930440C6AF93451370AEBC_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_676F51804E930440C6AF93451370AEBC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Granted (in dollars per share)</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_676F51804E930440C6AF93451370AEBC_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_676F51804E930440C6AF93451370AEBC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_676F51804E930440C6AF93451370AEBC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_676F51804E930440C6AF93451370AEBC" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_676F51804E930440C6AF93451370AEBC" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_CCA984619715043509D6934513711855_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_CCA984619715043509D6934513711855" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Vested (in dollars per share)</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_CCA984619715043509D6934513711855_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_CCA984619715043509D6934513711855" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_CCA984619715043509D6934513711855" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_CCA984619715043509D6934513711855" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_CCA984619715043509D6934513711855" xlink:type="arc" />
    <link:label id="lab_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNetPerformanceAdjustmentWeightedAverageNetPerformanceAdjustmentFairValue_97915BD3ACEC13B54F109345137134E0_terseLabel_en-US" xlink:label="lab_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNetPerformanceAdjustmentWeightedAverageNetPerformanceAdjustmentFairValue_97915BD3ACEC13B54F109345137134E0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Adjustment for incentive stock awards expected to vest (in dollars per share)</link:label>
    <link:label id="lab_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNetPerformanceAdjustmentWeightedAverageNetPerformanceAdjustmentFairValue_97915BD3ACEC13B54F109345137134E0_label_en-US" xlink:label="lab_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNetPerformanceAdjustmentWeightedAverageNetPerformanceAdjustmentFairValue_97915BD3ACEC13B54F109345137134E0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Net Performance Adjustment Weighted Average Net Performance Adjustment Fair Value</link:label>
    <link:label id="lab_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNetPerformanceAdjustmentWeightedAverageNetPerformanceAdjustmentFairValue_97915BD3ACEC13B54F109345137134E0_documentation_en-US" xlink:label="lab_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNetPerformanceAdjustmentWeightedAverageNetPerformanceAdjustmentFairValue_97915BD3ACEC13B54F109345137134E0" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Share based compensation arrangement by share based payment award equity instruments other than options net performance adjustment weighted average net performance adjustment fair value.</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNetPerformanceAdjustmentWeightedAverageNetPerformanceAdjustmentFairValue" xlink:label="loc_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNetPerformanceAdjustmentWeightedAverageNetPerformanceAdjustmentFairValue_97915BD3ACEC13B54F109345137134E0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNetPerformanceAdjustmentWeightedAverageNetPerformanceAdjustmentFairValue_97915BD3ACEC13B54F109345137134E0" xlink:to="lab_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNetPerformanceAdjustmentWeightedAverageNetPerformanceAdjustmentFairValue_97915BD3ACEC13B54F109345137134E0" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_0A1ED1624FEB356EFE0C93451371A90D_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_0A1ED1624FEB356EFE0C93451371A90D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Canceled (in dollars per share)</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_0A1ED1624FEB356EFE0C93451371A90D_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_0A1ED1624FEB356EFE0C93451371A90D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_0A1ED1624FEB356EFE0C93451371A90D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_0A1ED1624FEB356EFE0C93451371A90D" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_0A1ED1624FEB356EFE0C93451371A90D" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_0D83536811086C3027EA934A1BBCDE5B_periodEndLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_0D83536811086C3027EA934A1BBCDE5B" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Outstanding, end of period (in dollars per share)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_0D83536811086C3027EA934A1BBCDE5B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_0D83536811086C3027EA934A1BBCDE5B" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_0D83536811086C3027EA934A1BBCDE5B" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessCombinationsAbstract_4A3484B1F5CA23D2EBDB9CE85843B511_label_en-US" xlink:label="lab_us-gaap_BusinessCombinationsAbstract_4A3484B1F5CA23D2EBDB9CE85843B511" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Combinations [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationsAbstract" xlink:label="loc_us-gaap_BusinessCombinationsAbstract_4A3484B1F5CA23D2EBDB9CE85843B511" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessCombinationsAbstract_4A3484B1F5CA23D2EBDB9CE85843B511" xlink:to="lab_us-gaap_BusinessCombinationsAbstract_4A3484B1F5CA23D2EBDB9CE85843B511" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_7B134DA9B3D00BC01D2B9CE85843ABCE_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_7B134DA9B3D00BC01D2B9CE85843ABCE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Business Acquisitions, by Acquisition [Table]</link:label>
    <link:label id="lab_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_7B134DA9B3D00BC01D2B9CE85843ABCE_label_en-US" xlink:label="lab_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_7B134DA9B3D00BC01D2B9CE85843ABCE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Business Acquisitions, by Acquisition [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_7B134DA9B3D00BC01D2B9CE85843ABCE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_7B134DA9B3D00BC01D2B9CE85843ABCE" xlink:to="lab_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_7B134DA9B3D00BC01D2B9CE85843ABCE" xlink:type="arc" />
    <link:label id="lab_us-gaap_SubsequentEventTypeAxis_0C2475805124F0594BB79CE858430BEE_terseLabel_en-US" xlink:label="lab_us-gaap_SubsequentEventTypeAxis_0C2475805124F0594BB79CE858430BEE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Subsequent Event Type [Axis]</link:label>
    <link:label id="lab_us-gaap_SubsequentEventTypeAxis_0C2475805124F0594BB79CE858430BEE_label_en-US" xlink:label="lab_us-gaap_SubsequentEventTypeAxis_0C2475805124F0594BB79CE858430BEE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Subsequent Event Type [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SubsequentEventTypeAxis" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_0C2475805124F0594BB79CE858430BEE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_0C2475805124F0594BB79CE858430BEE" xlink:to="lab_us-gaap_SubsequentEventTypeAxis_0C2475805124F0594BB79CE858430BEE" xlink:type="arc" />
    <link:label id="lab_us-gaap_SubsequentEventTypeDomain_A65B9F0DF8E41AE21AF99CE85843C56C_terseLabel_en-US" xlink:label="lab_us-gaap_SubsequentEventTypeDomain_A65B9F0DF8E41AE21AF99CE85843C56C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Subsequent Event Type [Domain]</link:label>
    <link:label id="lab_us-gaap_SubsequentEventTypeDomain_A65B9F0DF8E41AE21AF99CE85843C56C_label_en-US" xlink:label="lab_us-gaap_SubsequentEventTypeDomain_A65B9F0DF8E41AE21AF99CE85843C56C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Subsequent Event Type [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SubsequentEventTypeDomain" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_A65B9F0DF8E41AE21AF99CE85843C56C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_A65B9F0DF8E41AE21AF99CE85843C56C" xlink:to="lab_us-gaap_SubsequentEventTypeDomain_A65B9F0DF8E41AE21AF99CE85843C56C" xlink:type="arc" />
    <link:label id="lab_us-gaap_SubsequentEventMember_9D202AF94EB44F8B4ACE9CE85843C299_terseLabel_en-US" xlink:label="lab_us-gaap_SubsequentEventMember_9D202AF94EB44F8B4ACE9CE85843C299" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Subsequent Event</link:label>
    <link:label id="lab_us-gaap_SubsequentEventMember_9D202AF94EB44F8B4ACE9CE85843C299_label_en-US" xlink:label="lab_us-gaap_SubsequentEventMember_9D202AF94EB44F8B4ACE9CE85843C299" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Subsequent Event [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SubsequentEventMember" xlink:label="loc_us-gaap_SubsequentEventMember_9D202AF94EB44F8B4ACE9CE85843C299" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SubsequentEventMember_9D202AF94EB44F8B4ACE9CE85843C299" xlink:to="lab_us-gaap_SubsequentEventMember_9D202AF94EB44F8B4ACE9CE85843C299" xlink:type="arc" />
    <link:label id="lab_dei_LegalEntityAxis_43656E1D19A648D061339CE85848597A_terseLabel_en-US" xlink:label="lab_dei_LegalEntityAxis_43656E1D19A648D061339CE85848597A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Legal Entity [Axis]</link:label>
    <link:label id="lab_dei_LegalEntityAxis_43656E1D19A648D061339CE85848597A_label_en-US" xlink:label="lab_dei_LegalEntityAxis_43656E1D19A648D061339CE85848597A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Legal Entity [Axis]</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_43656E1D19A648D061339CE85848597A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_LegalEntityAxis_43656E1D19A648D061339CE85848597A" xlink:to="lab_dei_LegalEntityAxis_43656E1D19A648D061339CE85848597A" xlink:type="arc" />
    <link:label id="lab_dei_EntityDomain_F5D1D452EB8EEF8F12219CE858487B41_terseLabel_en-US" xlink:label="lab_dei_EntityDomain_F5D1D452EB8EEF8F12219CE858487B41" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity [Domain]</link:label>
    <link:label id="lab_dei_EntityDomain_F5D1D452EB8EEF8F12219CE858487B41_label_en-US" xlink:label="lab_dei_EntityDomain_F5D1D452EB8EEF8F12219CE858487B41" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity [Domain]</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_F5D1D452EB8EEF8F12219CE858487B41" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityDomain_F5D1D452EB8EEF8F12219CE858487B41" xlink:to="lab_dei_EntityDomain_F5D1D452EB8EEF8F12219CE858487B41" xlink:type="arc" />
    <link:label id="lab_wab_WabtecMember_2A962FB53E34016D77449CE8584804B6_terseLabel_en-US" xlink:label="lab_wab_WabtecMember_2A962FB53E34016D77449CE8584804B6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Wabtec</link:label>
    <link:label id="lab_wab_WabtecMember_2A962FB53E34016D77449CE8584804B6_label_en-US" xlink:label="lab_wab_WabtecMember_2A962FB53E34016D77449CE8584804B6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Wabtec [Member]</link:label>
    <link:label id="lab_wab_WabtecMember_2A962FB53E34016D77449CE8584804B6_documentation_en-US" xlink:label="lab_wab_WabtecMember_2A962FB53E34016D77449CE8584804B6" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Wabtec [Member]</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_WabtecMember" xlink:label="loc_wab_WabtecMember_2A962FB53E34016D77449CE8584804B6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_WabtecMember_2A962FB53E34016D77449CE8584804B6" xlink:to="lab_wab_WabtecMember_2A962FB53E34016D77449CE8584804B6" xlink:type="arc" />
    <link:label id="lab_wab_PremergerWabtecStockholdersMember_6A74382CE5CDBF6B9E219CE85849093E_terseLabel_en-US" xlink:label="lab_wab_PremergerWabtecStockholdersMember_6A74382CE5CDBF6B9E219CE85849093E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Pre-merger Wabtec Stockholders</link:label>
    <link:label id="lab_wab_PremergerWabtecStockholdersMember_6A74382CE5CDBF6B9E219CE85849093E_label_en-US" xlink:label="lab_wab_PremergerWabtecStockholdersMember_6A74382CE5CDBF6B9E219CE85849093E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Pre-merger Wabtec Stockholders [Member]</link:label>
    <link:label id="lab_wab_PremergerWabtecStockholdersMember_6A74382CE5CDBF6B9E219CE85849093E_documentation_en-US" xlink:label="lab_wab_PremergerWabtecStockholdersMember_6A74382CE5CDBF6B9E219CE85849093E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Pre-merger Wabtec Stockholders [Member]</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_PremergerWabtecStockholdersMember" xlink:label="loc_wab_PremergerWabtecStockholdersMember_6A74382CE5CDBF6B9E219CE85849093E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_PremergerWabtecStockholdersMember_6A74382CE5CDBF6B9E219CE85849093E" xlink:to="lab_wab_PremergerWabtecStockholdersMember_6A74382CE5CDBF6B9E219CE85849093E" xlink:type="arc" />
    <link:label id="lab_wab_GeneralElectricCompanyMember_92DB173932229088DC559CE85849DC56_terseLabel_en-US" xlink:label="lab_wab_GeneralElectricCompanyMember_92DB173932229088DC559CE85849DC56" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">General Electric Company</link:label>
    <link:label id="lab_wab_GeneralElectricCompanyMember_92DB173932229088DC559CE85849DC56_label_en-US" xlink:label="lab_wab_GeneralElectricCompanyMember_92DB173932229088DC559CE85849DC56" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">General Electric Company [Member]</link:label>
    <link:label id="lab_wab_GeneralElectricCompanyMember_92DB173932229088DC559CE85849DC56_documentation_en-US" xlink:label="lab_wab_GeneralElectricCompanyMember_92DB173932229088DC559CE85849DC56" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">General Electric Company [Member]</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_GeneralElectricCompanyMember" xlink:label="loc_wab_GeneralElectricCompanyMember_92DB173932229088DC559CE85849DC56" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_GeneralElectricCompanyMember_92DB173932229088DC559CE85849DC56" xlink:to="lab_wab_GeneralElectricCompanyMember_92DB173932229088DC559CE85849DC56" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessAcquisitionAxis_825B0B42E86AF4ADBE729CE85849A929_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionAxis_825B0B42E86AF4ADBE729CE85849A929" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Business Acquisition [Axis]</link:label>
    <link:label id="lab_us-gaap_BusinessAcquisitionAxis_825B0B42E86AF4ADBE729CE85849A929_label_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionAxis_825B0B42E86AF4ADBE729CE85849A929" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Acquisition [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_825B0B42E86AF4ADBE729CE85849A929" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_825B0B42E86AF4ADBE729CE85849A929" xlink:to="lab_us-gaap_BusinessAcquisitionAxis_825B0B42E86AF4ADBE729CE85849A929" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessAcquisitionAcquireeDomain_DC511C6C4A616C4483D39CE85849B080_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionAcquireeDomain_DC511C6C4A616C4483D39CE85849B080" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Business Acquisition, Acquiree [Domain]</link:label>
    <link:label id="lab_us-gaap_BusinessAcquisitionAcquireeDomain_DC511C6C4A616C4483D39CE85849B080_label_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionAcquireeDomain_DC511C6C4A616C4483D39CE85849B080" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Acquisition, Acquiree [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_DC511C6C4A616C4483D39CE85849B080" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_DC511C6C4A616C4483D39CE85849B080" xlink:to="lab_us-gaap_BusinessAcquisitionAcquireeDomain_DC511C6C4A616C4483D39CE85849B080" xlink:type="arc" />
    <link:label id="lab_wab_GETransportationMember_3191899828DFAE10913E9CE8584AEF6E_terseLabel_en-US" xlink:label="lab_wab_GETransportationMember_3191899828DFAE10913E9CE8584AEF6E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">GE Transportation</link:label>
    <link:label id="lab_wab_GETransportationMember_3191899828DFAE10913E9CE8584AEF6E_label_en-US" xlink:label="lab_wab_GETransportationMember_3191899828DFAE10913E9CE8584AEF6E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">GE Transportation [Member]</link:label>
    <link:label id="lab_wab_GETransportationMember_3191899828DFAE10913E9CE8584AEF6E_documentation_en-US" xlink:label="lab_wab_GETransportationMember_3191899828DFAE10913E9CE8584AEF6E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">GE Transportation [Member]</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_GETransportationMember" xlink:label="loc_wab_GETransportationMember_3191899828DFAE10913E9CE8584AEF6E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_GETransportationMember_3191899828DFAE10913E9CE8584AEF6E" xlink:to="lab_wab_GETransportationMember_3191899828DFAE10913E9CE8584AEF6E" xlink:type="arc" />
    <link:label id="lab_wab_GETBrazilMember_B7E4960B2CE7296912B29CE8584AFBCB_terseLabel_en-US" xlink:label="lab_wab_GETBrazilMember_B7E4960B2CE7296912B29CE8584AFBCB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">GET Brazil</link:label>
    <link:label id="lab_wab_GETBrazilMember_B7E4960B2CE7296912B29CE8584AFBCB_label_en-US" xlink:label="lab_wab_GETBrazilMember_B7E4960B2CE7296912B29CE8584AFBCB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">GET Brazil [Member]</link:label>
    <link:label id="lab_wab_GETBrazilMember_B7E4960B2CE7296912B29CE8584AFBCB_documentation_en-US" xlink:label="lab_wab_GETBrazilMember_B7E4960B2CE7296912B29CE8584AFBCB" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">GET Brazil [Member]</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_GETBrazilMember" xlink:label="loc_wab_GETBrazilMember_B7E4960B2CE7296912B29CE8584AFBCB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_GETBrazilMember_B7E4960B2CE7296912B29CE8584AFBCB" xlink:to="lab_wab_GETBrazilMember_B7E4960B2CE7296912B29CE8584AFBCB" xlink:type="arc" />
    <link:label id="lab_wab_GEandPreMergerHoldersMember_3FE20C9C7AC270F576C39CE8584BF94F_terseLabel_en-US" xlink:label="lab_wab_GEandPreMergerHoldersMember_3FE20C9C7AC270F576C39CE8584BF94F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">GE and Pre-Merger Holders</link:label>
    <link:label id="lab_wab_GEandPreMergerHoldersMember_3FE20C9C7AC270F576C39CE8584BF94F_label_en-US" xlink:label="lab_wab_GEandPreMergerHoldersMember_3FE20C9C7AC270F576C39CE8584BF94F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">GE and Pre-Merger Holders [Member]</link:label>
    <link:label id="lab_wab_GEandPreMergerHoldersMember_3FE20C9C7AC270F576C39CE8584BF94F_documentation_en-US" xlink:label="lab_wab_GEandPreMergerHoldersMember_3FE20C9C7AC270F576C39CE8584BF94F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">GE and Pre-Merger Holders [Member]</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_GEandPreMergerHoldersMember" xlink:label="loc_wab_GEandPreMergerHoldersMember_3FE20C9C7AC270F576C39CE8584BF94F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_GEandPreMergerHoldersMember_3FE20C9C7AC270F576C39CE8584BF94F" xlink:to="lab_wab_GEandPreMergerHoldersMember_3FE20C9C7AC270F576C39CE8584BF94F" xlink:type="arc" />
    <link:label id="lab_us-gaap_StatementClassOfStockAxis_DE397667E4FD7242AE2A9CE8584B8EC0_terseLabel_en-US" xlink:label="lab_us-gaap_StatementClassOfStockAxis_DE397667E4FD7242AE2A9CE8584B8EC0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Class of Stock [Axis]</link:label>
    <link:label id="lab_us-gaap_StatementClassOfStockAxis_DE397667E4FD7242AE2A9CE8584B8EC0_label_en-US" xlink:label="lab_us-gaap_StatementClassOfStockAxis_DE397667E4FD7242AE2A9CE8584B8EC0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Class of Stock [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="loc_us-gaap_StatementClassOfStockAxis_DE397667E4FD7242AE2A9CE8584B8EC0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementClassOfStockAxis_DE397667E4FD7242AE2A9CE8584B8EC0" xlink:to="lab_us-gaap_StatementClassOfStockAxis_DE397667E4FD7242AE2A9CE8584B8EC0" xlink:type="arc" />
    <link:label id="lab_us-gaap_ClassOfStockDomain_40B856C8B2F7A0A2E7DB9CE8584B40AB_terseLabel_en-US" xlink:label="lab_us-gaap_ClassOfStockDomain_40B856C8B2F7A0A2E7DB9CE8584B40AB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Class of Stock [Domain]</link:label>
    <link:label id="lab_us-gaap_ClassOfStockDomain_40B856C8B2F7A0A2E7DB9CE8584B40AB_label_en-US" xlink:label="lab_us-gaap_ClassOfStockDomain_40B856C8B2F7A0A2E7DB9CE8584B40AB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Class of Stock [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_40B856C8B2F7A0A2E7DB9CE8584B40AB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ClassOfStockDomain_40B856C8B2F7A0A2E7DB9CE8584B40AB" xlink:to="lab_us-gaap_ClassOfStockDomain_40B856C8B2F7A0A2E7DB9CE8584B40AB" xlink:type="arc" />
    <link:label id="lab_wab_SpinCoCommonStockMember_9CD86E4A6CE62552797E9CE8584BFE2B_terseLabel_en-US" xlink:label="lab_wab_SpinCoCommonStockMember_9CD86E4A6CE62552797E9CE8584BFE2B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">SpinCo Common Stock</link:label>
    <link:label id="lab_wab_SpinCoCommonStockMember_9CD86E4A6CE62552797E9CE8584BFE2B_label_en-US" xlink:label="lab_wab_SpinCoCommonStockMember_9CD86E4A6CE62552797E9CE8584BFE2B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">SpinCo Common Stock [Member]</link:label>
    <link:label id="lab_wab_SpinCoCommonStockMember_9CD86E4A6CE62552797E9CE8584BFE2B_documentation_en-US" xlink:label="lab_wab_SpinCoCommonStockMember_9CD86E4A6CE62552797E9CE8584BFE2B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">SpinCo Common Stock [Member]</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_SpinCoCommonStockMember" xlink:label="loc_wab_SpinCoCommonStockMember_9CD86E4A6CE62552797E9CE8584BFE2B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_SpinCoCommonStockMember_9CD86E4A6CE62552797E9CE8584BFE2B" xlink:to="lab_wab_SpinCoCommonStockMember_9CD86E4A6CE62552797E9CE8584BFE2B" xlink:type="arc" />
    <link:label id="lab_wab_SpinCoClassAPreferredStockMember_D6977AE4EB41D7EF468C9CE8584B01F6_terseLabel_en-US" xlink:label="lab_wab_SpinCoClassAPreferredStockMember_D6977AE4EB41D7EF468C9CE8584B01F6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">SpinCo Class A Preferred Stock</link:label>
    <link:label id="lab_wab_SpinCoClassAPreferredStockMember_D6977AE4EB41D7EF468C9CE8584B01F6_label_en-US" xlink:label="lab_wab_SpinCoClassAPreferredStockMember_D6977AE4EB41D7EF468C9CE8584B01F6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">SpinCo Class A Preferred Stock [Member]</link:label>
    <link:label id="lab_wab_SpinCoClassAPreferredStockMember_D6977AE4EB41D7EF468C9CE8584B01F6_documentation_en-US" xlink:label="lab_wab_SpinCoClassAPreferredStockMember_D6977AE4EB41D7EF468C9CE8584B01F6" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">SpinCo Class A Preferred Stock [Member]</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_SpinCoClassAPreferredStockMember" xlink:label="loc_wab_SpinCoClassAPreferredStockMember_D6977AE4EB41D7EF468C9CE8584B01F6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_SpinCoClassAPreferredStockMember_D6977AE4EB41D7EF468C9CE8584B01F6" xlink:to="lab_wab_SpinCoClassAPreferredStockMember_D6977AE4EB41D7EF468C9CE8584B01F6" xlink:type="arc" />
    <link:label id="lab_wab_SpinCoClassBPreferredStockMember_09E4D743C6A413CCCEC09CE8584B3CA4_terseLabel_en-US" xlink:label="lab_wab_SpinCoClassBPreferredStockMember_09E4D743C6A413CCCEC09CE8584B3CA4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">SpinCo Class B Preferred Stock</link:label>
    <link:label id="lab_wab_SpinCoClassBPreferredStockMember_09E4D743C6A413CCCEC09CE8584B3CA4_label_en-US" xlink:label="lab_wab_SpinCoClassBPreferredStockMember_09E4D743C6A413CCCEC09CE8584B3CA4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">SpinCo Class B Preferred Stock [Member]</link:label>
    <link:label id="lab_wab_SpinCoClassBPreferredStockMember_09E4D743C6A413CCCEC09CE8584B3CA4_documentation_en-US" xlink:label="lab_wab_SpinCoClassBPreferredStockMember_09E4D743C6A413CCCEC09CE8584B3CA4" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">SpinCo Class B Preferred Stock [Member]</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_SpinCoClassBPreferredStockMember" xlink:label="loc_wab_SpinCoClassBPreferredStockMember_09E4D743C6A413CCCEC09CE8584B3CA4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_SpinCoClassBPreferredStockMember_09E4D743C6A413CCCEC09CE8584B3CA4" xlink:to="lab_wab_SpinCoClassBPreferredStockMember_09E4D743C6A413CCCEC09CE8584B3CA4" xlink:type="arc" />
    <link:label id="lab_us-gaap_ConvertiblePreferredStockMember_DB59E24AF12EF8B7712F9CE8584B45FA_terseLabel_en-US" xlink:label="lab_us-gaap_ConvertiblePreferredStockMember_DB59E24AF12EF8B7712F9CE8584B45FA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Convertible Preferred Stock</link:label>
    <link:label id="lab_us-gaap_ConvertiblePreferredStockMember_DB59E24AF12EF8B7712F9CE8584B45FA_label_en-US" xlink:label="lab_us-gaap_ConvertiblePreferredStockMember_DB59E24AF12EF8B7712F9CE8584B45FA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Convertible Preferred Stock [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ConvertiblePreferredStockMember" xlink:label="loc_us-gaap_ConvertiblePreferredStockMember_DB59E24AF12EF8B7712F9CE8584B45FA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConvertiblePreferredStockMember_DB59E24AF12EF8B7712F9CE8584B45FA" xlink:to="lab_us-gaap_ConvertiblePreferredStockMember_DB59E24AF12EF8B7712F9CE8584B45FA" xlink:type="arc" />
    <link:label id="lab_us-gaap_SeriesAPreferredStockMember_F57ED9CED8918FD531089CE8584BEC11_terseLabel_en-US" xlink:label="lab_us-gaap_SeriesAPreferredStockMember_F57ED9CED8918FD531089CE8584BEC11" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Series A Preferred Stock</link:label>
    <link:label id="lab_us-gaap_SeriesAPreferredStockMember_F57ED9CED8918FD531089CE8584BEC11_label_en-US" xlink:label="lab_us-gaap_SeriesAPreferredStockMember_F57ED9CED8918FD531089CE8584BEC11" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Series A Preferred Stock [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SeriesAPreferredStockMember" xlink:label="loc_us-gaap_SeriesAPreferredStockMember_F57ED9CED8918FD531089CE8584BEC11" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SeriesAPreferredStockMember_F57ED9CED8918FD531089CE8584BEC11" xlink:to="lab_us-gaap_SeriesAPreferredStockMember_F57ED9CED8918FD531089CE8584BEC11" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommonStockMember_293756A12EC1F8D950BE9CE8584BC1D8_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockMember_293756A12EC1F8D950BE9CE8584BC1D8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Common Stock</link:label>
    <link:label id="lab_us-gaap_CommonStockMember_293756A12EC1F8D950BE9CE8584BC1D8_label_en-US" xlink:label="lab_us-gaap_CommonStockMember_293756A12EC1F8D950BE9CE8584BC1D8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Common Stock [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommonStockMember" xlink:label="loc_us-gaap_CommonStockMember_293756A12EC1F8D950BE9CE8584BC1D8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockMember_293756A12EC1F8D950BE9CE8584BC1D8" xlink:to="lab_us-gaap_CommonStockMember_293756A12EC1F8D950BE9CE8584BC1D8" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessAcquisitionLineItems_D856C07DAB454F981B549CE8584BFD05_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionLineItems_D856C07DAB454F981B549CE8584BFD05" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Business Acquisition [Line Items]</link:label>
    <link:label id="lab_us-gaap_BusinessAcquisitionLineItems_D856C07DAB454F981B549CE8584BFD05_label_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionLineItems_D856C07DAB454F981B549CE8584BFD05" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Acquisition [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionLineItems" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_D856C07DAB454F981B549CE8584BFD05" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_D856C07DAB454F981B549CE8584BFD05" xlink:to="lab_us-gaap_BusinessAcquisitionLineItems_D856C07DAB454F981B549CE8584BFD05" xlink:type="arc" />
    <link:label id="lab_wab_BusinessCombinationConsiderationTransferredCertainIdentifiableAssetsofAcquired_482C4C998922C7BF8C5A9CE8584B4E63_terseLabel_en-US" xlink:label="lab_wab_BusinessCombinationConsiderationTransferredCertainIdentifiableAssetsofAcquired_482C4C998922C7BF8C5A9CE8584B4E63" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Consideration transferred</link:label>
    <link:label id="lab_wab_BusinessCombinationConsiderationTransferredCertainIdentifiableAssetsofAcquired_482C4C998922C7BF8C5A9CE8584B4E63_label_en-US" xlink:label="lab_wab_BusinessCombinationConsiderationTransferredCertainIdentifiableAssetsofAcquired_482C4C998922C7BF8C5A9CE8584B4E63" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Combination, Consideration Transferred, Certain Identifiable Assets of Acquired</link:label>
    <link:label id="lab_wab_BusinessCombinationConsiderationTransferredCertainIdentifiableAssetsofAcquired_482C4C998922C7BF8C5A9CE8584B4E63_documentation_en-US" xlink:label="lab_wab_BusinessCombinationConsiderationTransferredCertainIdentifiableAssetsofAcquired_482C4C998922C7BF8C5A9CE8584B4E63" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Business Combination, Consideration Transferred, Certain Identifiable Assets of Acquired</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_BusinessCombinationConsiderationTransferredCertainIdentifiableAssetsofAcquired" xlink:label="loc_wab_BusinessCombinationConsiderationTransferredCertainIdentifiableAssetsofAcquired_482C4C998922C7BF8C5A9CE8584B4E63" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_BusinessCombinationConsiderationTransferredCertainIdentifiableAssetsofAcquired_482C4C998922C7BF8C5A9CE8584B4E63" xlink:to="lab_wab_BusinessCombinationConsiderationTransferredCertainIdentifiableAssetsofAcquired_482C4C998922C7BF8C5A9CE8584B4E63" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommonStockSharesOutstanding_9003ACDD464FA802DEB89CE8584BD298_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockSharesOutstanding_9003ACDD464FA802DEB89CE8584BD298" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Common stock, shares outstanding (in shares)</link:label>
    <link:label id="lab_us-gaap_CommonStockSharesOutstanding_9003ACDD464FA802DEB89CE8584BD298_label_en-US" xlink:label="lab_us-gaap_CommonStockSharesOutstanding_9003ACDD464FA802DEB89CE8584BD298" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Common Stock, Shares, Outstanding</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommonStockSharesOutstanding" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_9003ACDD464FA802DEB89CE8584BD298" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockSharesOutstanding_9003ACDD464FA802DEB89CE8584BD298" xlink:to="lab_us-gaap_CommonStockSharesOutstanding_9003ACDD464FA802DEB89CE8584BD298" xlink:type="arc" />
    <link:label id="lab_us-gaap_PreferredStockSharesOutstanding_08D15729B4C7FBCF1B169CE8584BE051_terseLabel_en-US" xlink:label="lab_us-gaap_PreferredStockSharesOutstanding_08D15729B4C7FBCF1B169CE8584BE051" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Preferred stock, shares outstanding (in shares)</link:label>
    <link:label id="lab_us-gaap_PreferredStockSharesOutstanding_08D15729B4C7FBCF1B169CE8584BE051_label_en-US" xlink:label="lab_us-gaap_PreferredStockSharesOutstanding_08D15729B4C7FBCF1B169CE8584BE051" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Preferred Stock, Shares Outstanding</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PreferredStockSharesOutstanding" xlink:label="loc_us-gaap_PreferredStockSharesOutstanding_08D15729B4C7FBCF1B169CE8584BE051" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PreferredStockSharesOutstanding_08D15729B4C7FBCF1B169CE8584BE051" xlink:to="lab_us-gaap_PreferredStockSharesOutstanding_08D15729B4C7FBCF1B169CE8584BE051" xlink:type="arc" />
    <link:label id="lab_wab_BusinessCombinationPercentageofCommonSharesOutstanding_367957CCE9CFED12D8E89CE8584B14B8_terseLabel_en-US" xlink:label="lab_wab_BusinessCombinationPercentageofCommonSharesOutstanding_367957CCE9CFED12D8E89CE8584B14B8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Percentage of common shares outstanding</link:label>
    <link:label id="lab_wab_BusinessCombinationPercentageofCommonSharesOutstanding_367957CCE9CFED12D8E89CE8584B14B8_label_en-US" xlink:label="lab_wab_BusinessCombinationPercentageofCommonSharesOutstanding_367957CCE9CFED12D8E89CE8584B14B8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Combination, Percentage of Common Shares, Outstanding</link:label>
    <link:label id="lab_wab_BusinessCombinationPercentageofCommonSharesOutstanding_367957CCE9CFED12D8E89CE8584B14B8_documentation_en-US" xlink:label="lab_wab_BusinessCombinationPercentageofCommonSharesOutstanding_367957CCE9CFED12D8E89CE8584B14B8" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Business Combination, Percentage of Common Shares, Outstanding</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_BusinessCombinationPercentageofCommonSharesOutstanding" xlink:label="loc_wab_BusinessCombinationPercentageofCommonSharesOutstanding_367957CCE9CFED12D8E89CE8584B14B8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_BusinessCombinationPercentageofCommonSharesOutstanding_367957CCE9CFED12D8E89CE8584B14B8" xlink:to="lab_wab_BusinessCombinationPercentageofCommonSharesOutstanding_367957CCE9CFED12D8E89CE8584B14B8" xlink:type="arc" />
    <link:label id="lab_us-gaap_PaymentsToAcquireBusinessesGross_165B2817F9F2A7201DB79CE8584B1943_terseLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireBusinessesGross_165B2817F9F2A7201DB79CE8584B1943" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Payments to Acquire Businesses, Gross</link:label>
    <link:label id="lab_us-gaap_PaymentsToAcquireBusinessesGross_165B2817F9F2A7201DB79CE8584B1943_label_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireBusinessesGross_165B2817F9F2A7201DB79CE8584B1943" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments to Acquire Businesses, Gross</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsToAcquireBusinessesGross" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesGross_165B2817F9F2A7201DB79CE8584B1943" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsToAcquireBusinessesGross_165B2817F9F2A7201DB79CE8584B1943" xlink:to="lab_us-gaap_PaymentsToAcquireBusinessesGross_165B2817F9F2A7201DB79CE8584B1943" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued_9F317AAF7FF8303A11F49CE8584B4A02_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued_9F317AAF7FF8303A11F49CE8584B4A02" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Shares issuable (in shares)</link:label>
    <link:label id="lab_us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued_9F317AAF7FF8303A11F49CE8584B4A02_label_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued_9F317AAF7FF8303A11F49CE8584B4A02" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Acquisition, Equity Interest Issued or Issuable, Number of Shares</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued" xlink:label="loc_us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued_9F317AAF7FF8303A11F49CE8584B4A02" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued_9F317AAF7FF8303A11F49CE8584B4A02" xlink:to="lab_us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued_9F317AAF7FF8303A11F49CE8584B4A02" xlink:type="arc" />
    <link:label id="lab_wab_BusinessCombinationPercentageofOutstandingSharesTransferred_9D301B849F5A5293C1849CE8584B587F_terseLabel_en-US" xlink:label="lab_wab_BusinessCombinationPercentageofOutstandingSharesTransferred_9D301B849F5A5293C1849CE8584B587F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Percentage of outstanding shares transferred</link:label>
    <link:label id="lab_wab_BusinessCombinationPercentageofOutstandingSharesTransferred_9D301B849F5A5293C1849CE8584B587F_label_en-US" xlink:label="lab_wab_BusinessCombinationPercentageofOutstandingSharesTransferred_9D301B849F5A5293C1849CE8584B587F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Combination, Percentage of Outstanding Shares Transferred</link:label>
    <link:label id="lab_wab_BusinessCombinationPercentageofOutstandingSharesTransferred_9D301B849F5A5293C1849CE8584B587F_documentation_en-US" xlink:label="lab_wab_BusinessCombinationPercentageofOutstandingSharesTransferred_9D301B849F5A5293C1849CE8584B587F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Business Combination, Percentage of Outstanding Shares Transferred</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_BusinessCombinationPercentageofOutstandingSharesTransferred" xlink:label="loc_wab_BusinessCombinationPercentageofOutstandingSharesTransferred_9D301B849F5A5293C1849CE8584B587F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_BusinessCombinationPercentageofOutstandingSharesTransferred_9D301B849F5A5293C1849CE8584B587F" xlink:to="lab_wab_BusinessCombinationPercentageofOutstandingSharesTransferred_9D301B849F5A5293C1849CE8584B587F" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessCombinationConsiderationTransferred1_3FDA836B5907FDBD4BC49CE8584B2D42_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessCombinationConsiderationTransferred1_3FDA836B5907FDBD4BC49CE8584B2D42" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Business combination, consideration transferred</link:label>
    <link:label id="lab_us-gaap_BusinessCombinationConsiderationTransferred1_3FDA836B5907FDBD4BC49CE8584B2D42_label_en-US" xlink:label="lab_us-gaap_BusinessCombinationConsiderationTransferred1_3FDA836B5907FDBD4BC49CE8584B2D42" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Combination, Consideration Transferred</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationConsiderationTransferred1" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferred1_3FDA836B5907FDBD4BC49CE8584B2D42" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessCombinationConsiderationTransferred1_3FDA836B5907FDBD4BC49CE8584B2D42" xlink:to="lab_us-gaap_BusinessCombinationConsiderationTransferred1_3FDA836B5907FDBD4BC49CE8584B2D42" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommonStockSharesIssued_6846CA226F4E481E9D759CE8584B53ED_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockSharesIssued_6846CA226F4E481E9D759CE8584B53ED" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Common stock, shares issued (in shares)</link:label>
    <link:label id="lab_us-gaap_CommonStockSharesIssued_6846CA226F4E481E9D759CE8584B53ED_label_en-US" xlink:label="lab_us-gaap_CommonStockSharesIssued_6846CA226F4E481E9D759CE8584B53ED" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Common Stock, Shares, Issued</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommonStockSharesIssued" xlink:label="loc_us-gaap_CommonStockSharesIssued_6846CA226F4E481E9D759CE8584B53ED" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockSharesIssued_6846CA226F4E481E9D759CE8584B53ED" xlink:to="lab_us-gaap_CommonStockSharesIssued_6846CA226F4E481E9D759CE8584B53ED" xlink:type="arc" />
    <link:label id="lab_us-gaap_PreferredStockSharesIssued_8709CB970939EF54D2989CE8584B295C_terseLabel_en-US" xlink:label="lab_us-gaap_PreferredStockSharesIssued_8709CB970939EF54D2989CE8584B295C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Preferred stock, shares issued (in shares)</link:label>
    <link:label id="lab_us-gaap_PreferredStockSharesIssued_8709CB970939EF54D2989CE8584B295C_label_en-US" xlink:label="lab_us-gaap_PreferredStockSharesIssued_8709CB970939EF54D2989CE8584B295C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Preferred Stock, Shares Issued</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PreferredStockSharesIssued" xlink:label="loc_us-gaap_PreferredStockSharesIssued_8709CB970939EF54D2989CE8584B295C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PreferredStockSharesIssued_8709CB970939EF54D2989CE8584B295C" xlink:to="lab_us-gaap_PreferredStockSharesIssued_8709CB970939EF54D2989CE8584B295C" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessAcquisitionSharePrice_BA4EA8E74FD5C024BA8A9CE8584B0D74_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionSharePrice_BA4EA8E74FD5C024BA8A9CE8584B0D74" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Closing share price (in USD per share)</link:label>
    <link:label id="lab_us-gaap_BusinessAcquisitionSharePrice_BA4EA8E74FD5C024BA8A9CE8584B0D74_label_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionSharePrice_BA4EA8E74FD5C024BA8A9CE8584B0D74" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Acquisition, Share Price</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionSharePrice" xlink:label="loc_us-gaap_BusinessAcquisitionSharePrice_BA4EA8E74FD5C024BA8A9CE8584B0D74" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessAcquisitionSharePrice_BA4EA8E74FD5C024BA8A9CE8584B0D74" xlink:to="lab_us-gaap_BusinessAcquisitionSharePrice_BA4EA8E74FD5C024BA8A9CE8584B0D74" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue_BAD55FBBE28FBF63EA119CE8584F4CD7_verboseLabel_en-US" xlink:label="lab_us-gaap_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue_BAD55FBBE28FBF63EA119CE8584F4CD7" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Noncontrolling interest acquired</link:label>
    <link:label id="lab_us-gaap_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue_BAD55FBBE28FBF63EA119CE8584F4CD7_label_en-US" xlink:label="lab_us-gaap_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue_BAD55FBBE28FBF63EA119CE8584F4CD7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue" xlink:label="loc_us-gaap_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue_BAD55FBBE28FBF63EA119CE8584F4CD7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue_BAD55FBBE28FBF63EA119CE8584F4CD7" xlink:to="lab_us-gaap_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue_BAD55FBBE28FBF63EA119CE8584F4CD7" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual_6328F4CB4CDAF72843369CE8584FBC9F_verboseLabel_en-US" xlink:label="lab_us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual_6328F4CB4CDAF72843369CE8584FBC9F" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Revenues</link:label>
    <link:label id="lab_us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual_6328F4CB4CDAF72843369CE8584FBC9F_label_en-US" xlink:label="lab_us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual_6328F4CB4CDAF72843369CE8584FBC9F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual" xlink:label="loc_us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual_6328F4CB4CDAF72843369CE8584FBC9F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual_6328F4CB4CDAF72843369CE8584FBC9F" xlink:to="lab_us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual_6328F4CB4CDAF72843369CE8584FBC9F" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual_6D594E01CF883AF447BF9CE8584FCB61_verboseLabel_en-US" xlink:label="lab_us-gaap_BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual_6D594E01CF883AF447BF9CE8584FCB61" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Operating income</link:label>
    <link:label id="lab_us-gaap_BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual_6D594E01CF883AF447BF9CE8584FCB61_label_en-US" xlink:label="lab_us-gaap_BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual_6D594E01CF883AF447BF9CE8584FCB61" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual" xlink:label="loc_us-gaap_BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual_6D594E01CF883AF447BF9CE8584FCB61" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual_6D594E01CF883AF447BF9CE8584FCB61" xlink:to="lab_us-gaap_BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual_6D594E01CF883AF447BF9CE8584FCB61" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessCombinationAcquisitionRelatedCosts_FD0657D9E560BC824D239CE8584F89F1_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessCombinationAcquisitionRelatedCosts_FD0657D9E560BC824D239CE8584F89F1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Acquisition related costs</link:label>
    <link:label id="lab_us-gaap_BusinessCombinationAcquisitionRelatedCosts_FD0657D9E560BC824D239CE8584F89F1_label_en-US" xlink:label="lab_us-gaap_BusinessCombinationAcquisitionRelatedCosts_FD0657D9E560BC824D239CE8584F89F1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Combination, Acquisition Related Costs</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationAcquisitionRelatedCosts" xlink:label="loc_us-gaap_BusinessCombinationAcquisitionRelatedCosts_FD0657D9E560BC824D239CE8584F89F1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessCombinationAcquisitionRelatedCosts_FD0657D9E560BC824D239CE8584F89F1" xlink:to="lab_us-gaap_BusinessCombinationAcquisitionRelatedCosts_FD0657D9E560BC824D239CE8584F89F1" xlink:type="arc" />
    <link:label id="lab_us-gaap_DerivativeTable_F0363311D7661BE07D00C5674A05231B_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeTable_F0363311D7661BE07D00C5674A05231B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Derivative [Table]</link:label>
    <link:label id="lab_us-gaap_DerivativeTable_F0363311D7661BE07D00C5674A05231B_label_en-US" xlink:label="lab_us-gaap_DerivativeTable_F0363311D7661BE07D00C5674A05231B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeTable" xlink:label="loc_us-gaap_DerivativeTable_F0363311D7661BE07D00C5674A05231B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeTable_F0363311D7661BE07D00C5674A05231B" xlink:to="lab_us-gaap_DerivativeTable_F0363311D7661BE07D00C5674A05231B" xlink:type="arc" />
    <link:label id="lab_us-gaap_HedgingDesignationAxis_127D7CDD48FEA7B14C71C5674A052741_terseLabel_en-US" xlink:label="lab_us-gaap_HedgingDesignationAxis_127D7CDD48FEA7B14C71C5674A052741" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Hedging Designation [Axis]</link:label>
    <link:label id="lab_us-gaap_HedgingDesignationAxis_127D7CDD48FEA7B14C71C5674A052741_label_en-US" xlink:label="lab_us-gaap_HedgingDesignationAxis_127D7CDD48FEA7B14C71C5674A052741" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Hedging Designation [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_HedgingDesignationAxis" xlink:label="loc_us-gaap_HedgingDesignationAxis_127D7CDD48FEA7B14C71C5674A052741" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_HedgingDesignationAxis_127D7CDD48FEA7B14C71C5674A052741" xlink:to="lab_us-gaap_HedgingDesignationAxis_127D7CDD48FEA7B14C71C5674A052741" xlink:type="arc" />
    <link:label id="lab_us-gaap_HedgingDesignationDomain_6658A81558A175871EEEC5674A052050_terseLabel_en-US" xlink:label="lab_us-gaap_HedgingDesignationDomain_6658A81558A175871EEEC5674A052050" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Hedging Designation [Domain]</link:label>
    <link:label id="lab_us-gaap_HedgingDesignationDomain_6658A81558A175871EEEC5674A052050_label_en-US" xlink:label="lab_us-gaap_HedgingDesignationDomain_6658A81558A175871EEEC5674A052050" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Hedging Designation [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_HedgingDesignationDomain" xlink:label="loc_us-gaap_HedgingDesignationDomain_6658A81558A175871EEEC5674A052050" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_HedgingDesignationDomain_6658A81558A175871EEEC5674A052050" xlink:to="lab_us-gaap_HedgingDesignationDomain_6658A81558A175871EEEC5674A052050" xlink:type="arc" />
    <link:label id="lab_us-gaap_DesignatedAsHedgingInstrumentMember_9BBA24B37817B7733818C5674A05CC97_terseLabel_en-US" xlink:label="lab_us-gaap_DesignatedAsHedgingInstrumentMember_9BBA24B37817B7733818C5674A05CC97" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Designated</link:label>
    <link:label id="lab_us-gaap_DesignatedAsHedgingInstrumentMember_9BBA24B37817B7733818C5674A05CC97_label_en-US" xlink:label="lab_us-gaap_DesignatedAsHedgingInstrumentMember_9BBA24B37817B7733818C5674A05CC97" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Designated as Hedging Instrument [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DesignatedAsHedgingInstrumentMember" xlink:label="loc_us-gaap_DesignatedAsHedgingInstrumentMember_9BBA24B37817B7733818C5674A05CC97" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DesignatedAsHedgingInstrumentMember_9BBA24B37817B7733818C5674A05CC97" xlink:to="lab_us-gaap_DesignatedAsHedgingInstrumentMember_9BBA24B37817B7733818C5674A05CC97" xlink:type="arc" />
    <link:label id="lab_us-gaap_NondesignatedMember_A8E4C420BD10220AB584C5674A057F74_terseLabel_en-US" xlink:label="lab_us-gaap_NondesignatedMember_A8E4C420BD10220AB584C5674A057F74" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Non-Designated</link:label>
    <link:label id="lab_us-gaap_NondesignatedMember_A8E4C420BD10220AB584C5674A057F74_label_en-US" xlink:label="lab_us-gaap_NondesignatedMember_A8E4C420BD10220AB584C5674A057F74" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Not Designated as Hedging Instrument [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NondesignatedMember" xlink:label="loc_us-gaap_NondesignatedMember_A8E4C420BD10220AB584C5674A057F74" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NondesignatedMember_A8E4C420BD10220AB584C5674A057F74" xlink:to="lab_us-gaap_NondesignatedMember_A8E4C420BD10220AB584C5674A057F74" xlink:type="arc" />
    <link:label id="lab_us-gaap_BalanceSheetLocationAxis_57A22B76A7D4E1B31689C5674A05A8CC_terseLabel_en-US" xlink:label="lab_us-gaap_BalanceSheetLocationAxis_57A22B76A7D4E1B31689C5674A05A8CC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Balance Sheet Location [Axis]</link:label>
    <link:label id="lab_us-gaap_BalanceSheetLocationAxis_57A22B76A7D4E1B31689C5674A05A8CC_label_en-US" xlink:label="lab_us-gaap_BalanceSheetLocationAxis_57A22B76A7D4E1B31689C5674A05A8CC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Balance Sheet Location [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BalanceSheetLocationAxis" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_57A22B76A7D4E1B31689C5674A05A8CC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_57A22B76A7D4E1B31689C5674A05A8CC" xlink:to="lab_us-gaap_BalanceSheetLocationAxis_57A22B76A7D4E1B31689C5674A05A8CC" xlink:type="arc" />
    <link:label id="lab_us-gaap_BalanceSheetLocationDomain_722AB8B7AFCB8D6316F9C5674A05BEF7_terseLabel_en-US" xlink:label="lab_us-gaap_BalanceSheetLocationDomain_722AB8B7AFCB8D6316F9C5674A05BEF7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Balance Sheet Location [Domain]</link:label>
    <link:label id="lab_us-gaap_BalanceSheetLocationDomain_722AB8B7AFCB8D6316F9C5674A05BEF7_label_en-US" xlink:label="lab_us-gaap_BalanceSheetLocationDomain_722AB8B7AFCB8D6316F9C5674A05BEF7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Balance Sheet Location [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_722AB8B7AFCB8D6316F9C5674A05BEF7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_722AB8B7AFCB8D6316F9C5674A05BEF7" xlink:to="lab_us-gaap_BalanceSheetLocationDomain_722AB8B7AFCB8D6316F9C5674A05BEF7" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherCurrentAssetsMember_5E9470991D0B3D3FFA65C5674A054596_terseLabel_en-US" xlink:label="lab_us-gaap_OtherCurrentAssetsMember_5E9470991D0B3D3FFA65C5674A054596" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other current assets</link:label>
    <link:label id="lab_us-gaap_OtherCurrentAssetsMember_5E9470991D0B3D3FFA65C5674A054596_label_en-US" xlink:label="lab_us-gaap_OtherCurrentAssetsMember_5E9470991D0B3D3FFA65C5674A054596" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Current Assets [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherCurrentAssetsMember" xlink:label="loc_us-gaap_OtherCurrentAssetsMember_5E9470991D0B3D3FFA65C5674A054596" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherCurrentAssetsMember_5E9470991D0B3D3FFA65C5674A054596" xlink:to="lab_us-gaap_OtherCurrentAssetsMember_5E9470991D0B3D3FFA65C5674A054596" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherCurrentLiabilitiesMember_AEEA660D642B2CEB4E02C5674A0523F4_terseLabel_en-US" xlink:label="lab_us-gaap_OtherCurrentLiabilitiesMember_AEEA660D642B2CEB4E02C5674A0523F4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other current liabilities</link:label>
    <link:label id="lab_us-gaap_OtherCurrentLiabilitiesMember_AEEA660D642B2CEB4E02C5674A0523F4_label_en-US" xlink:label="lab_us-gaap_OtherCurrentLiabilitiesMember_AEEA660D642B2CEB4E02C5674A0523F4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Current Liabilities [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherCurrentLiabilitiesMember" xlink:label="loc_us-gaap_OtherCurrentLiabilitiesMember_AEEA660D642B2CEB4E02C5674A0523F4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherCurrentLiabilitiesMember_AEEA660D642B2CEB4E02C5674A0523F4" xlink:to="lab_us-gaap_OtherCurrentLiabilitiesMember_AEEA660D642B2CEB4E02C5674A0523F4" xlink:type="arc" />
    <link:label id="lab_us-gaap_DerivativeLineItems_7C7928AB7646E0FE3C49C5674A05FD0E_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeLineItems_7C7928AB7646E0FE3C49C5674A05FD0E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Derivative [Line Items]</link:label>
    <link:label id="lab_us-gaap_DerivativeLineItems_7C7928AB7646E0FE3C49C5674A05FD0E_label_en-US" xlink:label="lab_us-gaap_DerivativeLineItems_7C7928AB7646E0FE3C49C5674A05FD0E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeLineItems" xlink:label="loc_us-gaap_DerivativeLineItems_7C7928AB7646E0FE3C49C5674A05FD0E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeLineItems_7C7928AB7646E0FE3C49C5674A05FD0E" xlink:to="lab_us-gaap_DerivativeLineItems_7C7928AB7646E0FE3C49C5674A05FD0E" xlink:type="arc" />
    <link:label id="lab_invest_DerivativeNotionalAmount_5A41E8B3F2945FCD7833C5674A0591AD_terseLabel_en-US" xlink:label="lab_invest_DerivativeNotionalAmount_5A41E8B3F2945FCD7833C5674A0591AD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Gross notional amount</link:label>
    <link:label id="lab_invest_DerivativeNotionalAmount_5A41E8B3F2945FCD7833C5674A0591AD_label_en-US" xlink:label="lab_invest_DerivativeNotionalAmount_5A41E8B3F2945FCD7833C5674A0591AD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative, Notional Amount</link:label>
    <link:loc xlink:href="http://xbrl.sec.gov/invest/2013/invest-2013-01-31.xsd#invest_DerivativeNotionalAmount" xlink:label="loc_invest_DerivativeNotionalAmount_5A41E8B3F2945FCD7833C5674A0591AD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_invest_DerivativeNotionalAmount_5A41E8B3F2945FCD7833C5674A0591AD" xlink:to="lab_invest_DerivativeNotionalAmount_5A41E8B3F2945FCD7833C5674A0591AD" xlink:type="arc" />
    <link:label id="lab_us-gaap_DerivativeFairValueOfDerivativeAsset_B1C617AD99B09C1C2337C5674A0510CF_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeFairValueOfDerivativeAsset_B1C617AD99B09C1C2337C5674A0510CF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Derivative asset fair value</link:label>
    <link:label id="lab_us-gaap_DerivativeFairValueOfDerivativeAsset_B1C617AD99B09C1C2337C5674A0510CF_label_en-US" xlink:label="lab_us-gaap_DerivativeFairValueOfDerivativeAsset_B1C617AD99B09C1C2337C5674A0510CF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative Asset, Fair Value, Gross Asset</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeAsset" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeAsset_B1C617AD99B09C1C2337C5674A0510CF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeFairValueOfDerivativeAsset_B1C617AD99B09C1C2337C5674A0510CF" xlink:to="lab_us-gaap_DerivativeFairValueOfDerivativeAsset_B1C617AD99B09C1C2337C5674A0510CF" xlink:type="arc" />
    <link:label id="lab_us-gaap_DerivativeFairValueOfDerivativeLiability_8D68BE9BFB86325E8007C5674A05EB53_negatedLabel_en-US" xlink:label="lab_us-gaap_DerivativeFairValueOfDerivativeLiability_8D68BE9BFB86325E8007C5674A05EB53" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Liabilities at fair value</link:label>
    <link:label id="lab_us-gaap_DerivativeFairValueOfDerivativeLiability_8D68BE9BFB86325E8007C5674A05EB53_label_en-US" xlink:label="lab_us-gaap_DerivativeFairValueOfDerivativeLiability_8D68BE9BFB86325E8007C5674A05EB53" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative Liability, Fair Value, Gross Liability</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeLiability" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeLiability_8D68BE9BFB86325E8007C5674A05EB53" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeFairValueOfDerivativeLiability_8D68BE9BFB86325E8007C5674A05EB53" xlink:to="lab_us-gaap_DerivativeFairValueOfDerivativeLiability_8D68BE9BFB86325E8007C5674A05EB53" xlink:type="arc" />
    <link:label id="lab_us-gaap_DerivativeFairValueOfDerivativeNet_CCBEAA3B19148DA37C3EC5674A05858C_totalLabel_en-US" xlink:label="lab_us-gaap_DerivativeFairValueOfDerivativeNet_CCBEAA3B19148DA37C3EC5674A05858C" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total</link:label>
    <link:label id="lab_us-gaap_DerivativeFairValueOfDerivativeNet_CCBEAA3B19148DA37C3EC5674A05858C_label_en-US" xlink:label="lab_us-gaap_DerivativeFairValueOfDerivativeNet_CCBEAA3B19148DA37C3EC5674A05858C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative, Fair Value, Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeNet" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeNet_CCBEAA3B19148DA37C3EC5674A05858C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeFairValueOfDerivativeNet_CCBEAA3B19148DA37C3EC5674A05858C" xlink:to="lab_us-gaap_DerivativeFairValueOfDerivativeNet_CCBEAA3B19148DA37C3EC5674A05858C" xlink:type="arc" />
    <link:label id="lab_srt_ScheduleOfCondensedFinancialStatementsTable_94AA293070D2348391EC7536A4DE6ED8_terseLabel_en-US" xlink:label="lab_srt_ScheduleOfCondensedFinancialStatementsTable_94AA293070D2348391EC7536A4DE6ED8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Condensed Financial Statements [Table]</link:label>
    <link:label id="lab_srt_ScheduleOfCondensedFinancialStatementsTable_94AA293070D2348391EC7536A4DE6ED8_label_en-US" xlink:label="lab_srt_ScheduleOfCondensedFinancialStatementsTable_94AA293070D2348391EC7536A4DE6ED8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Condensed Financial Statements [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ScheduleOfCondensedFinancialStatementsTable" xlink:label="loc_srt_ScheduleOfCondensedFinancialStatementsTable_94AA293070D2348391EC7536A4DE6ED8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_ScheduleOfCondensedFinancialStatementsTable_94AA293070D2348391EC7536A4DE6ED8" xlink:to="lab_srt_ScheduleOfCondensedFinancialStatementsTable_94AA293070D2348391EC7536A4DE6ED8" xlink:type="arc" />
    <link:label id="lab_srt_ConsolidatedEntitiesAxis_6729E197AE1E9A50AFAD7536A4DEEB29_terseLabel_en-US" xlink:label="lab_srt_ConsolidatedEntitiesAxis_6729E197AE1E9A50AFAD7536A4DEEB29" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Consolidated Entities [Axis]</link:label>
    <link:label id="lab_srt_ConsolidatedEntitiesAxis_6729E197AE1E9A50AFAD7536A4DEEB29_label_en-US" xlink:label="lab_srt_ConsolidatedEntitiesAxis_6729E197AE1E9A50AFAD7536A4DEEB29" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Consolidated Entities [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidatedEntitiesAxis" xlink:label="loc_srt_ConsolidatedEntitiesAxis_6729E197AE1E9A50AFAD7536A4DEEB29" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_ConsolidatedEntitiesAxis_6729E197AE1E9A50AFAD7536A4DEEB29" xlink:to="lab_srt_ConsolidatedEntitiesAxis_6729E197AE1E9A50AFAD7536A4DEEB29" xlink:type="arc" />
    <link:label id="lab_srt_ConsolidatedEntitiesDomain_9AE32A855EBBC604A9277536A4DE3361_terseLabel_en-US" xlink:label="lab_srt_ConsolidatedEntitiesDomain_9AE32A855EBBC604A9277536A4DE3361" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Consolidated Entities [Domain]</link:label>
    <link:label id="lab_srt_ConsolidatedEntitiesDomain_9AE32A855EBBC604A9277536A4DE3361_label_en-US" xlink:label="lab_srt_ConsolidatedEntitiesDomain_9AE32A855EBBC604A9277536A4DE3361" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Consolidated Entities [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidatedEntitiesDomain" xlink:label="loc_srt_ConsolidatedEntitiesDomain_9AE32A855EBBC604A9277536A4DE3361" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_ConsolidatedEntitiesDomain_9AE32A855EBBC604A9277536A4DE3361" xlink:to="lab_srt_ConsolidatedEntitiesDomain_9AE32A855EBBC604A9277536A4DE3361" xlink:type="arc" />
    <link:label id="lab_srt_ParentCompanyMember_44B7D2D43646219C33DE7536A4DE3B2C_terseLabel_en-US" xlink:label="lab_srt_ParentCompanyMember_44B7D2D43646219C33DE7536A4DE3B2C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Parent</link:label>
    <link:label id="lab_srt_ParentCompanyMember_44B7D2D43646219C33DE7536A4DE3B2C_label_en-US" xlink:label="lab_srt_ParentCompanyMember_44B7D2D43646219C33DE7536A4DE3B2C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Parent Company [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ParentCompanyMember" xlink:label="loc_srt_ParentCompanyMember_44B7D2D43646219C33DE7536A4DE3B2C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_ParentCompanyMember_44B7D2D43646219C33DE7536A4DE3B2C" xlink:to="lab_srt_ParentCompanyMember_44B7D2D43646219C33DE7536A4DE3B2C" xlink:type="arc" />
    <link:label id="lab_srt_GuarantorSubsidiariesMember_482401FCD02CFDD314D77536A4DEA0A4_terseLabel_en-US" xlink:label="lab_srt_GuarantorSubsidiariesMember_482401FCD02CFDD314D77536A4DEA0A4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Guarantors</link:label>
    <link:label id="lab_srt_GuarantorSubsidiariesMember_482401FCD02CFDD314D77536A4DEA0A4_label_en-US" xlink:label="lab_srt_GuarantorSubsidiariesMember_482401FCD02CFDD314D77536A4DEA0A4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Guarantor Subsidiaries [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_GuarantorSubsidiariesMember" xlink:label="loc_srt_GuarantorSubsidiariesMember_482401FCD02CFDD314D77536A4DEA0A4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_GuarantorSubsidiariesMember_482401FCD02CFDD314D77536A4DEA0A4" xlink:to="lab_srt_GuarantorSubsidiariesMember_482401FCD02CFDD314D77536A4DEA0A4" xlink:type="arc" />
    <link:label id="lab_srt_NonGuarantorSubsidiariesMember_F4D84B1152B55E35C2867536A4DE891C_terseLabel_en-US" xlink:label="lab_srt_NonGuarantorSubsidiariesMember_F4D84B1152B55E35C2867536A4DE891C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Non-Guarantors</link:label>
    <link:label id="lab_srt_NonGuarantorSubsidiariesMember_F4D84B1152B55E35C2867536A4DE891C_label_en-US" xlink:label="lab_srt_NonGuarantorSubsidiariesMember_F4D84B1152B55E35C2867536A4DE891C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Non-Guarantor Subsidiaries [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_NonGuarantorSubsidiariesMember" xlink:label="loc_srt_NonGuarantorSubsidiariesMember_F4D84B1152B55E35C2867536A4DE891C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_NonGuarantorSubsidiariesMember_F4D84B1152B55E35C2867536A4DE891C" xlink:to="lab_srt_NonGuarantorSubsidiariesMember_F4D84B1152B55E35C2867536A4DE891C" xlink:type="arc" />
    <link:label id="lab_srt_ReportableLegalEntitiesMember_6B932930A0646D3AA4677536A4DEA570_terseLabel_en-US" xlink:label="lab_srt_ReportableLegalEntitiesMember_6B932930A0646D3AA4677536A4DEA570" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Reportable Legal Entities</link:label>
    <link:label id="lab_srt_ReportableLegalEntitiesMember_6B932930A0646D3AA4677536A4DEA570_label_en-US" xlink:label="lab_srt_ReportableLegalEntitiesMember_6B932930A0646D3AA4677536A4DEA570" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Reportable Legal Entities [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ReportableLegalEntitiesMember" xlink:label="loc_srt_ReportableLegalEntitiesMember_6B932930A0646D3AA4677536A4DEA570" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_ReportableLegalEntitiesMember_6B932930A0646D3AA4677536A4DEA570" xlink:to="lab_srt_ReportableLegalEntitiesMember_6B932930A0646D3AA4677536A4DEA570" xlink:type="arc" />
    <link:label id="lab_srt_ConsolidationEliminationsMember_9BE8624A4388569006C27536A4DEF722_terseLabel_en-US" xlink:label="lab_srt_ConsolidationEliminationsMember_9BE8624A4388569006C27536A4DEF722" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Elimination</link:label>
    <link:label id="lab_srt_ConsolidationEliminationsMember_9BE8624A4388569006C27536A4DEF722_label_en-US" xlink:label="lab_srt_ConsolidationEliminationsMember_9BE8624A4388569006C27536A4DEF722" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Consolidation, Eliminations [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidationEliminationsMember" xlink:label="loc_srt_ConsolidationEliminationsMember_9BE8624A4388569006C27536A4DEF722" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_ConsolidationEliminationsMember_9BE8624A4388569006C27536A4DEF722" xlink:to="lab_srt_ConsolidationEliminationsMember_9BE8624A4388569006C27536A4DEF722" xlink:type="arc" />
    <link:label id="lab_srt_CondensedFinancialStatementsCaptionsLineItems_FD0E6E2CDB9A226B61C07536A4DED47C_terseLabel_en-US" xlink:label="lab_srt_CondensedFinancialStatementsCaptionsLineItems_FD0E6E2CDB9A226B61C07536A4DED47C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Condensed Financial Statements, Captions [Line Items]</link:label>
    <link:label id="lab_srt_CondensedFinancialStatementsCaptionsLineItems_FD0E6E2CDB9A226B61C07536A4DED47C_label_en-US" xlink:label="lab_srt_CondensedFinancialStatementsCaptionsLineItems_FD0E6E2CDB9A226B61C07536A4DED47C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Condensed Financial Statements, Captions [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_CondensedFinancialStatementsCaptionsLineItems" xlink:label="loc_srt_CondensedFinancialStatementsCaptionsLineItems_FD0E6E2CDB9A226B61C07536A4DED47C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_CondensedFinancialStatementsCaptionsLineItems_FD0E6E2CDB9A226B61C07536A4DED47C" xlink:to="lab_srt_CondensedFinancialStatementsCaptionsLineItems_FD0E6E2CDB9A226B61C07536A4DED47C" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingExpenses_7432B35D176F5F176E4D7536A4DEA16A_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_OperatingExpenses_7432B35D176F5F176E4D7536A4DEA16A" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Total operating expenses</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingExpenses" xlink:label="loc_us-gaap_OperatingExpenses_7432B35D176F5F176E4D7536A4DEA16A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingExpenses_7432B35D176F5F176E4D7536A4DEA16A" xlink:to="lab_us-gaap_OperatingExpenses_7432B35D176F5F176E4D7536A4DEA16A" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncomeLossFromSubsidiariesNetOfTax_BA9F93976ABC1105A0F07536A4EE874F_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeLossFromSubsidiariesNetOfTax_BA9F93976ABC1105A0F07536A4EE874F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Equity earnings</link:label>
    <link:label id="lab_us-gaap_IncomeLossFromSubsidiariesNetOfTax_BA9F93976ABC1105A0F07536A4EE874F_label_en-US" xlink:label="lab_us-gaap_IncomeLossFromSubsidiariesNetOfTax_BA9F93976ABC1105A0F07536A4EE874F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income (Loss) from Subsidiaries, Net of Tax</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeLossFromSubsidiariesNetOfTax" xlink:label="loc_us-gaap_IncomeLossFromSubsidiariesNetOfTax_BA9F93976ABC1105A0F07536A4EE874F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeLossFromSubsidiariesNetOfTax_BA9F93976ABC1105A0F07536A4EE874F" xlink:to="lab_us-gaap_IncomeLossFromSubsidiariesNetOfTax_BA9F93976ABC1105A0F07536A4EE874F" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncomeTaxExpenseBenefit_242FFA0355C6574E27117536A4EE451A_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxExpenseBenefit_242FFA0355C6574E27117536A4EE451A" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Income tax (expense) benefit</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_242FFA0355C6574E27117536A4EE451A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_242FFA0355C6574E27117536A4EE451A" xlink:to="lab_us-gaap_IncomeTaxExpenseBenefit_242FFA0355C6574E27117536A4EE451A" xlink:type="arc" />
    <link:label id="lab_us-gaap_ComprehensiveIncomeNetOfTax_973A845DB7490FC64C957536A4EE4A7E_terseLabel_en-US" xlink:label="lab_us-gaap_ComprehensiveIncomeNetOfTax_973A845DB7490FC64C957536A4EE4A7E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Comprehensive income attributable to Wabtec shareholders</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTax" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_973A845DB7490FC64C957536A4EE4A7E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_973A845DB7490FC64C957536A4EE4A7E" xlink:to="lab_us-gaap_ComprehensiveIncomeNetOfTax_973A845DB7490FC64C957536A4EE4A7E" xlink:type="arc" />
    <link:label id="lab_us-gaap_FairValueByBalanceSheetGroupingTextBlock_4A21487ED8EB1260E45555CA5E493968_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueByBalanceSheetGroupingTextBlock_4A21487ED8EB1260E45555CA5E493968" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Estimated Fair Values and Related Carrying Values of Financial Instruments</link:label>
    <link:label id="lab_us-gaap_FairValueByBalanceSheetGroupingTextBlock_4A21487ED8EB1260E45555CA5E493968_label_en-US" xlink:label="lab_us-gaap_FairValueByBalanceSheetGroupingTextBlock_4A21487ED8EB1260E45555CA5E493968" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, by Balance Sheet Grouping [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueByBalanceSheetGroupingTextBlock" xlink:label="loc_us-gaap_FairValueByBalanceSheetGroupingTextBlock_4A21487ED8EB1260E45555CA5E493968" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTextBlock_4A21487ED8EB1260E45555CA5E493968" xlink:to="lab_us-gaap_FairValueByBalanceSheetGroupingTextBlock_4A21487ED8EB1260E45555CA5E493968" xlink:type="arc" />
    <link:label id="lab_us-gaap_FairValueByBalanceSheetGroupingTable_A4A371949661B83B41C28E532A0C392C_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueByBalanceSheetGroupingTable_A4A371949661B83B41C28E532A0C392C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair Value By Balance Sheet Grouping [Table]</link:label>
    <link:label id="lab_us-gaap_FairValueByBalanceSheetGroupingTable_A4A371949661B83B41C28E532A0C392C_label_en-US" xlink:label="lab_us-gaap_FairValueByBalanceSheetGroupingTable_A4A371949661B83B41C28E532A0C392C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, by Balance Sheet Grouping [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueByBalanceSheetGroupingTable" xlink:label="loc_us-gaap_FairValueByBalanceSheetGroupingTable_A4A371949661B83B41C28E532A0C392C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_A4A371949661B83B41C28E532A0C392C" xlink:to="lab_us-gaap_FairValueByBalanceSheetGroupingTable_A4A371949661B83B41C28E532A0C392C" xlink:type="arc" />
    <link:label id="lab_us-gaap_FairValueByMeasurementBasisAxis_5D713F49CAFA4131E4498E532A0DB42B_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueByMeasurementBasisAxis_5D713F49CAFA4131E4498E532A0DB42B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Measurement Basis [Axis]</link:label>
    <link:label id="lab_us-gaap_FairValueByMeasurementBasisAxis_5D713F49CAFA4131E4498E532A0DB42B_label_en-US" xlink:label="lab_us-gaap_FairValueByMeasurementBasisAxis_5D713F49CAFA4131E4498E532A0DB42B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Measurement Basis [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueByMeasurementBasisAxis" xlink:label="loc_us-gaap_FairValueByMeasurementBasisAxis_5D713F49CAFA4131E4498E532A0DB42B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_5D713F49CAFA4131E4498E532A0DB42B" xlink:to="lab_us-gaap_FairValueByMeasurementBasisAxis_5D713F49CAFA4131E4498E532A0DB42B" xlink:type="arc" />
    <link:label id="lab_us-gaap_FairValueDisclosureItemAmountsDomain_9D1AF1B6011BA30F28368E532A0D0F40_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueDisclosureItemAmountsDomain_9D1AF1B6011BA30F28368E532A0D0F40" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair Value Measurement [Domain]</link:label>
    <link:label id="lab_us-gaap_FairValueDisclosureItemAmountsDomain_9D1AF1B6011BA30F28368E532A0D0F40_label_en-US" xlink:label="lab_us-gaap_FairValueDisclosureItemAmountsDomain_9D1AF1B6011BA30F28368E532A0D0F40" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value Measurement [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueDisclosureItemAmountsDomain" xlink:label="loc_us-gaap_FairValueDisclosureItemAmountsDomain_9D1AF1B6011BA30F28368E532A0D0F40" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_9D1AF1B6011BA30F28368E532A0D0F40" xlink:to="lab_us-gaap_FairValueDisclosureItemAmountsDomain_9D1AF1B6011BA30F28368E532A0D0F40" xlink:type="arc" />
    <link:label id="lab_us-gaap_PortionAtFairValueFairValueDisclosureMember_940D8393D377114A5F728E532A0EA247_terseLabel_en-US" xlink:label="lab_us-gaap_PortionAtFairValueFairValueDisclosureMember_940D8393D377114A5F728E532A0EA247" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Portion at Fair Value Measurement</link:label>
    <link:label id="lab_us-gaap_PortionAtFairValueFairValueDisclosureMember_940D8393D377114A5F728E532A0EA247_label_en-US" xlink:label="lab_us-gaap_PortionAtFairValueFairValueDisclosureMember_940D8393D377114A5F728E532A0EA247" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Portion at Fair Value Measurement [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_940D8393D377114A5F728E532A0EA247" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_940D8393D377114A5F728E532A0EA247" xlink:to="lab_us-gaap_PortionAtFairValueFairValueDisclosureMember_940D8393D377114A5F728E532A0EA247" xlink:type="arc" />
    <link:label id="lab_us-gaap_CarryingReportedAmountFairValueDisclosureMember_15F90C3D54EA0146D4C58E532A0E57E6_terseLabel_en-US" xlink:label="lab_us-gaap_CarryingReportedAmountFairValueDisclosureMember_15F90C3D54EA0146D4C58E532A0E57E6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Carrying Value</link:label>
    <link:label id="lab_us-gaap_CarryingReportedAmountFairValueDisclosureMember_15F90C3D54EA0146D4C58E532A0E57E6_label_en-US" xlink:label="lab_us-gaap_CarryingReportedAmountFairValueDisclosureMember_15F90C3D54EA0146D4C58E532A0E57E6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Reported Value Measurement [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CarryingReportedAmountFairValueDisclosureMember" xlink:label="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_15F90C3D54EA0146D4C58E532A0E57E6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_15F90C3D54EA0146D4C58E532A0E57E6" xlink:to="lab_us-gaap_CarryingReportedAmountFairValueDisclosureMember_15F90C3D54EA0146D4C58E532A0E57E6" xlink:type="arc" />
    <link:label id="lab_us-gaap_EstimateOfFairValueFairValueDisclosureMember_5E9B8C464F8A5F244FAE8E532A0E7E21_terseLabel_en-US" xlink:label="lab_us-gaap_EstimateOfFairValueFairValueDisclosureMember_5E9B8C464F8A5F244FAE8E532A0E7E21" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair Value</link:label>
    <link:label id="lab_us-gaap_EstimateOfFairValueFairValueDisclosureMember_5E9B8C464F8A5F244FAE8E532A0E7E21_label_en-US" xlink:label="lab_us-gaap_EstimateOfFairValueFairValueDisclosureMember_5E9B8C464F8A5F244FAE8E532A0E7E21" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Estimate of Fair Value Measurement [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EstimateOfFairValueFairValueDisclosureMember" xlink:label="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_5E9B8C464F8A5F244FAE8E532A0E7E21" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_5E9B8C464F8A5F244FAE8E532A0E7E21" xlink:to="lab_us-gaap_EstimateOfFairValueFairValueDisclosureMember_5E9B8C464F8A5F244FAE8E532A0E7E21" xlink:type="arc" />
    <link:label id="lab_wab_A4.75PercentSeniorNotesDueTwoThousandTwentyThreeMember_1F70DCC8086260B5CD748E532A0F1D62_verboseLabel_en-US" xlink:label="lab_wab_A4.75PercentSeniorNotesDueTwoThousandTwentyThreeMember_1F70DCC8086260B5CD748E532A0F1D62" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">4.375% Senior Notes</link:label>
    <link:label id="lab_wab_A4.75PercentSeniorNotesDueTwoThousandTwentyThreeMember_1F70DCC8086260B5CD748E532A0F1D62_label_en-US" xlink:label="lab_wab_A4.75PercentSeniorNotesDueTwoThousandTwentyThreeMember_1F70DCC8086260B5CD748E532A0F1D62" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">4.75 Percent Senior Notes Due Two Thousand Twenty Three [Member]</link:label>
    <link:label id="lab_wab_A4.75PercentSeniorNotesDueTwoThousandTwentyThreeMember_1F70DCC8086260B5CD748E532A0F1D62_documentation_en-US" xlink:label="lab_wab_A4.75PercentSeniorNotesDueTwoThousandTwentyThreeMember_1F70DCC8086260B5CD748E532A0F1D62" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">4.75 percent senior notes due two thousand twenty three.</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_A4.75PercentSeniorNotesDueTwoThousandTwentyThreeMember" xlink:label="loc_wab_A4.75PercentSeniorNotesDueTwoThousandTwentyThreeMember_1F70DCC8086260B5CD748E532A0F1D62" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_A4.75PercentSeniorNotesDueTwoThousandTwentyThreeMember_1F70DCC8086260B5CD748E532A0F1D62" xlink:to="lab_wab_A4.75PercentSeniorNotesDueTwoThousandTwentyThreeMember_1F70DCC8086260B5CD748E532A0F1D62" xlink:type="arc" />
    <link:label id="lab_wab_SeniorNotesDue2026Member_D65FC4492943522FBD668E532A0FA4F0_verboseLabel_en-US" xlink:label="lab_wab_SeniorNotesDue2026Member_D65FC4492943522FBD668E532A0FA4F0" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">3.45% Senior Notes</link:label>
    <link:label id="lab_wab_SeniorNotesDue2026Member_D65FC4492943522FBD668E532A0FA4F0_label_en-US" xlink:label="lab_wab_SeniorNotesDue2026Member_D65FC4492943522FBD668E532A0FA4F0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Senior Notes Due 2026 [Member]</link:label>
    <link:label id="lab_wab_SeniorNotesDue2026Member_D65FC4492943522FBD668E532A0FA4F0_documentation_en-US" xlink:label="lab_wab_SeniorNotesDue2026Member_D65FC4492943522FBD668E532A0FA4F0" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Senior Notes Due 2026 [Member]</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_SeniorNotesDue2026Member" xlink:label="loc_wab_SeniorNotesDue2026Member_D65FC4492943522FBD668E532A0FA4F0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_SeniorNotesDue2026Member_D65FC4492943522FBD668E532A0FA4F0" xlink:to="lab_wab_SeniorNotesDue2026Member_D65FC4492943522FBD668E532A0FA4F0" xlink:type="arc" />
    <link:label id="lab_wab_FloatingRateNotesDue2021Member_E21AA04AFDFB6CD06D4E8E532A0FC562_terseLabel_en-US" xlink:label="lab_wab_FloatingRateNotesDue2021Member_E21AA04AFDFB6CD06D4E8E532A0FC562" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Floating Rate Notes 2021</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_FloatingRateNotesDue2021Member" xlink:label="loc_wab_FloatingRateNotesDue2021Member_E21AA04AFDFB6CD06D4E8E532A0FC562" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_FloatingRateNotesDue2021Member_E21AA04AFDFB6CD06D4E8E532A0FC562" xlink:to="lab_wab_FloatingRateNotesDue2021Member_E21AA04AFDFB6CD06D4E8E532A0FC562" xlink:type="arc" />
    <link:label id="lab_wab_A4.150PercentSeniorNotesDueTwentyThousandandTwentyFourMember_FA4FCE2AF874B098A4CB8E532A0F7878_terseLabel_en-US" xlink:label="lab_wab_A4.150PercentSeniorNotesDueTwentyThousandandTwentyFourMember_FA4FCE2AF874B098A4CB8E532A0F7878" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">4.15% Senior Notes</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_A4.150PercentSeniorNotesDueTwentyThousandandTwentyFourMember" xlink:label="loc_wab_A4.150PercentSeniorNotesDueTwentyThousandandTwentyFourMember_FA4FCE2AF874B098A4CB8E532A0F7878" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_A4.150PercentSeniorNotesDueTwentyThousandandTwentyFourMember_FA4FCE2AF874B098A4CB8E532A0F7878" xlink:to="lab_wab_A4.150PercentSeniorNotesDueTwentyThousandandTwentyFourMember_FA4FCE2AF874B098A4CB8E532A0F7878" xlink:type="arc" />
    <link:label id="lab_wab_A4.70PercentSeniorNotesDueTwentyThousandandTwentySixMember_88E24CCB9A3844F148428E532A15316F_terseLabel_en-US" xlink:label="lab_wab_A4.70PercentSeniorNotesDueTwentyThousandandTwentySixMember_88E24CCB9A3844F148428E532A15316F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">4.7% Senior Notes</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_A4.70PercentSeniorNotesDueTwentyThousandandTwentySixMember" xlink:label="loc_wab_A4.70PercentSeniorNotesDueTwentyThousandandTwentySixMember_88E24CCB9A3844F148428E532A15316F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_A4.70PercentSeniorNotesDueTwentyThousandandTwentySixMember_88E24CCB9A3844F148428E532A15316F" xlink:to="lab_wab_A4.70PercentSeniorNotesDueTwentyThousandandTwentySixMember_88E24CCB9A3844F148428E532A15316F" xlink:type="arc" />
    <link:label id="lab_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_BA11F0ECEB350001BB798E532A153776_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_BA11F0ECEB350001BB798E532A153776" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]</link:label>
    <link:label id="lab_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_BA11F0ECEB350001BB798E532A153776_label_en-US" xlink:label="lab_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_BA11F0ECEB350001BB798E532A153776" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" xlink:label="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_BA11F0ECEB350001BB798E532A153776" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_BA11F0ECEB350001BB798E532A153776" xlink:to="lab_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_BA11F0ECEB350001BB798E532A153776" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentFairValue_47BF9D243AC4DA76AABF8E532A1555DF_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentFairValue_47BF9D243AC4DA76AABF8E532A1555DF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt instrument</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentFairValue_47BF9D243AC4DA76AABF8E532A1555DF_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentFairValue_47BF9D243AC4DA76AABF8E532A1555DF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Fair Value Disclosure</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentFairValue" xlink:label="loc_us-gaap_DebtInstrumentFairValue_47BF9D243AC4DA76AABF8E532A1555DF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentFairValue_47BF9D243AC4DA76AABF8E532A1555DF" xlink:to="lab_us-gaap_DebtInstrumentFairValue_47BF9D243AC4DA76AABF8E532A1555DF" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingLeaseCost_C9E75A94526DA877CFB151F92483A1BA_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeaseCost_C9E75A94526DA877CFB151F92483A1BA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Operating Lease Expense</link:label>
    <link:label id="lab_us-gaap_OperatingLeaseCost_C9E75A94526DA877CFB151F92483A1BA_label_en-US" xlink:label="lab_us-gaap_OperatingLeaseCost_C9E75A94526DA877CFB151F92483A1BA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Lease, Cost</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeaseCost" xlink:label="loc_us-gaap_OperatingLeaseCost_C9E75A94526DA877CFB151F92483A1BA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeaseCost_C9E75A94526DA877CFB151F92483A1BA" xlink:to="lab_us-gaap_OperatingLeaseCost_C9E75A94526DA877CFB151F92483A1BA" xlink:type="arc" />
    <link:label id="lab_us-gaap_FinanceLeaseRightOfUseAssetAmortization_BD1FD9CA8AE36611864F51F92483DA97_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseRightOfUseAssetAmortization_BD1FD9CA8AE36611864F51F92483DA97" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amortization of Leased Assets</link:label>
    <link:label id="lab_us-gaap_FinanceLeaseRightOfUseAssetAmortization_BD1FD9CA8AE36611864F51F92483DA97_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseRightOfUseAssetAmortization_BD1FD9CA8AE36611864F51F92483DA97" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finance Lease, Right-of-Use Asset, Amortization</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinanceLeaseRightOfUseAssetAmortization" xlink:label="loc_us-gaap_FinanceLeaseRightOfUseAssetAmortization_BD1FD9CA8AE36611864F51F92483DA97" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLeaseRightOfUseAssetAmortization_BD1FD9CA8AE36611864F51F92483DA97" xlink:to="lab_us-gaap_FinanceLeaseRightOfUseAssetAmortization_BD1FD9CA8AE36611864F51F92483DA97" xlink:type="arc" />
    <link:label id="lab_us-gaap_FinanceLeaseInterestExpense_ED2B5A6A9EF46EEA1DEE51F92483CD87_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseInterestExpense_ED2B5A6A9EF46EEA1DEE51F92483CD87" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Interest on Lease Liabilities</link:label>
    <link:label id="lab_us-gaap_FinanceLeaseInterestExpense_ED2B5A6A9EF46EEA1DEE51F92483CD87_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseInterestExpense_ED2B5A6A9EF46EEA1DEE51F92483CD87" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finance Lease, Interest Expense</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinanceLeaseInterestExpense" xlink:label="loc_us-gaap_FinanceLeaseInterestExpense_ED2B5A6A9EF46EEA1DEE51F92483CD87" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLeaseInterestExpense_ED2B5A6A9EF46EEA1DEE51F92483CD87" xlink:to="lab_us-gaap_FinanceLeaseInterestExpense_ED2B5A6A9EF46EEA1DEE51F92483CD87" xlink:type="arc" />
    <link:label id="lab_wab_ShorttermAndVariableLeaseCost_444DB2A519EC8E149CC851F92483E840_terseLabel_en-US" xlink:label="lab_wab_ShorttermAndVariableLeaseCost_444DB2A519EC8E149CC851F92483E840" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Short-term and Variable Lease Expense</link:label>
    <link:label id="lab_wab_ShorttermAndVariableLeaseCost_444DB2A519EC8E149CC851F92483E840_label_en-US" xlink:label="lab_wab_ShorttermAndVariableLeaseCost_444DB2A519EC8E149CC851F92483E840" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Short-term And Variable Lease, Cost</link:label>
    <link:label id="lab_wab_ShorttermAndVariableLeaseCost_444DB2A519EC8E149CC851F92483E840_documentation_en-US" xlink:label="lab_wab_ShorttermAndVariableLeaseCost_444DB2A519EC8E149CC851F92483E840" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Short-term Lease, Variable Lease, Cost</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_ShorttermAndVariableLeaseCost" xlink:label="loc_wab_ShorttermAndVariableLeaseCost_444DB2A519EC8E149CC851F92483E840" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_ShorttermAndVariableLeaseCost_444DB2A519EC8E149CC851F92483E840" xlink:to="lab_wab_ShorttermAndVariableLeaseCost_444DB2A519EC8E149CC851F92483E840" xlink:type="arc" />
    <link:label id="lab_us-gaap_SubleaseIncome_68DAB60BC72E143DEB1E51F924837FC9_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_SubleaseIncome_68DAB60BC72E143DEB1E51F924837FC9" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Sublease Income</link:label>
    <link:label id="lab_us-gaap_SubleaseIncome_68DAB60BC72E143DEB1E51F924837FC9_label_en-US" xlink:label="lab_us-gaap_SubleaseIncome_68DAB60BC72E143DEB1E51F924837FC9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Sublease Income</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SubleaseIncome" xlink:label="loc_us-gaap_SubleaseIncome_68DAB60BC72E143DEB1E51F924837FC9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SubleaseIncome_68DAB60BC72E143DEB1E51F924837FC9" xlink:to="lab_us-gaap_SubleaseIncome_68DAB60BC72E143DEB1E51F924837FC9" xlink:type="arc" />
    <link:label id="lab_us-gaap_LeaseCost_3B3AC770D0A7ABC36AF951F92483FBA8_totalLabel_en-US" xlink:label="lab_us-gaap_LeaseCost_3B3AC770D0A7ABC36AF951F92483FBA8" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total</link:label>
    <link:label id="lab_us-gaap_LeaseCost_3B3AC770D0A7ABC36AF951F92483FBA8_label_en-US" xlink:label="lab_us-gaap_LeaseCost_3B3AC770D0A7ABC36AF951F92483FBA8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lease, Cost</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LeaseCost" xlink:label="loc_us-gaap_LeaseCost_3B3AC770D0A7ABC36AF951F92483FBA8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LeaseCost_3B3AC770D0A7ABC36AF951F92483FBA8" xlink:to="lab_us-gaap_LeaseCost_3B3AC770D0A7ABC36AF951F92483FBA8" xlink:type="arc" />
    <link:label id="lab_us-gaap_EarningsPerShareTextBlock_F0E0707069ED08D1A795C56747C34E4F_terseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareTextBlock_F0E0707069ED08D1A795C56747C34E4F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Earnings Per Share</link:label>
    <link:label id="lab_us-gaap_EarningsPerShareTextBlock_F0E0707069ED08D1A795C56747C34E4F_label_en-US" xlink:label="lab_us-gaap_EarningsPerShareTextBlock_F0E0707069ED08D1A795C56747C34E4F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Earnings Per Share [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerShareTextBlock" xlink:label="loc_us-gaap_EarningsPerShareTextBlock_F0E0707069ED08D1A795C56747C34E4F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EarningsPerShareTextBlock_F0E0707069ED08D1A795C56747C34E4F" xlink:to="lab_us-gaap_EarningsPerShareTextBlock_F0E0707069ED08D1A795C56747C34E4F" xlink:type="arc" />
    <link:label id="lab_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_F54DFB37E426BCFCC23B8E532BD560FA_terseLabel_en-US" xlink:label="lab_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_F54DFB37E426BCFCC23B8E532BD560FA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table]</link:label>
    <link:label id="lab_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_F54DFB37E426BCFCC23B8E532BD560FA_label_en-US" xlink:label="lab_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_F54DFB37E426BCFCC23B8E532BD560FA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_F54DFB37E426BCFCC23B8E532BD560FA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_F54DFB37E426BCFCC23B8E532BD560FA" xlink:to="lab_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_F54DFB37E426BCFCC23B8E532BD560FA" xlink:type="arc" />
    <link:label id="lab_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis_5C873B8625725070074B8E532BD568B6_terseLabel_en-US" xlink:label="lab_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis_5C873B8625725070074B8E532BD568B6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]</link:label>
    <link:label id="lab_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis_5C873B8625725070074B8E532BD568B6_label_en-US" xlink:label="lab_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis_5C873B8625725070074B8E532BD568B6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis_5C873B8625725070074B8E532BD568B6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis_5C873B8625725070074B8E532BD568B6" xlink:to="lab_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis_5C873B8625725070074B8E532BD568B6" xlink:type="arc" />
    <link:label id="lab_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_ED5A712CEC2C4210DD178E532BD618F3_terseLabel_en-US" xlink:label="lab_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_ED5A712CEC2C4210DD178E532BD618F3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]</link:label>
    <link:label id="lab_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_ED5A712CEC2C4210DD178E532BD618F3_label_en-US" xlink:label="lab_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_ED5A712CEC2C4210DD178E532BD618F3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_ED5A712CEC2C4210DD178E532BD618F3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_ED5A712CEC2C4210DD178E532BD618F3" xlink:to="lab_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_ED5A712CEC2C4210DD178E532BD618F3" xlink:type="arc" />
    <link:label id="lab_us-gaap_RevenueRemainingPerformanceObligation_B068154DFC7818C2963F8E532BD6008C_terseLabel_en-US" xlink:label="lab_us-gaap_RevenueRemainingPerformanceObligation_B068154DFC7818C2963F8E532BD6008C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Remaining performance obligations, amount</link:label>
    <link:label id="lab_us-gaap_RevenueRemainingPerformanceObligation_B068154DFC7818C2963F8E532BD6008C_label_en-US" xlink:label="lab_us-gaap_RevenueRemainingPerformanceObligation_B068154DFC7818C2963F8E532BD6008C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenue, Remaining Performance Obligation, Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevenueRemainingPerformanceObligation" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligation_B068154DFC7818C2963F8E532BD6008C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligation_B068154DFC7818C2963F8E532BD6008C" xlink:to="lab_us-gaap_RevenueRemainingPerformanceObligation_B068154DFC7818C2963F8E532BD6008C" xlink:type="arc" />
    <link:label id="lab_us-gaap_RevenueRemainingPerformanceObligationPercentage_A03E73C159EAE65AA39D8E532BD67EC6_terseLabel_en-US" xlink:label="lab_us-gaap_RevenueRemainingPerformanceObligationPercentage_A03E73C159EAE65AA39D8E532BD67EC6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Remaining performance obligation percentage expected to be recognized</link:label>
    <link:label id="lab_us-gaap_RevenueRemainingPerformanceObligationPercentage_A03E73C159EAE65AA39D8E532BD67EC6_label_en-US" xlink:label="lab_us-gaap_RevenueRemainingPerformanceObligationPercentage_A03E73C159EAE65AA39D8E532BD67EC6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenue, Remaining Performance Obligation, Percentage</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevenueRemainingPerformanceObligationPercentage" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationPercentage_A03E73C159EAE65AA39D8E532BD67EC6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationPercentage_A03E73C159EAE65AA39D8E532BD67EC6" xlink:to="lab_us-gaap_RevenueRemainingPerformanceObligationPercentage_A03E73C159EAE65AA39D8E532BD67EC6" xlink:type="arc" />
    <link:label id="lab_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_5D9AB8A3386DDEEC770D8E532BD62BAB_terseLabel_en-US" xlink:label="lab_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_5D9AB8A3386DDEEC770D8E532BD62BAB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Performance obligation period</link:label>
    <link:label id="lab_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_5D9AB8A3386DDEEC770D8E532BD62BAB_label_en-US" xlink:label="lab_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_5D9AB8A3386DDEEC770D8E532BD62BAB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_5D9AB8A3386DDEEC770D8E532BD62BAB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_5D9AB8A3386DDEEC770D8E532BD62BAB" xlink:to="lab_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_5D9AB8A3386DDEEC770D8E532BD62BAB" xlink:type="arc" />
    <link:label id="lab_us-gaap_PreferredStockParOrStatedValuePerShare_EE19FE92A90552C6F1A98E532C43A42F_terseLabel_en-US" xlink:label="lab_us-gaap_PreferredStockParOrStatedValuePerShare_EE19FE92A90552C6F1A98E532C43A42F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Preferred stock, par value (in dollars per share)</link:label>
    <link:label id="lab_us-gaap_PreferredStockParOrStatedValuePerShare_EE19FE92A90552C6F1A98E532C43A42F_label_en-US" xlink:label="lab_us-gaap_PreferredStockParOrStatedValuePerShare_EE19FE92A90552C6F1A98E532C43A42F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Preferred Stock, Par or Stated Value Per Share</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PreferredStockParOrStatedValuePerShare" xlink:label="loc_us-gaap_PreferredStockParOrStatedValuePerShare_EE19FE92A90552C6F1A98E532C43A42F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PreferredStockParOrStatedValuePerShare_EE19FE92A90552C6F1A98E532C43A42F" xlink:to="lab_us-gaap_PreferredStockParOrStatedValuePerShare_EE19FE92A90552C6F1A98E532C43A42F" xlink:type="arc" />
    <link:label id="lab_us-gaap_PreferredStockSharesAuthorized_707F7FDA79DD03BB88C68E532C42DDA8_terseLabel_en-US" xlink:label="lab_us-gaap_PreferredStockSharesAuthorized_707F7FDA79DD03BB88C68E532C42DDA8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Preferred stock, shares authorized (in shares)</link:label>
    <link:label id="lab_us-gaap_PreferredStockSharesAuthorized_707F7FDA79DD03BB88C68E532C42DDA8_label_en-US" xlink:label="lab_us-gaap_PreferredStockSharesAuthorized_707F7FDA79DD03BB88C68E532C42DDA8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Preferred Stock, Shares Authorized</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PreferredStockSharesAuthorized" xlink:label="loc_us-gaap_PreferredStockSharesAuthorized_707F7FDA79DD03BB88C68E532C42DDA8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PreferredStockSharesAuthorized_707F7FDA79DD03BB88C68E532C42DDA8" xlink:to="lab_us-gaap_PreferredStockSharesAuthorized_707F7FDA79DD03BB88C68E532C42DDA8" xlink:type="arc" />
    <link:label id="lab_us-gaap_PreferredStockSharesOutstanding_C6395F5ACF72FA320B998E532C438E97_verboseLabel_en-US" xlink:label="lab_us-gaap_PreferredStockSharesOutstanding_C6395F5ACF72FA320B998E532C438E97" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Preferred stock, outstanding (in shares)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PreferredStockSharesOutstanding" xlink:label="loc_us-gaap_PreferredStockSharesOutstanding_C6395F5ACF72FA320B998E532C438E97" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PreferredStockSharesOutstanding_C6395F5ACF72FA320B998E532C438E97" xlink:to="lab_us-gaap_PreferredStockSharesOutstanding_C6395F5ACF72FA320B998E532C438E97" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommonStockParOrStatedValuePerShare_C7D75CF825BD93C63F3C8E532C436DA6_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockParOrStatedValuePerShare_C7D75CF825BD93C63F3C8E532C436DA6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Common stock, par value (in dollars per share)</link:label>
    <link:label id="lab_us-gaap_CommonStockParOrStatedValuePerShare_C7D75CF825BD93C63F3C8E532C436DA6_label_en-US" xlink:label="lab_us-gaap_CommonStockParOrStatedValuePerShare_C7D75CF825BD93C63F3C8E532C436DA6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Common Stock, Par or Stated Value Per Share</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommonStockParOrStatedValuePerShare" xlink:label="loc_us-gaap_CommonStockParOrStatedValuePerShare_C7D75CF825BD93C63F3C8E532C436DA6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockParOrStatedValuePerShare_C7D75CF825BD93C63F3C8E532C436DA6" xlink:to="lab_us-gaap_CommonStockParOrStatedValuePerShare_C7D75CF825BD93C63F3C8E532C436DA6" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommonStockSharesAuthorized_F5EE76238C7A6A4FF7A28E532C43667E_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockSharesAuthorized_F5EE76238C7A6A4FF7A28E532C43667E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Common stock, shares authorized (in shares)</link:label>
    <link:label id="lab_us-gaap_CommonStockSharesAuthorized_F5EE76238C7A6A4FF7A28E532C43667E_label_en-US" xlink:label="lab_us-gaap_CommonStockSharesAuthorized_F5EE76238C7A6A4FF7A28E532C43667E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Common Stock, Shares Authorized</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommonStockSharesAuthorized" xlink:label="loc_us-gaap_CommonStockSharesAuthorized_F5EE76238C7A6A4FF7A28E532C43667E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockSharesAuthorized_F5EE76238C7A6A4FF7A28E532C43667E" xlink:to="lab_us-gaap_CommonStockSharesAuthorized_F5EE76238C7A6A4FF7A28E532C43667E" xlink:type="arc" />
    <link:label id="lab_us-gaap_TreasuryStockShares_909B7B72671936AA09AB8E532C44929B_terseLabel_en-US" xlink:label="lab_us-gaap_TreasuryStockShares_909B7B72671936AA09AB8E532C44929B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Treasury stock, shares (in shares)</link:label>
    <link:label id="lab_us-gaap_TreasuryStockShares_909B7B72671936AA09AB8E532C44929B_label_en-US" xlink:label="lab_us-gaap_TreasuryStockShares_909B7B72671936AA09AB8E532C44929B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Treasury Stock, Shares</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TreasuryStockShares" xlink:label="loc_us-gaap_TreasuryStockShares_909B7B72671936AA09AB8E532C44929B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_TreasuryStockShares_909B7B72671936AA09AB8E532C44929B" xlink:to="lab_us-gaap_TreasuryStockShares_909B7B72671936AA09AB8E532C44929B" xlink:type="arc" />
    <link:label id="lab_us-gaap_DefinedBenefitPlanFundedStatusOfPlanAbstract_E16288FFFE41D021BB57C56748FC79B7_terseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanFundedStatusOfPlanAbstract_E16288FFFE41D021BB57C56748FC79B7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net periodic benefit cost</link:label>
    <link:label id="lab_us-gaap_DefinedBenefitPlanFundedStatusOfPlanAbstract_E16288FFFE41D021BB57C56748FC79B7_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanFundedStatusOfPlanAbstract_E16288FFFE41D021BB57C56748FC79B7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Defined Benefit Plan, Funded (Unfunded) Status of Plan [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanFundedStatusOfPlanAbstract" xlink:label="loc_us-gaap_DefinedBenefitPlanFundedStatusOfPlanAbstract_E16288FFFE41D021BB57C56748FC79B7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DefinedBenefitPlanFundedStatusOfPlanAbstract_E16288FFFE41D021BB57C56748FC79B7" xlink:to="lab_us-gaap_DefinedBenefitPlanFundedStatusOfPlanAbstract_E16288FFFE41D021BB57C56748FC79B7" xlink:type="arc" />
    <link:label id="lab_us-gaap_DefinedBenefitPlanServiceCost_2516DBE5A91BB5D94122C56748FCFC53_terseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanServiceCost_2516DBE5A91BB5D94122C56748FCFC53" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Service cost</link:label>
    <link:label id="lab_us-gaap_DefinedBenefitPlanServiceCost_2516DBE5A91BB5D94122C56748FCFC53_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanServiceCost_2516DBE5A91BB5D94122C56748FCFC53" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Defined Benefit Plan, Service Cost</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanServiceCost" xlink:label="loc_us-gaap_DefinedBenefitPlanServiceCost_2516DBE5A91BB5D94122C56748FCFC53" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DefinedBenefitPlanServiceCost_2516DBE5A91BB5D94122C56748FCFC53" xlink:to="lab_us-gaap_DefinedBenefitPlanServiceCost_2516DBE5A91BB5D94122C56748FCFC53" xlink:type="arc" />
    <link:label id="lab_us-gaap_DefinedBenefitPlanInterestCost_A9943F6408F90BA950D7C56748FCD3F3_terseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanInterestCost_A9943F6408F90BA950D7C56748FCD3F3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Interest cost</link:label>
    <link:label id="lab_us-gaap_DefinedBenefitPlanInterestCost_A9943F6408F90BA950D7C56748FCD3F3_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanInterestCost_A9943F6408F90BA950D7C56748FCD3F3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Defined Benefit Plan, Interest Cost</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanInterestCost" xlink:label="loc_us-gaap_DefinedBenefitPlanInterestCost_A9943F6408F90BA950D7C56748FCD3F3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DefinedBenefitPlanInterestCost_A9943F6408F90BA950D7C56748FCD3F3" xlink:to="lab_us-gaap_DefinedBenefitPlanInterestCost_A9943F6408F90BA950D7C56748FCD3F3" xlink:type="arc" />
    <link:label id="lab_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_A0BDDB07ECE40166D43DC56748FCC386_negatedLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_A0BDDB07ECE40166D43DC56748FCC386" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Expected return on plan assets</link:label>
    <link:label id="lab_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_A0BDDB07ECE40166D43DC56748FCC386_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_A0BDDB07ECE40166D43DC56748FCC386" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Defined Benefit Plan, Expected Return (Loss) on Plan Assets</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_A0BDDB07ECE40166D43DC56748FCC386" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_A0BDDB07ECE40166D43DC56748FCC386" xlink:to="lab_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_A0BDDB07ECE40166D43DC56748FCC386" xlink:type="arc" />
    <link:label id="lab_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_16C25D7AF658026D63DDC56748FCF9D1_negatedLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_16C25D7AF658026D63DDC56748FCF9D1" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Net amortization/deferrals</link:label>
    <link:label id="lab_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_16C25D7AF658026D63DDC56748FCF9D1_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_16C25D7AF658026D63DDC56748FCF9D1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Defined Benefit Plan, Amortization of Gain (Loss)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses" xlink:label="loc_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_16C25D7AF658026D63DDC56748FCF9D1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_16C25D7AF658026D63DDC56748FCF9D1" xlink:to="lab_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_16C25D7AF658026D63DDC56748FCF9D1" xlink:type="arc" />
    <link:label id="lab_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_C301C2A1E9D932AE2046C56748FCBF69_totalLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_C301C2A1E9D932AE2046C56748FCBF69" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net periodic benefit cost (credit)</link:label>
    <link:label id="lab_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_C301C2A1E9D932AE2046C56748FCBF69_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_C301C2A1E9D932AE2046C56748FCBF69" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Defined Benefit Plan, Net Periodic Benefit Cost (Credit)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost" xlink:label="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_C301C2A1E9D932AE2046C56748FCBF69" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_C301C2A1E9D932AE2046C56748FCBF69" xlink:to="lab_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_C301C2A1E9D932AE2046C56748FCBF69" xlink:type="arc" />
    <link:label id="lab_us-gaap_DefinedBenefitPlanAssumptionsUsedInCalculationsAbstract_E59BB696638E82EC2AFEC56748FC994D_terseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanAssumptionsUsedInCalculationsAbstract_E59BB696638E82EC2AFEC56748FC994D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Assumptions</link:label>
    <link:label id="lab_us-gaap_DefinedBenefitPlanAssumptionsUsedInCalculationsAbstract_E59BB696638E82EC2AFEC56748FC994D_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanAssumptionsUsedInCalculationsAbstract_E59BB696638E82EC2AFEC56748FC994D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Defined Benefit Plan, Assumptions Used in Calculations [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedInCalculationsAbstract" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedInCalculationsAbstract_E59BB696638E82EC2AFEC56748FC994D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedInCalculationsAbstract_E59BB696638E82EC2AFEC56748FC994D" xlink:to="lab_us-gaap_DefinedBenefitPlanAssumptionsUsedInCalculationsAbstract_E59BB696638E82EC2AFEC56748FC994D" xlink:type="arc" />
    <link:label id="lab_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate_448BD294E20DDDEEF513C56748FC370A_terseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate_448BD294E20DDDEEF513C56748FC370A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Discount Rate (as a percent)</link:label>
    <link:label id="lab_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate_448BD294E20DDDEEF513C56748FC370A_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate_448BD294E20DDDEEF513C56748FC370A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate_448BD294E20DDDEEF513C56748FC370A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate_448BD294E20DDDEEF513C56748FC370A" xlink:to="lab_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate_448BD294E20DDDEEF513C56748FC370A" xlink:type="arc" />
    <link:label id="lab_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets_B9A4F299CD9B8656E86CC56748FC180C_terseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets_B9A4F299CD9B8656E86CC56748FC180C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Expected long-term rate of return (as a percent)</link:label>
    <link:label id="lab_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets_B9A4F299CD9B8656E86CC56748FC180C_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets_B9A4F299CD9B8656E86CC56748FC180C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets_B9A4F299CD9B8656E86CC56748FC180C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets_B9A4F299CD9B8656E86CC56748FC180C" xlink:to="lab_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets_B9A4F299CD9B8656E86CC56748FC180C" xlink:type="arc" />
    <link:label id="lab_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease_1045C6DAB9646EA3097EC56748FC768D_terseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease_1045C6DAB9646EA3097EC56748FC768D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Rate of compensation increase (as a percent)</link:label>
    <link:label id="lab_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease_1045C6DAB9646EA3097EC56748FC768D_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease_1045C6DAB9646EA3097EC56748FC768D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Rate of Compensation Increase</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease_1045C6DAB9646EA3097EC56748FC768D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease_1045C6DAB9646EA3097EC56748FC768D" xlink:to="lab_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease_1045C6DAB9646EA3097EC56748FC768D" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessCombinationDisclosureTextBlock_7B65D8BEDC47107D5F5BC56747C33467_verboseLabel_en-US" xlink:label="lab_us-gaap_BusinessCombinationDisclosureTextBlock_7B65D8BEDC47107D5F5BC56747C33467" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Acquisitions</link:label>
    <link:label id="lab_us-gaap_BusinessCombinationDisclosureTextBlock_7B65D8BEDC47107D5F5BC56747C33467_label_en-US" xlink:label="lab_us-gaap_BusinessCombinationDisclosureTextBlock_7B65D8BEDC47107D5F5BC56747C33467" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Combination Disclosure [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationDisclosureTextBlock" xlink:label="loc_us-gaap_BusinessCombinationDisclosureTextBlock_7B65D8BEDC47107D5F5BC56747C33467" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessCombinationDisclosureTextBlock_7B65D8BEDC47107D5F5BC56747C33467" xlink:to="lab_us-gaap_BusinessCombinationDisclosureTextBlock_7B65D8BEDC47107D5F5BC56747C33467" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessAcquisitionsProFormaRevenue_DDBAA35BACE304AC446FC56748EC231E_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionsProFormaRevenue_DDBAA35BACE304AC446FC56748EC231E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net sales</link:label>
    <link:label id="lab_us-gaap_BusinessAcquisitionsProFormaRevenue_DDBAA35BACE304AC446FC56748EC231E_label_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionsProFormaRevenue_DDBAA35BACE304AC446FC56748EC231E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Acquisition, Pro Forma Revenue</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionsProFormaRevenue" xlink:label="loc_us-gaap_BusinessAcquisitionsProFormaRevenue_DDBAA35BACE304AC446FC56748EC231E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessAcquisitionsProFormaRevenue_DDBAA35BACE304AC446FC56748EC231E" xlink:to="lab_us-gaap_BusinessAcquisitionsProFormaRevenue_DDBAA35BACE304AC446FC56748EC231E" xlink:type="arc" />
    <link:label id="lab_wab_BusinessAcquisitionProFormaGrossProfit_B2EF2AA9084EA24C9C04C56748ECC44F_terseLabel_en-US" xlink:label="lab_wab_BusinessAcquisitionProFormaGrossProfit_B2EF2AA9084EA24C9C04C56748ECC44F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Gross profit</link:label>
    <link:label id="lab_wab_BusinessAcquisitionProFormaGrossProfit_B2EF2AA9084EA24C9C04C56748ECC44F_label_en-US" xlink:label="lab_wab_BusinessAcquisitionProFormaGrossProfit_B2EF2AA9084EA24C9C04C56748ECC44F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Acquisition Pro Forma Gross Profit</link:label>
    <link:label id="lab_wab_BusinessAcquisitionProFormaGrossProfit_B2EF2AA9084EA24C9C04C56748ECC44F_documentation_en-US" xlink:label="lab_wab_BusinessAcquisitionProFormaGrossProfit_B2EF2AA9084EA24C9C04C56748ECC44F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The proforma gross profit for a period as if the business combination or combinations had been completed at the beginning of the period.</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_BusinessAcquisitionProFormaGrossProfit" xlink:label="loc_wab_BusinessAcquisitionProFormaGrossProfit_B2EF2AA9084EA24C9C04C56748ECC44F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_BusinessAcquisitionProFormaGrossProfit_B2EF2AA9084EA24C9C04C56748ECC44F" xlink:to="lab_wab_BusinessAcquisitionProFormaGrossProfit_B2EF2AA9084EA24C9C04C56748ECC44F" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss_C090C1EFBD15EBA1E83FC56748ECB14E_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss_C090C1EFBD15EBA1E83FC56748ECB14E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net income attributable to Wabtec shareholders</link:label>
    <link:label id="lab_us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss_C090C1EFBD15EBA1E83FC56748ECB14E_label_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss_C090C1EFBD15EBA1E83FC56748ECB14E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Acquisition, Pro Forma Net Income (Loss)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss" xlink:label="loc_us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss_C090C1EFBD15EBA1E83FC56748ECB14E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss_C090C1EFBD15EBA1E83FC56748ECB14E" xlink:to="lab_us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss_C090C1EFBD15EBA1E83FC56748ECB14E" xlink:type="arc" />
    <link:label id="lab_us-gaap_EarningsPerShareDilutedAbstract_4BAAF5B51AD1C15F75BFC56748EC2F73_verboseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareDilutedAbstract_4BAAF5B51AD1C15F75BFC56748EC2F73" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Diluted earnings per share</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerShareDilutedAbstract" xlink:label="loc_us-gaap_EarningsPerShareDilutedAbstract_4BAAF5B51AD1C15F75BFC56748EC2F73" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EarningsPerShareDilutedAbstract_4BAAF5B51AD1C15F75BFC56748EC2F73" xlink:to="lab_us-gaap_EarningsPerShareDilutedAbstract_4BAAF5B51AD1C15F75BFC56748EC2F73" xlink:type="arc" />
    <link:label id="lab_us-gaap_EarningsPerShareDiluted_D0EF58EABFBE2B6B7958C56748EC3531_netLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareDiluted_D0EF58EABFBE2B6B7958C56748EC3531" xlink:role="http://www.xbrl.org/2009/role/netLabel" xlink:type="resource" xml:lang="en-US">As Reported (in dollars per share)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerShareDiluted" xlink:label="loc_us-gaap_EarningsPerShareDiluted_D0EF58EABFBE2B6B7958C56748EC3531" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EarningsPerShareDiluted_D0EF58EABFBE2B6B7958C56748EC3531" xlink:to="lab_us-gaap_EarningsPerShareDiluted_D0EF58EABFBE2B6B7958C56748EC3531" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessAcquisitionProFormaEarningsPerShareDiluted_E426F3157B7A22A56FAAC56748EC43FE_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionProFormaEarningsPerShareDiluted_E426F3157B7A22A56FAAC56748EC43FE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Pro forma (in dollars per share)</link:label>
    <link:label id="lab_us-gaap_BusinessAcquisitionProFormaEarningsPerShareDiluted_E426F3157B7A22A56FAAC56748EC43FE_label_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionProFormaEarningsPerShareDiluted_E426F3157B7A22A56FAAC56748EC43FE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Acquisition, Pro Forma Earnings Per Share, Diluted</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionProFormaEarningsPerShareDiluted" xlink:label="loc_us-gaap_BusinessAcquisitionProFormaEarningsPerShareDiluted_E426F3157B7A22A56FAAC56748EC43FE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessAcquisitionProFormaEarningsPerShareDiluted_E426F3157B7A22A56FAAC56748EC43FE" xlink:to="lab_us-gaap_BusinessAcquisitionProFormaEarningsPerShareDiluted_E426F3157B7A22A56FAAC56748EC43FE" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProductWarrantiesDisclosuresAbstract_EA10C03A59249F9B43EDC5674785E89B_label_en-US" xlink:label="lab_us-gaap_ProductWarrantiesDisclosuresAbstract_EA10C03A59249F9B43EDC5674785E89B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Product Warranties Disclosures [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProductWarrantiesDisclosuresAbstract" xlink:label="loc_us-gaap_ProductWarrantiesDisclosuresAbstract_EA10C03A59249F9B43EDC5674785E89B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProductWarrantiesDisclosuresAbstract_EA10C03A59249F9B43EDC5674785E89B" xlink:to="lab_us-gaap_ProductWarrantiesDisclosuresAbstract_EA10C03A59249F9B43EDC5674785E89B" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProductWarrantyDisclosureTextBlock_C76C0FAEBE9A55693788C5674785A7CD_terseLabel_en-US" xlink:label="lab_us-gaap_ProductWarrantyDisclosureTextBlock_C76C0FAEBE9A55693788C5674785A7CD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Warranties</link:label>
    <link:label id="lab_us-gaap_ProductWarrantyDisclosureTextBlock_C76C0FAEBE9A55693788C5674785A7CD_label_en-US" xlink:label="lab_us-gaap_ProductWarrantyDisclosureTextBlock_C76C0FAEBE9A55693788C5674785A7CD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Product Warranty Disclosure [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProductWarrantyDisclosureTextBlock" xlink:label="loc_us-gaap_ProductWarrantyDisclosureTextBlock_C76C0FAEBE9A55693788C5674785A7CD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProductWarrantyDisclosureTextBlock_C76C0FAEBE9A55693788C5674785A7CD" xlink:to="lab_us-gaap_ProductWarrantyDisclosureTextBlock_C76C0FAEBE9A55693788C5674785A7CD" xlink:type="arc" />
    <link:label id="lab_us-gaap_InventoryRawMaterialsNetOfReserves_3610EA8F14EAF400953DC5674785340F_terseLabel_en-US" xlink:label="lab_us-gaap_InventoryRawMaterialsNetOfReserves_3610EA8F14EAF400953DC5674785340F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Raw materials</link:label>
    <link:label id="lab_us-gaap_InventoryRawMaterialsNetOfReserves_3610EA8F14EAF400953DC5674785340F_label_en-US" xlink:label="lab_us-gaap_InventoryRawMaterialsNetOfReserves_3610EA8F14EAF400953DC5674785340F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Inventory, Raw Materials, Net of Reserves</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InventoryRawMaterialsNetOfReserves" xlink:label="loc_us-gaap_InventoryRawMaterialsNetOfReserves_3610EA8F14EAF400953DC5674785340F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InventoryRawMaterialsNetOfReserves_3610EA8F14EAF400953DC5674785340F" xlink:to="lab_us-gaap_InventoryRawMaterialsNetOfReserves_3610EA8F14EAF400953DC5674785340F" xlink:type="arc" />
    <link:label id="lab_us-gaap_InventoryWorkInProcessNetOfReserves_65557C6D849D50E8E44BC56747852D70_terseLabel_en-US" xlink:label="lab_us-gaap_InventoryWorkInProcessNetOfReserves_65557C6D849D50E8E44BC56747852D70" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Work-in-progress</link:label>
    <link:label id="lab_us-gaap_InventoryWorkInProcessNetOfReserves_65557C6D849D50E8E44BC56747852D70_label_en-US" xlink:label="lab_us-gaap_InventoryWorkInProcessNetOfReserves_65557C6D849D50E8E44BC56747852D70" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Inventory, Work in Process, Net of Reserves</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InventoryWorkInProcessNetOfReserves" xlink:label="loc_us-gaap_InventoryWorkInProcessNetOfReserves_65557C6D849D50E8E44BC56747852D70" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InventoryWorkInProcessNetOfReserves_65557C6D849D50E8E44BC56747852D70" xlink:to="lab_us-gaap_InventoryWorkInProcessNetOfReserves_65557C6D849D50E8E44BC56747852D70" xlink:type="arc" />
    <link:label id="lab_us-gaap_InventoryFinishedGoodsNetOfReserves_EFFD577F6DF922831D4DC56747858963_terseLabel_en-US" xlink:label="lab_us-gaap_InventoryFinishedGoodsNetOfReserves_EFFD577F6DF922831D4DC56747858963" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Finished goods</link:label>
    <link:label id="lab_us-gaap_InventoryFinishedGoodsNetOfReserves_EFFD577F6DF922831D4DC56747858963_label_en-US" xlink:label="lab_us-gaap_InventoryFinishedGoodsNetOfReserves_EFFD577F6DF922831D4DC56747858963" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Inventory, Finished Goods, Net of Reserves</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InventoryFinishedGoodsNetOfReserves" xlink:label="loc_us-gaap_InventoryFinishedGoodsNetOfReserves_EFFD577F6DF922831D4DC56747858963" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InventoryFinishedGoodsNetOfReserves_EFFD577F6DF922831D4DC56747858963" xlink:to="lab_us-gaap_InventoryFinishedGoodsNetOfReserves_EFFD577F6DF922831D4DC56747858963" xlink:type="arc" />
    <link:label id="lab_us-gaap_InventoryNet_FED62ADE9112A6464089C56747856BFB_totalLabel_en-US" xlink:label="lab_us-gaap_InventoryNet_FED62ADE9112A6464089C56747856BFB" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total inventories</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InventoryNet" xlink:label="loc_us-gaap_InventoryNet_FED62ADE9112A6464089C56747856BFB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InventoryNet_FED62ADE9112A6464089C56747856BFB" xlink:to="lab_us-gaap_InventoryNet_FED62ADE9112A6464089C56747856BFB" xlink:type="arc" />
    <link:label id="lab_us-gaap_NumberOfReportableSegments_D1B9D436B73EE62EAD9CC567491B8D4E_terseLabel_en-US" xlink:label="lab_us-gaap_NumberOfReportableSegments_D1B9D436B73EE62EAD9CC567491B8D4E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of reportable segments</link:label>
    <link:label id="lab_us-gaap_NumberOfReportableSegments_D1B9D436B73EE62EAD9CC567491B8D4E_label_en-US" xlink:label="lab_us-gaap_NumberOfReportableSegments_D1B9D436B73EE62EAD9CC567491B8D4E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number of Reportable Segments</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NumberOfReportableSegments" xlink:label="loc_us-gaap_NumberOfReportableSegments_D1B9D436B73EE62EAD9CC567491B8D4E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NumberOfReportableSegments_D1B9D436B73EE62EAD9CC567491B8D4E" xlink:to="lab_us-gaap_NumberOfReportableSegments_D1B9D436B73EE62EAD9CC567491B8D4E" xlink:type="arc" />
    <link:label id="lab_us-gaap_RevenueFromContractWithCustomerAbstract_DA28B44FC021C965CAE3C5674775C683_label_en-US" xlink:label="lab_us-gaap_RevenueFromContractWithCustomerAbstract_DA28B44FC021C965CAE3C5674775C683" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenue from Contract with Customer [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevenueFromContractWithCustomerAbstract" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerAbstract_DA28B44FC021C965CAE3C5674775C683" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RevenueFromContractWithCustomerAbstract_DA28B44FC021C965CAE3C5674775C683" xlink:to="lab_us-gaap_RevenueFromContractWithCustomerAbstract_DA28B44FC021C965CAE3C5674775C683" xlink:type="arc" />
    <link:label id="lab_us-gaap_ContractWithCustomerAssetAndLiabilityTableTextBlock_DD4E7BD416C176486970C56747850820_terseLabel_en-US" xlink:label="lab_us-gaap_ContractWithCustomerAssetAndLiabilityTableTextBlock_DD4E7BD416C176486970C56747850820" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Change in Carrying Amount of Contract Assets and Contract Liabilities</link:label>
    <link:label id="lab_us-gaap_ContractWithCustomerAssetAndLiabilityTableTextBlock_DD4E7BD416C176486970C56747850820_label_en-US" xlink:label="lab_us-gaap_ContractWithCustomerAssetAndLiabilityTableTextBlock_DD4E7BD416C176486970C56747850820" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Contract with Customer, Asset and Liability [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ContractWithCustomerAssetAndLiabilityTableTextBlock" xlink:label="loc_us-gaap_ContractWithCustomerAssetAndLiabilityTableTextBlock_DD4E7BD416C176486970C56747850820" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ContractWithCustomerAssetAndLiabilityTableTextBlock_DD4E7BD416C176486970C56747850820" xlink:to="lab_us-gaap_ContractWithCustomerAssetAndLiabilityTableTextBlock_DD4E7BD416C176486970C56747850820" xlink:type="arc" />
    <link:label id="lab_wab_DocumentAndEntityInformationAbstract_D696715DFF64148B2DD6C614415DCDF4_label_en-US" xlink:label="lab_wab_DocumentAndEntityInformationAbstract_D696715DFF64148B2DD6C614415DCDF4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Document And Entity Information [Abstract]</link:label>
    <link:label id="lab_wab_DocumentAndEntityInformationAbstract_D696715DFF64148B2DD6C614415DCDF4_documentation_en-US" xlink:label="lab_wab_DocumentAndEntityInformationAbstract_D696715DFF64148B2DD6C614415DCDF4" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Document and entity information.</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_DocumentAndEntityInformationAbstract" xlink:label="loc_wab_DocumentAndEntityInformationAbstract_D696715DFF64148B2DD6C614415DCDF4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_DocumentAndEntityInformationAbstract_D696715DFF64148B2DD6C614415DCDF4" xlink:to="lab_wab_DocumentAndEntityInformationAbstract_D696715DFF64148B2DD6C614415DCDF4" xlink:type="arc" />
    <link:label id="lab_dei_DocumentType_F8CA0C196FAE167312B7C614415D30DF_terseLabel_en-US" xlink:label="lab_dei_DocumentType_F8CA0C196FAE167312B7C614415D30DF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Document Type</link:label>
    <link:label id="lab_dei_DocumentType_F8CA0C196FAE167312B7C614415D30DF_label_en-US" xlink:label="lab_dei_DocumentType_F8CA0C196FAE167312B7C614415D30DF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Document Type</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_DocumentType" xlink:label="loc_dei_DocumentType_F8CA0C196FAE167312B7C614415D30DF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentType_F8CA0C196FAE167312B7C614415D30DF" xlink:to="lab_dei_DocumentType_F8CA0C196FAE167312B7C614415D30DF" xlink:type="arc" />
    <link:label id="lab_dei_AmendmentFlag_CACDE3E669ED31FB56B4C614415D153A_terseLabel_en-US" xlink:label="lab_dei_AmendmentFlag_CACDE3E669ED31FB56B4C614415D153A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amendment Flag</link:label>
    <link:label id="lab_dei_AmendmentFlag_CACDE3E669ED31FB56B4C614415D153A_label_en-US" xlink:label="lab_dei_AmendmentFlag_CACDE3E669ED31FB56B4C614415D153A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Amendment Flag</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_AmendmentFlag" xlink:label="loc_dei_AmendmentFlag_CACDE3E669ED31FB56B4C614415D153A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_AmendmentFlag_CACDE3E669ED31FB56B4C614415D153A" xlink:to="lab_dei_AmendmentFlag_CACDE3E669ED31FB56B4C614415D153A" xlink:type="arc" />
    <link:label id="lab_dei_DocumentPeriodEndDate_3C0777575D7C45D6BB17C614415DFC33_terseLabel_en-US" xlink:label="lab_dei_DocumentPeriodEndDate_3C0777575D7C45D6BB17C614415DFC33" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Document Period End Date</link:label>
    <link:label id="lab_dei_DocumentPeriodEndDate_3C0777575D7C45D6BB17C614415DFC33_label_en-US" xlink:label="lab_dei_DocumentPeriodEndDate_3C0777575D7C45D6BB17C614415DFC33" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Document Period End Date</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_DocumentPeriodEndDate" xlink:label="loc_dei_DocumentPeriodEndDate_3C0777575D7C45D6BB17C614415DFC33" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentPeriodEndDate_3C0777575D7C45D6BB17C614415DFC33" xlink:to="lab_dei_DocumentPeriodEndDate_3C0777575D7C45D6BB17C614415DFC33" xlink:type="arc" />
    <link:label id="lab_dei_DocumentFiscalYearFocus_873E3096C65D828DD770C614415DDC9A_terseLabel_en-US" xlink:label="lab_dei_DocumentFiscalYearFocus_873E3096C65D828DD770C614415DDC9A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Document Fiscal Year Focus</link:label>
    <link:label id="lab_dei_DocumentFiscalYearFocus_873E3096C65D828DD770C614415DDC9A_label_en-US" xlink:label="lab_dei_DocumentFiscalYearFocus_873E3096C65D828DD770C614415DDC9A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Document Fiscal Year Focus</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_DocumentFiscalYearFocus" xlink:label="loc_dei_DocumentFiscalYearFocus_873E3096C65D828DD770C614415DDC9A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentFiscalYearFocus_873E3096C65D828DD770C614415DDC9A" xlink:to="lab_dei_DocumentFiscalYearFocus_873E3096C65D828DD770C614415DDC9A" xlink:type="arc" />
    <link:label id="lab_dei_DocumentFiscalPeriodFocus_89BACA92A9A2E37DCEB5C614415D6806_terseLabel_en-US" xlink:label="lab_dei_DocumentFiscalPeriodFocus_89BACA92A9A2E37DCEB5C614415D6806" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Document Fiscal Period Focus</link:label>
    <link:label id="lab_dei_DocumentFiscalPeriodFocus_89BACA92A9A2E37DCEB5C614415D6806_label_en-US" xlink:label="lab_dei_DocumentFiscalPeriodFocus_89BACA92A9A2E37DCEB5C614415D6806" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Document Fiscal Period Focus</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_DocumentFiscalPeriodFocus" xlink:label="loc_dei_DocumentFiscalPeriodFocus_89BACA92A9A2E37DCEB5C614415D6806" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentFiscalPeriodFocus_89BACA92A9A2E37DCEB5C614415D6806" xlink:to="lab_dei_DocumentFiscalPeriodFocus_89BACA92A9A2E37DCEB5C614415D6806" xlink:type="arc" />
    <link:label id="lab_dei_TradingSymbol_66EFC9317DEF4C181B0BC614415D722E_terseLabel_en-US" xlink:label="lab_dei_TradingSymbol_66EFC9317DEF4C181B0BC614415D722E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Trading Symbol</link:label>
    <link:label id="lab_dei_TradingSymbol_66EFC9317DEF4C181B0BC614415D722E_label_en-US" xlink:label="lab_dei_TradingSymbol_66EFC9317DEF4C181B0BC614415D722E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Trading Symbol</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_TradingSymbol" xlink:label="loc_dei_TradingSymbol_66EFC9317DEF4C181B0BC614415D722E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_TradingSymbol_66EFC9317DEF4C181B0BC614415D722E" xlink:to="lab_dei_TradingSymbol_66EFC9317DEF4C181B0BC614415D722E" xlink:type="arc" />
    <link:label id="lab_dei_EntityRegistrantName_196A54327B79D051EE8FC614415D454E_terseLabel_en-US" xlink:label="lab_dei_EntityRegistrantName_196A54327B79D051EE8FC614415D454E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Registrant Name</link:label>
    <link:label id="lab_dei_EntityRegistrantName_196A54327B79D051EE8FC614415D454E_label_en-US" xlink:label="lab_dei_EntityRegistrantName_196A54327B79D051EE8FC614415D454E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Registrant Name</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityRegistrantName" xlink:label="loc_dei_EntityRegistrantName_196A54327B79D051EE8FC614415D454E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityRegistrantName_196A54327B79D051EE8FC614415D454E" xlink:to="lab_dei_EntityRegistrantName_196A54327B79D051EE8FC614415D454E" xlink:type="arc" />
    <link:label id="lab_dei_EntityCentralIndexKey_5C1ECE2294DAF6385F97C614415D18C6_terseLabel_en-US" xlink:label="lab_dei_EntityCentralIndexKey_5C1ECE2294DAF6385F97C614415D18C6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Central Index Key</link:label>
    <link:label id="lab_dei_EntityCentralIndexKey_5C1ECE2294DAF6385F97C614415D18C6_label_en-US" xlink:label="lab_dei_EntityCentralIndexKey_5C1ECE2294DAF6385F97C614415D18C6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Central Index Key</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityCentralIndexKey" xlink:label="loc_dei_EntityCentralIndexKey_5C1ECE2294DAF6385F97C614415D18C6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityCentralIndexKey_5C1ECE2294DAF6385F97C614415D18C6" xlink:to="lab_dei_EntityCentralIndexKey_5C1ECE2294DAF6385F97C614415D18C6" xlink:type="arc" />
    <link:label id="lab_dei_CurrentFiscalYearEndDate_CB1B345DC0703AB58EC8C614415DF926_terseLabel_en-US" xlink:label="lab_dei_CurrentFiscalYearEndDate_CB1B345DC0703AB58EC8C614415DF926" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Current Fiscal Year End Date</link:label>
    <link:label id="lab_dei_CurrentFiscalYearEndDate_CB1B345DC0703AB58EC8C614415DF926_label_en-US" xlink:label="lab_dei_CurrentFiscalYearEndDate_CB1B345DC0703AB58EC8C614415DF926" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Current Fiscal Year End Date</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_CurrentFiscalYearEndDate" xlink:label="loc_dei_CurrentFiscalYearEndDate_CB1B345DC0703AB58EC8C614415DF926" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_CurrentFiscalYearEndDate_CB1B345DC0703AB58EC8C614415DF926" xlink:to="lab_dei_CurrentFiscalYearEndDate_CB1B345DC0703AB58EC8C614415DF926" xlink:type="arc" />
    <link:label id="lab_dei_EntityFilerCategory_76EE3B4AF2E21F8047D2C614415D9D3B_terseLabel_en-US" xlink:label="lab_dei_EntityFilerCategory_76EE3B4AF2E21F8047D2C614415D9D3B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Filer Category</link:label>
    <link:label id="lab_dei_EntityFilerCategory_76EE3B4AF2E21F8047D2C614415D9D3B_label_en-US" xlink:label="lab_dei_EntityFilerCategory_76EE3B4AF2E21F8047D2C614415D9D3B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Filer Category</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityFilerCategory" xlink:label="loc_dei_EntityFilerCategory_76EE3B4AF2E21F8047D2C614415D9D3B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityFilerCategory_76EE3B4AF2E21F8047D2C614415D9D3B" xlink:to="lab_dei_EntityFilerCategory_76EE3B4AF2E21F8047D2C614415D9D3B" xlink:type="arc" />
    <link:label id="lab_dei_EntitySmallBusiness_A93205780A8B6ACD283FC623CC4312BA_terseLabel_en-US" xlink:label="lab_dei_EntitySmallBusiness_A93205780A8B6ACD283FC623CC4312BA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Small Business</link:label>
    <link:label id="lab_dei_EntitySmallBusiness_A93205780A8B6ACD283FC623CC4312BA_label_en-US" xlink:label="lab_dei_EntitySmallBusiness_A93205780A8B6ACD283FC623CC4312BA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Small Business</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntitySmallBusiness" xlink:label="loc_dei_EntitySmallBusiness_A93205780A8B6ACD283FC623CC4312BA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntitySmallBusiness_A93205780A8B6ACD283FC623CC4312BA" xlink:to="lab_dei_EntitySmallBusiness_A93205780A8B6ACD283FC623CC4312BA" xlink:type="arc" />
    <link:label id="lab_dei_EntityEmergingGrowthCompany_68B05FE8FCD8F180178FC6240D8F35EF_terseLabel_en-US" xlink:label="lab_dei_EntityEmergingGrowthCompany_68B05FE8FCD8F180178FC6240D8F35EF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Emerging Growth Company</link:label>
    <link:label id="lab_dei_EntityEmergingGrowthCompany_68B05FE8FCD8F180178FC6240D8F35EF_label_en-US" xlink:label="lab_dei_EntityEmergingGrowthCompany_68B05FE8FCD8F180178FC6240D8F35EF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Emerging Growth Company</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityEmergingGrowthCompany" xlink:label="loc_dei_EntityEmergingGrowthCompany_68B05FE8FCD8F180178FC6240D8F35EF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityEmergingGrowthCompany_68B05FE8FCD8F180178FC6240D8F35EF" xlink:to="lab_dei_EntityEmergingGrowthCompany_68B05FE8FCD8F180178FC6240D8F35EF" xlink:type="arc" />
    <link:label id="lab_dei_EntityCommonStockSharesOutstanding_BE300D2A7A845DA2E169C614415D139B_terseLabel_en-US" xlink:label="lab_dei_EntityCommonStockSharesOutstanding_BE300D2A7A845DA2E169C614415D139B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Common Stock, Shares Outstanding</link:label>
    <link:label id="lab_dei_EntityCommonStockSharesOutstanding_BE300D2A7A845DA2E169C614415D139B_label_en-US" xlink:label="lab_dei_EntityCommonStockSharesOutstanding_BE300D2A7A845DA2E169C614415D139B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Common Stock, Shares Outstanding</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityCommonStockSharesOutstanding" xlink:label="loc_dei_EntityCommonStockSharesOutstanding_BE300D2A7A845DA2E169C614415D139B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityCommonStockSharesOutstanding_BE300D2A7A845DA2E169C614415D139B" xlink:to="lab_dei_EntityCommonStockSharesOutstanding_BE300D2A7A845DA2E169C614415D139B" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtAndCapitalLeasesDisclosuresTextBlock_5C048A1AA370B72E6910C56748BD68A5_terseLabel_en-US" xlink:label="lab_us-gaap_DebtAndCapitalLeasesDisclosuresTextBlock_5C048A1AA370B72E6910C56748BD68A5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Long-Term Debt</link:label>
    <link:label id="lab_us-gaap_DebtAndCapitalLeasesDisclosuresTextBlock_5C048A1AA370B72E6910C56748BD68A5_label_en-US" xlink:label="lab_us-gaap_DebtAndCapitalLeasesDisclosuresTextBlock_5C048A1AA370B72E6910C56748BD68A5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt and Capital Leases Disclosures [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtAndCapitalLeasesDisclosuresTextBlock" xlink:label="loc_us-gaap_DebtAndCapitalLeasesDisclosuresTextBlock_5C048A1AA370B72E6910C56748BD68A5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtAndCapitalLeasesDisclosuresTextBlock_5C048A1AA370B72E6910C56748BD68A5" xlink:to="lab_us-gaap_DebtAndCapitalLeasesDisclosuresTextBlock_5C048A1AA370B72E6910C56748BD68A5" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_BB9E8C2E9483D20B0A94C56747E2B6CA_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_BB9E8C2E9483D20B0A94C56747E2B6CA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Dividend yield (as a percent)</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_BB9E8C2E9483D20B0A94C56747E2B6CA_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_BB9E8C2E9483D20B0A94C56747E2B6CA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_BB9E8C2E9483D20B0A94C56747E2B6CA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_BB9E8C2E9483D20B0A94C56747E2B6CA" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_BB9E8C2E9483D20B0A94C56747E2B6CA" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_F705CD6055D3953E7CB0C56747E28705_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_F705CD6055D3953E7CB0C56747E28705" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Risk-free interest rate (as a percent)</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_F705CD6055D3953E7CB0C56747E28705_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_F705CD6055D3953E7CB0C56747E28705" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_F705CD6055D3953E7CB0C56747E28705" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_F705CD6055D3953E7CB0C56747E28705" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_F705CD6055D3953E7CB0C56747E28705" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_148008F047D481EF3199C56747E2BC1B_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_148008F047D481EF3199C56747E2BC1B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Stock price volatility (as a percent)</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_148008F047D481EF3199C56747E2BC1B_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_148008F047D481EF3199C56747E2BC1B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_148008F047D481EF3199C56747E2BC1B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_148008F047D481EF3199C56747E2BC1B" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_148008F047D481EF3199C56747E2BC1B" xlink:type="arc" />
    <link:label id="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_B407B9209C4CCC24F3BFC56747E24466_terseLabel_en-US" xlink:label="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_B407B9209C4CCC24F3BFC56747E24466" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Expected life (years)</link:label>
    <link:label id="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_B407B9209C4CCC24F3BFC56747E24466_label_en-US" xlink:label="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_B407B9209C4CCC24F3BFC56747E24466" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_B407B9209C4CCC24F3BFC56747E24466" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_B407B9209C4CCC24F3BFC56747E24466" xlink:to="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_B407B9209C4CCC24F3BFC56747E24466" xlink:type="arc" />
    <link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_C295A1F463E3929B352E94B751D03EFA_terseLabel_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_C295A1F463E3929B352E94B751D03EFA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash and cash equivalents</link:label>
    <link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_C295A1F463E3929B352E94B751D03EFA_label_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_C295A1F463E3929B352E94B751D03EFA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_C295A1F463E3929B352E94B751D03EFA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_C295A1F463E3929B352E94B751D03EFA" xlink:to="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_C295A1F463E3929B352E94B751D03EFA" xlink:type="arc" />
    <link:label id="lab_us-gaap_ReceivablesNetCurrent_23D4C406DB27FD9B5C4694AD9141FB25_terseLabel_en-US" xlink:label="lab_us-gaap_ReceivablesNetCurrent_23D4C406DB27FD9B5C4694AD9141FB25" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Receivables, net</link:label>
    <link:label id="lab_us-gaap_ReceivablesNetCurrent_23D4C406DB27FD9B5C4694AD9141FB25_label_en-US" xlink:label="lab_us-gaap_ReceivablesNetCurrent_23D4C406DB27FD9B5C4694AD9141FB25" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Receivables, Net, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ReceivablesNetCurrent" xlink:label="loc_us-gaap_ReceivablesNetCurrent_23D4C406DB27FD9B5C4694AD9141FB25" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ReceivablesNetCurrent_23D4C406DB27FD9B5C4694AD9141FB25" xlink:to="lab_us-gaap_ReceivablesNetCurrent_23D4C406DB27FD9B5C4694AD9141FB25" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherAssetsMiscellaneousCurrent_16E88F647F7A69B9856394AD91420F73_terseLabel_en-US" xlink:label="lab_us-gaap_OtherAssetsMiscellaneousCurrent_16E88F647F7A69B9856394AD91420F73" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Current assets - other</link:label>
    <link:label id="lab_us-gaap_OtherAssetsMiscellaneousCurrent_16E88F647F7A69B9856394AD91420F73_label_en-US" xlink:label="lab_us-gaap_OtherAssetsMiscellaneousCurrent_16E88F647F7A69B9856394AD91420F73" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Assets, Miscellaneous, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherAssetsMiscellaneousCurrent" xlink:label="loc_us-gaap_OtherAssetsMiscellaneousCurrent_16E88F647F7A69B9856394AD91420F73" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherAssetsMiscellaneousCurrent_16E88F647F7A69B9856394AD91420F73" xlink:to="lab_us-gaap_OtherAssetsMiscellaneousCurrent_16E88F647F7A69B9856394AD91420F73" xlink:type="arc" />
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentNet_1341DD74CE54FEC6C8C294AD9142AF47_terseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentNet_1341DD74CE54FEC6C8C294AD9142AF47" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Property, plant and equipment, net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_1341DD74CE54FEC6C8C294AD9142AF47" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet_1341DD74CE54FEC6C8C294AD9142AF47" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentNet_1341DD74CE54FEC6C8C294AD9142AF47" xlink:type="arc" />
    <link:label id="lab_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_4C1DC9BE4887E1B3125294AD914200B3_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_4C1DC9BE4887E1B3125294AD914200B3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Investment in subsidiaries</link:label>
    <link:label id="lab_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_4C1DC9BE4887E1B3125294AD914200B3_label_en-US" xlink:label="lab_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_4C1DC9BE4887E1B3125294AD914200B3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures" xlink:label="loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_4C1DC9BE4887E1B3125294AD914200B3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_4C1DC9BE4887E1B3125294AD914200B3" xlink:to="lab_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_4C1DC9BE4887E1B3125294AD914200B3" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherAssetsNoncurrent_CF124E42128FD359CCB594AD9143796C_verboseLabel_en-US" xlink:label="lab_us-gaap_OtherAssetsNoncurrent_CF124E42128FD359CCB594AD9143796C" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Other long-term assets</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherAssetsNoncurrent" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_CF124E42128FD359CCB594AD9143796C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherAssetsNoncurrent_CF124E42128FD359CCB594AD9143796C" xlink:to="lab_us-gaap_OtherAssetsNoncurrent_CF124E42128FD359CCB594AD9143796C" xlink:type="arc" />
    <link:label id="lab_us-gaap_LiabilitiesCurrent_02282FD358693F39CA3B94AD9143BE0C_terseLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesCurrent_02282FD358693F39CA3B94AD9143BE0C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Current liabilities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:label="loc_us-gaap_LiabilitiesCurrent_02282FD358693F39CA3B94AD9143BE0C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesCurrent_02282FD358693F39CA3B94AD9143BE0C" xlink:to="lab_us-gaap_LiabilitiesCurrent_02282FD358693F39CA3B94AD9143BE0C" xlink:type="arc" />
    <link:label id="lab_wab_IntercompanyLoans_E3C5180410D7098E130794AD9143DC52_terseLabel_en-US" xlink:label="lab_wab_IntercompanyLoans_E3C5180410D7098E130794AD9143DC52" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Inter-company</link:label>
    <link:label id="lab_wab_IntercompanyLoans_E3C5180410D7098E130794AD9143DC52_label_en-US" xlink:label="lab_wab_IntercompanyLoans_E3C5180410D7098E130794AD9143DC52" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Intercompany Loans</link:label>
    <link:label id="lab_wab_IntercompanyLoans_E3C5180410D7098E130794AD9143DC52_documentation_en-US" xlink:label="lab_wab_IntercompanyLoans_E3C5180410D7098E130794AD9143DC52" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Intercompany Loans</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_IntercompanyLoans" xlink:label="loc_wab_IntercompanyLoans_E3C5180410D7098E130794AD9143DC52" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_IntercompanyLoans_E3C5180410D7098E130794AD9143DC52" xlink:to="lab_wab_IntercompanyLoans_E3C5180410D7098E130794AD9143DC52" xlink:type="arc" />
    <link:label id="lab_us-gaap_LiabilitiesOtherThanLongtermDebtNoncurrent_C3748550FD1DC3E742FE94AD91445B63_terseLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesOtherThanLongtermDebtNoncurrent_C3748550FD1DC3E742FE94AD91445B63" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Long-term liabilities - other</link:label>
    <link:label id="lab_us-gaap_LiabilitiesOtherThanLongtermDebtNoncurrent_C3748550FD1DC3E742FE94AD91445B63_label_en-US" xlink:label="lab_us-gaap_LiabilitiesOtherThanLongtermDebtNoncurrent_C3748550FD1DC3E742FE94AD91445B63" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liabilities, Other than Long-term Debt, Noncurrent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LiabilitiesOtherThanLongtermDebtNoncurrent" xlink:label="loc_us-gaap_LiabilitiesOtherThanLongtermDebtNoncurrent_C3748550FD1DC3E742FE94AD91445B63" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesOtherThanLongtermDebtNoncurrent_C3748550FD1DC3E742FE94AD91445B63" xlink:to="lab_us-gaap_LiabilitiesOtherThanLongtermDebtNoncurrent_C3748550FD1DC3E742FE94AD91445B63" xlink:type="arc" />
    <link:label id="lab_us-gaap_StockholdersEquity_0A09D271066D202589B694AD91445624_terseLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquity_0A09D271066D202589B694AD91445624" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Shareholders' equity</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="loc_us-gaap_StockholdersEquity_0A09D271066D202589B694AD91445624" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockholdersEquity_0A09D271066D202589B694AD91445624" xlink:to="lab_us-gaap_StockholdersEquity_0A09D271066D202589B694AD91445624" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_0FB3BD2E3D1A183ECD59C567486F6BF3_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_0FB3BD2E3D1A183ECD59C567486F6BF3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Options</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_0FB3BD2E3D1A183ECD59C567486F6BF3_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_0FB3BD2E3D1A183ECD59C567486F6BF3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_0FB3BD2E3D1A183ECD59C567486F6BF3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_0FB3BD2E3D1A183ECD59C567486F6BF3" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_0FB3BD2E3D1A183ECD59C567486F6BF3" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_2FE6DFDF69114E9B7BA5C567486FE5E8_periodStartLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_2FE6DFDF69114E9B7BA5C567486FE5E8" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Beginning balance (in shares)</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_2FE6DFDF69114E9B7BA5C567486FE5E8_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_2FE6DFDF69114E9B7BA5C567486FE5E8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_2FE6DFDF69114E9B7BA5C567486FE5E8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_2FE6DFDF69114E9B7BA5C567486FE5E8" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_2FE6DFDF69114E9B7BA5C567486FE5E8" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod_90598B52C7FAC30223BBC567486FE5D5_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod_90598B52C7FAC30223BBC567486FE5D5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Granted (in shares)</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod_90598B52C7FAC30223BBC567486FE5D5_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod_90598B52C7FAC30223BBC567486FE5D5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod_90598B52C7FAC30223BBC567486FE5D5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod_90598B52C7FAC30223BBC567486FE5D5" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod_90598B52C7FAC30223BBC567486FE5D5" xlink:type="arc" />
    <link:label id="lab_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_8F869AB4949AB6C95C9EC567486FDA48_negatedLabel_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_8F869AB4949AB6C95C9EC567486FDA48" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Exercised (in shares)</link:label>
    <link:label id="lab_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_8F869AB4949AB6C95C9EC567486FDA48_label_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_8F869AB4949AB6C95C9EC567486FDA48" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_8F869AB4949AB6C95C9EC567486FDA48" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_8F869AB4949AB6C95C9EC567486FDA48" xlink:to="lab_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_8F869AB4949AB6C95C9EC567486FDA48" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod_AC6F633B0716CE8F9C8CC567486F6B42_negatedLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod_AC6F633B0716CE8F9C8CC567486F6B42" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Canceled (in shares)</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod_AC6F633B0716CE8F9C8CC567486F6B42_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod_AC6F633B0716CE8F9C8CC567486F6B42" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod_AC6F633B0716CE8F9C8CC567486F6B42" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod_AC6F633B0716CE8F9C8CC567486F6B42" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod_AC6F633B0716CE8F9C8CC567486F6B42" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_506A2DD162FBC1430C5EC567486F9F8C_periodEndLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_506A2DD162FBC1430C5EC567486F9F8C" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Ending balance (in shares)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_506A2DD162FBC1430C5EC567486F9F8C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_506A2DD162FBC1430C5EC567486F9F8C" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_506A2DD162FBC1430C5EC567486F9F8C" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_96A02FE9D835DC6C36CBC567486F4A19_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_96A02FE9D835DC6C36CBC567486F4A19" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Exercisable at period end (in shares)</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_96A02FE9D835DC6C36CBC567486F4A19_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_96A02FE9D835DC6C36CBC567486F4A19" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_96A02FE9D835DC6C36CBC567486F4A19" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_96A02FE9D835DC6C36CBC567486F4A19" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_96A02FE9D835DC6C36CBC567486F4A19" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_E3110C034B4B60F61224C567486FCD66_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_E3110C034B4B60F61224C567486FCD66" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Weighted Average Exercise Price</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_E3110C034B4B60F61224C567486FCD66_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_E3110C034B4B60F61224C567486FCD66" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_E3110C034B4B60F61224C567486FCD66" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_E3110C034B4B60F61224C567486FCD66" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_E3110C034B4B60F61224C567486FCD66" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_E28B0C2A712ED822ACE4C567486F3F89_periodStartLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_E28B0C2A712ED822ACE4C567486F3F89" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Beginning balance (in dollars per share)</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_E28B0C2A712ED822ACE4C567486F3F89_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_E28B0C2A712ED822ACE4C567486F3F89" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_E28B0C2A712ED822ACE4C567486F3F89" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_E28B0C2A712ED822ACE4C567486F3F89" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_E28B0C2A712ED822ACE4C567486F3F89" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_70C6D1CBC12A1C242FCAC567486FB1FB_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_70C6D1CBC12A1C242FCAC567486FB1FB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Granted (in dollars per share)</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_70C6D1CBC12A1C242FCAC567486FB1FB_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_70C6D1CBC12A1C242FCAC567486FB1FB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_70C6D1CBC12A1C242FCAC567486FB1FB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_70C6D1CBC12A1C242FCAC567486FB1FB" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_70C6D1CBC12A1C242FCAC567486FB1FB" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_06BAD827837EAF8E6694C567487F59B4_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_06BAD827837EAF8E6694C567487F59B4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Exercised (in dollars per share)</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_06BAD827837EAF8E6694C567487F59B4_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_06BAD827837EAF8E6694C567487F59B4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_06BAD827837EAF8E6694C567487F59B4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_06BAD827837EAF8E6694C567487F59B4" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_06BAD827837EAF8E6694C567487F59B4" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice_E5CAF0AD8C9BED508D83C567487F0B9A_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice_E5CAF0AD8C9BED508D83C567487F0B9A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Canceled (in dollars per share)</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice_E5CAF0AD8C9BED508D83C567487F0B9A_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice_E5CAF0AD8C9BED508D83C567487F0B9A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice_E5CAF0AD8C9BED508D83C567487F0B9A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice_E5CAF0AD8C9BED508D83C567487F0B9A" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice_E5CAF0AD8C9BED508D83C567487F0B9A" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_6F8C0C52DF416F95A0AFC567487FF5EA_periodEndLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_6F8C0C52DF416F95A0AFC567487FF5EA" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Ending balance (in dollars per share)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_6F8C0C52DF416F95A0AFC567487FF5EA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_6F8C0C52DF416F95A0AFC567487FF5EA" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_6F8C0C52DF416F95A0AFC567487FF5EA" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_6CB32E578253D3296E90C567487F02F2_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_6CB32E578253D3296E90C567487F02F2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Exercisable (in dollars per share)</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_6CB32E578253D3296E90C567487F02F2_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_6CB32E578253D3296E90C567487F02F2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_6CB32E578253D3296E90C567487F02F2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_6CB32E578253D3296E90C567487F02F2" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_6CB32E578253D3296E90C567487F02F2" xlink:type="arc" />
    <link:label id="lab_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageRemainingContractualTermAbstract_6B95994F6E9BFC58B227C567487F6DF6_terseLabel_en-US" xlink:label="lab_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageRemainingContractualTermAbstract_6B95994F6E9BFC58B227C567487F6DF6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Weighted Average Remaining Contractual Life</link:label>
    <link:label id="lab_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageRemainingContractualTermAbstract_6B95994F6E9BFC58B227C567487F6DF6_label_en-US" xlink:label="lab_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageRemainingContractualTermAbstract_6B95994F6E9BFC58B227C567487F6DF6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share Based Compensation Arrangement By Share Based Payment Award Options Weighted Average Remaining Contractual Term [Abstract]</link:label>
    <link:label id="lab_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageRemainingContractualTermAbstract_6B95994F6E9BFC58B227C567487F6DF6_documentation_en-US" xlink:label="lab_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageRemainingContractualTermAbstract_6B95994F6E9BFC58B227C567487F6DF6" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US" />
    <link:loc xlink:href="wab-20190331.xsd#wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageRemainingContractualTermAbstract" xlink:label="loc_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageRemainingContractualTermAbstract_6B95994F6E9BFC58B227C567487F6DF6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageRemainingContractualTermAbstract_6B95994F6E9BFC58B227C567487F6DF6" xlink:to="lab_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageRemainingContractualTermAbstract_6B95994F6E9BFC58B227C567487F6DF6" xlink:type="arc" />
    <link:label id="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2_C83FA9E03495D0EC7F93C567487F61EB_terseLabel_en-US" xlink:label="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2_C83FA9E03495D0EC7F93C567487F61EB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Outstanding, weighted average remaining contractual life (in years)</link:label>
    <link:label id="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2_C83FA9E03495D0EC7F93C567487F61EB_label_en-US" xlink:label="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2_C83FA9E03495D0EC7F93C567487F61EB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2_C83FA9E03495D0EC7F93C567487F61EB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2_C83FA9E03495D0EC7F93C567487F61EB" xlink:to="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2_C83FA9E03495D0EC7F93C567487F61EB" xlink:type="arc" />
    <link:label id="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_CD9BEB0F342BBA21798DC567487FD107_terseLabel_en-US" xlink:label="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_CD9BEB0F342BBA21798DC567487FD107" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Exercisable weighted average remaining contractual life (in years)</link:label>
    <link:label id="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_CD9BEB0F342BBA21798DC567487FD107_label_en-US" xlink:label="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_CD9BEB0F342BBA21798DC567487FD107" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_CD9BEB0F342BBA21798DC567487FD107" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_CD9BEB0F342BBA21798DC567487FD107" xlink:to="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_CD9BEB0F342BBA21798DC567487FD107" xlink:type="arc" />
    <link:label id="lab_wab_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsNonvestedAggregateIntrinsicValueRollForward_FA3F02507D9FF78A36C0C567487F57CD_terseLabel_en-US" xlink:label="lab_wab_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsNonvestedAggregateIntrinsicValueRollForward_FA3F02507D9FF78A36C0C567487F57CD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Aggregate Intrinsic Value</link:label>
    <link:label id="lab_wab_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsNonvestedAggregateIntrinsicValueRollForward_FA3F02507D9FF78A36C0C567487F57CD_label_en-US" xlink:label="lab_wab_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsNonvestedAggregateIntrinsicValueRollForward_FA3F02507D9FF78A36C0C567487F57CD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments, Nonvested, Aggregate Intrinsic Value [Roll Forward]</link:label>
    <link:label id="lab_wab_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsNonvestedAggregateIntrinsicValueRollForward_FA3F02507D9FF78A36C0C567487F57CD_documentation_en-US" xlink:label="lab_wab_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsNonvestedAggregateIntrinsicValueRollForward_FA3F02507D9FF78A36C0C567487F57CD" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments, Nonvested, Aggregate Intrinsic Value [Roll Forward]</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsNonvestedAggregateIntrinsicValueRollForward" xlink:label="loc_wab_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsNonvestedAggregateIntrinsicValueRollForward_FA3F02507D9FF78A36C0C567487F57CD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsNonvestedAggregateIntrinsicValueRollForward_FA3F02507D9FF78A36C0C567487F57CD" xlink:to="lab_wab_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsNonvestedAggregateIntrinsicValueRollForward_FA3F02507D9FF78A36C0C567487F57CD" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_761F4F5FAED28C57C146C567487F6908_periodStartLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_761F4F5FAED28C57C146C567487F6908" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Beginning balance</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_761F4F5FAED28C57C146C567487F6908_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_761F4F5FAED28C57C146C567487F6908" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_761F4F5FAED28C57C146C567487F6908" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_761F4F5FAED28C57C146C567487F6908" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_761F4F5FAED28C57C146C567487F6908" xlink:type="arc" />
    <link:label id="lab_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantedIntrinsicValue_7C2C05ADDAA3EF260FF5C567487F4675_terseLabel_en-US" xlink:label="lab_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantedIntrinsicValue_7C2C05ADDAA3EF260FF5C567487F4675" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Granted</link:label>
    <link:label id="lab_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantedIntrinsicValue_7C2C05ADDAA3EF260FF5C567487F4675_label_en-US" xlink:label="lab_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantedIntrinsicValue_7C2C05ADDAA3EF260FF5C567487F4675" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share Based Compensation Arrangement By Share Based Payment Award Options Granted Intrinsic Value</link:label>
    <link:label id="lab_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantedIntrinsicValue_7C2C05ADDAA3EF260FF5C567487F4675_documentation_en-US" xlink:label="lab_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantedIntrinsicValue_7C2C05ADDAA3EF260FF5C567487F4675" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Intrinsic value of granted options for the period presented.</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantedIntrinsicValue" xlink:label="loc_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantedIntrinsicValue_7C2C05ADDAA3EF260FF5C567487F4675" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantedIntrinsicValue_7C2C05ADDAA3EF260FF5C567487F4675" xlink:to="lab_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantedIntrinsicValue_7C2C05ADDAA3EF260FF5C567487F4675" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_F3F88F8C6C9FBD1F927BC567487FA099_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_F3F88F8C6C9FBD1F927BC567487FA099" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Exercised</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_F3F88F8C6C9FBD1F927BC567487FA099_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_F3F88F8C6C9FBD1F927BC567487FA099" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_F3F88F8C6C9FBD1F927BC567487FA099" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_F3F88F8C6C9FBD1F927BC567487FA099" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_F3F88F8C6C9FBD1F927BC567487FA099" xlink:type="arc" />
    <link:label id="lab_wab_ShareBasedCompensationArrangementbySharebasedPaymentAwardOptionsCanceledIntrinsicValue_557F9B17349EEF82FA1CC567487F1A32_terseLabel_en-US" xlink:label="lab_wab_ShareBasedCompensationArrangementbySharebasedPaymentAwardOptionsCanceledIntrinsicValue_557F9B17349EEF82FA1CC567487F1A32" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Canceled</link:label>
    <link:label id="lab_wab_ShareBasedCompensationArrangementbySharebasedPaymentAwardOptionsCanceledIntrinsicValue_557F9B17349EEF82FA1CC567487F1A32_label_en-US" xlink:label="lab_wab_ShareBasedCompensationArrangementbySharebasedPaymentAwardOptionsCanceledIntrinsicValue_557F9B17349EEF82FA1CC567487F1A32" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share Based Compensation Arrangement by Share-based Payment Award, Options, Canceled, Intrinsic Value</link:label>
    <link:label id="lab_wab_ShareBasedCompensationArrangementbySharebasedPaymentAwardOptionsCanceledIntrinsicValue_557F9B17349EEF82FA1CC567487F1A32_documentation_en-US" xlink:label="lab_wab_ShareBasedCompensationArrangementbySharebasedPaymentAwardOptionsCanceledIntrinsicValue_557F9B17349EEF82FA1CC567487F1A32" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Share Based Compensation Arrangement by Share-based Payment Award, Options, Canceled, Intrinsic Value</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_ShareBasedCompensationArrangementbySharebasedPaymentAwardOptionsCanceledIntrinsicValue" xlink:label="loc_wab_ShareBasedCompensationArrangementbySharebasedPaymentAwardOptionsCanceledIntrinsicValue_557F9B17349EEF82FA1CC567487F1A32" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_ShareBasedCompensationArrangementbySharebasedPaymentAwardOptionsCanceledIntrinsicValue_557F9B17349EEF82FA1CC567487F1A32" xlink:to="lab_wab_ShareBasedCompensationArrangementbySharebasedPaymentAwardOptionsCanceledIntrinsicValue_557F9B17349EEF82FA1CC567487F1A32" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_67F3DA6840C11C158C2DC567487F419D_periodEndLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_67F3DA6840C11C158C2DC567487F419D" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Ending balance</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_67F3DA6840C11C158C2DC567487F419D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_67F3DA6840C11C158C2DC567487F419D" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_67F3DA6840C11C158C2DC567487F419D" xlink:type="arc" />
    <link:label id="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_35BDE5F4E1CC00DFC71AC567487F9F20_terseLabel_en-US" xlink:label="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_35BDE5F4E1CC00DFC71AC567487F9F20" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Exercisable</link:label>
    <link:label id="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_35BDE5F4E1CC00DFC71AC567487F9F20_label_en-US" xlink:label="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_35BDE5F4E1CC00DFC71AC567487F9F20" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_35BDE5F4E1CC00DFC71AC567487F9F20" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_35BDE5F4E1CC00DFC71AC567487F9F20" xlink:to="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_35BDE5F4E1CC00DFC71AC567487F9F20" xlink:type="arc" />
    <link:label id="lab_us-gaap_RevenueFromContractWithCustomerTextBlock_8902A047668C6561D375C567494DAAD8_terseLabel_en-US" xlink:label="lab_us-gaap_RevenueFromContractWithCustomerTextBlock_8902A047668C6561D375C567494DAAD8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Contract Assets and Contract Liabilities</link:label>
    <link:label id="lab_us-gaap_RevenueFromContractWithCustomerTextBlock_8902A047668C6561D375C567494DAAD8_label_en-US" xlink:label="lab_us-gaap_RevenueFromContractWithCustomerTextBlock_8902A047668C6561D375C567494DAAD8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenue from Contract with Customer [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevenueFromContractWithCustomerTextBlock" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerTextBlock_8902A047668C6561D375C567494DAAD8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RevenueFromContractWithCustomerTextBlock_8902A047668C6561D375C567494DAAD8" xlink:to="lab_us-gaap_RevenueFromContractWithCustomerTextBlock_8902A047668C6561D375C567494DAAD8" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfGoodwillTable_80E50131C59689183A38C567494D54BC_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfGoodwillTable_80E50131C59689183A38C567494D54BC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule Of Goodwill [Table]</link:label>
    <link:label id="lab_us-gaap_ScheduleOfGoodwillTable_80E50131C59689183A38C567494D54BC_label_en-US" xlink:label="lab_us-gaap_ScheduleOfGoodwillTable_80E50131C59689183A38C567494D54BC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Goodwill [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfGoodwillTable" xlink:label="loc_us-gaap_ScheduleOfGoodwillTable_80E50131C59689183A38C567494D54BC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_80E50131C59689183A38C567494D54BC" xlink:to="lab_us-gaap_ScheduleOfGoodwillTable_80E50131C59689183A38C567494D54BC" xlink:type="arc" />
    <link:label id="lab_us-gaap_GoodwillLineItems_931C9468CD435AF6CE42C567494DD783_terseLabel_en-US" xlink:label="lab_us-gaap_GoodwillLineItems_931C9468CD435AF6CE42C567494DD783" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Goodwill [Line Items]</link:label>
    <link:label id="lab_us-gaap_GoodwillLineItems_931C9468CD435AF6CE42C567494DD783_label_en-US" xlink:label="lab_us-gaap_GoodwillLineItems_931C9468CD435AF6CE42C567494DD783" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GoodwillLineItems" xlink:label="loc_us-gaap_GoodwillLineItems_931C9468CD435AF6CE42C567494DD783" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GoodwillLineItems_931C9468CD435AF6CE42C567494DD783" xlink:to="lab_us-gaap_GoodwillLineItems_931C9468CD435AF6CE42C567494DD783" xlink:type="arc" />
    <link:label id="lab_us-gaap_GoodwillRollForward_BAC13EADF036C64615C2C567494DC517_terseLabel_en-US" xlink:label="lab_us-gaap_GoodwillRollForward_BAC13EADF036C64615C2C567494DC517" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Goodwill [Roll Forward]</link:label>
    <link:label id="lab_us-gaap_GoodwillRollForward_BAC13EADF036C64615C2C567494DC517_label_en-US" xlink:label="lab_us-gaap_GoodwillRollForward_BAC13EADF036C64615C2C567494DC517" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill [Roll Forward]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GoodwillRollForward" xlink:label="loc_us-gaap_GoodwillRollForward_BAC13EADF036C64615C2C567494DC517" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GoodwillRollForward_BAC13EADF036C64615C2C567494DC517" xlink:to="lab_us-gaap_GoodwillRollForward_BAC13EADF036C64615C2C567494DC517" xlink:type="arc" />
    <link:label id="lab_us-gaap_Goodwill_824689FD553A7D19985DC56749A16D4D_periodStartLabel_en-US" xlink:label="lab_us-gaap_Goodwill_824689FD553A7D19985DC56749A16D4D" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Beginning balance</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaap_Goodwill_824689FD553A7D19985DC56749A16D4D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Goodwill_824689FD553A7D19985DC56749A16D4D" xlink:to="lab_us-gaap_Goodwill_824689FD553A7D19985DC56749A16D4D" xlink:type="arc" />
    <link:label id="lab_us-gaap_GoodwillPurchaseAccountingAdjustments_3CF170EBA5CC9937A94DC56749A25CDD_terseLabel_en-US" xlink:label="lab_us-gaap_GoodwillPurchaseAccountingAdjustments_3CF170EBA5CC9937A94DC56749A25CDD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Additions</link:label>
    <link:label id="lab_us-gaap_GoodwillPurchaseAccountingAdjustments_3CF170EBA5CC9937A94DC56749A25CDD_label_en-US" xlink:label="lab_us-gaap_GoodwillPurchaseAccountingAdjustments_3CF170EBA5CC9937A94DC56749A25CDD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill, Purchase Accounting Adjustments</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GoodwillPurchaseAccountingAdjustments" xlink:label="loc_us-gaap_GoodwillPurchaseAccountingAdjustments_3CF170EBA5CC9937A94DC56749A25CDD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GoodwillPurchaseAccountingAdjustments_3CF170EBA5CC9937A94DC56749A25CDD" xlink:to="lab_us-gaap_GoodwillPurchaseAccountingAdjustments_3CF170EBA5CC9937A94DC56749A25CDD" xlink:type="arc" />
    <link:label id="lab_us-gaap_GoodwillForeignCurrencyTranslationGainLoss_BFF7309B20087F5A8CC8C56749A2978B_terseLabel_en-US" xlink:label="lab_us-gaap_GoodwillForeignCurrencyTranslationGainLoss_BFF7309B20087F5A8CC8C56749A2978B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Foreign currency impact</link:label>
    <link:label id="lab_us-gaap_GoodwillForeignCurrencyTranslationGainLoss_BFF7309B20087F5A8CC8C56749A2978B_label_en-US" xlink:label="lab_us-gaap_GoodwillForeignCurrencyTranslationGainLoss_BFF7309B20087F5A8CC8C56749A2978B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill, Foreign Currency Translation Gain (Loss)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GoodwillForeignCurrencyTranslationGainLoss" xlink:label="loc_us-gaap_GoodwillForeignCurrencyTranslationGainLoss_BFF7309B20087F5A8CC8C56749A2978B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GoodwillForeignCurrencyTranslationGainLoss_BFF7309B20087F5A8CC8C56749A2978B" xlink:to="lab_us-gaap_GoodwillForeignCurrencyTranslationGainLoss_BFF7309B20087F5A8CC8C56749A2978B" xlink:type="arc" />
    <link:label id="lab_us-gaap_Goodwill_DA57E750DFBD5A595861C56749A2A678_periodEndLabel_en-US" xlink:label="lab_us-gaap_Goodwill_DA57E750DFBD5A595861C56749A2A678" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Ending balance</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaap_Goodwill_DA57E750DFBD5A595861C56749A2A678" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Goodwill_DA57E750DFBD5A595861C56749A2A678" xlink:to="lab_us-gaap_Goodwill_DA57E750DFBD5A595861C56749A2A678" xlink:type="arc" />
    <link:label id="lab_us-gaap_StockholdersEquityNoteAbstract_EED0F9320AC5D8021B7B7536A712ED62_label_en-US" xlink:label="lab_us-gaap_StockholdersEquityNoteAbstract_EED0F9320AC5D8021B7B7536A712ED62" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stockholders' Equity Note [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquityNoteAbstract" xlink:label="loc_us-gaap_StockholdersEquityNoteAbstract_EED0F9320AC5D8021B7B7536A712ED62" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockholdersEquityNoteAbstract_EED0F9320AC5D8021B7B7536A712ED62" xlink:to="lab_us-gaap_StockholdersEquityNoteAbstract_EED0F9320AC5D8021B7B7536A712ED62" xlink:type="arc" />
    <link:label id="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_B38C7A74B85A5A603BEE7536A712B6EB_terseLabel_en-US" xlink:label="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_B38C7A74B85A5A603BEE7536A712B6EB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Reclassification Out Of Accumulated Other Comprehensive Income [Table]</link:label>
    <link:label id="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_B38C7A74B85A5A603BEE7536A712B6EB_label_en-US" xlink:label="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_B38C7A74B85A5A603BEE7536A712B6EB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Reclassification out of Accumulated Other Comprehensive Income [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_B38C7A74B85A5A603BEE7536A712B6EB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_B38C7A74B85A5A603BEE7536A712B6EB" xlink:to="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_B38C7A74B85A5A603BEE7536A712B6EB" xlink:type="arc" />
    <link:label id="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_048B1AB49469937FA5347536A712AD33_terseLabel_en-US" xlink:label="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_048B1AB49469937FA5347536A712AD33" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Reclassification Out Of Accumulated Other Comprehensive Income [Axis]</link:label>
    <link:label id="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_048B1AB49469937FA5347536A712AD33_label_en-US" xlink:label="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_048B1AB49469937FA5347536A712AD33" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Reclassification out of Accumulated Other Comprehensive Income [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_048B1AB49469937FA5347536A712AD33" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_048B1AB49469937FA5347536A712AD33" xlink:to="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_048B1AB49469937FA5347536A712AD33" xlink:type="arc" />
    <link:label id="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_6F8B2B175A3F7BA2A3C77536A7122B9E_terseLabel_en-US" xlink:label="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_6F8B2B175A3F7BA2A3C77536A7122B9E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Reclassification Out Of Accumulated Other Comprehensive Income [Domain]</link:label>
    <link:label id="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_6F8B2B175A3F7BA2A3C77536A7122B9E_label_en-US" xlink:label="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_6F8B2B175A3F7BA2A3C77536A7122B9E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Reclassification out of Accumulated Other Comprehensive Income [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_6F8B2B175A3F7BA2A3C77536A7122B9E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_6F8B2B175A3F7BA2A3C77536A7122B9E" xlink:to="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_6F8B2B175A3F7BA2A3C77536A7122B9E" xlink:type="arc" />
    <link:label id="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember_A8365141BC6A15B7D2317536A712029C_terseLabel_en-US" xlink:label="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember_A8365141BC6A15B7D2317536A712029C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Reclassification out of Accumulated Other Comprehensive Income</link:label>
    <link:label id="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember_A8365141BC6A15B7D2317536A712029C_label_en-US" xlink:label="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember_A8365141BC6A15B7D2317536A712029C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Reclassification out of Accumulated Other Comprehensive Income [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember_A8365141BC6A15B7D2317536A712029C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember_A8365141BC6A15B7D2317536A712029C" xlink:to="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember_A8365141BC6A15B7D2317536A712029C" xlink:type="arc" />
    <link:label id="lab_us-gaap_StatementEquityComponentsAxis_C7ECE341457C34307A9B7536A712C885_terseLabel_en-US" xlink:label="lab_us-gaap_StatementEquityComponentsAxis_C7ECE341457C34307A9B7536A712C885" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Equity Components [Axis]</link:label>
    <link:label id="lab_us-gaap_StatementEquityComponentsAxis_C7ECE341457C34307A9B7536A712C885_label_en-US" xlink:label="lab_us-gaap_StatementEquityComponentsAxis_C7ECE341457C34307A9B7536A712C885" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Equity Components [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_C7ECE341457C34307A9B7536A712C885" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_C7ECE341457C34307A9B7536A712C885" xlink:to="lab_us-gaap_StatementEquityComponentsAxis_C7ECE341457C34307A9B7536A712C885" xlink:type="arc" />
    <link:label id="lab_us-gaap_EquityComponentDomain_2BEE14E0FC6B6DF7DAE27536A7129807_terseLabel_en-US" xlink:label="lab_us-gaap_EquityComponentDomain_2BEE14E0FC6B6DF7DAE27536A7129807" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Equity Component [Domain]</link:label>
    <link:label id="lab_us-gaap_EquityComponentDomain_2BEE14E0FC6B6DF7DAE27536A7129807_label_en-US" xlink:label="lab_us-gaap_EquityComponentDomain_2BEE14E0FC6B6DF7DAE27536A7129807" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Equity Component [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_2BEE14E0FC6B6DF7DAE27536A7129807" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EquityComponentDomain_2BEE14E0FC6B6DF7DAE27536A7129807" xlink:to="lab_us-gaap_EquityComponentDomain_2BEE14E0FC6B6DF7DAE27536A7129807" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_EE9CE599E887BC03B2577536A7126B3A_terseLabel_en-US" xlink:label="lab_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_EE9CE599E887BC03B2577536A7126B3A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Pension and post retirement benefit plans</link:label>
    <link:label id="lab_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_EE9CE599E887BC03B2577536A7126B3A_label_en-US" xlink:label="lab_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_EE9CE599E887BC03B2577536A7126B3A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_EE9CE599E887BC03B2577536A7126B3A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_EE9CE599E887BC03B2577536A7126B3A" xlink:to="lab_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_EE9CE599E887BC03B2577536A7126B3A" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember_F43998B71AD8E9983EBC7536A712E6F1_terseLabel_en-US" xlink:label="lab_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember_F43998B71AD8E9983EBC7536A712E6F1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amortization of initial net obligation and prior service cost</link:label>
    <link:label id="lab_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember_F43998B71AD8E9983EBC7536A712E6F1_label_en-US" xlink:label="lab_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember_F43998B71AD8E9983EBC7536A712E6F1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accumulated Defined Benefit Plans Adjustment, Net Prior Service Attributable to Parent [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember_F43998B71AD8E9983EBC7536A712E6F1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember_F43998B71AD8E9983EBC7536A712E6F1" xlink:to="lab_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember_F43998B71AD8E9983EBC7536A712E6F1" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember_48CB88CAB450ADF4C3B57536A7122DFE_terseLabel_en-US" xlink:label="lab_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember_48CB88CAB450ADF4C3B57536A7122DFE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amortization of net loss</link:label>
    <link:label id="lab_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember_48CB88CAB450ADF4C3B57536A7122DFE_label_en-US" xlink:label="lab_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember_48CB88CAB450ADF4C3B57536A7122DFE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember_48CB88CAB450ADF4C3B57536A7122DFE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember_48CB88CAB450ADF4C3B57536A7122DFE" xlink:to="lab_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember_48CB88CAB450ADF4C3B57536A7122DFE" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember_D04BC63EE5E328B99AE57536A712E122_terseLabel_en-US" xlink:label="lab_us-gaap_AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember_D04BC63EE5E328B99AE57536A712E122" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Derivative contracts</link:label>
    <link:label id="lab_us-gaap_AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember_D04BC63EE5E328B99AE57536A712E122_label_en-US" xlink:label="lab_us-gaap_AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember_D04BC63EE5E328B99AE57536A712E122" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember" xlink:label="loc_us-gaap_AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember_D04BC63EE5E328B99AE57536A712E122" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember_D04BC63EE5E328B99AE57536A712E122" xlink:to="lab_us-gaap_AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember_D04BC63EE5E328B99AE57536A712E122" xlink:type="arc" />
    <link:label id="lab_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeOnDerivativesLineItems_135D4C37B0D340FFAB067536A712CA5E_terseLabel_en-US" xlink:label="lab_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeOnDerivativesLineItems_135D4C37B0D340FFAB067536A712CA5E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Reclassification Adjustment Out Of Accumulated Other Comprehensive Income On Derivatives [Line Items]</link:label>
    <link:label id="lab_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeOnDerivativesLineItems_135D4C37B0D340FFAB067536A712CA5E_label_en-US" xlink:label="lab_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeOnDerivativesLineItems_135D4C37B0D340FFAB067536A712CA5E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeOnDerivativesLineItems" xlink:label="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeOnDerivativesLineItems_135D4C37B0D340FFAB067536A712CA5E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeOnDerivativesLineItems_135D4C37B0D340FFAB067536A712CA5E" xlink:to="lab_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeOnDerivativesLineItems_135D4C37B0D340FFAB067536A712CA5E" xlink:type="arc" />
    <link:label id="lab_us-gaap_NonoperatingIncomeExpense_FCF73078E662DDBE814E7536A7123D4C_verboseLabel_en-US" xlink:label="lab_us-gaap_NonoperatingIncomeExpense_FCF73078E662DDBE814E7536A7123D4C" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Other income (expense), net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NonoperatingIncomeExpense" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_FCF73078E662DDBE814E7536A7123D4C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_FCF73078E662DDBE814E7536A7123D4C" xlink:to="lab_us-gaap_NonoperatingIncomeExpense_FCF73078E662DDBE814E7536A7123D4C" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProfitLoss_A1188FAB492BCD25D1C27536A7122435_verboseLabel_en-US" xlink:label="lab_us-gaap_ProfitLoss_A1188FAB492BCD25D1C27536A7122435" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Net (loss) income</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProfitLoss" xlink:label="loc_us-gaap_ProfitLoss_A1188FAB492BCD25D1C27536A7122435" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProfitLoss_A1188FAB492BCD25D1C27536A7122435" xlink:to="lab_us-gaap_ProfitLoss_A1188FAB492BCD25D1C27536A7122435" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_C7990EBB1D0D410A44C17536A4CEE74F_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_C7990EBB1D0D410A44C17536A4CEE74F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net cash (used for) provided by operating activities</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_C7990EBB1D0D410A44C17536A4CEE74F_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_C7990EBB1D0D410A44C17536A4CEE74F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Operating Activities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_C7990EBB1D0D410A44C17536A4CEE74F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_C7990EBB1D0D410A44C17536A4CEE74F" xlink:to="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_C7990EBB1D0D410A44C17536A4CEE74F" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_ADC442428969A896AA7D7536A4CE635B_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_ADC442428969A896AA7D7536A4CE635B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net cash provided by (used for) investing activities</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_ADC442428969A896AA7D7536A4CE635B_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_ADC442428969A896AA7D7536A4CE635B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Investing Activities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_ADC442428969A896AA7D7536A4CE635B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_ADC442428969A896AA7D7536A4CE635B" xlink:to="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_ADC442428969A896AA7D7536A4CE635B" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_D715492FE03D98E01BF77536A4CE206A_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_D715492FE03D98E01BF77536A4CE206A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net cash (used for) provided by financing activities</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_D715492FE03D98E01BF77536A4CE206A_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_D715492FE03D98E01BF77536A4CE206A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Financing Activities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_D715492FE03D98E01BF77536A4CE206A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_D715492FE03D98E01BF77536A4CE206A" xlink:to="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_D715492FE03D98E01BF77536A4CE206A" xlink:type="arc" />
    <link:label id="lab_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_9880265AD275D63E963C7536A4CEBA40_terseLabel_en-US" xlink:label="lab_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_9880265AD275D63E963C7536A4CEBA40" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Effect of changes in currency exchange rates</link:label>
    <link:label id="lab_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_9880265AD275D63E963C7536A4CEBA40_label_en-US" xlink:label="lab_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_9880265AD275D63E963C7536A4CEBA40" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:label="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_9880265AD275D63E963C7536A4CEBA40" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_9880265AD275D63E963C7536A4CEBA40" xlink:to="lab_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_9880265AD275D63E963C7536A4CEBA40" xlink:type="arc" />
    <link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_22A69327B3D3F746E3167536A4CEF808_totalLabel_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_22A69327B3D3F746E3167536A4CEF808" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">(Decrease) increase in cash</link:label>
    <link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_22A69327B3D3F746E3167536A4CEF808_label_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_22A69327B3D3F746E3167536A4CEF808" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_22A69327B3D3F746E3167536A4CEF808" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_22A69327B3D3F746E3167536A4CEF808" xlink:to="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_22A69327B3D3F746E3167536A4CEF808" xlink:type="arc" />
    <link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_C039CD2AB49F3B1DE1C47536A4CECA63_periodStartLabel_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_C039CD2AB49F3B1DE1C47536A4CECA63" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Cash, cash equivalents and restricted cash beginning of period</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_C039CD2AB49F3B1DE1C47536A4CECA63" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_C039CD2AB49F3B1DE1C47536A4CECA63" xlink:to="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_C039CD2AB49F3B1DE1C47536A4CECA63" xlink:type="arc" />
    <link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_FBCBE9494B922EA763BB7536A4CE1A2B_periodEndLabel_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_FBCBE9494B922EA763BB7536A4CE1A2B" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Cash and cash equivalents end of period</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_FBCBE9494B922EA763BB7536A4CE1A2B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_FBCBE9494B922EA763BB7536A4CE1A2B" xlink:to="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_FBCBE9494B922EA763BB7536A4CE1A2B" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_3CD1088290182BF086ECC56748ECE131_terseLabel_en-US" xlink:label="lab_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_3CD1088290182BF086ECC56748ECE131" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Commitments and Contingencies</link:label>
    <link:label id="lab_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_3CD1088290182BF086ECC56748ECE131_label_en-US" xlink:label="lab_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_3CD1088290182BF086ECC56748ECE131" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Commitments and Contingencies Disclosure [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureTextBlock" xlink:label="loc_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_3CD1088290182BF086ECC56748ECE131" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_3CD1088290182BF086ECC56748ECE131" xlink:to="lab_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_3CD1088290182BF086ECC56748ECE131" xlink:type="arc" />
    <link:label id="lab_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_B09B48E9562E17AA33788DA5A4622433_terseLabel_en-US" xlink:label="lab_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_B09B48E9562E17AA33788DA5A4622433" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">New Accounting Pronouncements or Change in Accounting Principle [Table]</link:label>
    <link:label id="lab_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_B09B48E9562E17AA33788DA5A4622433_label_en-US" xlink:label="lab_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_B09B48E9562E17AA33788DA5A4622433" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">New Accounting Pronouncements or Change in Accounting Principle [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_B09B48E9562E17AA33788DA5A4622433" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_B09B48E9562E17AA33788DA5A4622433" xlink:to="lab_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_B09B48E9562E17AA33788DA5A4622433" xlink:type="arc" />
    <link:label id="lab_us-gaap_TimingOfTransferOfGoodOrServiceAxis_DE97ED8822E6325191C38DA5A46264BE_terseLabel_en-US" xlink:label="lab_us-gaap_TimingOfTransferOfGoodOrServiceAxis_DE97ED8822E6325191C38DA5A46264BE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Timing of Transfer of Good or Service [Axis]</link:label>
    <link:label id="lab_us-gaap_TimingOfTransferOfGoodOrServiceAxis_DE97ED8822E6325191C38DA5A46264BE_label_en-US" xlink:label="lab_us-gaap_TimingOfTransferOfGoodOrServiceAxis_DE97ED8822E6325191C38DA5A46264BE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Timing of Transfer of Good or Service [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TimingOfTransferOfGoodOrServiceAxis" xlink:label="loc_us-gaap_TimingOfTransferOfGoodOrServiceAxis_DE97ED8822E6325191C38DA5A46264BE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_TimingOfTransferOfGoodOrServiceAxis_DE97ED8822E6325191C38DA5A46264BE" xlink:to="lab_us-gaap_TimingOfTransferOfGoodOrServiceAxis_DE97ED8822E6325191C38DA5A46264BE" xlink:type="arc" />
    <link:label id="lab_us-gaap_TimingOfTransferOfGoodOrServiceDomain_29EA548AC715E3C0CEDB8DA5A46295C3_terseLabel_en-US" xlink:label="lab_us-gaap_TimingOfTransferOfGoodOrServiceDomain_29EA548AC715E3C0CEDB8DA5A46295C3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Timing of Transfer of Good or Service [Domain]</link:label>
    <link:label id="lab_us-gaap_TimingOfTransferOfGoodOrServiceDomain_29EA548AC715E3C0CEDB8DA5A46295C3_label_en-US" xlink:label="lab_us-gaap_TimingOfTransferOfGoodOrServiceDomain_29EA548AC715E3C0CEDB8DA5A46295C3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Timing of Transfer of Good or Service [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TimingOfTransferOfGoodOrServiceDomain" xlink:label="loc_us-gaap_TimingOfTransferOfGoodOrServiceDomain_29EA548AC715E3C0CEDB8DA5A46295C3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_TimingOfTransferOfGoodOrServiceDomain_29EA548AC715E3C0CEDB8DA5A46295C3" xlink:to="lab_us-gaap_TimingOfTransferOfGoodOrServiceDomain_29EA548AC715E3C0CEDB8DA5A46295C3" xlink:type="arc" />
    <link:label id="lab_us-gaap_TransferredAtPointInTimeMember_53F81EBD35675FDAD64F8DA5A4625C8B_terseLabel_en-US" xlink:label="lab_us-gaap_TransferredAtPointInTimeMember_53F81EBD35675FDAD64F8DA5A4625C8B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Transferred at Point in Time</link:label>
    <link:label id="lab_us-gaap_TransferredAtPointInTimeMember_53F81EBD35675FDAD64F8DA5A4625C8B_label_en-US" xlink:label="lab_us-gaap_TransferredAtPointInTimeMember_53F81EBD35675FDAD64F8DA5A4625C8B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Transferred at Point in Time [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TransferredAtPointInTimeMember" xlink:label="loc_us-gaap_TransferredAtPointInTimeMember_53F81EBD35675FDAD64F8DA5A4625C8B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_TransferredAtPointInTimeMember_53F81EBD35675FDAD64F8DA5A4625C8B" xlink:to="lab_us-gaap_TransferredAtPointInTimeMember_53F81EBD35675FDAD64F8DA5A4625C8B" xlink:type="arc" />
    <link:label id="lab_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_16DF048AFD9A90A9A0FA8DA5A463C993_terseLabel_en-US" xlink:label="lab_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_16DF048AFD9A90A9A0FA8DA5A463C993" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">New Accounting Pronouncements or Change in Accounting Principle [Line Items]</link:label>
    <link:label id="lab_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_16DF048AFD9A90A9A0FA8DA5A463C993_label_en-US" xlink:label="lab_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_16DF048AFD9A90A9A0FA8DA5A463C993" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">New Accounting Pronouncements or Change in Accounting Principle [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_16DF048AFD9A90A9A0FA8DA5A463C993" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_16DF048AFD9A90A9A0FA8DA5A463C993" xlink:to="lab_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_16DF048AFD9A90A9A0FA8DA5A463C993" xlink:type="arc" />
    <link:label id="lab_wab_RevenuePercentofRevenueDerivedfromPerformanceObligationsTransferofControl_2BE62717F4AF147FCC468DA5A463A8C3_terseLabel_en-US" xlink:label="lab_wab_RevenuePercentofRevenueDerivedfromPerformanceObligationsTransferofControl_2BE62717F4AF147FCC468DA5A463A8C3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Revenue derived from performance obligations satisfied when control passes to customer (as a percent)</link:label>
    <link:label id="lab_wab_RevenuePercentofRevenueDerivedfromPerformanceObligationsTransferofControl_2BE62717F4AF147FCC468DA5A463A8C3_label_en-US" xlink:label="lab_wab_RevenuePercentofRevenueDerivedfromPerformanceObligationsTransferofControl_2BE62717F4AF147FCC468DA5A463A8C3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenue, Percent of Revenue Derived from Performance Obligations, Transfer of Control</link:label>
    <link:label id="lab_wab_RevenuePercentofRevenueDerivedfromPerformanceObligationsTransferofControl_2BE62717F4AF147FCC468DA5A463A8C3_documentation_en-US" xlink:label="lab_wab_RevenuePercentofRevenueDerivedfromPerformanceObligationsTransferofControl_2BE62717F4AF147FCC468DA5A463A8C3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Revenue, Percent of Revenue Derived from Performance Obligations, Transfer of Control</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_RevenuePercentofRevenueDerivedfromPerformanceObligationsTransferofControl" xlink:label="loc_wab_RevenuePercentofRevenueDerivedfromPerformanceObligationsTransferofControl_2BE62717F4AF147FCC468DA5A463A8C3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_RevenuePercentofRevenueDerivedfromPerformanceObligationsTransferofControl_2BE62717F4AF147FCC468DA5A463A8C3" xlink:to="lab_wab_RevenuePercentofRevenueDerivedfromPerformanceObligationsTransferofControl_2BE62717F4AF147FCC468DA5A463A8C3" xlink:type="arc" />
    <link:label id="lab_us-gaap_ContractWithCustomerAssetNetNoncurrent_408067C531DC0E5F43728DA5A4634120_terseLabel_en-US" xlink:label="lab_us-gaap_ContractWithCustomerAssetNetNoncurrent_408067C531DC0E5F43728DA5A4634120" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Noncurrent contract assets</link:label>
    <link:label id="lab_us-gaap_ContractWithCustomerAssetNetNoncurrent_408067C531DC0E5F43728DA5A4634120_label_en-US" xlink:label="lab_us-gaap_ContractWithCustomerAssetNetNoncurrent_408067C531DC0E5F43728DA5A4634120" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Contract with Customer, Asset, Net, Noncurrent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ContractWithCustomerAssetNetNoncurrent" xlink:label="loc_us-gaap_ContractWithCustomerAssetNetNoncurrent_408067C531DC0E5F43728DA5A4634120" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ContractWithCustomerAssetNetNoncurrent_408067C531DC0E5F43728DA5A4634120" xlink:to="lab_us-gaap_ContractWithCustomerAssetNetNoncurrent_408067C531DC0E5F43728DA5A4634120" xlink:type="arc" />
    <link:label id="lab_us-gaap_ContractWithCustomerLiabilityNoncurrent_6017A8CA4DD4B94181738DA5A4639D81_terseLabel_en-US" xlink:label="lab_us-gaap_ContractWithCustomerLiabilityNoncurrent_6017A8CA4DD4B94181738DA5A4639D81" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Noncurrent contract liabilities</link:label>
    <link:label id="lab_us-gaap_ContractWithCustomerLiabilityNoncurrent_6017A8CA4DD4B94181738DA5A4639D81_label_en-US" xlink:label="lab_us-gaap_ContractWithCustomerLiabilityNoncurrent_6017A8CA4DD4B94181738DA5A4639D81" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Contract with Customer, Liability, Noncurrent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ContractWithCustomerLiabilityNoncurrent" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityNoncurrent_6017A8CA4DD4B94181738DA5A4639D81" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ContractWithCustomerLiabilityNoncurrent_6017A8CA4DD4B94181738DA5A4639D81" xlink:to="lab_us-gaap_ContractWithCustomerLiabilityNoncurrent_6017A8CA4DD4B94181738DA5A4639D81" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProvisionForLossOnContracts_D155B99DDE31192DB15F8DA5A464EF59_terseLabel_en-US" xlink:label="lab_us-gaap_ProvisionForLossOnContracts_D155B99DDE31192DB15F8DA5A464EF59" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Provisions for loss contracts</link:label>
    <link:label id="lab_us-gaap_ProvisionForLossOnContracts_D155B99DDE31192DB15F8DA5A464EF59_label_en-US" xlink:label="lab_us-gaap_ProvisionForLossOnContracts_D155B99DDE31192DB15F8DA5A464EF59" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Provision for Loss on Contracts</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProvisionForLossOnContracts" xlink:label="loc_us-gaap_ProvisionForLossOnContracts_D155B99DDE31192DB15F8DA5A464EF59" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProvisionForLossOnContracts_D155B99DDE31192DB15F8DA5A464EF59" xlink:to="lab_us-gaap_ProvisionForLossOnContracts_D155B99DDE31192DB15F8DA5A464EF59" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_D14D1A913E93A4924CE78DA5A464C057_terseLabel_en-US" xlink:label="lab_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_D14D1A913E93A4924CE78DA5A464C057" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net income (loss) attributable to noncontrolling interest</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetIncomeLossAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_D14D1A913E93A4924CE78DA5A464C057" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_D14D1A913E93A4924CE78DA5A464C057" xlink:to="lab_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_D14D1A913E93A4924CE78DA5A464C057" xlink:type="arc" />
    <link:label id="lab_us-gaap_InterestIncomeExpenseNet_3E2AE48B863E986F3D988DA5A464E7BB_negatedLabel_en-US" xlink:label="lab_us-gaap_InterestIncomeExpenseNet_3E2AE48B863E986F3D988DA5A464E7BB" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Interest expense, net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InterestIncomeExpenseNet" xlink:label="loc_us-gaap_InterestIncomeExpenseNet_3E2AE48B863E986F3D988DA5A464E7BB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InterestIncomeExpenseNet_3E2AE48B863E986F3D988DA5A464E7BB" xlink:to="lab_us-gaap_InterestIncomeExpenseNet_3E2AE48B863E986F3D988DA5A464E7BB" xlink:type="arc" />
    <link:label id="lab_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_4E926EC88DFA48E2334D9345131FA9D2_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_4E926EC88DFA48E2334D9345131FA9D2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Hedging Relationship [Axis]</link:label>
    <link:label id="lab_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_4E926EC88DFA48E2334D9345131FA9D2_label_en-US" xlink:label="lab_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_4E926EC88DFA48E2334D9345131FA9D2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Hedging Relationship [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_4E926EC88DFA48E2334D9345131FA9D2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_4E926EC88DFA48E2334D9345131FA9D2" xlink:to="lab_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_4E926EC88DFA48E2334D9345131FA9D2" xlink:type="arc" />
    <link:label id="lab_us-gaap_HedgingRelationshipDomain_474EB595222D0E9FE7BF9345132048EC_terseLabel_en-US" xlink:label="lab_us-gaap_HedgingRelationshipDomain_474EB595222D0E9FE7BF9345132048EC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Hedging Relationship [Domain]</link:label>
    <link:label id="lab_us-gaap_HedgingRelationshipDomain_474EB595222D0E9FE7BF9345132048EC_label_en-US" xlink:label="lab_us-gaap_HedgingRelationshipDomain_474EB595222D0E9FE7BF9345132048EC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Hedging Relationship [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_HedgingRelationshipDomain" xlink:label="loc_us-gaap_HedgingRelationshipDomain_474EB595222D0E9FE7BF9345132048EC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_HedgingRelationshipDomain_474EB595222D0E9FE7BF9345132048EC" xlink:to="lab_us-gaap_HedgingRelationshipDomain_474EB595222D0E9FE7BF9345132048EC" xlink:type="arc" />
    <link:label id="lab_us-gaap_CashFlowHedgingMember_E6DFBA086B8C2F138250934513203AEB_terseLabel_en-US" xlink:label="lab_us-gaap_CashFlowHedgingMember_E6DFBA086B8C2F138250934513203AEB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash Flow Hedging</link:label>
    <link:label id="lab_us-gaap_CashFlowHedgingMember_E6DFBA086B8C2F138250934513203AEB_label_en-US" xlink:label="lab_us-gaap_CashFlowHedgingMember_E6DFBA086B8C2F138250934513203AEB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash Flow Hedging [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CashFlowHedgingMember" xlink:label="loc_us-gaap_CashFlowHedgingMember_E6DFBA086B8C2F138250934513203AEB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashFlowHedgingMember_E6DFBA086B8C2F138250934513203AEB" xlink:to="lab_us-gaap_CashFlowHedgingMember_E6DFBA086B8C2F138250934513203AEB" xlink:type="arc" />
    <link:label id="lab_us-gaap_ForeignExchangeContractMember_04417378B98527266F11934513214C9C_terseLabel_en-US" xlink:label="lab_us-gaap_ForeignExchangeContractMember_04417378B98527266F11934513214C9C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Foreign Currency Contracts</link:label>
    <link:label id="lab_us-gaap_ForeignExchangeContractMember_04417378B98527266F11934513214C9C_label_en-US" xlink:label="lab_us-gaap_ForeignExchangeContractMember_04417378B98527266F11934513214C9C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Foreign Exchange Contract [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ForeignExchangeContractMember" xlink:label="loc_us-gaap_ForeignExchangeContractMember_04417378B98527266F11934513214C9C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ForeignExchangeContractMember_04417378B98527266F11934513214C9C" xlink:to="lab_us-gaap_ForeignExchangeContractMember_04417378B98527266F11934513214C9C" xlink:type="arc" />
    <link:label id="lab_us-gaap_ForeignExchangeForwardMember_7A6EEA605BF1C169A848934513226EAB_terseLabel_en-US" xlink:label="lab_us-gaap_ForeignExchangeForwardMember_7A6EEA605BF1C169A848934513226EAB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Foreign Exchange Forward</link:label>
    <link:label id="lab_us-gaap_ForeignExchangeForwardMember_7A6EEA605BF1C169A848934513226EAB_label_en-US" xlink:label="lab_us-gaap_ForeignExchangeForwardMember_7A6EEA605BF1C169A848934513226EAB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Foreign Exchange Forward [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ForeignExchangeForwardMember" xlink:label="loc_us-gaap_ForeignExchangeForwardMember_7A6EEA605BF1C169A848934513226EAB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ForeignExchangeForwardMember_7A6EEA605BF1C169A848934513226EAB" xlink:to="lab_us-gaap_ForeignExchangeForwardMember_7A6EEA605BF1C169A848934513226EAB" xlink:type="arc" />
    <link:label id="lab_us-gaap_DerivativeTermOfContract_4C2C494CA759EDDBAB6593451322A978_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeTermOfContract_4C2C494CA759EDDBAB6593451322A978" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Derivative term (in years)</link:label>
    <link:label id="lab_us-gaap_DerivativeTermOfContract_4C2C494CA759EDDBAB6593451322A978_label_en-US" xlink:label="lab_us-gaap_DerivativeTermOfContract_4C2C494CA759EDDBAB6593451322A978" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative, Term of Contract</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeTermOfContract" xlink:label="loc_us-gaap_DerivativeTermOfContract_4C2C494CA759EDDBAB6593451322A978" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeTermOfContract_4C2C494CA759EDDBAB6593451322A978" xlink:to="lab_us-gaap_DerivativeTermOfContract_4C2C494CA759EDDBAB6593451322A978" xlink:type="arc" />
    <link:label id="lab_us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet_569B77F335F3913F8FB8934513232860_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet_569B77F335F3913F8FB8934513232860" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Derivative instruments amounts reclassified into income</link:label>
    <link:label id="lab_us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet_569B77F335F3913F8FB8934513232860_label_en-US" xlink:label="lab_us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet_569B77F335F3913F8FB8934513232860" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet_569B77F335F3913F8FB8934513232860" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet_569B77F335F3913F8FB8934513232860" xlink:to="lab_us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet_569B77F335F3913F8FB8934513232860" xlink:type="arc" />
    <link:label id="lab_us-gaap_UnrealizedGainLossOnDerivatives_8E5B1FAD9C1B7FD31AAF93451323FB42_terseLabel_en-US" xlink:label="lab_us-gaap_UnrealizedGainLossOnDerivatives_8E5B1FAD9C1B7FD31AAF93451323FB42" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unrealized gain (loss) on derivative contracts</link:label>
    <link:label id="lab_us-gaap_UnrealizedGainLossOnDerivatives_8E5B1FAD9C1B7FD31AAF93451323FB42_label_en-US" xlink:label="lab_us-gaap_UnrealizedGainLossOnDerivatives_8E5B1FAD9C1B7FD31AAF93451323FB42" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Unrealized Gain (Loss) on Derivatives</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UnrealizedGainLossOnDerivatives" xlink:label="loc_us-gaap_UnrealizedGainLossOnDerivatives_8E5B1FAD9C1B7FD31AAF93451323FB42" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_UnrealizedGainLossOnDerivatives_8E5B1FAD9C1B7FD31AAF93451323FB42" xlink:to="lab_us-gaap_UnrealizedGainLossOnDerivatives_8E5B1FAD9C1B7FD31AAF93451323FB42" xlink:type="arc" />
    <link:label id="lab_wab_AnnaxGmbHMember_EFC394C9CC82614ACB8494AD92DE186B_terseLabel_en-US" xlink:label="lab_wab_AnnaxGmbHMember_EFC394C9CC82614ACB8494AD92DE186B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Annax</link:label>
    <link:label id="lab_wab_AnnaxGmbHMember_EFC394C9CC82614ACB8494AD92DE186B_label_en-US" xlink:label="lab_wab_AnnaxGmbHMember_EFC394C9CC82614ACB8494AD92DE186B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Annax GmbH [Member]</link:label>
    <link:label id="lab_wab_AnnaxGmbHMember_EFC394C9CC82614ACB8494AD92DE186B_documentation_en-US" xlink:label="lab_wab_AnnaxGmbHMember_EFC394C9CC82614ACB8494AD92DE186B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Annax GmbH [Member]</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_AnnaxGmbHMember" xlink:label="loc_wab_AnnaxGmbHMember_EFC394C9CC82614ACB8494AD92DE186B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_AnnaxGmbHMember_EFC394C9CC82614ACB8494AD92DE186B" xlink:to="lab_wab_AnnaxGmbHMember_EFC394C9CC82614ACB8494AD92DE186B" xlink:type="arc" />
    <link:label id="lab_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_F46B44816328E289094494AD92E04DF2_terseLabel_en-US" xlink:label="lab_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_F46B44816328E289094494AD92E04DF2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Indefinite Lived Intangible Assets By Major Class</link:label>
    <link:label id="lab_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_F46B44816328E289094494AD92E04DF2_label_en-US" xlink:label="lab_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_F46B44816328E289094494AD92E04DF2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Indefinite-lived Intangible Assets [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_F46B44816328E289094494AD92E04DF2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_F46B44816328E289094494AD92E04DF2" xlink:to="lab_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_F46B44816328E289094494AD92E04DF2" xlink:type="arc" />
    <link:label id="lab_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_0D845B2F98D89EE228B294AD92E0FA52_terseLabel_en-US" xlink:label="lab_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_0D845B2F98D89EE228B294AD92E0FA52" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Indefinite Lived Intangible Assets Major Class Name</link:label>
    <link:label id="lab_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_0D845B2F98D89EE228B294AD92E0FA52_label_en-US" xlink:label="lab_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_0D845B2F98D89EE228B294AD92E0FA52" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Indefinite-lived Intangible Assets, Major Class Name [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_0D845B2F98D89EE228B294AD92E0FA52" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_0D845B2F98D89EE228B294AD92E0FA52" xlink:to="lab_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_0D845B2F98D89EE228B294AD92E0FA52" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_611D1CCEB1C0CCC2380894AD92E16034_verboseLabel_en-US" xlink:label="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_611D1CCEB1C0CCC2380894AD92E16034" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Purchase price, net of cash acquired</link:label>
    <link:label id="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_611D1CCEB1C0CCC2380894AD92E16034_label_en-US" xlink:label="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_611D1CCEB1C0CCC2380894AD92E16034" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_611D1CCEB1C0CCC2380894AD92E16034" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_611D1CCEB1C0CCC2380894AD92E16034" xlink:to="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_611D1CCEB1C0CCC2380894AD92E16034" xlink:type="arc" />
    <link:label id="lab_us-gaap_EscrowDeposit_D240650BF8FE144ABD7F94AD92E218D5_verboseLabel_en-US" xlink:label="lab_us-gaap_EscrowDeposit_D240650BF8FE144ABD7F94AD92E218D5" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Escrow deposits</link:label>
    <link:label id="lab_us-gaap_EscrowDeposit_D240650BF8FE144ABD7F94AD92E218D5_label_en-US" xlink:label="lab_us-gaap_EscrowDeposit_D240650BF8FE144ABD7F94AD92E218D5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Escrow Deposit</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EscrowDeposit" xlink:label="loc_us-gaap_EscrowDeposit_D240650BF8FE144ABD7F94AD92E218D5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EscrowDeposit_D240650BF8FE144ABD7F94AD92E218D5" xlink:to="lab_us-gaap_EscrowDeposit_D240650BF8FE144ABD7F94AD92E218D5" xlink:type="arc" />
    <link:label id="lab_wab_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherIntangibleAssetsAndGoodwill_932D6893082AEB193D7E94AD92E212FE_terseLabel_en-US" xlink:label="lab_wab_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherIntangibleAssetsAndGoodwill_932D6893082AEB193D7E94AD92E212FE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Goodwill and other intangible assets acquired</link:label>
    <link:label id="lab_wab_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherIntangibleAssetsAndGoodwill_932D6893082AEB193D7E94AD92E212FE_label_en-US" xlink:label="lab_wab_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherIntangibleAssetsAndGoodwill_932D6893082AEB193D7E94AD92E212FE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Other Intangible Assets And Goodwill</link:label>
    <link:label id="lab_wab_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherIntangibleAssetsAndGoodwill_932D6893082AEB193D7E94AD92E212FE_documentation_en-US" xlink:label="lab_wab_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherIntangibleAssetsAndGoodwill_932D6893082AEB193D7E94AD92E212FE" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Other Intangible Assets And Goodwill</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherIntangibleAssetsAndGoodwill" xlink:label="loc_wab_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherIntangibleAssetsAndGoodwill_932D6893082AEB193D7E94AD92E212FE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherIntangibleAssetsAndGoodwill_932D6893082AEB193D7E94AD92E212FE" xlink:to="lab_wab_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherIntangibleAssetsAndGoodwill_932D6893082AEB193D7E94AD92E212FE" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill_4C4444E84AA73E2C48E794AD92E2EDCD_verboseLabel_en-US" xlink:label="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill_4C4444E84AA73E2C48E794AD92E2EDCD" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Acquired indefinite-lived intangible assets</link:label>
    <link:label id="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill_4C4444E84AA73E2C48E794AD92E2EDCD_label_en-US" xlink:label="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill_4C4444E84AA73E2C48E794AD92E2EDCD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill_4C4444E84AA73E2C48E794AD92E2EDCD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill_4C4444E84AA73E2C48E794AD92E2EDCD" xlink:to="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill_4C4444E84AA73E2C48E794AD92E2EDCD" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetUsefulLife_7FD6B92D717F122D382694AD92E22426_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetUsefulLife_7FD6B92D717F122D382694AD92E22426" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Intangible assets, weighted average useful life (years)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetUsefulLife" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife_7FD6B92D717F122D382694AD92E22426" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife_7FD6B92D717F122D382694AD92E22426" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetUsefulLife_7FD6B92D717F122D382694AD92E22426" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables_0A3F88CE247E68239E4194AD92E39C79_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables_0A3F88CE247E68239E4194AD92E39C79" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accounts receivable</link:label>
    <link:label id="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables_0A3F88CE247E68239E4194AD92E39C79_label_en-US" xlink:label="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables_0A3F88CE247E68239E4194AD92E39C79" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables_0A3F88CE247E68239E4194AD92E39C79" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables_0A3F88CE247E68239E4194AD92E39C79" xlink:to="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables_0A3F88CE247E68239E4194AD92E39C79" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities_B044DA0960A0703335D994AD92E39A63_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities_B044DA0960A0703335D994AD92E39A63" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Current liabilities</link:label>
    <link:label id="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities_B044DA0960A0703335D994AD92E39A63_label_en-US" xlink:label="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities_B044DA0960A0703335D994AD92E39A63" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities_B044DA0960A0703335D994AD92E39A63" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities_B044DA0960A0703335D994AD92E39A63" xlink:to="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities_B044DA0960A0703335D994AD92E39A63" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfOtherNonoperatingIncomeExpenseTableTextBlock_797FC43C02C74DEE803F51F923242B17_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfOtherNonoperatingIncomeExpenseTableTextBlock_797FC43C02C74DEE803F51F923242B17" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Components of Other Income (Expense)</link:label>
    <link:label id="lab_us-gaap_ScheduleOfOtherNonoperatingIncomeExpenseTableTextBlock_797FC43C02C74DEE803F51F923242B17_label_en-US" xlink:label="lab_us-gaap_ScheduleOfOtherNonoperatingIncomeExpenseTableTextBlock_797FC43C02C74DEE803F51F923242B17" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Other Nonoperating Income (Expense) [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfOtherNonoperatingIncomeExpenseTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfOtherNonoperatingIncomeExpenseTableTextBlock_797FC43C02C74DEE803F51F923242B17" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfOtherNonoperatingIncomeExpenseTableTextBlock_797FC43C02C74DEE803F51F923242B17" xlink:to="lab_us-gaap_ScheduleOfOtherNonoperatingIncomeExpenseTableTextBlock_797FC43C02C74DEE803F51F923242B17" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_52A8468CEFF8856FFF108E532B32ADF6_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_52A8468CEFF8856FFF108E532B32ADF6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Operating Leases</link:label>
    <link:label id="lab_us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_52A8468CEFF8856FFF108E532B32ADF6_label_en-US" xlink:label="lab_us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_52A8468CEFF8856FFF108E532B32ADF6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Lease Liabilities, Payments Due [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract" xlink:label="loc_us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_52A8468CEFF8856FFF108E532B32ADF6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_52A8468CEFF8856FFF108E532B32ADF6" xlink:to="lab_us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_52A8468CEFF8856FFF108E532B32ADF6" xlink:type="arc" />
    <link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_7812A6C955136F30EB038E532B330245_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_7812A6C955136F30EB038E532B330245" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Remaining 2019</link:label>
    <link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_7812A6C955136F30EB038E532B330245_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_7812A6C955136F30EB038E532B330245" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_7812A6C955136F30EB038E532B330245" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_7812A6C955136F30EB038E532B330245" xlink:to="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_7812A6C955136F30EB038E532B330245" xlink:type="arc" />
    <link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_57C84E8F399217134D588E532B33461C_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_57C84E8F399217134D588E532B33461C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2020</link:label>
    <link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_57C84E8F399217134D588E532B33461C_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_57C84E8F399217134D588E532B33461C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee, Operating Lease, Liability, Payments, Due Year Two</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_57C84E8F399217134D588E532B33461C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_57C84E8F399217134D588E532B33461C" xlink:to="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_57C84E8F399217134D588E532B33461C" xlink:type="arc" />
    <link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_200D8043B93EAD858DB38E532B33EC6A_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_200D8043B93EAD858DB38E532B33EC6A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2021</link:label>
    <link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_200D8043B93EAD858DB38E532B33EC6A_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_200D8043B93EAD858DB38E532B33EC6A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee, Operating Lease, Liability, Payments, Due Year Three</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_200D8043B93EAD858DB38E532B33EC6A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_200D8043B93EAD858DB38E532B33EC6A" xlink:to="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_200D8043B93EAD858DB38E532B33EC6A" xlink:type="arc" />
    <link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_D942DC9FCF29B4E367D08E532B336C49_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_D942DC9FCF29B4E367D08E532B336C49" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2022</link:label>
    <link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_D942DC9FCF29B4E367D08E532B336C49_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_D942DC9FCF29B4E367D08E532B336C49" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee, Operating Lease, Liability, Payments, Due Year Four</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_D942DC9FCF29B4E367D08E532B336C49" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_D942DC9FCF29B4E367D08E532B336C49" xlink:to="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_D942DC9FCF29B4E367D08E532B336C49" xlink:type="arc" />
    <link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_9B883EA96C83F4A493CB8E532B334CC6_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_9B883EA96C83F4A493CB8E532B334CC6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2023</link:label>
    <link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_9B883EA96C83F4A493CB8E532B334CC6_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_9B883EA96C83F4A493CB8E532B334CC6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee, Operating Lease, Liability, Payments, Due Year Five</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_9B883EA96C83F4A493CB8E532B334CC6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_9B883EA96C83F4A493CB8E532B334CC6" xlink:to="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_9B883EA96C83F4A493CB8E532B334CC6" xlink:type="arc" />
    <link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_0423B2BFB9A944BA3FA08E532B3499DB_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_0423B2BFB9A944BA3FA08E532B3499DB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Thereafter</link:label>
    <link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_0423B2BFB9A944BA3FA08E532B3499DB_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_0423B2BFB9A944BA3FA08E532B3499DB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee, Operating Lease, Liability, Payments, Due after Year Five</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_0423B2BFB9A944BA3FA08E532B3499DB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_0423B2BFB9A944BA3FA08E532B3499DB" xlink:to="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_0423B2BFB9A944BA3FA08E532B3499DB" xlink:type="arc" />
    <link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_E57905ED4BBB806115638E532B342ABA_totalLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_E57905ED4BBB806115638E532B342ABA" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total Lease Payments</link:label>
    <link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_E57905ED4BBB806115638E532B342ABA_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_E57905ED4BBB806115638E532B342ABA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee, Operating Lease, Liability, Payments, Due</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_E57905ED4BBB806115638E532B342ABA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_E57905ED4BBB806115638E532B342ABA" xlink:to="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_E57905ED4BBB806115638E532B342ABA" xlink:type="arc" />
    <link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_9A8A5DBAF7079A4FBFD28E532B34DDA6_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_9A8A5DBAF7079A4FBFD28E532B34DDA6" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Less: Present Value Discount</link:label>
    <link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_9A8A5DBAF7079A4FBFD28E532B34DDA6_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_9A8A5DBAF7079A4FBFD28E532B34DDA6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee, Operating Lease, Liability, Undiscounted Excess Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_9A8A5DBAF7079A4FBFD28E532B34DDA6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_9A8A5DBAF7079A4FBFD28E532B34DDA6" xlink:to="lab_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_9A8A5DBAF7079A4FBFD28E532B34DDA6" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingLeaseLiability_BA43C825BE451E4E69218E532B34577D_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeaseLiability_BA43C825BE451E4E69218E532B34577D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Present Value Lease Liabilities</link:label>
    <link:label id="lab_us-gaap_OperatingLeaseLiability_BA43C825BE451E4E69218E532B34577D_label_en-US" xlink:label="lab_us-gaap_OperatingLeaseLiability_BA43C825BE451E4E69218E532B34577D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Lease, Liability</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeaseLiability" xlink:label="loc_us-gaap_OperatingLeaseLiability_BA43C825BE451E4E69218E532B34577D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeaseLiability_BA43C825BE451E4E69218E532B34577D" xlink:to="lab_us-gaap_OperatingLeaseLiability_BA43C825BE451E4E69218E532B34577D" xlink:type="arc" />
    <link:label id="lab_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_15DAA2CADC6C2B1E05C88E532B3467CB_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_15DAA2CADC6C2B1E05C88E532B3467CB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Finance Leases</link:label>
    <link:label id="lab_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_15DAA2CADC6C2B1E05C88E532B3467CB_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_15DAA2CADC6C2B1E05C88E532B3467CB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finance Lease Liabilities, Payments, Due [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract" xlink:label="loc_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_15DAA2CADC6C2B1E05C88E532B3467CB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_15DAA2CADC6C2B1E05C88E532B3467CB" xlink:to="lab_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_15DAA2CADC6C2B1E05C88E532B3467CB" xlink:type="arc" />
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear_828CC6CE872BFBF9A7498E532B344EA9_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear_828CC6CE872BFBF9A7498E532B344EA9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Remaining 2019</link:label>
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear_828CC6CE872BFBF9A7498E532B344EA9_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear_828CC6CE872BFBF9A7498E532B344EA9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finance Lease, Liability, Payments, Remainder of Fiscal Year</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear_828CC6CE872BFBF9A7498E532B344EA9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear_828CC6CE872BFBF9A7498E532B344EA9" xlink:to="lab_us-gaap_FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear_828CC6CE872BFBF9A7498E532B344EA9" xlink:type="arc" />
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_72A21908DC74680C8CDD8E532B355CF3_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_72A21908DC74680C8CDD8E532B355CF3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2020</link:label>
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_72A21908DC74680C8CDD8E532B355CF3_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_72A21908DC74680C8CDD8E532B355CF3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finance Lease, Liability, Payments, Due Year Two</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_72A21908DC74680C8CDD8E532B355CF3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_72A21908DC74680C8CDD8E532B355CF3" xlink:to="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_72A21908DC74680C8CDD8E532B355CF3" xlink:type="arc" />
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree_357C36915033DB253D468E532B35F809_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree_357C36915033DB253D468E532B35F809" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2021</link:label>
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree_357C36915033DB253D468E532B35F809_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree_357C36915033DB253D468E532B35F809" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finance Lease, Liability, Payments, Due Year Three</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree_357C36915033DB253D468E532B35F809" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree_357C36915033DB253D468E532B35F809" xlink:to="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree_357C36915033DB253D468E532B35F809" xlink:type="arc" />
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour_7A29C0E42E5C857A42B68E532B356A88_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour_7A29C0E42E5C857A42B68E532B356A88" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2022</link:label>
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour_7A29C0E42E5C857A42B68E532B356A88_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour_7A29C0E42E5C857A42B68E532B356A88" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finance Lease, Liability, Payments, Due Year Four</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour_7A29C0E42E5C857A42B68E532B356A88" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour_7A29C0E42E5C857A42B68E532B356A88" xlink:to="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour_7A29C0E42E5C857A42B68E532B356A88" xlink:type="arc" />
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive_9CC955338CCBEDAF17D48E532B3553EC_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive_9CC955338CCBEDAF17D48E532B3553EC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2023</link:label>
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive_9CC955338CCBEDAF17D48E532B3553EC_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive_9CC955338CCBEDAF17D48E532B3553EC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finance Lease, Liability, Payments, Due Year Five</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive_9CC955338CCBEDAF17D48E532B3553EC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive_9CC955338CCBEDAF17D48E532B3553EC" xlink:to="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive_9CC955338CCBEDAF17D48E532B3553EC" xlink:type="arc" />
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive_9D3286BEDF29A64789F38E532B35FDAD_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive_9D3286BEDF29A64789F38E532B35FDAD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Thereafter</link:label>
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive_9D3286BEDF29A64789F38E532B35FDAD_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive_9D3286BEDF29A64789F38E532B35FDAD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finance Lease, Liability, Payments, Due after Year Five</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive_9D3286BEDF29A64789F38E532B35FDAD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive_9D3286BEDF29A64789F38E532B35FDAD" xlink:to="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive_9D3286BEDF29A64789F38E532B35FDAD" xlink:type="arc" />
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsDue_E811A46100DAC0FFAF7F8E532B354C39_totalLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsDue_E811A46100DAC0FFAF7F8E532B354C39" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total Lease Payments</link:label>
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsDue_E811A46100DAC0FFAF7F8E532B354C39_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsDue_E811A46100DAC0FFAF7F8E532B354C39" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finance Lease, Liability, Payments, Due</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDue" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDue_E811A46100DAC0FFAF7F8E532B354C39" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLeaseLiabilityPaymentsDue_E811A46100DAC0FFAF7F8E532B354C39" xlink:to="lab_us-gaap_FinanceLeaseLiabilityPaymentsDue_E811A46100DAC0FFAF7F8E532B354C39" xlink:type="arc" />
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount_AD66FC7DBDAC952443A88E532B3636E2_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount_AD66FC7DBDAC952443A88E532B3636E2" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Less: Present Value Discount</link:label>
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount_AD66FC7DBDAC952443A88E532B3636E2_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount_AD66FC7DBDAC952443A88E532B3636E2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finance Lease, Liability, Undiscounted Excess Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount" xlink:label="loc_us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount_AD66FC7DBDAC952443A88E532B3636E2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount_AD66FC7DBDAC952443A88E532B3636E2" xlink:to="lab_us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount_AD66FC7DBDAC952443A88E532B3636E2" xlink:type="arc" />
    <link:label id="lab_us-gaap_FinanceLeaseLiability_40609BA03E0D266532D78E532B36249C_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiability_40609BA03E0D266532D78E532B36249C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Present Value Lease Liabilities</link:label>
    <link:label id="lab_us-gaap_FinanceLeaseLiability_40609BA03E0D266532D78E532B36249C_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiability_40609BA03E0D266532D78E532B36249C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finance Lease, Liability</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinanceLeaseLiability" xlink:label="loc_us-gaap_FinanceLeaseLiability_40609BA03E0D266532D78E532B36249C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLeaseLiability_40609BA03E0D266532D78E532B36249C" xlink:to="lab_us-gaap_FinanceLeaseLiability_40609BA03E0D266532D78E532B36249C" xlink:type="arc" />
    <link:label id="lab_wab_TotalPaymentsDueAbstract_801EB2726CB25A0BB8D88E532B36739E_terseLabel_en-US" xlink:label="lab_wab_TotalPaymentsDueAbstract_801EB2726CB25A0BB8D88E532B36739E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total</link:label>
    <link:label id="lab_wab_TotalPaymentsDueAbstract_801EB2726CB25A0BB8D88E532B36739E_label_en-US" xlink:label="lab_wab_TotalPaymentsDueAbstract_801EB2726CB25A0BB8D88E532B36739E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Total Payments Due [Abstract]</link:label>
    <link:label id="lab_wab_TotalPaymentsDueAbstract_801EB2726CB25A0BB8D88E532B36739E_documentation_en-US" xlink:label="lab_wab_TotalPaymentsDueAbstract_801EB2726CB25A0BB8D88E532B36739E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Total Payments Due [Abstract]</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_TotalPaymentsDueAbstract" xlink:label="loc_wab_TotalPaymentsDueAbstract_801EB2726CB25A0BB8D88E532B36739E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_TotalPaymentsDueAbstract_801EB2726CB25A0BB8D88E532B36739E" xlink:to="lab_wab_TotalPaymentsDueAbstract_801EB2726CB25A0BB8D88E532B36739E" xlink:type="arc" />
    <link:label id="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsRemainderofFiscalYear_A43E28785B081FCE8A0B8E532B3633F5_totalLabel_en-US" xlink:label="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsRemainderofFiscalYear_A43E28785B081FCE8A0B8E532B3633F5" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Remaining 2019</link:label>
    <link:label id="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsRemainderofFiscalYear_A43E28785B081FCE8A0B8E532B3633F5_label_en-US" xlink:label="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsRemainderofFiscalYear_A43E28785B081FCE8A0B8E532B3633F5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee, Operating And Finance Lease, Liability, Total, Payments, Remainder of Fiscal Year</link:label>
    <link:label id="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsRemainderofFiscalYear_A43E28785B081FCE8A0B8E532B3633F5_documentation_en-US" xlink:label="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsRemainderofFiscalYear_A43E28785B081FCE8A0B8E532B3633F5" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Lessee, Operating And Finance Lease, Liability, Total, Payments, Remainder of Fiscal Year</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsRemainderofFiscalYear" xlink:label="loc_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsRemainderofFiscalYear_A43E28785B081FCE8A0B8E532B3633F5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsRemainderofFiscalYear_A43E28785B081FCE8A0B8E532B3633F5" xlink:to="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsRemainderofFiscalYear_A43E28785B081FCE8A0B8E532B3633F5" xlink:type="arc" />
    <link:label id="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearTwo_53003C43828014B2DB2E8E532B368462_totalLabel_en-US" xlink:label="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearTwo_53003C43828014B2DB2E8E532B368462" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">2020</link:label>
    <link:label id="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearTwo_53003C43828014B2DB2E8E532B368462_label_en-US" xlink:label="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearTwo_53003C43828014B2DB2E8E532B368462" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee, Operating And Finance Lease, Liability, Total Payments, Due Year Two</link:label>
    <link:label id="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearTwo_53003C43828014B2DB2E8E532B368462_documentation_en-US" xlink:label="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearTwo_53003C43828014B2DB2E8E532B368462" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Lessee, Operating And Finance Lease, Liability, Total Payments, Due Year Two</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearTwo" xlink:label="loc_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearTwo_53003C43828014B2DB2E8E532B368462" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearTwo_53003C43828014B2DB2E8E532B368462" xlink:to="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearTwo_53003C43828014B2DB2E8E532B368462" xlink:type="arc" />
    <link:label id="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearThree_B96E6DC1D19EB7689A608E532B372005_totalLabel_en-US" xlink:label="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearThree_B96E6DC1D19EB7689A608E532B372005" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">2021</link:label>
    <link:label id="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearThree_B96E6DC1D19EB7689A608E532B372005_label_en-US" xlink:label="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearThree_B96E6DC1D19EB7689A608E532B372005" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee, Operating And Finance, Lease, Liability, Total, Payments, Due Year Three</link:label>
    <link:label id="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearThree_B96E6DC1D19EB7689A608E532B372005_documentation_en-US" xlink:label="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearThree_B96E6DC1D19EB7689A608E532B372005" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Lessee, Operating And Finance, Lease, Liability, Total, Payments, Due Year Three</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearThree" xlink:label="loc_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearThree_B96E6DC1D19EB7689A608E532B372005" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearThree_B96E6DC1D19EB7689A608E532B372005" xlink:to="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearThree_B96E6DC1D19EB7689A608E532B372005" xlink:type="arc" />
    <link:label id="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearFour_564EC5E0065C74DE43698E532B376A4B_totalLabel_en-US" xlink:label="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearFour_564EC5E0065C74DE43698E532B376A4B" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">2022</link:label>
    <link:label id="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearFour_564EC5E0065C74DE43698E532B376A4B_label_en-US" xlink:label="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearFour_564EC5E0065C74DE43698E532B376A4B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee, Operating And Finance Lease, Liability, Total Payments, Due Year Four</link:label>
    <link:label id="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearFour_564EC5E0065C74DE43698E532B376A4B_documentation_en-US" xlink:label="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearFour_564EC5E0065C74DE43698E532B376A4B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Lessee, Operating And Finance Lease, Liability, Total Payments, Due Year Four</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearFour" xlink:label="loc_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearFour_564EC5E0065C74DE43698E532B376A4B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearFour_564EC5E0065C74DE43698E532B376A4B" xlink:to="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearFour_564EC5E0065C74DE43698E532B376A4B" xlink:type="arc" />
    <link:label id="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearFive_EC964C0D70FC8AAAF8018E532B375501_totalLabel_en-US" xlink:label="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearFive_EC964C0D70FC8AAAF8018E532B375501" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">2023</link:label>
    <link:label id="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearFive_EC964C0D70FC8AAAF8018E532B375501_label_en-US" xlink:label="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearFive_EC964C0D70FC8AAAF8018E532B375501" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee, Operating And Finance Lease, Liability, Total Payments, Due Year Five</link:label>
    <link:label id="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearFive_EC964C0D70FC8AAAF8018E532B375501_documentation_en-US" xlink:label="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearFive_EC964C0D70FC8AAAF8018E532B375501" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Lessee, Operating And Finance Lease, Liability, Total Payments, Due Year Five</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearFive" xlink:label="loc_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearFive_EC964C0D70FC8AAAF8018E532B375501" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearFive_EC964C0D70FC8AAAF8018E532B375501" xlink:to="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearFive_EC964C0D70FC8AAAF8018E532B375501" xlink:type="arc" />
    <link:label id="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueAfterYearFive_CEAF5E30D619543A552E8E532B37CD65_totalLabel_en-US" xlink:label="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueAfterYearFive_CEAF5E30D619543A552E8E532B37CD65" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Thereafter</link:label>
    <link:label id="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueAfterYearFive_CEAF5E30D619543A552E8E532B37CD65_label_en-US" xlink:label="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueAfterYearFive_CEAF5E30D619543A552E8E532B37CD65" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee, Operating And Finance Lease, Liability, Total Payments, Due After Year Five</link:label>
    <link:label id="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueAfterYearFive_CEAF5E30D619543A552E8E532B37CD65_documentation_en-US" xlink:label="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueAfterYearFive_CEAF5E30D619543A552E8E532B37CD65" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Lessee, Operating And Finance Lease, Liability, Total Payments, Due After Year Five</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueAfterYearFive" xlink:label="loc_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueAfterYearFive_CEAF5E30D619543A552E8E532B37CD65" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueAfterYearFive_CEAF5E30D619543A552E8E532B37CD65" xlink:to="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueAfterYearFive_CEAF5E30D619543A552E8E532B37CD65" xlink:type="arc" />
    <link:label id="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityPaymentsDue_C18D71EB1742FD3E9EAC8E532B37054C_totalLabel_en-US" xlink:label="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityPaymentsDue_C18D71EB1742FD3E9EAC8E532B37054C" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total Lease Payments</link:label>
    <link:label id="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityPaymentsDue_C18D71EB1742FD3E9EAC8E532B37054C_label_en-US" xlink:label="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityPaymentsDue_C18D71EB1742FD3E9EAC8E532B37054C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee, Operating And Finance Lease, Liability, Payments Due</link:label>
    <link:label id="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityPaymentsDue_C18D71EB1742FD3E9EAC8E532B37054C_documentation_en-US" xlink:label="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityPaymentsDue_C18D71EB1742FD3E9EAC8E532B37054C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Lessee, Operating And Finance Lease, Liability, Payments Due</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_LesseeOperatingAndFinanceLeaseLiabilityPaymentsDue" xlink:label="loc_wab_LesseeOperatingAndFinanceLeaseLiabilityPaymentsDue_C18D71EB1742FD3E9EAC8E532B37054C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_LesseeOperatingAndFinanceLeaseLiabilityPaymentsDue_C18D71EB1742FD3E9EAC8E532B37054C" xlink:to="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityPaymentsDue_C18D71EB1742FD3E9EAC8E532B37054C" xlink:type="arc" />
    <link:label id="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityUndiscountedExcessAmount_8ACB457088900656BED88E532B37F2B3_totalLabel_en-US" xlink:label="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityUndiscountedExcessAmount_8ACB457088900656BED88E532B37F2B3" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Less: Present Value Discount</link:label>
    <link:label id="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityUndiscountedExcessAmount_8ACB457088900656BED88E532B37F2B3_label_en-US" xlink:label="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityUndiscountedExcessAmount_8ACB457088900656BED88E532B37F2B3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee, Operating And Finance Lease, Liability, Undiscounted Excess Amount</link:label>
    <link:label id="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityUndiscountedExcessAmount_8ACB457088900656BED88E532B37F2B3_documentation_en-US" xlink:label="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityUndiscountedExcessAmount_8ACB457088900656BED88E532B37F2B3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Lessee, Operating And Finance Lease, Liability, Undiscounted Excess Amount</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_LesseeOperatingAndFinanceLeaseLiabilityUndiscountedExcessAmount" xlink:label="loc_wab_LesseeOperatingAndFinanceLeaseLiabilityUndiscountedExcessAmount_8ACB457088900656BED88E532B37F2B3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_LesseeOperatingAndFinanceLeaseLiabilityUndiscountedExcessAmount_8ACB457088900656BED88E532B37F2B3" xlink:to="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityUndiscountedExcessAmount_8ACB457088900656BED88E532B37F2B3" xlink:type="arc" />
    <link:label id="lab_wab_OperatingAndFinanceLeaseLiability_57838BA4F1BC7A74ADF08E532B385E7D_totalLabel_en-US" xlink:label="lab_wab_OperatingAndFinanceLeaseLiability_57838BA4F1BC7A74ADF08E532B385E7D" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Present Value Lease Liabilities</link:label>
    <link:label id="lab_wab_OperatingAndFinanceLeaseLiability_57838BA4F1BC7A74ADF08E532B385E7D_label_en-US" xlink:label="lab_wab_OperatingAndFinanceLeaseLiability_57838BA4F1BC7A74ADF08E532B385E7D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating And Finance Lease, Liability</link:label>
    <link:label id="lab_wab_OperatingAndFinanceLeaseLiability_57838BA4F1BC7A74ADF08E532B385E7D_documentation_en-US" xlink:label="lab_wab_OperatingAndFinanceLeaseLiability_57838BA4F1BC7A74ADF08E532B385E7D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Operating And Finance Lease, Liability</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_OperatingAndFinanceLeaseLiability" xlink:label="loc_wab_OperatingAndFinanceLeaseLiability_57838BA4F1BC7A74ADF08E532B385E7D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_OperatingAndFinanceLeaseLiability_57838BA4F1BC7A74ADF08E532B385E7D" xlink:to="lab_wab_OperatingAndFinanceLeaseLiability_57838BA4F1BC7A74ADF08E532B385E7D" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock_5776CAD187AFCC915165C567491B7D35_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock_5776CAD187AFCC915165C567491B7D35" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of Preliminary Estimated Fair Values of the Assets Acquired and Liabilities Assumed at the Date of the Acquisition</link:label>
    <link:label id="lab_us-gaap_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock_5776CAD187AFCC915165C567491B7D35_label_en-US" xlink:label="lab_us-gaap_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock_5776CAD187AFCC915165C567491B7D35" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock_5776CAD187AFCC915165C567491B7D35" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock_5776CAD187AFCC915165C567491B7D35" xlink:to="lab_us-gaap_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock_5776CAD187AFCC915165C567491B7D35" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessAcquisitionProFormaInformationTextBlock_6026B1650EEA9D607AEAC567491BAA43_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionProFormaInformationTextBlock_6026B1650EEA9D607AEAC567491BAA43" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Pro Forma Financial Information</link:label>
    <link:label id="lab_us-gaap_BusinessAcquisitionProFormaInformationTextBlock_6026B1650EEA9D607AEAC567491BAA43_label_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionProFormaInformationTextBlock_6026B1650EEA9D607AEAC567491BAA43" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Acquisition, Pro Forma Information [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionProFormaInformationTextBlock" xlink:label="loc_us-gaap_BusinessAcquisitionProFormaInformationTextBlock_6026B1650EEA9D607AEAC567491BAA43" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessAcquisitionProFormaInformationTextBlock_6026B1650EEA9D607AEAC567491BAA43" xlink:to="lab_us-gaap_BusinessAcquisitionProFormaInformationTextBlock_6026B1650EEA9D607AEAC567491BAA43" xlink:type="arc" />
    <link:label id="lab_us-gaap_OrderOrProductionBacklogMember_A59619416FA2E3E3772C94AD92EF7F04_terseLabel_en-US" xlink:label="lab_us-gaap_OrderOrProductionBacklogMember_A59619416FA2E3E3772C94AD92EF7F04" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Backlog</link:label>
    <link:label id="lab_us-gaap_OrderOrProductionBacklogMember_A59619416FA2E3E3772C94AD92EF7F04_label_en-US" xlink:label="lab_us-gaap_OrderOrProductionBacklogMember_A59619416FA2E3E3772C94AD92EF7F04" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Order or Production Backlog [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OrderOrProductionBacklogMember" xlink:label="loc_us-gaap_OrderOrProductionBacklogMember_A59619416FA2E3E3772C94AD92EF7F04" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OrderOrProductionBacklogMember_A59619416FA2E3E3772C94AD92EF7F04" xlink:to="lab_us-gaap_OrderOrProductionBacklogMember_A59619416FA2E3E3772C94AD92EF7F04" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract_38098F3349530A4C072F94AD92EF1E62_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract_38098F3349530A4C072F94AD92EF1E62" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Assets acquired</link:label>
    <link:label id="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract_38098F3349530A4C072F94AD92EF1E62_label_en-US" xlink:label="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract_38098F3349530A4C072F94AD92EF1E62" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract_38098F3349530A4C072F94AD92EF1E62" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract_38098F3349530A4C072F94AD92EF1E62" xlink:to="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract_38098F3349530A4C072F94AD92EF1E62" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents_232966174FD414CE2CC994AD92F0F219_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents_232966174FD414CE2CC994AD92F0F219" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash and cash equivalents</link:label>
    <link:label id="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents_232966174FD414CE2CC994AD92F0F219_label_en-US" xlink:label="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents_232966174FD414CE2CC994AD92F0F219" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents_232966174FD414CE2CC994AD92F0F219" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents_232966174FD414CE2CC994AD92F0F219" xlink:to="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents_232966174FD414CE2CC994AD92F0F219" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory_076217EAECC3CFBAC7D794AD92F04C05_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory_076217EAECC3CFBAC7D794AD92F04C05" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Inventories</link:label>
    <link:label id="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory_076217EAECC3CFBAC7D794AD92F04C05_label_en-US" xlink:label="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory_076217EAECC3CFBAC7D794AD92F04C05" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory_076217EAECC3CFBAC7D794AD92F04C05" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory_076217EAECC3CFBAC7D794AD92F04C05" xlink:to="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory_076217EAECC3CFBAC7D794AD92F04C05" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther_B840147A7BA9656B8F7894AD92F094C2_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther_B840147A7BA9656B8F7894AD92F094C2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other current assets</link:label>
    <link:label id="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther_B840147A7BA9656B8F7894AD92F094C2_label_en-US" xlink:label="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther_B840147A7BA9656B8F7894AD92F094C2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther_B840147A7BA9656B8F7894AD92F094C2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther_B840147A7BA9656B8F7894AD92F094C2" xlink:to="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther_B840147A7BA9656B8F7894AD92F094C2" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_C17B66D7BAC2251FED3F94AD92F1BD6E_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_C17B66D7BAC2251FED3F94AD92F1BD6E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Property, plant &amp; equipment</link:label>
    <link:label id="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_C17B66D7BAC2251FED3F94AD92F1BD6E_label_en-US" xlink:label="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_C17B66D7BAC2251FED3F94AD92F1BD6E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_C17B66D7BAC2251FED3F94AD92F1BD6E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_C17B66D7BAC2251FED3F94AD92F1BD6E" xlink:to="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_C17B66D7BAC2251FED3F94AD92F1BD6E" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles_F4C8E2BB8561EFC5A40994AD92F1359F_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles_F4C8E2BB8561EFC5A40994AD92F1359F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Intangible assets acquired</link:label>
    <link:label id="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles_F4C8E2BB8561EFC5A40994AD92F1359F_label_en-US" xlink:label="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles_F4C8E2BB8561EFC5A40994AD92F1359F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles_F4C8E2BB8561EFC5A40994AD92F1359F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles_F4C8E2BB8561EFC5A40994AD92F1359F" xlink:to="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles_F4C8E2BB8561EFC5A40994AD92F1359F" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets_476CC1EEA7E07D9B7FB494AD92F1DE96_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets_476CC1EEA7E07D9B7FB494AD92F1DE96" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other noncurrent assets</link:label>
    <link:label id="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets_476CC1EEA7E07D9B7FB494AD92F1DE96_label_en-US" xlink:label="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets_476CC1EEA7E07D9B7FB494AD92F1DE96" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets_476CC1EEA7E07D9B7FB494AD92F1DE96" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets_476CC1EEA7E07D9B7FB494AD92F1DE96" xlink:to="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets_476CC1EEA7E07D9B7FB494AD92F1DE96" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_6471F9F178A74849970E94AD92F1EF3B_totalLabel_en-US" xlink:label="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_6471F9F178A74849970E94AD92F1EF3B" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total assets acquired</link:label>
    <link:label id="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_6471F9F178A74849970E94AD92F1EF3B_label_en-US" xlink:label="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_6471F9F178A74849970E94AD92F1EF3B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_6471F9F178A74849970E94AD92F1EF3B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_6471F9F178A74849970E94AD92F1EF3B" xlink:to="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_6471F9F178A74849970E94AD92F1EF3B" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract_C6417B10C4AA78C9540294AD92F1EDE8_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract_C6417B10C4AA78C9540294AD92F1EDE8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Liabilities assumed</link:label>
    <link:label id="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract_C6417B10C4AA78C9540294AD92F1EDE8_label_en-US" xlink:label="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract_C6417B10C4AA78C9540294AD92F1EDE8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract_C6417B10C4AA78C9540294AD92F1EDE8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract_C6417B10C4AA78C9540294AD92F1EDE8" xlink:to="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract_C6417B10C4AA78C9540294AD92F1EDE8" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessCombinationContingentConsiderationLiability_2AB561B28ED55B90EC7794AD92F2A028_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessCombinationContingentConsiderationLiability_2AB561B28ED55B90EC7794AD92F2A028" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Contingent consideration</link:label>
    <link:label id="lab_us-gaap_BusinessCombinationContingentConsiderationLiability_2AB561B28ED55B90EC7794AD92F2A028_label_en-US" xlink:label="lab_us-gaap_BusinessCombinationContingentConsiderationLiability_2AB561B28ED55B90EC7794AD92F2A028" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Combination, Contingent Consideration, Liability</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationContingentConsiderationLiability" xlink:label="loc_us-gaap_BusinessCombinationContingentConsiderationLiability_2AB561B28ED55B90EC7794AD92F2A028" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessCombinationContingentConsiderationLiability_2AB561B28ED55B90EC7794AD92F2A028" xlink:to="lab_us-gaap_BusinessCombinationContingentConsiderationLiability_2AB561B28ED55B90EC7794AD92F2A028" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther_2D24A15CA2FB6C4DDCF194AD92F2DB86_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther_2D24A15CA2FB6C4DDCF194AD92F2DB86" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other noncurrent liabilities</link:label>
    <link:label id="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther_2D24A15CA2FB6C4DDCF194AD92F2DB86_label_en-US" xlink:label="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther_2D24A15CA2FB6C4DDCF194AD92F2DB86" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther_2D24A15CA2FB6C4DDCF194AD92F2DB86" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther_2D24A15CA2FB6C4DDCF194AD92F2DB86" xlink:to="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther_2D24A15CA2FB6C4DDCF194AD92F2DB86" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_2FB96AE20D90EB12D5F894AD92F254CB_totalLabel_en-US" xlink:label="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_2FB96AE20D90EB12D5F894AD92F254CB" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total liabilities assumed</link:label>
    <link:label id="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_2FB96AE20D90EB12D5F894AD92F254CB_label_en-US" xlink:label="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_2FB96AE20D90EB12D5F894AD92F254CB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_2FB96AE20D90EB12D5F894AD92F254CB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_2FB96AE20D90EB12D5F894AD92F254CB" xlink:to="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_2FB96AE20D90EB12D5F894AD92F254CB" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_71F8671E8DF36113EE1694AD92F25F97_totalLabel_en-US" xlink:label="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_71F8671E8DF36113EE1694AD92F25F97" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net assets acquired</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_71F8671E8DF36113EE1694AD92F25F97" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_71F8671E8DF36113EE1694AD92F25F97" xlink:to="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_71F8671E8DF36113EE1694AD92F25F97" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue_5122E555152D3197011094AD92F37415_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue_5122E555152D3197011094AD92F37415" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net assets acquired</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue" xlink:label="loc_us-gaap_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue_5122E555152D3197011094AD92F37415" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue_5122E555152D3197011094AD92F37415" xlink:to="lab_us-gaap_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue_5122E555152D3197011094AD92F37415" xlink:type="arc" />
    <link:label id="lab_us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock_DAEB10A881B1EA8940CBC56748FC0C9A_terseLabel_en-US" xlink:label="lab_us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock_DAEB10A881B1EA8940CBC56748FC0C9A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Employee Benefit Plans</link:label>
    <link:label id="lab_us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock_DAEB10A881B1EA8940CBC56748FC0C9A_label_en-US" xlink:label="lab_us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock_DAEB10A881B1EA8940CBC56748FC0C9A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Pension and Other Postretirement Benefits Disclosure [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock" xlink:label="loc_us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock_DAEB10A881B1EA8940CBC56748FC0C9A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock_DAEB10A881B1EA8940CBC56748FC0C9A" xlink:to="lab_us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock_DAEB10A881B1EA8940CBC56748FC0C9A" xlink:type="arc" />
    <link:label id="lab_us-gaap_MovementInStandardAndExtendedProductWarrantyIncreaseDecreaseRollForward_8962506FBA698F0EBED77536A5990B30_terseLabel_en-US" xlink:label="lab_us-gaap_MovementInStandardAndExtendedProductWarrantyIncreaseDecreaseRollForward_8962506FBA698F0EBED77536A5990B30" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]</link:label>
    <link:label id="lab_us-gaap_MovementInStandardAndExtendedProductWarrantyIncreaseDecreaseRollForward_8962506FBA698F0EBED77536A5990B30_label_en-US" xlink:label="lab_us-gaap_MovementInStandardAndExtendedProductWarrantyIncreaseDecreaseRollForward_8962506FBA698F0EBED77536A5990B30" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Movement in Standard and Extended Product Warranty Accrual, Increase (Decrease) [Roll Forward]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_MovementInStandardAndExtendedProductWarrantyIncreaseDecreaseRollForward" xlink:label="loc_us-gaap_MovementInStandardAndExtendedProductWarrantyIncreaseDecreaseRollForward_8962506FBA698F0EBED77536A5990B30" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_MovementInStandardAndExtendedProductWarrantyIncreaseDecreaseRollForward_8962506FBA698F0EBED77536A5990B30" xlink:to="lab_us-gaap_MovementInStandardAndExtendedProductWarrantyIncreaseDecreaseRollForward_8962506FBA698F0EBED77536A5990B30" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProductWarrantyAccrual_30DA8778154F65EF0D3E7536A5994AE0_periodStartLabel_en-US" xlink:label="lab_us-gaap_ProductWarrantyAccrual_30DA8778154F65EF0D3E7536A5994AE0" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Balance at beginning of year</link:label>
    <link:label id="lab_us-gaap_ProductWarrantyAccrual_30DA8778154F65EF0D3E7536A5994AE0_label_en-US" xlink:label="lab_us-gaap_ProductWarrantyAccrual_30DA8778154F65EF0D3E7536A5994AE0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Standard and Extended Product Warranty Accrual</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProductWarrantyAccrual" xlink:label="loc_us-gaap_ProductWarrantyAccrual_30DA8778154F65EF0D3E7536A5994AE0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProductWarrantyAccrual_30DA8778154F65EF0D3E7536A5994AE0" xlink:to="lab_us-gaap_ProductWarrantyAccrual_30DA8778154F65EF0D3E7536A5994AE0" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProductWarrantyAccrualAdditionsFromBusinessAcquisition_A385538BBF9C3F3AAD287536A5999F8E_terseLabel_en-US" xlink:label="lab_us-gaap_ProductWarrantyAccrualAdditionsFromBusinessAcquisition_A385538BBF9C3F3AAD287536A5999F8E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Acquisitions</link:label>
    <link:label id="lab_us-gaap_ProductWarrantyAccrualAdditionsFromBusinessAcquisition_A385538BBF9C3F3AAD287536A5999F8E_label_en-US" xlink:label="lab_us-gaap_ProductWarrantyAccrualAdditionsFromBusinessAcquisition_A385538BBF9C3F3AAD287536A5999F8E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Standard and Extended Product Warranty Accrual, Additions from Business Acquisition</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProductWarrantyAccrualAdditionsFromBusinessAcquisition" xlink:label="loc_us-gaap_ProductWarrantyAccrualAdditionsFromBusinessAcquisition_A385538BBF9C3F3AAD287536A5999F8E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProductWarrantyAccrualAdditionsFromBusinessAcquisition_A385538BBF9C3F3AAD287536A5999F8E" xlink:to="lab_us-gaap_ProductWarrantyAccrualAdditionsFromBusinessAcquisition_A385538BBF9C3F3AAD287536A5999F8E" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProductWarrantyAccrualWarrantiesIssued_3E6E7245095AE57DAF927536A599C218_terseLabel_en-US" xlink:label="lab_us-gaap_ProductWarrantyAccrualWarrantiesIssued_3E6E7245095AE57DAF927536A599C218" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Warranty expense</link:label>
    <link:label id="lab_us-gaap_ProductWarrantyAccrualWarrantiesIssued_3E6E7245095AE57DAF927536A599C218_label_en-US" xlink:label="lab_us-gaap_ProductWarrantyAccrualWarrantiesIssued_3E6E7245095AE57DAF927536A599C218" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Standard and Extended Product Warranty Accrual, Increase for Warranties Issued</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProductWarrantyAccrualWarrantiesIssued" xlink:label="loc_us-gaap_ProductWarrantyAccrualWarrantiesIssued_3E6E7245095AE57DAF927536A599C218" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProductWarrantyAccrualWarrantiesIssued_3E6E7245095AE57DAF927536A599C218" xlink:to="lab_us-gaap_ProductWarrantyAccrualWarrantiesIssued_3E6E7245095AE57DAF927536A599C218" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProductWarrantyAccrualPayments_38C0538E835D7417759C7536A5994DFB_negatedLabel_en-US" xlink:label="lab_us-gaap_ProductWarrantyAccrualPayments_38C0538E835D7417759C7536A5994DFB" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Warranty claim payments</link:label>
    <link:label id="lab_us-gaap_ProductWarrantyAccrualPayments_38C0538E835D7417759C7536A5994DFB_label_en-US" xlink:label="lab_us-gaap_ProductWarrantyAccrualPayments_38C0538E835D7417759C7536A5994DFB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Standard and Extended Product Warranty Accrual, Decrease for Payments</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProductWarrantyAccrualPayments" xlink:label="loc_us-gaap_ProductWarrantyAccrualPayments_38C0538E835D7417759C7536A5994DFB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProductWarrantyAccrualPayments_38C0538E835D7417759C7536A5994DFB" xlink:to="lab_us-gaap_ProductWarrantyAccrualPayments_38C0538E835D7417759C7536A5994DFB" xlink:type="arc" />
    <link:label id="lab_us-gaap_StandardAndExtendedProductWarrantyAccrualForeignCurrencyTranslationGainLoss_0196E0503B0528C8A0B07536A5995B6A_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_StandardAndExtendedProductWarrantyAccrualForeignCurrencyTranslationGainLoss_0196E0503B0528C8A0B07536A5995B6A" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Foreign currency impact/other</link:label>
    <link:label id="lab_us-gaap_StandardAndExtendedProductWarrantyAccrualForeignCurrencyTranslationGainLoss_0196E0503B0528C8A0B07536A5995B6A_label_en-US" xlink:label="lab_us-gaap_StandardAndExtendedProductWarrantyAccrualForeignCurrencyTranslationGainLoss_0196E0503B0528C8A0B07536A5995B6A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Standard and Extended Product Warranty Accrual, Foreign Currency Translation Gain (Loss)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StandardAndExtendedProductWarrantyAccrualForeignCurrencyTranslationGainLoss" xlink:label="loc_us-gaap_StandardAndExtendedProductWarrantyAccrualForeignCurrencyTranslationGainLoss_0196E0503B0528C8A0B07536A5995B6A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StandardAndExtendedProductWarrantyAccrualForeignCurrencyTranslationGainLoss_0196E0503B0528C8A0B07536A5995B6A" xlink:to="lab_us-gaap_StandardAndExtendedProductWarrantyAccrualForeignCurrencyTranslationGainLoss_0196E0503B0528C8A0B07536A5995B6A" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProductWarrantyAccrual_62D76F57349B502C38537536A599DD1D_periodEndLabel_en-US" xlink:label="lab_us-gaap_ProductWarrantyAccrual_62D76F57349B502C38537536A599DD1D" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Balance at end of period</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProductWarrantyAccrual" xlink:label="loc_us-gaap_ProductWarrantyAccrual_62D76F57349B502C38537536A599DD1D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProductWarrantyAccrual_62D76F57349B502C38537536A599DD1D" xlink:to="lab_us-gaap_ProductWarrantyAccrual_62D76F57349B502C38537536A599DD1D" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherDebtSecuritiesMember_2E8B0EB29025E8EF2D1355C671682952_terseLabel_en-US" xlink:label="lab_us-gaap_OtherDebtSecuritiesMember_2E8B0EB29025E8EF2D1355C671682952" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other Borrowings</link:label>
    <link:label id="lab_us-gaap_OtherDebtSecuritiesMember_2E8B0EB29025E8EF2D1355C671682952_label_en-US" xlink:label="lab_us-gaap_OtherDebtSecuritiesMember_2E8B0EB29025E8EF2D1355C671682952" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Debt Obligations [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherDebtSecuritiesMember" xlink:label="loc_us-gaap_OtherDebtSecuritiesMember_2E8B0EB29025E8EF2D1355C671682952" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherDebtSecuritiesMember_2E8B0EB29025E8EF2D1355C671682952" xlink:to="lab_us-gaap_OtherDebtSecuritiesMember_2E8B0EB29025E8EF2D1355C671682952" xlink:type="arc" />
    <link:label id="lab_us-gaap_LongTermDebt_A81EB0D99CD4B9A1918E55C6716BB4E2_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebt_A81EB0D99CD4B9A1918E55C6716BB4E2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Long-term debt</link:label>
    <link:label id="lab_us-gaap_LongTermDebt_A81EB0D99CD4B9A1918E55C6716BB4E2_label_en-US" xlink:label="lab_us-gaap_LongTermDebt_A81EB0D99CD4B9A1918E55C6716BB4E2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Debt</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebt" xlink:label="loc_us-gaap_LongTermDebt_A81EB0D99CD4B9A1918E55C6716BB4E2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebt_A81EB0D99CD4B9A1918E55C6716BB4E2" xlink:to="lab_us-gaap_LongTermDebt_A81EB0D99CD4B9A1918E55C6716BB4E2" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtAndCapitalLeaseObligations_6BD4935112E99C2F8F0455C6716B0610_totalLabel_en-US" xlink:label="lab_us-gaap_DebtAndCapitalLeaseObligations_6BD4935112E99C2F8F0455C6716B0610" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total</link:label>
    <link:label id="lab_us-gaap_DebtAndCapitalLeaseObligations_6BD4935112E99C2F8F0455C6716B0610_label_en-US" xlink:label="lab_us-gaap_DebtAndCapitalLeaseObligations_6BD4935112E99C2F8F0455C6716B0610" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt and Capital Lease Obligations</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtAndCapitalLeaseObligations" xlink:label="loc_us-gaap_DebtAndCapitalLeaseObligations_6BD4935112E99C2F8F0455C6716B0610" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtAndCapitalLeaseObligations_6BD4935112E99C2F8F0455C6716B0610" xlink:to="lab_us-gaap_DebtAndCapitalLeaseObligations_6BD4935112E99C2F8F0455C6716B0610" xlink:type="arc" />
    <link:label id="lab_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_35D72DC1EF7FE40A7FA955C6716BBED4_verboseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_35D72DC1EF7FE40A7FA955C6716BBED4" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Less - current portion</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_35D72DC1EF7FE40A7FA955C6716BBED4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_35D72DC1EF7FE40A7FA955C6716BBED4" xlink:to="lab_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_35D72DC1EF7FE40A7FA955C6716BBED4" xlink:type="arc" />
    <link:label id="lab_us-gaap_LongTermDebtAndCapitalLeaseObligations_804724D18F0B5739C2A055C6716CAF15_verboseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtAndCapitalLeaseObligations_804724D18F0B5739C2A055C6716CAF15" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Long-term portion</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligations" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_804724D18F0B5739C2A055C6716CAF15" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_804724D18F0B5739C2A055C6716CAF15" xlink:to="lab_us-gaap_LongTermDebtAndCapitalLeaseObligations_804724D18F0B5739C2A055C6716CAF15" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_925440E32694CC6B7AD555C6716CC124_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_925440E32694CC6B7AD555C6716CC124" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unamortized discount and debt issuance cost</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_925440E32694CC6B7AD555C6716CC124_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_925440E32694CC6B7AD555C6716CC124" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_925440E32694CC6B7AD555C6716CC124" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_925440E32694CC6B7AD555C6716CC124" xlink:to="lab_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_925440E32694CC6B7AD555C6716CC124" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfProductWarrantyLiabilityTableTextBlock_D809EC83C9AD6A51A4D8C567493E63E8_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfProductWarrantyLiabilityTableTextBlock_D809EC83C9AD6A51A4D8C567493E63E8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Changes in Product Warranty Reserve</link:label>
    <link:label id="lab_us-gaap_ScheduleOfProductWarrantyLiabilityTableTextBlock_D809EC83C9AD6A51A4D8C567493E63E8_label_en-US" xlink:label="lab_us-gaap_ScheduleOfProductWarrantyLiabilityTableTextBlock_D809EC83C9AD6A51A4D8C567493E63E8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Product Warranty Liability [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfProductWarrantyLiabilityTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfProductWarrantyLiabilityTableTextBlock_D809EC83C9AD6A51A4D8C567493E63E8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfProductWarrantyLiabilityTableTextBlock_D809EC83C9AD6A51A4D8C567493E63E8" xlink:to="lab_us-gaap_ScheduleOfProductWarrantyLiabilityTableTextBlock_D809EC83C9AD6A51A4D8C567493E63E8" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_38198D977C8C2A683B3CC5AC4CF7E515_terseLabel_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_38198D977C8C2A683B3CC5AC4CF7E515" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accumulated Other Comprehensive Income (Loss) [Table]</link:label>
    <link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_38198D977C8C2A683B3CC5AC4CF7E515_label_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_38198D977C8C2A683B3CC5AC4CF7E515" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accumulated Other Comprehensive Income (Loss) [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossTable" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_38198D977C8C2A683B3CC5AC4CF7E515" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_38198D977C8C2A683B3CC5AC4CF7E515" xlink:to="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_38198D977C8C2A683B3CC5AC4CF7E515" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccumulatedTranslationAdjustmentMember_F3D86F7BF3CB47975B26C5AC4CF8C1A9_terseLabel_en-US" xlink:label="lab_us-gaap_AccumulatedTranslationAdjustmentMember_F3D86F7BF3CB47975B26C5AC4CF8C1A9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Foreign currency translation</link:label>
    <link:label id="lab_us-gaap_AccumulatedTranslationAdjustmentMember_F3D86F7BF3CB47975B26C5AC4CF8C1A9_label_en-US" xlink:label="lab_us-gaap_AccumulatedTranslationAdjustmentMember_F3D86F7BF3CB47975B26C5AC4CF8C1A9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accumulated Foreign Currency Adjustment Attributable to Parent [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedTranslationAdjustmentMember" xlink:label="loc_us-gaap_AccumulatedTranslationAdjustmentMember_F3D86F7BF3CB47975B26C5AC4CF8C1A9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccumulatedTranslationAdjustmentMember_F3D86F7BF3CB47975B26C5AC4CF8C1A9" xlink:to="lab_us-gaap_AccumulatedTranslationAdjustmentMember_F3D86F7BF3CB47975B26C5AC4CF8C1A9" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeMember_9F5AE5B05D255BF1716CC5AC4CF82993_terseLabel_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeMember_9F5AE5B05D255BF1716CC5AC4CF82993" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">AOCI Attributable to Parent</link:label>
    <link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeMember_9F5AE5B05D255BF1716CC5AC4CF82993_label_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeMember_9F5AE5B05D255BF1716CC5AC4CF82993" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">AOCI Attributable to Parent [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_9F5AE5B05D255BF1716CC5AC4CF82993" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_9F5AE5B05D255BF1716CC5AC4CF82993" xlink:to="lab_us-gaap_AccumulatedOtherComprehensiveIncomeMember_9F5AE5B05D255BF1716CC5AC4CF82993" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_4C21A2A7E6C8E45331DEC5AC4CF90AAB_terseLabel_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_4C21A2A7E6C8E45331DEC5AC4CF90AAB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accumulated Other Comprehensive Income (Loss) [Line Items]</link:label>
    <link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_4C21A2A7E6C8E45331DEC5AC4CF90AAB_label_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_4C21A2A7E6C8E45331DEC5AC4CF90AAB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accumulated Other Comprehensive Income (Loss) [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_4C21A2A7E6C8E45331DEC5AC4CF90AAB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_4C21A2A7E6C8E45331DEC5AC4CF90AAB" xlink:to="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_4C21A2A7E6C8E45331DEC5AC4CF90AAB" xlink:type="arc" />
    <link:label id="lab_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_9CE34CE1D8E78E9012F7C5AC4CF9934F_terseLabel_en-US" xlink:label="lab_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_9CE34CE1D8E78E9012F7C5AC4CF9934F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">AOCI Attributable to Parent, Net of Tax [Roll Forward]</link:label>
    <link:label id="lab_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_9CE34CE1D8E78E9012F7C5AC4CF9934F_label_en-US" xlink:label="lab_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_9CE34CE1D8E78E9012F7C5AC4CF9934F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">AOCI Attributable to Parent, Net of Tax [Roll Forward]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AOCIAttributableToParentNetOfTaxRollForward" xlink:label="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_9CE34CE1D8E78E9012F7C5AC4CF9934F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_9CE34CE1D8E78E9012F7C5AC4CF9934F" xlink:to="lab_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_9CE34CE1D8E78E9012F7C5AC4CF9934F" xlink:type="arc" />
    <link:label id="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_927A19C4489CED5C809AC5AC4CF944DD_periodStartLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_927A19C4489CED5C809AC5AC4CF944DD" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Beginning Balance</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_927A19C4489CED5C809AC5AC4CF944DD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_927A19C4489CED5C809AC5AC4CF944DD" xlink:to="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_927A19C4489CED5C809AC5AC4CF944DD" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_1E9C99C001125BC02A88C5AC4CF90C0E_terseLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_1E9C99C001125BC02A88C5AC4CF90C0E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other comprehensive income (loss) before reclassifications</link:label>
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_1E9C99C001125BC02A88C5AC4CF90C0E_label_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_1E9C99C001125BC02A88C5AC4CF90C0E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Comprehensive Income (Loss), before Reclassifications, Net of Tax</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_1E9C99C001125BC02A88C5AC4CF90C0E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_1E9C99C001125BC02A88C5AC4CF90C0E" xlink:to="lab_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_1E9C99C001125BC02A88C5AC4CF90C0E" xlink:type="arc" />
    <link:label id="lab_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_9E04CD62A9B4E571A8F1C5AC4CFA194E_negatedLabel_en-US" xlink:label="lab_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_9E04CD62A9B4E571A8F1C5AC4CFA194E" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Amounts reclassified from accumulated other comprehensive income</link:label>
    <link:label id="lab_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_9E04CD62A9B4E571A8F1C5AC4CFA194E_label_en-US" xlink:label="lab_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_9E04CD62A9B4E571A8F1C5AC4CFA194E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax" xlink:label="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_9E04CD62A9B4E571A8F1C5AC4CFA194E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_9E04CD62A9B4E571A8F1C5AC4CFA194E" xlink:to="lab_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_9E04CD62A9B4E571A8F1C5AC4CFA194E" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTax_14089B2F884556AAAF70C5AC4CFAB6A6_totalLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTax_14089B2F884556AAAF70C5AC4CFAB6A6" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net current period other comprehensive income (loss)</link:label>
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTax_14089B2F884556AAAF70C5AC4CFAB6A6_label_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTax_14089B2F884556AAAF70C5AC4CFAB6A6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Comprehensive Income (Loss), Net of Tax</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_14089B2F884556AAAF70C5AC4CFAB6A6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_14089B2F884556AAAF70C5AC4CFAB6A6" xlink:to="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTax_14089B2F884556AAAF70C5AC4CFAB6A6" xlink:type="arc" />
    <link:label id="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_97E01448D3C1C92B0C38C5AC4CFAD590_periodEndLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_97E01448D3C1C92B0C38C5AC4CFAD590" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Ending Balance</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_97E01448D3C1C92B0C38C5AC4CFAD590" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_97E01448D3C1C92B0C38C5AC4CFAD590" xlink:to="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_97E01448D3C1C92B0C38C5AC4CFAD590" xlink:type="arc" />
    <link:label id="lab_us-gaap_NatureOfOperations_A1D2873EF063F4EABD08C5674A431BC9_terseLabel_en-US" xlink:label="lab_us-gaap_NatureOfOperations_A1D2873EF063F4EABD08C5674A431BC9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Business</link:label>
    <link:label id="lab_us-gaap_NatureOfOperations_A1D2873EF063F4EABD08C5674A431BC9_label_en-US" xlink:label="lab_us-gaap_NatureOfOperations_A1D2873EF063F4EABD08C5674A431BC9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Nature of Operations [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NatureOfOperations" xlink:label="loc_us-gaap_NatureOfOperations_A1D2873EF063F4EABD08C5674A431BC9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NatureOfOperations_A1D2873EF063F4EABD08C5674A431BC9" xlink:to="lab_us-gaap_NatureOfOperations_A1D2873EF063F4EABD08C5674A431BC9" xlink:type="arc" />
    <link:label id="lab_wab_WeightedaverageRemainingLeaseTermAbstract_8535F88815287A4AC3B546E7F53A0F9F_terseLabel_en-US" xlink:label="lab_wab_WeightedaverageRemainingLeaseTermAbstract_8535F88815287A4AC3B546E7F53A0F9F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Weighted-average remaining lease term (years)</link:label>
    <link:label id="lab_wab_WeightedaverageRemainingLeaseTermAbstract_8535F88815287A4AC3B546E7F53A0F9F_label_en-US" xlink:label="lab_wab_WeightedaverageRemainingLeaseTermAbstract_8535F88815287A4AC3B546E7F53A0F9F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Weighted-average Remaining Lease Term [Abstract]</link:label>
    <link:label id="lab_wab_WeightedaverageRemainingLeaseTermAbstract_8535F88815287A4AC3B546E7F53A0F9F_documentation_en-US" xlink:label="lab_wab_WeightedaverageRemainingLeaseTermAbstract_8535F88815287A4AC3B546E7F53A0F9F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Weighted-average Remaining Lease Term [Abstract]</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_WeightedaverageRemainingLeaseTermAbstract" xlink:label="loc_wab_WeightedaverageRemainingLeaseTermAbstract_8535F88815287A4AC3B546E7F53A0F9F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_WeightedaverageRemainingLeaseTermAbstract_8535F88815287A4AC3B546E7F53A0F9F" xlink:to="lab_wab_WeightedaverageRemainingLeaseTermAbstract_8535F88815287A4AC3B546E7F53A0F9F" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_E1FDD114F91B81D7AFDA46E3F6F0B2CB_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_E1FDD114F91B81D7AFDA46E3F6F0B2CB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Operating Leases</link:label>
    <link:label id="lab_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_E1FDD114F91B81D7AFDA46E3F6F0B2CB_label_en-US" xlink:label="lab_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_E1FDD114F91B81D7AFDA46E3F6F0B2CB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Lease, Weighted Average Remaining Lease Term</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1" xlink:label="loc_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_E1FDD114F91B81D7AFDA46E3F6F0B2CB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_E1FDD114F91B81D7AFDA46E3F6F0B2CB" xlink:to="lab_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_E1FDD114F91B81D7AFDA46E3F6F0B2CB" xlink:type="arc" />
    <link:label id="lab_us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1_8AE6D43B1AA6D540525D46E450FBB019_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1_8AE6D43B1AA6D540525D46E450FBB019" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Finance Leases</link:label>
    <link:label id="lab_us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1_8AE6D43B1AA6D540525D46E450FBB019_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1_8AE6D43B1AA6D540525D46E450FBB019" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finance Lease, Weighted Average Remaining Lease Term</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1" xlink:label="loc_us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1_8AE6D43B1AA6D540525D46E450FBB019" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1_8AE6D43B1AA6D540525D46E450FBB019" xlink:to="lab_us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1_8AE6D43B1AA6D540525D46E450FBB019" xlink:type="arc" />
    <link:label id="lab_wab_WeightedaverageDiscountRateAbstract_4B9DF69EAE2F339BEAF746E8727B8D6E_terseLabel_en-US" xlink:label="lab_wab_WeightedaverageDiscountRateAbstract_4B9DF69EAE2F339BEAF746E8727B8D6E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Weighted-average discount rate</link:label>
    <link:label id="lab_wab_WeightedaverageDiscountRateAbstract_4B9DF69EAE2F339BEAF746E8727B8D6E_label_en-US" xlink:label="lab_wab_WeightedaverageDiscountRateAbstract_4B9DF69EAE2F339BEAF746E8727B8D6E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Weighted-average Discount Rate [Abstract]</link:label>
    <link:label id="lab_wab_WeightedaverageDiscountRateAbstract_4B9DF69EAE2F339BEAF746E8727B8D6E_documentation_en-US" xlink:label="lab_wab_WeightedaverageDiscountRateAbstract_4B9DF69EAE2F339BEAF746E8727B8D6E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Weighted-average Discount Rate [Abstract]</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_WeightedaverageDiscountRateAbstract" xlink:label="loc_wab_WeightedaverageDiscountRateAbstract_4B9DF69EAE2F339BEAF746E8727B8D6E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_WeightedaverageDiscountRateAbstract_4B9DF69EAE2F339BEAF746E8727B8D6E" xlink:to="lab_wab_WeightedaverageDiscountRateAbstract_4B9DF69EAE2F339BEAF746E8727B8D6E" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_DDF11E704135D92C903D46E4A5D4D98E_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_DDF11E704135D92C903D46E4A5D4D98E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Operating Leases</link:label>
    <link:label id="lab_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_DDF11E704135D92C903D46E4A5D4D98E_label_en-US" xlink:label="lab_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_DDF11E704135D92C903D46E4A5D4D98E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Lease, Weighted Average Discount Rate, Percent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent" xlink:label="loc_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_DDF11E704135D92C903D46E4A5D4D98E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_DDF11E704135D92C903D46E4A5D4D98E" xlink:to="lab_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_DDF11E704135D92C903D46E4A5D4D98E" xlink:type="arc" />
    <link:label id="lab_us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent_AD05BD8185790D11CA3046E5070CA95E_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent_AD05BD8185790D11CA3046E5070CA95E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Finance Leases</link:label>
    <link:label id="lab_us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent_AD05BD8185790D11CA3046E5070CA95E_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent_AD05BD8185790D11CA3046E5070CA95E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finance Lease, Weighted Average Discount Rate, Percent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent" xlink:label="loc_us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent_AD05BD8185790D11CA3046E5070CA95E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent_AD05BD8185790D11CA3046E5070CA95E" xlink:to="lab_us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent_AD05BD8185790D11CA3046E5070CA95E" xlink:type="arc" />
    <link:label id="lab_us-gaap_ForeignCurrencyTransactionGainLossRealized_4E51DAEF37EF68111C097536A4AFFE29_verboseLabel_en-US" xlink:label="lab_us-gaap_ForeignCurrencyTransactionGainLossRealized_4E51DAEF37EF68111C097536A4AFFE29" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Foreign currency (loss) gain</link:label>
    <link:label id="lab_us-gaap_ForeignCurrencyTransactionGainLossRealized_4E51DAEF37EF68111C097536A4AFFE29_label_en-US" xlink:label="lab_us-gaap_ForeignCurrencyTransactionGainLossRealized_4E51DAEF37EF68111C097536A4AFFE29" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Foreign Currency Transaction Gain (Loss), Realized</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ForeignCurrencyTransactionGainLossRealized" xlink:label="loc_us-gaap_ForeignCurrencyTransactionGainLossRealized_4E51DAEF37EF68111C097536A4AFFE29" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ForeignCurrencyTransactionGainLossRealized_4E51DAEF37EF68111C097536A4AFFE29" xlink:to="lab_us-gaap_ForeignCurrencyTransactionGainLossRealized_4E51DAEF37EF68111C097536A4AFFE29" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncomeLossFromEquityMethodInvestments_D64888449CAE0886331B7536A4BF931B_verboseLabel_en-US" xlink:label="lab_us-gaap_IncomeLossFromEquityMethodInvestments_D64888449CAE0886331B7536A4BF931B" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Equity income</link:label>
    <link:label id="lab_us-gaap_IncomeLossFromEquityMethodInvestments_D64888449CAE0886331B7536A4BF931B_label_en-US" xlink:label="lab_us-gaap_IncomeLossFromEquityMethodInvestments_D64888449CAE0886331B7536A4BF931B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income (Loss) from Equity Method Investments</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeLossFromEquityMethodInvestments" xlink:label="loc_us-gaap_IncomeLossFromEquityMethodInvestments_D64888449CAE0886331B7536A4BF931B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeLossFromEquityMethodInvestments_D64888449CAE0886331B7536A4BF931B" xlink:to="lab_us-gaap_IncomeLossFromEquityMethodInvestments_D64888449CAE0886331B7536A4BF931B" xlink:type="arc" />
    <link:label id="lab_wab_PeriodicDefinedBenefitsExpenseReversalofExpenseExcludingInterestCostAndServiceCostComponent_DBD0B2B610AE3EC2BBEC7536A4BF310A_negatedTerseLabel_en-US" xlink:label="lab_wab_PeriodicDefinedBenefitsExpenseReversalofExpenseExcludingInterestCostAndServiceCostComponent_DBD0B2B610AE3EC2BBEC7536A4BF310A" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Expected return on pension assets/amortization</link:label>
    <link:label id="lab_wab_PeriodicDefinedBenefitsExpenseReversalofExpenseExcludingInterestCostAndServiceCostComponent_DBD0B2B610AE3EC2BBEC7536A4BF310A_label_en-US" xlink:label="lab_wab_PeriodicDefinedBenefitsExpenseReversalofExpenseExcludingInterestCostAndServiceCostComponent_DBD0B2B610AE3EC2BBEC7536A4BF310A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Periodic Defined Benefits Expense Reversal of Expense Excluding Interest Cost And Service Cost Component</link:label>
    <link:label id="lab_wab_PeriodicDefinedBenefitsExpenseReversalofExpenseExcludingInterestCostAndServiceCostComponent_DBD0B2B610AE3EC2BBEC7536A4BF310A_documentation_en-US" xlink:label="lab_wab_PeriodicDefinedBenefitsExpenseReversalofExpenseExcludingInterestCostAndServiceCostComponent_DBD0B2B610AE3EC2BBEC7536A4BF310A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Periodic Defined Benefits Expense Reversal of Expense Excluding Interest Cost And Service Cost Component</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_PeriodicDefinedBenefitsExpenseReversalofExpenseExcludingInterestCostAndServiceCostComponent" xlink:label="loc_wab_PeriodicDefinedBenefitsExpenseReversalofExpenseExcludingInterestCostAndServiceCostComponent_DBD0B2B610AE3EC2BBEC7536A4BF310A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_PeriodicDefinedBenefitsExpenseReversalofExpenseExcludingInterestCostAndServiceCostComponent_DBD0B2B610AE3EC2BBEC7536A4BF310A" xlink:to="lab_wab_PeriodicDefinedBenefitsExpenseReversalofExpenseExcludingInterestCostAndServiceCostComponent_DBD0B2B610AE3EC2BBEC7536A4BF310A" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherNonoperatingIncomeExpense_0818FC2AFC8C3377938A7536A4BFA513_terseLabel_en-US" xlink:label="lab_us-gaap_OtherNonoperatingIncomeExpense_0818FC2AFC8C3377938A7536A4BFA513" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other miscellaneous expense (income)</link:label>
    <link:label id="lab_us-gaap_OtherNonoperatingIncomeExpense_0818FC2AFC8C3377938A7536A4BFA513_label_en-US" xlink:label="lab_us-gaap_OtherNonoperatingIncomeExpense_0818FC2AFC8C3377938A7536A4BFA513" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Nonoperating Income (Expense)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherNonoperatingIncomeExpense" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_0818FC2AFC8C3377938A7536A4BFA513" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherNonoperatingIncomeExpense_0818FC2AFC8C3377938A7536A4BFA513" xlink:to="lab_us-gaap_OtherNonoperatingIncomeExpense_0818FC2AFC8C3377938A7536A4BFA513" xlink:type="arc" />
    <link:label id="lab_us-gaap_NonoperatingIncomeExpense_4553F94C13AE0770679A7536A4BF14D1_totalLabel_en-US" xlink:label="lab_us-gaap_NonoperatingIncomeExpense_4553F94C13AE0770679A7536A4BF14D1" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total other (expense) income, net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NonoperatingIncomeExpense" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_4553F94C13AE0770679A7536A4BF14D1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_4553F94C13AE0770679A7536A4BF14D1" xlink:to="lab_us-gaap_NonoperatingIncomeExpense_4553F94C13AE0770679A7536A4BF14D1" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_5A58D9B0A5565A08A246C56747949814_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_5A58D9B0A5565A08A246C56747949814" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Computation of Basic and Diluted Earnings Per Share</link:label>
    <link:label id="lab_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_5A58D9B0A5565A08A246C56747949814_label_en-US" xlink:label="lab_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_5A58D9B0A5565A08A246C56747949814" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_5A58D9B0A5565A08A246C56747949814" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_5A58D9B0A5565A08A246C56747949814" xlink:to="lab_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_5A58D9B0A5565A08A246C56747949814" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfInventoryCurrentTableTextBlock_0C287AD2ACFEC0064B19C56747B39133_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfInventoryCurrentTableTextBlock_0C287AD2ACFEC0064B19C56747B39133" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Components of Inventory, Net of Reserves</link:label>
    <link:label id="lab_us-gaap_ScheduleOfInventoryCurrentTableTextBlock_0C287AD2ACFEC0064B19C56747B39133_label_en-US" xlink:label="lab_us-gaap_ScheduleOfInventoryCurrentTableTextBlock_0C287AD2ACFEC0064B19C56747B39133" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Inventory, Current [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfInventoryCurrentTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfInventoryCurrentTableTextBlock_0C287AD2ACFEC0064B19C56747B39133" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfInventoryCurrentTableTextBlock_0C287AD2ACFEC0064B19C56747B39133" xlink:to="lab_us-gaap_ScheduleOfInventoryCurrentTableTextBlock_0C287AD2ACFEC0064B19C56747B39133" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock_84AC6280010BF662BDA24678EE65745E_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock_84AC6280010BF662BDA24678EE65745E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Changes in Accumulated Other Comprehensive Loss by Component, Net of Tax</link:label>
    <link:label id="lab_us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock_84AC6280010BF662BDA24678EE65745E_label_en-US" xlink:label="lab_us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock_84AC6280010BF662BDA24678EE65745E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock_84AC6280010BF662BDA24678EE65745E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock_84AC6280010BF662BDA24678EE65745E" xlink:to="lab_us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock_84AC6280010BF662BDA24678EE65745E" xlink:type="arc" />
    <link:label id="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTableTextBlock_28248BAA49E8384A32F84678EE65D1ED_terseLabel_en-US" xlink:label="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTableTextBlock_28248BAA49E8384A32F84678EE65D1ED" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Reclassifications Out of Accumulated Other Comprehensive Loss</link:label>
    <link:label id="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTableTextBlock_28248BAA49E8384A32F84678EE65D1ED_label_en-US" xlink:label="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTableTextBlock_28248BAA49E8384A32F84678EE65D1ED" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTableTextBlock" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTableTextBlock_28248BAA49E8384A32F84678EE65D1ED" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTableTextBlock_28248BAA49E8384A32F84678EE65D1ED" xlink:to="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTableTextBlock_28248BAA49E8384A32F84678EE65D1ED" xlink:type="arc" />
    <link:label id="lab_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock_69C26166925426A614A9C5674A2437B0_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock_69C26166925426A614A9C5674A2437B0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Derivative Financial Instruments and Hedging</link:label>
    <link:label id="lab_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock_69C26166925426A614A9C5674A2437B0_label_en-US" xlink:label="lab_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock_69C26166925426A614A9C5674A2437B0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative Instruments and Hedging Activities Disclosure [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock" xlink:label="loc_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock_69C26166925426A614A9C5674A2437B0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock_69C26166925426A614A9C5674A2437B0" xlink:to="lab_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock_69C26166925426A614A9C5674A2437B0" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_7860EFE31E82F1CCF5C07536A750EBA8_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_7860EFE31E82F1CCF5C07536A750EBA8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Operating Activities</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_7860EFE31E82F1CCF5C07536A750EBA8_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_7860EFE31E82F1CCF5C07536A750EBA8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_7860EFE31E82F1CCF5C07536A750EBA8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_7860EFE31E82F1CCF5C07536A750EBA8" xlink:to="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_7860EFE31E82F1CCF5C07536A750EBA8" xlink:type="arc" />
    <link:label id="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_8BF9E99C4AF43BC633FC7536A7507864_terseLabel_en-US" xlink:label="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_8BF9E99C4AF43BC633FC7536A7507864" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Adjustments to reconcile net income to cash provided by operations:</link:label>
    <link:label id="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_8BF9E99C4AF43BC633FC7536A7507864_label_en-US" xlink:label="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_8BF9E99C4AF43BC633FC7536A7507864" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_8BF9E99C4AF43BC633FC7536A7507864" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_8BF9E99C4AF43BC633FC7536A7507864" xlink:to="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_8BF9E99C4AF43BC633FC7536A7507864" xlink:type="arc" />
    <link:label id="lab_us-gaap_DepreciationAndAmortization_37BAB3DEEE7F127D7EB67536A7502D06_terseLabel_en-US" xlink:label="lab_us-gaap_DepreciationAndAmortization_37BAB3DEEE7F127D7EB67536A7502D06" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Depreciation and amortization</link:label>
    <link:label id="lab_us-gaap_DepreciationAndAmortization_37BAB3DEEE7F127D7EB67536A7502D06_label_en-US" xlink:label="lab_us-gaap_DepreciationAndAmortization_37BAB3DEEE7F127D7EB67536A7502D06" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Depreciation, Depletion and Amortization, Nonproduction</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DepreciationAndAmortization" xlink:label="loc_us-gaap_DepreciationAndAmortization_37BAB3DEEE7F127D7EB67536A7502D06" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DepreciationAndAmortization_37BAB3DEEE7F127D7EB67536A7502D06" xlink:to="lab_us-gaap_DepreciationAndAmortization_37BAB3DEEE7F127D7EB67536A7502D06" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensation_43CA610160CB7ACFF2F47536A750149D_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensation_43CA610160CB7ACFF2F47536A750149D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Stock-based compensation expense</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensation_43CA610160CB7ACFF2F47536A750149D_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensation_43CA610160CB7ACFF2F47536A750149D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensation" xlink:label="loc_us-gaap_ShareBasedCompensation_43CA610160CB7ACFF2F47536A750149D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensation_43CA610160CB7ACFF2F47536A750149D" xlink:to="lab_us-gaap_ShareBasedCompensation_43CA610160CB7ACFF2F47536A750149D" xlink:type="arc" />
    <link:label id="lab_us-gaap_GainLossOnSaleOfPropertyPlantEquipment_373D08D329F5CBCF4EDA7536A750B894_negatedLabel_en-US" xlink:label="lab_us-gaap_GainLossOnSaleOfPropertyPlantEquipment_373D08D329F5CBCF4EDA7536A750B894" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Loss (gain) on disposal of property, plant and equipment</link:label>
    <link:label id="lab_us-gaap_GainLossOnSaleOfPropertyPlantEquipment_373D08D329F5CBCF4EDA7536A750B894_label_en-US" xlink:label="lab_us-gaap_GainLossOnSaleOfPropertyPlantEquipment_373D08D329F5CBCF4EDA7536A750B894" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Gain (Loss) on Disposition of Property Plant Equipment</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GainLossOnSaleOfPropertyPlantEquipment" xlink:label="loc_us-gaap_GainLossOnSaleOfPropertyPlantEquipment_373D08D329F5CBCF4EDA7536A750B894" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GainLossOnSaleOfPropertyPlantEquipment_373D08D329F5CBCF4EDA7536A750B894" xlink:to="lab_us-gaap_GainLossOnSaleOfPropertyPlantEquipment_373D08D329F5CBCF4EDA7536A750B894" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_6FE1374B9A2A2264120D7536A7508015_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_6FE1374B9A2A2264120D7536A7508015" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Changes in operating assets and liabilities, net of acquisitions</link:label>
    <link:label id="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_6FE1374B9A2A2264120D7536A7508015_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_6FE1374B9A2A2264120D7536A7508015" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Operating Capital [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:label="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_6FE1374B9A2A2264120D7536A7508015" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_6FE1374B9A2A2264120D7536A7508015" xlink:to="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_6FE1374B9A2A2264120D7536A7508015" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncreaseDecreaseInAccountsReceivable_202A93BA4A9699A2448A7536A750D8AF_negatedLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccountsReceivable_202A93BA4A9699A2448A7536A750D8AF" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Accounts receivable and unbilled accounts receivable</link:label>
    <link:label id="lab_us-gaap_IncreaseDecreaseInAccountsReceivable_202A93BA4A9699A2448A7536A750D8AF_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccountsReceivable_202A93BA4A9699A2448A7536A750D8AF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Accounts Receivable</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_202A93BA4A9699A2448A7536A750D8AF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_202A93BA4A9699A2448A7536A750D8AF" xlink:to="lab_us-gaap_IncreaseDecreaseInAccountsReceivable_202A93BA4A9699A2448A7536A750D8AF" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncreaseDecreaseInInventories_036586BB141ADB63DE407536A750FA59_negatedLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInInventories_036586BB141ADB63DE407536A750FA59" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Inventories</link:label>
    <link:label id="lab_us-gaap_IncreaseDecreaseInInventories_036586BB141ADB63DE407536A750FA59_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInInventories_036586BB141ADB63DE407536A750FA59" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Inventories</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInInventories" xlink:label="loc_us-gaap_IncreaseDecreaseInInventories_036586BB141ADB63DE407536A750FA59" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInInventories_036586BB141ADB63DE407536A750FA59" xlink:to="lab_us-gaap_IncreaseDecreaseInInventories_036586BB141ADB63DE407536A750FA59" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncreaseDecreaseInAccountsPayable_9CE26D8A9D513C0FCF087536A7509633_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccountsPayable_9CE26D8A9D513C0FCF087536A7509633" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accounts payable</link:label>
    <link:label id="lab_us-gaap_IncreaseDecreaseInAccountsPayable_9CE26D8A9D513C0FCF087536A7509633_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccountsPayable_9CE26D8A9D513C0FCF087536A7509633" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Accounts Payable</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayable" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayable_9CE26D8A9D513C0FCF087536A7509633" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInAccountsPayable_9CE26D8A9D513C0FCF087536A7509633" xlink:to="lab_us-gaap_IncreaseDecreaseInAccountsPayable_9CE26D8A9D513C0FCF087536A7509633" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable_2B3EBCA5EF01A1C1E0D07536A750E18B_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable_2B3EBCA5EF01A1C1E0D07536A750E18B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accrued income taxes</link:label>
    <link:label id="lab_us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable_2B3EBCA5EF01A1C1E0D07536A750E18B_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable_2B3EBCA5EF01A1C1E0D07536A750E18B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Income Taxes Payable</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable" xlink:label="loc_us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable_2B3EBCA5EF01A1C1E0D07536A750E18B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable_2B3EBCA5EF01A1C1E0D07536A750E18B" xlink:to="lab_us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable_2B3EBCA5EF01A1C1E0D07536A750E18B" xlink:type="arc" />
    <link:label id="lab_wab_IncreaseDecreaseInAccruedLiabilitiesAndCustomerDeposits_35EBAF2815390C92854C7536A75012CA_terseLabel_en-US" xlink:label="lab_wab_IncreaseDecreaseInAccruedLiabilitiesAndCustomerDeposits_35EBAF2815390C92854C7536A75012CA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accrued liabilities and customer deposits</link:label>
    <link:label id="lab_wab_IncreaseDecreaseInAccruedLiabilitiesAndCustomerDeposits_35EBAF2815390C92854C7536A75012CA_label_en-US" xlink:label="lab_wab_IncreaseDecreaseInAccruedLiabilitiesAndCustomerDeposits_35EBAF2815390C92854C7536A75012CA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase Decrease In Accrued Liabilities And Customer Deposits</link:label>
    <link:label id="lab_wab_IncreaseDecreaseInAccruedLiabilitiesAndCustomerDeposits_35EBAF2815390C92854C7536A75012CA_documentation_en-US" xlink:label="lab_wab_IncreaseDecreaseInAccruedLiabilitiesAndCustomerDeposits_35EBAF2815390C92854C7536A75012CA" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Increase decrease in accrued liabilities and customer deposits.</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_IncreaseDecreaseInAccruedLiabilitiesAndCustomerDeposits" xlink:label="loc_wab_IncreaseDecreaseInAccruedLiabilitiesAndCustomerDeposits_35EBAF2815390C92854C7536A75012CA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_IncreaseDecreaseInAccruedLiabilitiesAndCustomerDeposits_35EBAF2815390C92854C7536A75012CA" xlink:to="lab_wab_IncreaseDecreaseInAccruedLiabilitiesAndCustomerDeposits_35EBAF2815390C92854C7536A75012CA" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_6EBB179CFEB3A65C65757536A7509D99_negatedLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_6EBB179CFEB3A65C65757536A7509D99" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Other assets and liabilities</link:label>
    <link:label id="lab_us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_6EBB179CFEB3A65C65757536A7509D99_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_6EBB179CFEB3A65C65757536A7509D99" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Other Operating Assets and Liabilities, Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_6EBB179CFEB3A65C65757536A7509D99" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_6EBB179CFEB3A65C65757536A7509D99" xlink:to="lab_us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_6EBB179CFEB3A65C65757536A7509D99" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_BCF75F4E0FCE5A36D9C27536A750E633_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_BCF75F4E0FCE5A36D9C27536A750E633" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net cash provided by operating activities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_BCF75F4E0FCE5A36D9C27536A750E633" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_BCF75F4E0FCE5A36D9C27536A750E633" xlink:to="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_BCF75F4E0FCE5A36D9C27536A750E633" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_843BCFDCC428C921765F7536A750FA5D_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_843BCFDCC428C921765F7536A750FA5D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Investing Activities</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_843BCFDCC428C921765F7536A750FA5D_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_843BCFDCC428C921765F7536A750FA5D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_843BCFDCC428C921765F7536A750FA5D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_843BCFDCC428C921765F7536A750FA5D" xlink:to="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_843BCFDCC428C921765F7536A750FA5D" xlink:type="arc" />
    <link:label id="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_EBD6A8D721B5F0E8D01F7536A75011B3_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_EBD6A8D721B5F0E8D01F7536A75011B3" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Purchase of property, plant and equipment</link:label>
    <link:label id="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_EBD6A8D721B5F0E8D01F7536A75011B3_label_en-US" xlink:label="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_EBD6A8D721B5F0E8D01F7536A75011B3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments to Acquire Property, Plant, and Equipment</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_EBD6A8D721B5F0E8D01F7536A75011B3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_EBD6A8D721B5F0E8D01F7536A75011B3" xlink:to="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_EBD6A8D721B5F0E8D01F7536A75011B3" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_325DAC11ED46D07A4C967536A7501A3B_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_325DAC11ED46D07A4C967536A7501A3B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Proceeds from disposal of property, plant and equipment</link:label>
    <link:label id="lab_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_325DAC11ED46D07A4C967536A7501A3B_label_en-US" xlink:label="lab_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_325DAC11ED46D07A4C967536A7501A3B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from Sale of Property, Plant, and Equipment</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment" xlink:label="loc_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_325DAC11ED46D07A4C967536A7501A3B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_325DAC11ED46D07A4C967536A7501A3B" xlink:to="lab_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_325DAC11ED46D07A4C967536A7501A3B" xlink:type="arc" />
    <link:label id="lab_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_9AF00FD49923BEFE516D7536A750DD4B_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_9AF00FD49923BEFE516D7536A750DD4B" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Acquisitions of businesses, net of cash acquired</link:label>
    <link:label id="lab_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_9AF00FD49923BEFE516D7536A750DD4B_label_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_9AF00FD49923BEFE516D7536A750DD4B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments to Acquire Businesses, Net of Cash Acquired</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_9AF00FD49923BEFE516D7536A750DD4B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_9AF00FD49923BEFE516D7536A750DD4B" xlink:to="lab_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_9AF00FD49923BEFE516D7536A750DD4B" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_FBA0A73EF161454A688B7536A7505A2A_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_FBA0A73EF161454A688B7536A7505A2A" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net cash used for investing activities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_FBA0A73EF161454A688B7536A7505A2A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_FBA0A73EF161454A688B7536A7505A2A" xlink:to="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_FBA0A73EF161454A688B7536A7505A2A" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_DC6DFDD0B42BF0FF05C07536A7504810_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_DC6DFDD0B42BF0FF05C07536A7504810" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financing Activities</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_DC6DFDD0B42BF0FF05C07536A7504810_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_DC6DFDD0B42BF0FF05C07536A7504810" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_DC6DFDD0B42BF0FF05C07536A7504810" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_DC6DFDD0B42BF0FF05C07536A7504810" xlink:to="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_DC6DFDD0B42BF0FF05C07536A7504810" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet_E49459B8406E84C3FEFD7536A7507248_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet_E49459B8406E84C3FEFD7536A7507248" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Proceeds from debt</link:label>
    <link:label id="lab_us-gaap_ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet_E49459B8406E84C3FEFD7536A7507248_label_en-US" xlink:label="lab_us-gaap_ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet_E49459B8406E84C3FEFD7536A7507248" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from Issuance of Long-term Debt and Capital Securities, Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet_E49459B8406E84C3FEFD7536A7507248" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet_E49459B8406E84C3FEFD7536A7507248" xlink:to="lab_us-gaap_ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet_E49459B8406E84C3FEFD7536A7507248" xlink:type="arc" />
    <link:label id="lab_us-gaap_RepaymentsOfLongTermDebtAndCapitalSecurities_1D2F2C05EF5CD2B015877536A75054E9_negatedLabel_en-US" xlink:label="lab_us-gaap_RepaymentsOfLongTermDebtAndCapitalSecurities_1D2F2C05EF5CD2B015877536A75054E9" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Payments of debt</link:label>
    <link:label id="lab_us-gaap_RepaymentsOfLongTermDebtAndCapitalSecurities_1D2F2C05EF5CD2B015877536A75054E9_label_en-US" xlink:label="lab_us-gaap_RepaymentsOfLongTermDebtAndCapitalSecurities_1D2F2C05EF5CD2B015877536A75054E9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RepaymentsOfLongTermDebtAndCapitalSecurities" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebtAndCapitalSecurities_1D2F2C05EF5CD2B015877536A75054E9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RepaymentsOfLongTermDebtAndCapitalSecurities_1D2F2C05EF5CD2B015877536A75054E9" xlink:to="lab_us-gaap_RepaymentsOfLongTermDebtAndCapitalSecurities_1D2F2C05EF5CD2B015877536A75054E9" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions_A9F804519BD7F50347AC7536A7502B90_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions_A9F804519BD7F50347AC7536A7502B90" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Proceeds from exercise of stock options and other benefit plans</link:label>
    <link:label id="lab_us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions_A9F804519BD7F50347AC7536A7502B90_label_en-US" xlink:label="lab_us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions_A9F804519BD7F50347AC7536A7502B90" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from Issuance of Shares under Incentive and Share-based Compensation Plans, Including Stock Options</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions_A9F804519BD7F50347AC7536A7502B90" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions_A9F804519BD7F50347AC7536A7502B90" xlink:to="lab_us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions_A9F804519BD7F50347AC7536A7502B90" xlink:type="arc" />
    <link:label id="lab_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_20F5F251B827C9FDADA47536A750756E_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_20F5F251B827C9FDADA47536A750756E" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Payment of income tax withholding on share-based compensation</link:label>
    <link:label id="lab_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_20F5F251B827C9FDADA47536A750756E_label_en-US" xlink:label="lab_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_20F5F251B827C9FDADA47536A750756E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments Related to Tax Withholding for Share-based Compensation</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation" xlink:label="loc_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_20F5F251B827C9FDADA47536A750756E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_20F5F251B827C9FDADA47536A750756E" xlink:to="lab_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_20F5F251B827C9FDADA47536A750756E" xlink:type="arc" />
    <link:label id="lab_us-gaap_PaymentsOfDividendsCommonStock_36982B71C0C398E007E47536A750D695_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsOfDividendsCommonStock_36982B71C0C398E007E47536A750D695" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Cash dividends ($0.12 and $0.12 per share for the three months ended March 31, 2019 and 2018, respectively)</link:label>
    <link:label id="lab_us-gaap_PaymentsOfDividendsCommonStock_36982B71C0C398E007E47536A750D695_label_en-US" xlink:label="lab_us-gaap_PaymentsOfDividendsCommonStock_36982B71C0C398E007E47536A750D695" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments of Ordinary Dividends, Common Stock</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsOfDividendsCommonStock" xlink:label="loc_us-gaap_PaymentsOfDividendsCommonStock_36982B71C0C398E007E47536A750D695" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsOfDividendsCommonStock_36982B71C0C398E007E47536A750D695" xlink:to="lab_us-gaap_PaymentsOfDividendsCommonStock_36982B71C0C398E007E47536A750D695" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_C8ECE458C85ADCA59AD27536A750DFFD_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_C8ECE458C85ADCA59AD27536A750DFFD" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net cash provided by financing activities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_C8ECE458C85ADCA59AD27536A750DFFD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_C8ECE458C85ADCA59AD27536A750DFFD" xlink:to="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_C8ECE458C85ADCA59AD27536A750DFFD" xlink:type="arc" />
    <link:label id="lab_us-gaap_SignificantAccountingPoliciesTextBlock_374B57453AACDADDAEA28E532BFDBB6E_terseLabel_en-US" xlink:label="lab_us-gaap_SignificantAccountingPoliciesTextBlock_374B57453AACDADDAEA28E532BFDBB6E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accounting Policies</link:label>
    <link:label id="lab_us-gaap_SignificantAccountingPoliciesTextBlock_374B57453AACDADDAEA28E532BFDBB6E_label_en-US" xlink:label="lab_us-gaap_SignificantAccountingPoliciesTextBlock_374B57453AACDADDAEA28E532BFDBB6E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Significant Accounting Policies [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SignificantAccountingPoliciesTextBlock" xlink:label="loc_us-gaap_SignificantAccountingPoliciesTextBlock_374B57453AACDADDAEA28E532BFDBB6E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SignificantAccountingPoliciesTextBlock_374B57453AACDADDAEA28E532BFDBB6E" xlink:to="lab_us-gaap_SignificantAccountingPoliciesTextBlock_374B57453AACDADDAEA28E532BFDBB6E" xlink:type="arc" />
    <link:label id="lab_us-gaap_StatementOfStockholdersEquityAbstract_4902FE4A139BED5FCC9A8E532C089A9D_label_en-US" xlink:label="lab_us-gaap_StatementOfStockholdersEquityAbstract_4902FE4A139BED5FCC9A8E532C089A9D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement of Stockholders' Equity [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementOfStockholdersEquityAbstract" xlink:label="loc_us-gaap_StatementOfStockholdersEquityAbstract_4902FE4A139BED5FCC9A8E532C089A9D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementOfStockholdersEquityAbstract_4902FE4A139BED5FCC9A8E532C089A9D" xlink:to="lab_us-gaap_StatementOfStockholdersEquityAbstract_4902FE4A139BED5FCC9A8E532C089A9D" xlink:type="arc" />
    <link:label id="lab_us-gaap_AdditionalPaidInCapitalMember_2BBDB635BF3BF24B26268E532C0952C4_terseLabel_en-US" xlink:label="lab_us-gaap_AdditionalPaidInCapitalMember_2BBDB635BF3BF24B26268E532C0952C4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Additional Paid-in Capital</link:label>
    <link:label id="lab_us-gaap_AdditionalPaidInCapitalMember_2BBDB635BF3BF24B26268E532C0952C4_label_en-US" xlink:label="lab_us-gaap_AdditionalPaidInCapitalMember_2BBDB635BF3BF24B26268E532C0952C4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Additional Paid-in Capital [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdditionalPaidInCapitalMember" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_2BBDB635BF3BF24B26268E532C0952C4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AdditionalPaidInCapitalMember_2BBDB635BF3BF24B26268E532C0952C4" xlink:to="lab_us-gaap_AdditionalPaidInCapitalMember_2BBDB635BF3BF24B26268E532C0952C4" xlink:type="arc" />
    <link:label id="lab_us-gaap_TreasuryStockMember_9520453D1E0343B3188C8E532C0A9A00_terseLabel_en-US" xlink:label="lab_us-gaap_TreasuryStockMember_9520453D1E0343B3188C8E532C0A9A00" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Treasury Stock</link:label>
    <link:label id="lab_us-gaap_TreasuryStockMember_9520453D1E0343B3188C8E532C0A9A00_label_en-US" xlink:label="lab_us-gaap_TreasuryStockMember_9520453D1E0343B3188C8E532C0A9A00" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Treasury Stock [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TreasuryStockMember" xlink:label="loc_us-gaap_TreasuryStockMember_9520453D1E0343B3188C8E532C0A9A00" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_TreasuryStockMember_9520453D1E0343B3188C8E532C0A9A00" xlink:to="lab_us-gaap_TreasuryStockMember_9520453D1E0343B3188C8E532C0A9A00" xlink:type="arc" />
    <link:label id="lab_us-gaap_RetainedEarningsMember_45F0436362BBBA192E128E532C0A2BF1_terseLabel_en-US" xlink:label="lab_us-gaap_RetainedEarningsMember_45F0436362BBBA192E128E532C0A2BF1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Retained Earnings</link:label>
    <link:label id="lab_us-gaap_RetainedEarningsMember_45F0436362BBBA192E128E532C0A2BF1_label_en-US" xlink:label="lab_us-gaap_RetainedEarningsMember_45F0436362BBBA192E128E532C0A2BF1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Retained Earnings [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetainedEarningsMember" xlink:label="loc_us-gaap_RetainedEarningsMember_45F0436362BBBA192E128E532C0A2BF1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RetainedEarningsMember_45F0436362BBBA192E128E532C0A2BF1" xlink:to="lab_us-gaap_RetainedEarningsMember_45F0436362BBBA192E128E532C0A2BF1" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeMember_442EBE98E8B7B9A714E38E532C0A732E_verboseLabel_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeMember_442EBE98E8B7B9A714E38E532C0A732E" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Accumulated Other Comprehensive Loss</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_442EBE98E8B7B9A714E38E532C0A732E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_442EBE98E8B7B9A714E38E532C0A732E" xlink:to="lab_us-gaap_AccumulatedOtherComprehensiveIncomeMember_442EBE98E8B7B9A714E38E532C0A732E" xlink:type="arc" />
    <link:label id="lab_us-gaap_NoncontrollingInterestMember_4CB2DB056DBE5EBF50148E532C0A071E_terseLabel_en-US" xlink:label="lab_us-gaap_NoncontrollingInterestMember_4CB2DB056DBE5EBF50148E532C0A071E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Noncontrolling Interest</link:label>
    <link:label id="lab_us-gaap_NoncontrollingInterestMember_4CB2DB056DBE5EBF50148E532C0A071E_label_en-US" xlink:label="lab_us-gaap_NoncontrollingInterestMember_4CB2DB056DBE5EBF50148E532C0A071E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Noncontrolling Interest [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NoncontrollingInterestMember" xlink:label="loc_us-gaap_NoncontrollingInterestMember_4CB2DB056DBE5EBF50148E532C0A071E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NoncontrollingInterestMember_4CB2DB056DBE5EBF50148E532C0A071E" xlink:to="lab_us-gaap_NoncontrollingInterestMember_4CB2DB056DBE5EBF50148E532C0A071E" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_65CC703931D57447BB438E532C0B9085_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_65CC703931D57447BB438E532C0B9085" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Stockholders' Equity [Roll Forward]</link:label>
    <link:label id="lab_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_65CC703931D57447BB438E532C0B9085_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_65CC703931D57447BB438E532C0B9085" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Stockholders' Equity [Roll Forward]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_65CC703931D57447BB438E532C0B9085" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_65CC703931D57447BB438E532C0B9085" xlink:to="lab_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_65CC703931D57447BB438E532C0B9085" xlink:type="arc" />
    <link:label id="lab_us-gaap_SharesIssued_8CE6394B36FDDD6BE8978E532C0BB26E_periodStartLabel_en-US" xlink:label="lab_us-gaap_SharesIssued_8CE6394B36FDDD6BE8978E532C0BB26E" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Beginning Balance (in shares)</link:label>
    <link:label id="lab_us-gaap_SharesIssued_8CE6394B36FDDD6BE8978E532C0BB26E_label_en-US" xlink:label="lab_us-gaap_SharesIssued_8CE6394B36FDDD6BE8978E532C0BB26E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Shares, Issued</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SharesIssued" xlink:label="loc_us-gaap_SharesIssued_8CE6394B36FDDD6BE8978E532C0BB26E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SharesIssued_8CE6394B36FDDD6BE8978E532C0BB26E" xlink:to="lab_us-gaap_SharesIssued_8CE6394B36FDDD6BE8978E532C0BB26E" xlink:type="arc" />
    <link:label id="lab_us-gaap_DividendsCash_3EE33227CA1005E7A2228E532C0B69E1_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_DividendsCash_3EE33227CA1005E7A2228E532C0B69E1" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Cash dividends</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DividendsCash" xlink:label="loc_us-gaap_DividendsCash_3EE33227CA1005E7A2228E532C0B69E1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DividendsCash_3EE33227CA1005E7A2228E532C0B69E1" xlink:to="lab_us-gaap_DividendsCash_3EE33227CA1005E7A2228E532C0B69E1" xlink:type="arc" />
    <link:label id="lab_wab_StockGrantedExercisedAndCancelledForVariousEquityInstruments_178D79C5BA6481786DD98E532C0C8BBE_terseLabel_en-US" xlink:label="lab_wab_StockGrantedExercisedAndCancelledForVariousEquityInstruments_178D79C5BA6481786DD98E532C0C8BBE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Proceeds from treasury stock issued from the exercise of stock options and other benefit plans, net of tax (in shares)</link:label>
    <link:label id="lab_wab_StockGrantedExercisedAndCancelledForVariousEquityInstruments_178D79C5BA6481786DD98E532C0C8BBE_label_en-US" xlink:label="lab_wab_StockGrantedExercisedAndCancelledForVariousEquityInstruments_178D79C5BA6481786DD98E532C0C8BBE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stock Granted Exercised And Cancelled For Various Equity Instruments</link:label>
    <link:label id="lab_wab_StockGrantedExercisedAndCancelledForVariousEquityInstruments_178D79C5BA6481786DD98E532C0C8BBE_documentation_en-US" xlink:label="lab_wab_StockGrantedExercisedAndCancelledForVariousEquityInstruments_178D79C5BA6481786DD98E532C0C8BBE" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Stock awards granted, exercised and cancelled for the following forms of stock compensation 1) Stock Options 2) Restricted Stock Awards and 3) Incentive Stock Awards.</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_StockGrantedExercisedAndCancelledForVariousEquityInstruments" xlink:label="loc_wab_StockGrantedExercisedAndCancelledForVariousEquityInstruments_178D79C5BA6481786DD98E532C0C8BBE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_StockGrantedExercisedAndCancelledForVariousEquityInstruments_178D79C5BA6481786DD98E532C0C8BBE" xlink:to="lab_wab_StockGrantedExercisedAndCancelledForVariousEquityInstruments_178D79C5BA6481786DD98E532C0C8BBE" xlink:type="arc" />
    <link:label id="lab_us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_C89E5EBF1EB545582FF98E532C0BD876_terseLabel_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_C89E5EBF1EB545582FF98E532C0BD876" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Proceeds from treasury stock issued from the exercise of stock options and other benefit plans, net of tax</link:label>
    <link:label id="lab_us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_C89E5EBF1EB545582FF98E532C0BD876_label_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_C89E5EBF1EB545582FF98E532C0BD876" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stock Issued During Period, Value, Stock Options Exercised</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_C89E5EBF1EB545582FF98E532C0BD876" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_C89E5EBF1EB545582FF98E532C0BD876" xlink:to="lab_us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_C89E5EBF1EB545582FF98E532C0BD876" xlink:type="arc" />
    <link:label id="lab_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_80C6D20B821C255D84618E532C0CAADD_terseLabel_en-US" xlink:label="lab_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_80C6D20B821C255D84618E532C0CAADD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Stock based compensation</link:label>
    <link:label id="lab_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_80C6D20B821C255D84618E532C0CAADD_label_en-US" xlink:label="lab_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_80C6D20B821C255D84618E532C0CAADD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_80C6D20B821C255D84618E532C0CAADD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_80C6D20B821C255D84618E532C0CAADD" xlink:to="lab_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_80C6D20B821C255D84618E532C0CAADD" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProfitLoss_6A42058FD70CBAC425DB8E532C0C2801_terseLabel_en-US" xlink:label="lab_us-gaap_ProfitLoss_6A42058FD70CBAC425DB8E532C0C2801" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net income (loss)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProfitLoss" xlink:label="loc_us-gaap_ProfitLoss_6A42058FD70CBAC425DB8E532C0C2801" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProfitLoss_6A42058FD70CBAC425DB8E532C0C2801" xlink:to="lab_us-gaap_ProfitLoss_6A42058FD70CBAC425DB8E532C0C2801" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTax_12198E7CFE321CEF9D6F8E532C0CCAA7_terseLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTax_12198E7CFE321CEF9D6F8E532C0CCAA7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other comprehensive income, net of tax</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_12198E7CFE321CEF9D6F8E532C0CCAA7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_12198E7CFE321CEF9D6F8E532C0CCAA7" xlink:to="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTax_12198E7CFE321CEF9D6F8E532C0CCAA7" xlink:type="arc" />
    <link:label id="lab_us-gaap_StockIssuedDuringPeriodSharesAcquisitions_0F59134A2A64DD0993028E7A0DBE2DB9_terseLabel_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodSharesAcquisitions_0F59134A2A64DD0993028E7A0DBE2DB9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Acquisition of General Electric Transportation (in shares)</link:label>
    <link:label id="lab_us-gaap_StockIssuedDuringPeriodSharesAcquisitions_0F59134A2A64DD0993028E7A0DBE2DB9_label_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodSharesAcquisitions_0F59134A2A64DD0993028E7A0DBE2DB9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stock Issued During Period, Shares, Acquisitions</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesAcquisitions" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesAcquisitions_0F59134A2A64DD0993028E7A0DBE2DB9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockIssuedDuringPeriodSharesAcquisitions_0F59134A2A64DD0993028E7A0DBE2DB9" xlink:to="lab_us-gaap_StockIssuedDuringPeriodSharesAcquisitions_0F59134A2A64DD0993028E7A0DBE2DB9" xlink:type="arc" />
    <link:label id="lab_us-gaap_StockIssuedDuringPeriodValueAcquisitions_8AD6F711F78C33C1537C8E532C0C518D_terseLabel_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodValueAcquisitions_8AD6F711F78C33C1537C8E532C0C518D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Acquisition of General Electric Transportation</link:label>
    <link:label id="lab_us-gaap_StockIssuedDuringPeriodValueAcquisitions_8AD6F711F78C33C1537C8E532C0C518D_label_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodValueAcquisitions_8AD6F711F78C33C1537C8E532C0C518D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stock Issued During Period, Value, Acquisitions</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueAcquisitions" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueAcquisitions_8AD6F711F78C33C1537C8E532C0C518D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockIssuedDuringPeriodValueAcquisitions_8AD6F711F78C33C1537C8E532C0C518D" xlink:to="lab_us-gaap_StockIssuedDuringPeriodValueAcquisitions_8AD6F711F78C33C1537C8E532C0C518D" xlink:type="arc" />
    <link:label id="lab_us-gaap_StockholdersEquityOther_891AB778D9D76C15B66F8E532C0C62E4_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquityOther_891AB778D9D76C15B66F8E532C0C62E4" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Other owner changes</link:label>
    <link:label id="lab_us-gaap_StockholdersEquityOther_891AB778D9D76C15B66F8E532C0C62E4_label_en-US" xlink:label="lab_us-gaap_StockholdersEquityOther_891AB778D9D76C15B66F8E532C0C62E4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stockholders' Equity, Other</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquityOther" xlink:label="loc_us-gaap_StockholdersEquityOther_891AB778D9D76C15B66F8E532C0C62E4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockholdersEquityOther_891AB778D9D76C15B66F8E532C0C62E4" xlink:to="lab_us-gaap_StockholdersEquityOther_891AB778D9D76C15B66F8E532C0C62E4" xlink:type="arc" />
    <link:label id="lab_us-gaap_SharesIssued_D377CE3834BF5938E7F08E532C0D2A98_periodEndLabel_en-US" xlink:label="lab_us-gaap_SharesIssued_D377CE3834BF5938E7F08E532C0D2A98" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Ending Balance (in shares)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SharesIssued" xlink:label="loc_us-gaap_SharesIssued_D377CE3834BF5938E7F08E532C0D2A98" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SharesIssued_D377CE3834BF5938E7F08E532C0D2A98" xlink:to="lab_us-gaap_SharesIssued_D377CE3834BF5938E7F08E532C0D2A98" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfGoodwillTextBlock_83E26A72856D6A342978C5674A43AF3C_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfGoodwillTextBlock_83E26A72856D6A342978C5674A43AF3C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Change in the Carrying Amount of Goodwill by Segment</link:label>
    <link:label id="lab_us-gaap_ScheduleOfGoodwillTextBlock_83E26A72856D6A342978C5674A43AF3C_label_en-US" xlink:label="lab_us-gaap_ScheduleOfGoodwillTextBlock_83E26A72856D6A342978C5674A43AF3C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Goodwill [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfGoodwillTextBlock" xlink:label="loc_us-gaap_ScheduleOfGoodwillTextBlock_83E26A72856D6A342978C5674A43AF3C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfGoodwillTextBlock_83E26A72856D6A342978C5674A43AF3C" xlink:to="lab_us-gaap_ScheduleOfGoodwillTextBlock_83E26A72856D6A342978C5674A43AF3C" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock_E495B393B9FD9C75CBACC5674A4387FE_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock_E495B393B9FD9C75CBACC5674A4387FE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Intangible Assets of the Company, Other Than Goodwill and Trade Names</link:label>
    <link:label id="lab_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock_E495B393B9FD9C75CBACC5674A4387FE_label_en-US" xlink:label="lab_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock_E495B393B9FD9C75CBACC5674A4387FE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Finite-Lived Intangible Assets [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock_E495B393B9FD9C75CBACC5674A4387FE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock_E495B393B9FD9C75CBACC5674A4387FE" xlink:to="lab_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock_E495B393B9FD9C75CBACC5674A4387FE" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock_0BF1E09C37B99D333D6AC5674A437AC1_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock_0BF1E09C37B99D333D6AC5674A437AC1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amortization Expense</link:label>
    <link:label id="lab_us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock_0BF1E09C37B99D333D6AC5674A437AC1_label_en-US" xlink:label="lab_us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock_0BF1E09C37B99D333D6AC5674A437AC1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock" xlink:label="loc_us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock_0BF1E09C37B99D333D6AC5674A437AC1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock_0BF1E09C37B99D333D6AC5674A437AC1" xlink:to="lab_us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock_0BF1E09C37B99D333D6AC5674A437AC1" xlink:type="arc" />
    <link:label id="lab_wab_ChangeinContractwithCustomerAssetRollForward_8A3CCDFAC4CE5522A8BC7536A68BA69A_terseLabel_en-US" xlink:label="lab_wab_ChangeinContractwithCustomerAssetRollForward_8A3CCDFAC4CE5522A8BC7536A68BA69A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Contract Assets</link:label>
    <link:label id="lab_wab_ChangeinContractwithCustomerAssetRollForward_8A3CCDFAC4CE5522A8BC7536A68BA69A_label_en-US" xlink:label="lab_wab_ChangeinContractwithCustomerAssetRollForward_8A3CCDFAC4CE5522A8BC7536A68BA69A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Change in Contract with Customer Asset [Roll Forward]</link:label>
    <link:label id="lab_wab_ChangeinContractwithCustomerAssetRollForward_8A3CCDFAC4CE5522A8BC7536A68BA69A_documentation_en-US" xlink:label="lab_wab_ChangeinContractwithCustomerAssetRollForward_8A3CCDFAC4CE5522A8BC7536A68BA69A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Change in Contract with Customer Asset [Roll Forward]</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_ChangeinContractwithCustomerAssetRollForward" xlink:label="loc_wab_ChangeinContractwithCustomerAssetRollForward_8A3CCDFAC4CE5522A8BC7536A68BA69A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_ChangeinContractwithCustomerAssetRollForward_8A3CCDFAC4CE5522A8BC7536A68BA69A" xlink:to="lab_wab_ChangeinContractwithCustomerAssetRollForward_8A3CCDFAC4CE5522A8BC7536A68BA69A" xlink:type="arc" />
    <link:label id="lab_us-gaap_ContractWithCustomerAssetNet_098E17E017173A9B6C627536A68B19EE_periodStartLabel_en-US" xlink:label="lab_us-gaap_ContractWithCustomerAssetNet_098E17E017173A9B6C627536A68B19EE" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Balance at beginning of year</link:label>
    <link:label id="lab_us-gaap_ContractWithCustomerAssetNet_098E17E017173A9B6C627536A68B19EE_label_en-US" xlink:label="lab_us-gaap_ContractWithCustomerAssetNet_098E17E017173A9B6C627536A68B19EE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Contract with Customer, Asset, Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ContractWithCustomerAssetNet" xlink:label="loc_us-gaap_ContractWithCustomerAssetNet_098E17E017173A9B6C627536A68B19EE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ContractWithCustomerAssetNet_098E17E017173A9B6C627536A68B19EE" xlink:to="lab_us-gaap_ContractWithCustomerAssetNet_098E17E017173A9B6C627536A68B19EE" xlink:type="arc" />
    <link:label id="lab_us-gaap_ContractWithCustomerAssetIncreaseDecreaseForContractAcquiredInBusinessCombination_CB0570625DED0C7071D7757C1B72A38E_terseLabel_en-US" xlink:label="lab_us-gaap_ContractWithCustomerAssetIncreaseDecreaseForContractAcquiredInBusinessCombination_CB0570625DED0C7071D7757C1B72A38E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Acquisitions</link:label>
    <link:label id="lab_us-gaap_ContractWithCustomerAssetIncreaseDecreaseForContractAcquiredInBusinessCombination_CB0570625DED0C7071D7757C1B72A38E_label_en-US" xlink:label="lab_us-gaap_ContractWithCustomerAssetIncreaseDecreaseForContractAcquiredInBusinessCombination_CB0570625DED0C7071D7757C1B72A38E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Contract with Customer, Asset, Increase (Decrease) for Contract Acquired in Business Combination</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ContractWithCustomerAssetIncreaseDecreaseForContractAcquiredInBusinessCombination" xlink:label="loc_us-gaap_ContractWithCustomerAssetIncreaseDecreaseForContractAcquiredInBusinessCombination_CB0570625DED0C7071D7757C1B72A38E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ContractWithCustomerAssetIncreaseDecreaseForContractAcquiredInBusinessCombination_CB0570625DED0C7071D7757C1B72A38E" xlink:to="lab_us-gaap_ContractWithCustomerAssetIncreaseDecreaseForContractAcquiredInBusinessCombination_CB0570625DED0C7071D7757C1B72A38E" xlink:type="arc" />
    <link:label id="lab_wab_ContractWithCustomerAssetNewContractAdditions_A7C4D15DB4A90953C5147536A68BC5B9_terseLabel_en-US" xlink:label="lab_wab_ContractWithCustomerAssetNewContractAdditions_A7C4D15DB4A90953C5147536A68BC5B9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Recognized in current year</link:label>
    <link:label id="lab_wab_ContractWithCustomerAssetNewContractAdditions_A7C4D15DB4A90953C5147536A68BC5B9_label_en-US" xlink:label="lab_wab_ContractWithCustomerAssetNewContractAdditions_A7C4D15DB4A90953C5147536A68BC5B9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Contract With Customer Asset New Contract Additions</link:label>
    <link:label id="lab_wab_ContractWithCustomerAssetNewContractAdditions_A7C4D15DB4A90953C5147536A68BC5B9_documentation_en-US" xlink:label="lab_wab_ContractWithCustomerAssetNewContractAdditions_A7C4D15DB4A90953C5147536A68BC5B9" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Contract With Customer Asset New Contract Additions</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_ContractWithCustomerAssetNewContractAdditions" xlink:label="loc_wab_ContractWithCustomerAssetNewContractAdditions_A7C4D15DB4A90953C5147536A68BC5B9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_ContractWithCustomerAssetNewContractAdditions_A7C4D15DB4A90953C5147536A68BC5B9" xlink:to="lab_wab_ContractWithCustomerAssetNewContractAdditions_A7C4D15DB4A90953C5147536A68BC5B9" xlink:type="arc" />
    <link:label id="lab_us-gaap_ContractWithCustomerAssetReclassifiedToReceivable_CF0C6B39510B2E79515D7536A68B2D7F_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_ContractWithCustomerAssetReclassifiedToReceivable_CF0C6B39510B2E79515D7536A68B2D7F" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Reclassified to accounts receivable</link:label>
    <link:label id="lab_us-gaap_ContractWithCustomerAssetReclassifiedToReceivable_CF0C6B39510B2E79515D7536A68B2D7F_label_en-US" xlink:label="lab_us-gaap_ContractWithCustomerAssetReclassifiedToReceivable_CF0C6B39510B2E79515D7536A68B2D7F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Contract with Customer, Asset, Reclassified to Receivable</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ContractWithCustomerAssetReclassifiedToReceivable" xlink:label="loc_us-gaap_ContractWithCustomerAssetReclassifiedToReceivable_CF0C6B39510B2E79515D7536A68B2D7F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ContractWithCustomerAssetReclassifiedToReceivable_CF0C6B39510B2E79515D7536A68B2D7F" xlink:to="lab_us-gaap_ContractWithCustomerAssetReclassifiedToReceivable_CF0C6B39510B2E79515D7536A68B2D7F" xlink:type="arc" />
    <link:label id="lab_wab_ContractWithCustomerAssetIncreaseDecreaseForeignCurrencyTranslationAdjustment_C2E5B027D33AE1229DC07536A68B63BE_terseLabel_en-US" xlink:label="lab_wab_ContractWithCustomerAssetIncreaseDecreaseForeignCurrencyTranslationAdjustment_C2E5B027D33AE1229DC07536A68B63BE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Foreign currency impact</link:label>
    <link:label id="lab_wab_ContractWithCustomerAssetIncreaseDecreaseForeignCurrencyTranslationAdjustment_C2E5B027D33AE1229DC07536A68B63BE_label_en-US" xlink:label="lab_wab_ContractWithCustomerAssetIncreaseDecreaseForeignCurrencyTranslationAdjustment_C2E5B027D33AE1229DC07536A68B63BE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Contract With Customer Asset Increase (Decrease) Foreign Currency Translation Adjustment</link:label>
    <link:label id="lab_wab_ContractWithCustomerAssetIncreaseDecreaseForeignCurrencyTranslationAdjustment_C2E5B027D33AE1229DC07536A68B63BE_documentation_en-US" xlink:label="lab_wab_ContractWithCustomerAssetIncreaseDecreaseForeignCurrencyTranslationAdjustment_C2E5B027D33AE1229DC07536A68B63BE" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Contract With Customer Asset Increase (Decrease) Foreign Currency Translation Adjustment</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_ContractWithCustomerAssetIncreaseDecreaseForeignCurrencyTranslationAdjustment" xlink:label="loc_wab_ContractWithCustomerAssetIncreaseDecreaseForeignCurrencyTranslationAdjustment_C2E5B027D33AE1229DC07536A68B63BE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_ContractWithCustomerAssetIncreaseDecreaseForeignCurrencyTranslationAdjustment_C2E5B027D33AE1229DC07536A68B63BE" xlink:to="lab_wab_ContractWithCustomerAssetIncreaseDecreaseForeignCurrencyTranslationAdjustment_C2E5B027D33AE1229DC07536A68B63BE" xlink:type="arc" />
    <link:label id="lab_us-gaap_ContractWithCustomerAssetNet_2EC1426F20367AEAFDBA7536A68B8165_periodEndLabel_en-US" xlink:label="lab_us-gaap_ContractWithCustomerAssetNet_2EC1426F20367AEAFDBA7536A68B8165" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Balance at end of period</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ContractWithCustomerAssetNet" xlink:label="loc_us-gaap_ContractWithCustomerAssetNet_2EC1426F20367AEAFDBA7536A68B8165" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ContractWithCustomerAssetNet_2EC1426F20367AEAFDBA7536A68B8165" xlink:to="lab_us-gaap_ContractWithCustomerAssetNet_2EC1426F20367AEAFDBA7536A68B8165" xlink:type="arc" />
    <link:label id="lab_wab_ChangeinContractwithCustomerLiabilityRollForward_930A1F25447DA7125F7B7536A68BD294_terseLabel_en-US" xlink:label="lab_wab_ChangeinContractwithCustomerLiabilityRollForward_930A1F25447DA7125F7B7536A68BD294" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Contract Liabilities</link:label>
    <link:label id="lab_wab_ChangeinContractwithCustomerLiabilityRollForward_930A1F25447DA7125F7B7536A68BD294_label_en-US" xlink:label="lab_wab_ChangeinContractwithCustomerLiabilityRollForward_930A1F25447DA7125F7B7536A68BD294" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Change in Contract with Customer Liability [Roll Forward]</link:label>
    <link:label id="lab_wab_ChangeinContractwithCustomerLiabilityRollForward_930A1F25447DA7125F7B7536A68BD294_documentation_en-US" xlink:label="lab_wab_ChangeinContractwithCustomerLiabilityRollForward_930A1F25447DA7125F7B7536A68BD294" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Change in Contract with Customer Liability [Roll Forward]</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_ChangeinContractwithCustomerLiabilityRollForward" xlink:label="loc_wab_ChangeinContractwithCustomerLiabilityRollForward_930A1F25447DA7125F7B7536A68BD294" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_ChangeinContractwithCustomerLiabilityRollForward_930A1F25447DA7125F7B7536A68BD294" xlink:to="lab_wab_ChangeinContractwithCustomerLiabilityRollForward_930A1F25447DA7125F7B7536A68BD294" xlink:type="arc" />
    <link:label id="lab_us-gaap_ContractWithCustomerLiability_44AE975A6046908C609D7536A68BD270_periodStartLabel_en-US" xlink:label="lab_us-gaap_ContractWithCustomerLiability_44AE975A6046908C609D7536A68BD270" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Balance at beginning of year</link:label>
    <link:label id="lab_us-gaap_ContractWithCustomerLiability_44AE975A6046908C609D7536A68BD270_label_en-US" xlink:label="lab_us-gaap_ContractWithCustomerLiability_44AE975A6046908C609D7536A68BD270" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Contract with Customer, Liability</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ContractWithCustomerLiability" xlink:label="loc_us-gaap_ContractWithCustomerLiability_44AE975A6046908C609D7536A68BD270" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ContractWithCustomerLiability_44AE975A6046908C609D7536A68BD270" xlink:to="lab_us-gaap_ContractWithCustomerLiability_44AE975A6046908C609D7536A68BD270" xlink:type="arc" />
    <link:label id="lab_us-gaap_ContractWithCustomerLiabilityIncreaseDecreaseForContractAcquiredInBusinessCombination_3C06560CDCAF37191313757D4E1FF9BE_terseLabel_en-US" xlink:label="lab_us-gaap_ContractWithCustomerLiabilityIncreaseDecreaseForContractAcquiredInBusinessCombination_3C06560CDCAF37191313757D4E1FF9BE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Acquisitions</link:label>
    <link:label id="lab_us-gaap_ContractWithCustomerLiabilityIncreaseDecreaseForContractAcquiredInBusinessCombination_3C06560CDCAF37191313757D4E1FF9BE_label_en-US" xlink:label="lab_us-gaap_ContractWithCustomerLiabilityIncreaseDecreaseForContractAcquiredInBusinessCombination_3C06560CDCAF37191313757D4E1FF9BE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Contract with Customer, Liability, Increase (Decrease) for Contract Acquired in Business Combination</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ContractWithCustomerLiabilityIncreaseDecreaseForContractAcquiredInBusinessCombination" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityIncreaseDecreaseForContractAcquiredInBusinessCombination_3C06560CDCAF37191313757D4E1FF9BE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ContractWithCustomerLiabilityIncreaseDecreaseForContractAcquiredInBusinessCombination_3C06560CDCAF37191313757D4E1FF9BE" xlink:to="lab_us-gaap_ContractWithCustomerLiabilityIncreaseDecreaseForContractAcquiredInBusinessCombination_3C06560CDCAF37191313757D4E1FF9BE" xlink:type="arc" />
    <link:label id="lab_wab_ContractWithCustomerLiabilityNewContractAdditions_22E6CFD23A9ED7E3BA677536A68B507E_terseLabel_en-US" xlink:label="lab_wab_ContractWithCustomerLiabilityNewContractAdditions_22E6CFD23A9ED7E3BA677536A68B507E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Recognized in current year</link:label>
    <link:label id="lab_wab_ContractWithCustomerLiabilityNewContractAdditions_22E6CFD23A9ED7E3BA677536A68B507E_label_en-US" xlink:label="lab_wab_ContractWithCustomerLiabilityNewContractAdditions_22E6CFD23A9ED7E3BA677536A68B507E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Contract With Customer Liability New Contract Additions</link:label>
    <link:label id="lab_wab_ContractWithCustomerLiabilityNewContractAdditions_22E6CFD23A9ED7E3BA677536A68B507E_documentation_en-US" xlink:label="lab_wab_ContractWithCustomerLiabilityNewContractAdditions_22E6CFD23A9ED7E3BA677536A68B507E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Contract With Customer Liability New Contract Additions</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_ContractWithCustomerLiabilityNewContractAdditions" xlink:label="loc_wab_ContractWithCustomerLiabilityNewContractAdditions_22E6CFD23A9ED7E3BA677536A68B507E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_ContractWithCustomerLiabilityNewContractAdditions_22E6CFD23A9ED7E3BA677536A68B507E" xlink:to="lab_wab_ContractWithCustomerLiabilityNewContractAdditions_22E6CFD23A9ED7E3BA677536A68B507E" xlink:type="arc" />
    <link:label id="lab_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_63BC185FB81DF274ED467536A68B5C5F_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_63BC185FB81DF274ED467536A68B5C5F" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Amounts in beginning balance reclassified to revenue</link:label>
    <link:label id="lab_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_63BC185FB81DF274ED467536A68B5C5F_label_en-US" xlink:label="lab_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_63BC185FB81DF274ED467536A68B5C5F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Contract with Customer, Liability, Revenue Recognized</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ContractWithCustomerLiabilityRevenueRecognized" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_63BC185FB81DF274ED467536A68B5C5F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_63BC185FB81DF274ED467536A68B5C5F" xlink:to="lab_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_63BC185FB81DF274ED467536A68B5C5F" xlink:type="arc" />
    <link:label id="lab_wab_ContractwithCustomerLiabilityRevenueRecognizedfromCurrentYearAdditions_ED6638E65F72F7C2B7917536A68B4D5D_negatedTerseLabel_en-US" xlink:label="lab_wab_ContractwithCustomerLiabilityRevenueRecognizedfromCurrentYearAdditions_ED6638E65F72F7C2B7917536A68B4D5D" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Current year amounts reclassified to revenue</link:label>
    <link:label id="lab_wab_ContractwithCustomerLiabilityRevenueRecognizedfromCurrentYearAdditions_ED6638E65F72F7C2B7917536A68B4D5D_label_en-US" xlink:label="lab_wab_ContractwithCustomerLiabilityRevenueRecognizedfromCurrentYearAdditions_ED6638E65F72F7C2B7917536A68B4D5D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Contract with Customer Liability Revenue Recognized from Current Year Additions</link:label>
    <link:label id="lab_wab_ContractwithCustomerLiabilityRevenueRecognizedfromCurrentYearAdditions_ED6638E65F72F7C2B7917536A68B4D5D_documentation_en-US" xlink:label="lab_wab_ContractwithCustomerLiabilityRevenueRecognizedfromCurrentYearAdditions_ED6638E65F72F7C2B7917536A68B4D5D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Contract with Customer Liability Revenue Recognized from Current Year Additions</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_ContractwithCustomerLiabilityRevenueRecognizedfromCurrentYearAdditions" xlink:label="loc_wab_ContractwithCustomerLiabilityRevenueRecognizedfromCurrentYearAdditions_ED6638E65F72F7C2B7917536A68B4D5D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_ContractwithCustomerLiabilityRevenueRecognizedfromCurrentYearAdditions_ED6638E65F72F7C2B7917536A68B4D5D" xlink:to="lab_wab_ContractwithCustomerLiabilityRevenueRecognizedfromCurrentYearAdditions_ED6638E65F72F7C2B7917536A68B4D5D" xlink:type="arc" />
    <link:label id="lab_wab_ContractwithCustomerLiabilityIncreaseDecreaseForeignCurrencyTranslationAdjustment_8F3DA46B192CF3D664E57536A68B040E_terseLabel_en-US" xlink:label="lab_wab_ContractwithCustomerLiabilityIncreaseDecreaseForeignCurrencyTranslationAdjustment_8F3DA46B192CF3D664E57536A68B040E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Foreign currency impact</link:label>
    <link:label id="lab_wab_ContractwithCustomerLiabilityIncreaseDecreaseForeignCurrencyTranslationAdjustment_8F3DA46B192CF3D664E57536A68B040E_label_en-US" xlink:label="lab_wab_ContractwithCustomerLiabilityIncreaseDecreaseForeignCurrencyTranslationAdjustment_8F3DA46B192CF3D664E57536A68B040E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Contract with Customer Liability Increase (Decrease) Foreign Currency Translation Adjustment</link:label>
    <link:label id="lab_wab_ContractwithCustomerLiabilityIncreaseDecreaseForeignCurrencyTranslationAdjustment_8F3DA46B192CF3D664E57536A68B040E_documentation_en-US" xlink:label="lab_wab_ContractwithCustomerLiabilityIncreaseDecreaseForeignCurrencyTranslationAdjustment_8F3DA46B192CF3D664E57536A68B040E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Contract with Customer Liability Increase (Decrease) Foreign Currency Translation Adjustment</link:label>
    <link:loc xlink:href="wab-20190331.xsd#wab_ContractwithCustomerLiabilityIncreaseDecreaseForeignCurrencyTranslationAdjustment" xlink:label="loc_wab_ContractwithCustomerLiabilityIncreaseDecreaseForeignCurrencyTranslationAdjustment_8F3DA46B192CF3D664E57536A68B040E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_ContractwithCustomerLiabilityIncreaseDecreaseForeignCurrencyTranslationAdjustment_8F3DA46B192CF3D664E57536A68B040E" xlink:to="lab_wab_ContractwithCustomerLiabilityIncreaseDecreaseForeignCurrencyTranslationAdjustment_8F3DA46B192CF3D664E57536A68B040E" xlink:type="arc" />
    <link:label id="lab_us-gaap_ContractWithCustomerLiability_F41679227E8B17417DF57536A68BD718_periodEndLabel_en-US" xlink:label="lab_us-gaap_ContractWithCustomerLiability_F41679227E8B17417DF57536A68BD718" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Balance at end of period</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ContractWithCustomerLiability" xlink:label="loc_us-gaap_ContractWithCustomerLiability_F41679227E8B17417DF57536A68BD718" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ContractWithCustomerLiability_F41679227E8B17417DF57536A68BD718" xlink:to="lab_us-gaap_ContractWithCustomerLiability_F41679227E8B17417DF57536A68BD718" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssets_C75CF2ED1044FB7DF8F594AD92D5295E_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssets_C75CF2ED1044FB7DF8F594AD92D5295E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Current assets</link:label>
    <link:label id="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssets_C75CF2ED1044FB7DF8F594AD92D5295E_label_en-US" xlink:label="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssets_C75CF2ED1044FB7DF8F594AD92D5295E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssets" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssets_C75CF2ED1044FB7DF8F594AD92D5295E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssets_C75CF2ED1044FB7DF8F594AD92D5295E" xlink:to="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssets_C75CF2ED1044FB7DF8F594AD92D5295E" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill_B25BBFCD868FE94B729994AD92D537EA_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill_B25BBFCD868FE94B729994AD92D537EA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other intangible assets</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill_B25BBFCD868FE94B729994AD92D537EA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill_B25BBFCD868FE94B729994AD92D537EA" xlink:to="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill_B25BBFCD868FE94B729994AD92D537EA" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_19FEA3EEE2CCE6111E6294AD92D660DC_negatedLabel_en-US" xlink:label="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_19FEA3EEE2CCE6111E6294AD92D660DC" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Total liabilities assumed</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_19FEA3EEE2CCE6111E6294AD92D660DC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_19FEA3EEE2CCE6111E6294AD92D660DC" xlink:to="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_19FEA3EEE2CCE6111E6294AD92D660DC" xlink:type="arc" />
    <link:label id="lab_us-gaap_CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock_1BAAC1ADEF65446E5DEAC56747B39D7F_terseLabel_en-US" xlink:label="lab_us-gaap_CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock_1BAAC1ADEF65446E5DEAC56747B39D7F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Guarantor Subsidiaries Financial Information</link:label>
    <link:label id="lab_us-gaap_CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock_1BAAC1ADEF65446E5DEAC56747B39D7F_label_en-US" xlink:label="lab_us-gaap_CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock_1BAAC1ADEF65446E5DEAC56747B39D7F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Condensed Financial Information of Parent Company Only Disclosure [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock" xlink:label="loc_us-gaap_CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock_1BAAC1ADEF65446E5DEAC56747B39D7F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock_1BAAC1ADEF65446E5DEAC56747B39D7F" xlink:to="lab_us-gaap_CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock_1BAAC1ADEF65446E5DEAC56747B39D7F" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncomeTaxDisclosureTextBlock_FDDEDA1ADADFEA63B67BC56747650B19_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxDisclosureTextBlock_FDDEDA1ADADFEA63B67BC56747650B19" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Income Taxes</link:label>
    <link:label id="lab_us-gaap_IncomeTaxDisclosureTextBlock_FDDEDA1ADADFEA63B67BC56747650B19_label_en-US" xlink:label="lab_us-gaap_IncomeTaxDisclosureTextBlock_FDDEDA1ADADFEA63B67BC56747650B19" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Tax Disclosure [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxDisclosureTextBlock" xlink:label="loc_us-gaap_IncomeTaxDisclosureTextBlock_FDDEDA1ADADFEA63B67BC56747650B19" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeTaxDisclosureTextBlock_FDDEDA1ADADFEA63B67BC56747650B19" xlink:to="lab_us-gaap_IncomeTaxDisclosureTextBlock_FDDEDA1ADADFEA63B67BC56747650B19" xlink:type="arc" />
  </link:labelLink>
</link:linkbase>
