<?xml version="1.0" encoding="US-ASCII"?>
<!--XBRL Document Created with Wdesk from Workiva, formerly WebFilings-->
<!-- -->
<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_RisksAndUncertaintiesAbstract_1152E034A69CEEC25D8B700C4608C94A_label_en-US" xlink:label="lab_us-gaap_RisksAndUncertaintiesAbstract_1152E034A69CEEC25D8B700C4608C94A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Risks and Uncertainties [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RisksAndUncertaintiesAbstract" xlink:label="loc_us-gaap_RisksAndUncertaintiesAbstract_1152E034A69CEEC25D8B700C4608C94A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RisksAndUncertaintiesAbstract_1152E034A69CEEC25D8B700C4608C94A" xlink:to="lab_us-gaap_RisksAndUncertaintiesAbstract_1152E034A69CEEC25D8B700C4608C94A" xlink:type="arc" />
    <link:label id="lab_us-gaap_ConcentrationRiskDisclosureTextBlock_F8172995B3746F1AFA40700C4608D00F_verboseLabel_en-US" xlink:label="lab_us-gaap_ConcentrationRiskDisclosureTextBlock_F8172995B3746F1AFA40700C4608D00F" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Concentration of Credit Risk</link:label>
    <link:label id="lab_us-gaap_ConcentrationRiskDisclosureTextBlock_F8172995B3746F1AFA40700C4608D00F_label_en-US" xlink:label="lab_us-gaap_ConcentrationRiskDisclosureTextBlock_F8172995B3746F1AFA40700C4608D00F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Concentration Risk Disclosure [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ConcentrationRiskDisclosureTextBlock" xlink:label="loc_us-gaap_ConcentrationRiskDisclosureTextBlock_F8172995B3746F1AFA40700C4608D00F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConcentrationRiskDisclosureTextBlock_F8172995B3746F1AFA40700C4608D00F" xlink:to="lab_us-gaap_ConcentrationRiskDisclosureTextBlock_F8172995B3746F1AFA40700C4608D00F" xlink:type="arc" />
    <link:label id="lab_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_43F553F392C3A9159C9B700C4647EE91_label_en-US" xlink:label="lab_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_43F553F392C3A9159C9B700C4647EE91" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract" xlink:label="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_43F553F392C3A9159C9B700C4647EE91" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_43F553F392C3A9159C9B700C4647EE91" xlink:to="lab_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_43F553F392C3A9159C9B700C4647EE91" xlink:type="arc" />
    <link:label id="lab_us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock_D7653FFC0023EB9A01A8700C4647E716_verboseLabel_en-US" xlink:label="lab_us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock_D7653FFC0023EB9A01A8700C4647E716" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Goodwill and Intangible Assets</link:label>
    <link:label id="lab_us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock_D7653FFC0023EB9A01A8700C4647E716_label_en-US" xlink:label="lab_us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock_D7653FFC0023EB9A01A8700C4647E716" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock" xlink:label="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock_D7653FFC0023EB9A01A8700C4647E716" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock_D7653FFC0023EB9A01A8700C4647E716" xlink:to="lab_us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock_D7653FFC0023EB9A01A8700C4647E716" xlink:type="arc" />
    <link:label id="lab_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_DE0D2D8075D7BADDF947700C46180F75_label_en-US" xlink:label="lab_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_DE0D2D8075D7BADDF947700C46180F75" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract" xlink:label="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_DE0D2D8075D7BADDF947700C46180F75" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_DE0D2D8075D7BADDF947700C46180F75" xlink:to="lab_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_DE0D2D8075D7BADDF947700C46180F75" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensation_9AFD7971DEC4D51FCC27700C4618797E_verboseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensation_9AFD7971DEC4D51FCC27700C4618797E" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Stock-based compensation</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensation_9AFD7971DEC4D51FCC27700C4618797E_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensation_9AFD7971DEC4D51FCC27700C4618797E" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensation" xlink:label="loc_us-gaap_ShareBasedCompensation_9AFD7971DEC4D51FCC27700C4618797E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensation_9AFD7971DEC4D51FCC27700C4618797E" xlink:to="lab_us-gaap_ShareBasedCompensation_9AFD7971DEC4D51FCC27700C4618797E" xlink:type="arc" />
    <link:label id="lab_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense_7B32529A41F2976E3F75700C461813DC_terseLabel_en-US" xlink:label="lab_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense_7B32529A41F2976E3F75700C461813DC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Tax benefit recognized in the statement of operations</link:label>
    <link:label id="lab_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense_7B32529A41F2976E3F75700C461813DC_label_en-US" xlink:label="lab_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense_7B32529A41F2976E3F75700C461813DC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Employee Service Share-based Compensation, Tax Benefit from Compensation Expense</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense_7B32529A41F2976E3F75700C461813DC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense_7B32529A41F2976E3F75700C461813DC" xlink:to="lab_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense_7B32529A41F2976E3F75700C461813DC" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_C3E75CE957D03AD73C83700C47121D4F_label_en-US" xlink:label="lab_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_C3E75CE957D03AD73C83700C47121D4F" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:label="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_C3E75CE957D03AD73C83700C47121D4F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_C3E75CE957D03AD73C83700C47121D4F" xlink:to="lab_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_C3E75CE957D03AD73C83700C47121D4F" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_84EE8DD32A1BD9F20056700C471228AC_verboseLabel_en-US" xlink:label="lab_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_84EE8DD32A1BD9F20056700C471228AC" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Commitments and Contingencies</link:label>
    <link:label id="lab_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_84EE8DD32A1BD9F20056700C471228AC_label_en-US" xlink:label="lab_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_84EE8DD32A1BD9F20056700C471228AC" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureTextBlock" xlink:label="loc_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_84EE8DD32A1BD9F20056700C471228AC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_84EE8DD32A1BD9F20056700C471228AC" xlink:to="lab_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_84EE8DD32A1BD9F20056700C471228AC" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherIncomeAndExpensesAbstract_1D3F62BD8D4776E7191B700C4637842B_label_en-US" xlink:label="lab_us-gaap_OtherIncomeAndExpensesAbstract_1D3F62BD8D4776E7191B700C4637842B" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherIncomeAndExpensesAbstract" xlink:label="loc_us-gaap_OtherIncomeAndExpensesAbstract_1D3F62BD8D4776E7191B700C4637842B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherIncomeAndExpensesAbstract_1D3F62BD8D4776E7191B700C4637842B" xlink:to="lab_us-gaap_OtherIncomeAndExpensesAbstract_1D3F62BD8D4776E7191B700C4637842B" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherIncomeAndOtherExpenseDisclosureTextBlock_9D2ECBB004FC8F5D3270700C4637AC32_verboseLabel_en-US" xlink:label="lab_us-gaap_OtherIncomeAndOtherExpenseDisclosureTextBlock_9D2ECBB004FC8F5D3270700C4637AC32" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Other Income, Net</link:label>
    <link:label id="lab_us-gaap_OtherIncomeAndOtherExpenseDisclosureTextBlock_9D2ECBB004FC8F5D3270700C4637AC32_label_en-US" xlink:label="lab_us-gaap_OtherIncomeAndOtherExpenseDisclosureTextBlock_9D2ECBB004FC8F5D3270700C4637AC32" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherIncomeAndOtherExpenseDisclosureTextBlock" xlink:label="loc_us-gaap_OtherIncomeAndOtherExpenseDisclosureTextBlock_9D2ECBB004FC8F5D3270700C4637AC32" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherIncomeAndOtherExpenseDisclosureTextBlock_9D2ECBB004FC8F5D3270700C4637AC32" xlink:to="lab_us-gaap_OtherIncomeAndOtherExpenseDisclosureTextBlock_9D2ECBB004FC8F5D3270700C4637AC32" xlink:type="arc" />
    <link:label id="lab_us-gaap_EarningsPerShareAbstract_E90BBC80964D327E7092700C46C476BD_label_en-US" xlink:label="lab_us-gaap_EarningsPerShareAbstract_E90BBC80964D327E7092700C46C476BD" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_EarningsPerShareAbstract" xlink:label="loc_us-gaap_EarningsPerShareAbstract_E90BBC80964D327E7092700C46C476BD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EarningsPerShareAbstract_E90BBC80964D327E7092700C46C476BD" xlink:to="lab_us-gaap_EarningsPerShareAbstract_E90BBC80964D327E7092700C46C476BD" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_FC3649C47E9D6EC8B917700C46C46BEB_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_FC3649C47E9D6EC8B917700C46C46BEB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Earnings Per Share Reconciliation</link:label>
    <link:label id="lab_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_FC3649C47E9D6EC8B917700C46C46BEB_label_en-US" xlink:label="lab_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_FC3649C47E9D6EC8B917700C46C46BEB" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_FC3649C47E9D6EC8B917700C46C46BEB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_FC3649C47E9D6EC8B917700C46C46BEB" xlink:to="lab_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_FC3649C47E9D6EC8B917700C46C46BEB" xlink:type="arc" />
    <link:label id="lab_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_9F7CB2B812D4305E7189690C638AE1C7_label_en-US" xlink:label="lab_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_9F7CB2B812D4305E7189690C638AE1C7" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract" xlink:label="loc_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_9F7CB2B812D4305E7189690C638AE1C7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_9F7CB2B812D4305E7189690C638AE1C7" xlink:to="lab_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_9F7CB2B812D4305E7189690C638AE1C7" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetIncomeLoss_9001EDF7700E5C43C507690C638A88CC_terseLabel_en-US" xlink:label="lab_us-gaap_NetIncomeLoss_9001EDF7700E5C43C507690C638A88CC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net income</link:label>
    <link:label id="lab_us-gaap_NetIncomeLoss_9001EDF7700E5C43C507690C638A88CC_label_en-US" xlink:label="lab_us-gaap_NetIncomeLoss_9001EDF7700E5C43C507690C638A88CC" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_9001EDF7700E5C43C507690C638A88CC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetIncomeLoss_9001EDF7700E5C43C507690C638A88CC" xlink:to="lab_us-gaap_NetIncomeLoss_9001EDF7700E5C43C507690C638A88CC" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent_C1D4BA168E1AED062F83690C638A5999_terseLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent_C1D4BA168E1AED062F83690C638A5999" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Foreign currency translation gains (losses), net of tax</link:label>
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent_C1D4BA168E1AED062F83690C638A5999_label_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent_C1D4BA168E1AED062F83690C638A5999" 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, Net of Tax, Portion Attributable to Parent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent" xlink:label="loc_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent_C1D4BA168E1AED062F83690C638A5999" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent_C1D4BA168E1AED062F83690C638A5999" xlink:to="lab_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent_C1D4BA168E1AED062F83690C638A5999" xlink:type="arc" />
    <link:label id="lab_us-gaap_ComprehensiveIncomeNetOfTax_C5B2344ED7EEF6A39639690C638A2094_totalLabel_en-US" xlink:label="lab_us-gaap_ComprehensiveIncomeNetOfTax_C5B2344ED7EEF6A39639690C638A2094" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Comprehensive income</link:label>
    <link:label id="lab_us-gaap_ComprehensiveIncomeNetOfTax_C5B2344ED7EEF6A39639690C638A2094_label_en-US" xlink:label="lab_us-gaap_ComprehensiveIncomeNetOfTax_C5B2344ED7EEF6A39639690C638A2094" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTax" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_C5B2344ED7EEF6A39639690C638A2094" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_C5B2344ED7EEF6A39639690C638A2094" xlink:to="lab_us-gaap_ComprehensiveIncomeNetOfTax_C5B2344ED7EEF6A39639690C638A2094" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfGoodwillTextBlock_0455998D687383A0BF4C700C466614E7_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfGoodwillTextBlock_0455998D687383A0BF4C700C466614E7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Goodwill</link:label>
    <link:label id="lab_us-gaap_ScheduleOfGoodwillTextBlock_0455998D687383A0BF4C700C466614E7_label_en-US" xlink:label="lab_us-gaap_ScheduleOfGoodwillTextBlock_0455998D687383A0BF4C700C466614E7" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ScheduleOfGoodwillTextBlock" xlink:label="loc_us-gaap_ScheduleOfGoodwillTextBlock_0455998D687383A0BF4C700C466614E7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfGoodwillTextBlock_0455998D687383A0BF4C700C466614E7" xlink:to="lab_us-gaap_ScheduleOfGoodwillTextBlock_0455998D687383A0BF4C700C466614E7" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock_F80572144DCBCEC2A124700C46664ECD_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock_F80572144DCBCEC2A124700C46664ECD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Intangible Assets</link:label>
    <link:label id="lab_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock_F80572144DCBCEC2A124700C46664ECD_label_en-US" xlink:label="lab_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock_F80572144DCBCEC2A124700C46664ECD" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock_F80572144DCBCEC2A124700C46664ECD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock_F80572144DCBCEC2A124700C46664ECD" xlink:to="lab_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock_F80572144DCBCEC2A124700C46664ECD" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock_13059D4ED30D8CE1B9EC700C4666EDB4_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock_13059D4ED30D8CE1B9EC700C4666EDB4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Future Amortization Expense</link:label>
    <link:label id="lab_us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock_13059D4ED30D8CE1B9EC700C4666EDB4_label_en-US" xlink:label="lab_us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock_13059D4ED30D8CE1B9EC700C4666EDB4" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock" xlink:label="loc_us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock_13059D4ED30D8CE1B9EC700C4666EDB4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock_13059D4ED30D8CE1B9EC700C4666EDB4" xlink:to="lab_us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock_13059D4ED30D8CE1B9EC700C4666EDB4" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtDisclosureAbstract_5ECA095E161FAE3047F0700C460867B0_label_en-US" xlink:label="lab_us-gaap_DebtDisclosureAbstract_5ECA095E161FAE3047F0700C460867B0" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DebtDisclosureAbstract" xlink:label="loc_us-gaap_DebtDisclosureAbstract_5ECA095E161FAE3047F0700C460867B0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtDisclosureAbstract_5ECA095E161FAE3047F0700C460867B0" xlink:to="lab_us-gaap_DebtDisclosureAbstract_5ECA095E161FAE3047F0700C460867B0" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtDisclosureTextBlock_7C52699C4466A8B7947F700C4608E9FC_verboseLabel_en-US" xlink:label="lab_us-gaap_DebtDisclosureTextBlock_7C52699C4466A8B7947F700C4608E9FC" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Debt</link:label>
    <link:label id="lab_us-gaap_DebtDisclosureTextBlock_7C52699C4466A8B7947F700C4608E9FC_label_en-US" xlink:label="lab_us-gaap_DebtDisclosureTextBlock_7C52699C4466A8B7947F700C4608E9FC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Disclosure [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DebtDisclosureTextBlock" xlink:label="loc_us-gaap_DebtDisclosureTextBlock_7C52699C4466A8B7947F700C4608E9FC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtDisclosureTextBlock_7C52699C4466A8B7947F700C4608E9FC" xlink:to="lab_us-gaap_DebtDisclosureTextBlock_7C52699C4466A8B7947F700C4608E9FC" xlink:type="arc" />
    <link:label id="lab_dy_ScheduleOfFiniteLivedAndIndefiniteLivedIntangibleAssetsTable_6DC80D3A77E80416B9ED71AFD6050AFA_terseLabel_en-US" xlink:label="lab_dy_ScheduleOfFiniteLivedAndIndefiniteLivedIntangibleAssetsTable_6DC80D3A77E80416B9ED71AFD6050AFA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Finite-Lived and Indefinite-Lived Intangible Assets [Table]</link:label>
    <link:label id="lab_dy_ScheduleOfFiniteLivedAndIndefiniteLivedIntangibleAssetsTable_6DC80D3A77E80416B9ED71AFD6050AFA_label_en-US" xlink:label="lab_dy_ScheduleOfFiniteLivedAndIndefiniteLivedIntangibleAssetsTable_6DC80D3A77E80416B9ED71AFD6050AFA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Finite-Lived and Indefinite-Lived Intangible Assets [Table]</link:label>
    <link:label id="lab_dy_ScheduleOfFiniteLivedAndIndefiniteLivedIntangibleAssetsTable_6DC80D3A77E80416B9ED71AFD6050AFA_documentation_en-US" xlink:label="lab_dy_ScheduleOfFiniteLivedAndIndefiniteLivedIntangibleAssetsTable_6DC80D3A77E80416B9ED71AFD6050AFA" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Schedule of Finite-Lived and Indefinite-Lived Intangible Assets [Table]</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_ScheduleOfFiniteLivedAndIndefiniteLivedIntangibleAssetsTable" xlink:label="loc_dy_ScheduleOfFiniteLivedAndIndefiniteLivedIntangibleAssetsTable_6DC80D3A77E80416B9ED71AFD6050AFA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_ScheduleOfFiniteLivedAndIndefiniteLivedIntangibleAssetsTable_6DC80D3A77E80416B9ED71AFD6050AFA" xlink:to="lab_dy_ScheduleOfFiniteLivedAndIndefiniteLivedIntangibleAssetsTable_6DC80D3A77E80416B9ED71AFD6050AFA" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_10013F787DB2A4DD279B71AFD605D828_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_10013F787DB2A4DD279B71AFD605D828" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets by Major Class [Axis]</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_10013F787DB2A4DD279B71AFD605D828_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_10013F787DB2A4DD279B71AFD605D828" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_10013F787DB2A4DD279B71AFD605D828" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_10013F787DB2A4DD279B71AFD605D828" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_10013F787DB2A4DD279B71AFD605D828" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_8983C3A185E6180FA34871AFD60526F7_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_8983C3A185E6180FA34871AFD60526F7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Major Class Name [Domain]</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_8983C3A185E6180FA34871AFD60526F7_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_8983C3A185E6180FA34871AFD60526F7" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_8983C3A185E6180FA34871AFD60526F7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_8983C3A185E6180FA34871AFD60526F7" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_8983C3A185E6180FA34871AFD60526F7" xlink:type="arc" />
    <link:label id="lab_us-gaap_CustomerRelationshipsMember_83E539A7E3198928CD7D71AFD605B718_terseLabel_en-US" xlink:label="lab_us-gaap_CustomerRelationshipsMember_83E539A7E3198928CD7D71AFD605B718" 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_83E539A7E3198928CD7D71AFD605B718_label_en-US" xlink:label="lab_us-gaap_CustomerRelationshipsMember_83E539A7E3198928CD7D71AFD605B718" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CustomerRelationshipsMember" xlink:label="loc_us-gaap_CustomerRelationshipsMember_83E539A7E3198928CD7D71AFD605B718" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CustomerRelationshipsMember_83E539A7E3198928CD7D71AFD605B718" xlink:to="lab_us-gaap_CustomerRelationshipsMember_83E539A7E3198928CD7D71AFD605B718" xlink:type="arc" />
    <link:label id="lab_us-gaap_OrderOrProductionBacklogMember_C0E5595116CE9F5C3F1771AFD606C6F2_terseLabel_en-US" xlink:label="lab_us-gaap_OrderOrProductionBacklogMember_C0E5595116CE9F5C3F1771AFD606C6F2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Contract backlog</link:label>
    <link:label id="lab_us-gaap_OrderOrProductionBacklogMember_C0E5595116CE9F5C3F1771AFD606C6F2_label_en-US" xlink:label="lab_us-gaap_OrderOrProductionBacklogMember_C0E5595116CE9F5C3F1771AFD606C6F2" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OrderOrProductionBacklogMember" xlink:label="loc_us-gaap_OrderOrProductionBacklogMember_C0E5595116CE9F5C3F1771AFD606C6F2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OrderOrProductionBacklogMember_C0E5595116CE9F5C3F1771AFD606C6F2" xlink:to="lab_us-gaap_OrderOrProductionBacklogMember_C0E5595116CE9F5C3F1771AFD606C6F2" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessAcquisitionAxis_BE6E03BAFAEC7E9C0BC171AFD606BE74_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionAxis_BE6E03BAFAEC7E9C0BC171AFD606BE74" 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_BE6E03BAFAEC7E9C0BC171AFD606BE74_label_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionAxis_BE6E03BAFAEC7E9C0BC171AFD606BE74" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_BE6E03BAFAEC7E9C0BC171AFD606BE74" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_BE6E03BAFAEC7E9C0BC171AFD606BE74" xlink:to="lab_us-gaap_BusinessAcquisitionAxis_BE6E03BAFAEC7E9C0BC171AFD606BE74" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessAcquisitionAcquireeDomain_3CFE8441F31B3560A15571AFD606F123_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionAcquireeDomain_3CFE8441F31B3560A15571AFD606F123" 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_3CFE8441F31B3560A15571AFD606F123_label_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionAcquireeDomain_3CFE8441F31B3560A15571AFD606F123" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_3CFE8441F31B3560A15571AFD606F123" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_3CFE8441F31B3560A15571AFD606F123" xlink:to="lab_us-gaap_BusinessAcquisitionAcquireeDomain_3CFE8441F31B3560A15571AFD606F123" xlink:type="arc" />
    <link:label id="lab_dy_BusinessesAcquiredinFiscal2013Member_B756DE8CB9789884171871AFD6064049_terseLabel_en-US" xlink:label="lab_dy_BusinessesAcquiredinFiscal2013Member_B756DE8CB9789884171871AFD6064049" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Businesses Acquired in Fiscal 2013</link:label>
    <link:label id="lab_dy_BusinessesAcquiredinFiscal2013Member_B756DE8CB9789884171871AFD6064049_label_en-US" xlink:label="lab_dy_BusinessesAcquiredinFiscal2013Member_B756DE8CB9789884171871AFD6064049" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Businesses Acquired in Fiscal 2013 [Member]</link:label>
    <link:label id="lab_dy_BusinessesAcquiredinFiscal2013Member_B756DE8CB9789884171871AFD6064049_documentation_en-US" xlink:label="lab_dy_BusinessesAcquiredinFiscal2013Member_B756DE8CB9789884171871AFD6064049" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Includes subsidiaries a acquired on December 2, 2012 from Quanta Services, Inc. and businesses acquired during the fourth quarter of fiscal 2013.</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_BusinessesAcquiredinFiscal2013Member" xlink:label="loc_dy_BusinessesAcquiredinFiscal2013Member_B756DE8CB9789884171871AFD6064049" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_BusinessesAcquiredinFiscal2013Member_B756DE8CB9789884171871AFD6064049" xlink:to="lab_dy_BusinessesAcquiredinFiscal2013Member_B756DE8CB9789884171871AFD6064049" xlink:type="arc" />
    <link:label id="lab_dy_BusinessOneAcquiredinFiscal2013Member_E73E18F0A52C5B4FA06171AFD606B716_terseLabel_en-US" xlink:label="lab_dy_BusinessOneAcquiredinFiscal2013Member_E73E18F0A52C5B4FA06171AFD606B716" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">First Reporting Unit Acquired in Fiscal 2013</link:label>
    <link:label id="lab_dy_BusinessOneAcquiredinFiscal2013Member_E73E18F0A52C5B4FA06171AFD606B716_label_en-US" xlink:label="lab_dy_BusinessOneAcquiredinFiscal2013Member_E73E18F0A52C5B4FA06171AFD606B716" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business One Acquired in Fiscal 2013 [Member]</link:label>
    <link:label id="lab_dy_BusinessOneAcquiredinFiscal2013Member_E73E18F0A52C5B4FA06171AFD606B716_documentation_en-US" xlink:label="lab_dy_BusinessOneAcquiredinFiscal2013Member_E73E18F0A52C5B4FA06171AFD606B716" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Business One Acquired in Fiscal 2013 [Member]</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_BusinessOneAcquiredinFiscal2013Member" xlink:label="loc_dy_BusinessOneAcquiredinFiscal2013Member_E73E18F0A52C5B4FA06171AFD606B716" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_BusinessOneAcquiredinFiscal2013Member_E73E18F0A52C5B4FA06171AFD606B716" xlink:to="lab_dy_BusinessOneAcquiredinFiscal2013Member_E73E18F0A52C5B4FA06171AFD606B716" xlink:type="arc" />
    <link:label id="lab_dy_BusinessTwoAcquiredinFiscal2013Member_329B5BF6DE286E222FF371AFD606FDF8_terseLabel_en-US" xlink:label="lab_dy_BusinessTwoAcquiredinFiscal2013Member_329B5BF6DE286E222FF371AFD606FDF8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Second Reporting Unit Acquired in Fiscal 2013</link:label>
    <link:label id="lab_dy_BusinessTwoAcquiredinFiscal2013Member_329B5BF6DE286E222FF371AFD606FDF8_label_en-US" xlink:label="lab_dy_BusinessTwoAcquiredinFiscal2013Member_329B5BF6DE286E222FF371AFD606FDF8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Two Acquired in Fiscal 2013 [Member]</link:label>
    <link:label id="lab_dy_BusinessTwoAcquiredinFiscal2013Member_329B5BF6DE286E222FF371AFD606FDF8_documentation_en-US" xlink:label="lab_dy_BusinessTwoAcquiredinFiscal2013Member_329B5BF6DE286E222FF371AFD606FDF8" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Business Two Acquired in Fiscal 2013 [Member]</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_BusinessTwoAcquiredinFiscal2013Member" xlink:label="loc_dy_BusinessTwoAcquiredinFiscal2013Member_329B5BF6DE286E222FF371AFD606FDF8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_BusinessTwoAcquiredinFiscal2013Member_329B5BF6DE286E222FF371AFD606FDF8" xlink:to="lab_dy_BusinessTwoAcquiredinFiscal2013Member_329B5BF6DE286E222FF371AFD606FDF8" xlink:type="arc" />
    <link:label id="lab_dy_BusinessThreeAcquiredinFiscal2013Member_A601A94A8D76B89F584371AFD6060F26_terseLabel_en-US" xlink:label="lab_dy_BusinessThreeAcquiredinFiscal2013Member_A601A94A8D76B89F584371AFD6060F26" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Third Reporting Unit Acquired in Fiscal 2013</link:label>
    <link:label id="lab_dy_BusinessThreeAcquiredinFiscal2013Member_A601A94A8D76B89F584371AFD6060F26_label_en-US" xlink:label="lab_dy_BusinessThreeAcquiredinFiscal2013Member_A601A94A8D76B89F584371AFD6060F26" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Three Acquired in Fiscal 2013 [Member]</link:label>
    <link:label id="lab_dy_BusinessThreeAcquiredinFiscal2013Member_A601A94A8D76B89F584371AFD6060F26_documentation_en-US" xlink:label="lab_dy_BusinessThreeAcquiredinFiscal2013Member_A601A94A8D76B89F584371AFD6060F26" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Business Three Acquired in Fiscal 2013 [Member]</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_BusinessThreeAcquiredinFiscal2013Member" xlink:label="loc_dy_BusinessThreeAcquiredinFiscal2013Member_A601A94A8D76B89F584371AFD6060F26" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_BusinessThreeAcquiredinFiscal2013Member_A601A94A8D76B89F584371AFD6060F26" xlink:to="lab_dy_BusinessThreeAcquiredinFiscal2013Member_A601A94A8D76B89F584371AFD6060F26" xlink:type="arc" />
    <link:label id="lab_dy_HewittPowerCommunicationsIncMember_5906B5B083312A36747A71AFD607EC57_terseLabel_en-US" xlink:label="lab_dy_HewittPowerCommunicationsIncMember_5906B5B083312A36747A71AFD607EC57" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Hewitt Power &amp; Communications, Inc</link:label>
    <link:label id="lab_dy_HewittPowerCommunicationsIncMember_5906B5B083312A36747A71AFD607EC57_label_en-US" xlink:label="lab_dy_HewittPowerCommunicationsIncMember_5906B5B083312A36747A71AFD607EC57" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Hewitt Power &amp; Communications, Inc [Member]</link:label>
    <link:label id="lab_dy_HewittPowerCommunicationsIncMember_5906B5B083312A36747A71AFD607EC57_documentation_en-US" xlink:label="lab_dy_HewittPowerCommunicationsIncMember_5906B5B083312A36747A71AFD607EC57" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Hewitt Power &amp; Communications, Inc [Member]</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_HewittPowerCommunicationsIncMember" xlink:label="loc_dy_HewittPowerCommunicationsIncMember_5906B5B083312A36747A71AFD607EC57" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_HewittPowerCommunicationsIncMember_5906B5B083312A36747A71AFD607EC57" xlink:to="lab_dy_HewittPowerCommunicationsIncMember_5906B5B083312A36747A71AFD607EC57" xlink:type="arc" />
    <link:label id="lab_us-gaap_RangeAxis_97D3934C32CC72F064FB71AFD607AE7B_terseLabel_en-US" xlink:label="lab_us-gaap_RangeAxis_97D3934C32CC72F064FB71AFD607AE7B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Range [Axis]</link:label>
    <link:label id="lab_us-gaap_RangeAxis_97D3934C32CC72F064FB71AFD607AE7B_label_en-US" xlink:label="lab_us-gaap_RangeAxis_97D3934C32CC72F064FB71AFD607AE7B" 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/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RangeAxis" xlink:label="loc_us-gaap_RangeAxis_97D3934C32CC72F064FB71AFD607AE7B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RangeAxis_97D3934C32CC72F064FB71AFD607AE7B" xlink:to="lab_us-gaap_RangeAxis_97D3934C32CC72F064FB71AFD607AE7B" xlink:type="arc" />
    <link:label id="lab_us-gaap_RangeMember_981677CB9A1983D074FF71AFD607009E_terseLabel_en-US" xlink:label="lab_us-gaap_RangeMember_981677CB9A1983D074FF71AFD607009E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Range [Domain]</link:label>
    <link:label id="lab_us-gaap_RangeMember_981677CB9A1983D074FF71AFD607009E_label_en-US" xlink:label="lab_us-gaap_RangeMember_981677CB9A1983D074FF71AFD607009E" 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/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RangeMember" xlink:label="loc_us-gaap_RangeMember_981677CB9A1983D074FF71AFD607009E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RangeMember_981677CB9A1983D074FF71AFD607009E" xlink:to="lab_us-gaap_RangeMember_981677CB9A1983D074FF71AFD607009E" xlink:type="arc" />
    <link:label id="lab_us-gaap_MinimumMember_FAA3E32573A0904C466E71AFD607D5EB_terseLabel_en-US" xlink:label="lab_us-gaap_MinimumMember_FAA3E32573A0904C466E71AFD607D5EB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Minimum</link:label>
    <link:label id="lab_us-gaap_MinimumMember_FAA3E32573A0904C466E71AFD607D5EB_label_en-US" xlink:label="lab_us-gaap_MinimumMember_FAA3E32573A0904C466E71AFD607D5EB" 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/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_MinimumMember" xlink:label="loc_us-gaap_MinimumMember_FAA3E32573A0904C466E71AFD607D5EB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_MinimumMember_FAA3E32573A0904C466E71AFD607D5EB" xlink:to="lab_us-gaap_MinimumMember_FAA3E32573A0904C466E71AFD607D5EB" xlink:type="arc" />
    <link:label id="lab_us-gaap_MaximumMember_D337A26E6910DBC4391671AFD607C3E2_terseLabel_en-US" xlink:label="lab_us-gaap_MaximumMember_D337A26E6910DBC4391671AFD607C3E2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Maximum</link:label>
    <link:label id="lab_us-gaap_MaximumMember_D337A26E6910DBC4391671AFD607C3E2_label_en-US" xlink:label="lab_us-gaap_MaximumMember_D337A26E6910DBC4391671AFD607C3E2" 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/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_MaximumMember" xlink:label="loc_us-gaap_MaximumMember_D337A26E6910DBC4391671AFD607C3E2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_MaximumMember_D337A26E6910DBC4391671AFD607C3E2" xlink:to="lab_us-gaap_MaximumMember_D337A26E6910DBC4391671AFD607C3E2" xlink:type="arc" />
    <link:label id="lab_us-gaap_FairValueByAssetClassAxis_51F3B34C27AB0493C84571AFD607FAE1_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueByAssetClassAxis_51F3B34C27AB0493C84571AFD607FAE1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Asset Class [Axis]</link:label>
    <link:label id="lab_us-gaap_FairValueByAssetClassAxis_51F3B34C27AB0493C84571AFD607FAE1_label_en-US" xlink:label="lab_us-gaap_FairValueByAssetClassAxis_51F3B34C27AB0493C84571AFD607FAE1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Asset Class [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FairValueByAssetClassAxis" xlink:label="loc_us-gaap_FairValueByAssetClassAxis_51F3B34C27AB0493C84571AFD607FAE1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueByAssetClassAxis_51F3B34C27AB0493C84571AFD607FAE1" xlink:to="lab_us-gaap_FairValueByAssetClassAxis_51F3B34C27AB0493C84571AFD607FAE1" xlink:type="arc" />
    <link:label id="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_B62652A691D8D1502A8571AFD6075C4A_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_B62652A691D8D1502A8571AFD6075C4A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Asset Class [Domain]</link:label>
    <link:label id="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_B62652A691D8D1502A8571AFD6075C4A_label_en-US" xlink:label="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_B62652A691D8D1502A8571AFD6075C4A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Asset Class [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_B62652A691D8D1502A8571AFD6075C4A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_B62652A691D8D1502A8571AFD6075C4A" xlink:to="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_B62652A691D8D1502A8571AFD6075C4A" xlink:type="arc" />
    <link:label id="lab_us-gaap_GoodwillMember_2CA7407A25AD9F69874571AFD607B7D5_terseLabel_en-US" xlink:label="lab_us-gaap_GoodwillMember_2CA7407A25AD9F69874571AFD607B7D5" 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_GoodwillMember_2CA7407A25AD9F69874571AFD607B7D5_label_en-US" xlink:label="lab_us-gaap_GoodwillMember_2CA7407A25AD9F69874571AFD607B7D5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_GoodwillMember" xlink:label="loc_us-gaap_GoodwillMember_2CA7407A25AD9F69874571AFD607B7D5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GoodwillMember_2CA7407A25AD9F69874571AFD607B7D5" xlink:to="lab_us-gaap_GoodwillMember_2CA7407A25AD9F69874571AFD607B7D5" xlink:type="arc" />
    <link:label id="lab_dy_FiniteLivedAndIndefiniteLivedIntangibleAssetsLineItems_35FC7D10D1E057ADD3C071AFD607D0AC_terseLabel_en-US" xlink:label="lab_dy_FiniteLivedAndIndefiniteLivedIntangibleAssetsLineItems_35FC7D10D1E057ADD3C071AFD607D0AC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]</link:label>
    <link:label id="lab_dy_FiniteLivedAndIndefiniteLivedIntangibleAssetsLineItems_35FC7D10D1E057ADD3C071AFD607D0AC_label_en-US" xlink:label="lab_dy_FiniteLivedAndIndefiniteLivedIntangibleAssetsLineItems_35FC7D10D1E057ADD3C071AFD607D0AC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]</link:label>
    <link:label id="lab_dy_FiniteLivedAndIndefiniteLivedIntangibleAssetsLineItems_35FC7D10D1E057ADD3C071AFD607D0AC_documentation_en-US" xlink:label="lab_dy_FiniteLivedAndIndefiniteLivedIntangibleAssetsLineItems_35FC7D10D1E057ADD3C071AFD607D0AC" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Finite-Lived and Indefinite-Lived Intangible Assets</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_FiniteLivedAndIndefiniteLivedIntangibleAssetsLineItems" xlink:label="loc_dy_FiniteLivedAndIndefiniteLivedIntangibleAssetsLineItems_35FC7D10D1E057ADD3C071AFD607D0AC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_FiniteLivedAndIndefiniteLivedIntangibleAssetsLineItems_35FC7D10D1E057ADD3C071AFD607D0AC" xlink:to="lab_dy_FiniteLivedAndIndefiniteLivedIntangibleAssetsLineItems_35FC7D10D1E057ADD3C071AFD607D0AC" xlink:type="arc" />
    <link:label id="lab_us-gaap_Goodwill_C50C72A7E1F83C17DE6871AFD607AA92_terseLabel_en-US" xlink:label="lab_us-gaap_Goodwill_C50C72A7E1F83C17DE6871AFD607AA92" 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_C50C72A7E1F83C17DE6871AFD607AA92_label_en-US" xlink:label="lab_us-gaap_Goodwill_C50C72A7E1F83C17DE6871AFD607AA92" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaap_Goodwill_C50C72A7E1F83C17DE6871AFD607AA92" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Goodwill_C50C72A7E1F83C17DE6871AFD607AA92" xlink:to="lab_us-gaap_Goodwill_C50C72A7E1F83C17DE6871AFD607AA92" xlink:type="arc" />
    <link:label id="lab_dy_FairValueAssumptionsQualitativeAssessmentsAssetPercent_2BAD3B56F9BAB6DE40C471AFD60860FE_terseLabel_en-US" xlink:label="lab_dy_FairValueAssumptionsQualitativeAssessmentsAssetPercent_2BAD3B56F9BAB6DE40C471AFD60860FE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Reporting units as a percent of consolidated goodwill balance</link:label>
    <link:label id="lab_dy_FairValueAssumptionsQualitativeAssessmentsAssetPercent_2BAD3B56F9BAB6DE40C471AFD60860FE_label_en-US" xlink:label="lab_dy_FairValueAssumptionsQualitativeAssessmentsAssetPercent_2BAD3B56F9BAB6DE40C471AFD60860FE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value Assumptions, Qualitative Assessments, Asset Percent</link:label>
    <link:label id="lab_dy_FairValueAssumptionsQualitativeAssessmentsAssetPercent_2BAD3B56F9BAB6DE40C471AFD60860FE_documentation_en-US" xlink:label="lab_dy_FairValueAssumptionsQualitativeAssessmentsAssetPercent_2BAD3B56F9BAB6DE40C471AFD60860FE" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Fair Value Assumptions, Qualitative Assessments, Asset Percent</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_FairValueAssumptionsQualitativeAssessmentsAssetPercent" xlink:label="loc_dy_FairValueAssumptionsQualitativeAssessmentsAssetPercent_2BAD3B56F9BAB6DE40C471AFD60860FE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_FairValueAssumptionsQualitativeAssessmentsAssetPercent_2BAD3B56F9BAB6DE40C471AFD60860FE" xlink:to="lab_dy_FairValueAssumptionsQualitativeAssessmentsAssetPercent_2BAD3B56F9BAB6DE40C471AFD60860FE" xlink:type="arc" />
    <link:label id="lab_us-gaap_FairValueInputsDiscountRate_59E843D9E03A3B85325071AFD608F8C5_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueInputsDiscountRate_59E843D9E03A3B85325071AFD608F8C5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Discount rate</link:label>
    <link:label id="lab_us-gaap_FairValueInputsDiscountRate_59E843D9E03A3B85325071AFD608F8C5_label_en-US" xlink:label="lab_us-gaap_FairValueInputsDiscountRate_59E843D9E03A3B85325071AFD608F8C5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value Inputs, Discount Rate</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FairValueInputsDiscountRate" xlink:label="loc_us-gaap_FairValueInputsDiscountRate_59E843D9E03A3B85325071AFD608F8C5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueInputsDiscountRate_59E843D9E03A3B85325071AFD608F8C5" xlink:to="lab_us-gaap_FairValueInputsDiscountRate_59E843D9E03A3B85325071AFD608F8C5" xlink:type="arc" />
    <link:label id="lab_dy_FairValueAssumptionsTerminalGrowthRate_43C13C87D6AD3C4A319B71AFD608EEA2_terseLabel_en-US" xlink:label="lab_dy_FairValueAssumptionsTerminalGrowthRate_43C13C87D6AD3C4A319B71AFD608EEA2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Terminal growth rate range</link:label>
    <link:label id="lab_dy_FairValueAssumptionsTerminalGrowthRate_43C13C87D6AD3C4A319B71AFD608EEA2_label_en-US" xlink:label="lab_dy_FairValueAssumptionsTerminalGrowthRate_43C13C87D6AD3C4A319B71AFD608EEA2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value Assumptions, Terminal Growth Rate</link:label>
    <link:label id="lab_dy_FairValueAssumptionsTerminalGrowthRate_43C13C87D6AD3C4A319B71AFD608EEA2_documentation_en-US" xlink:label="lab_dy_FairValueAssumptionsTerminalGrowthRate_43C13C87D6AD3C4A319B71AFD608EEA2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Fair Value Assumptions, Terminal Growth Rate</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_FairValueAssumptionsTerminalGrowthRate" xlink:label="loc_dy_FairValueAssumptionsTerminalGrowthRate_43C13C87D6AD3C4A319B71AFD608EEA2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_FairValueAssumptionsTerminalGrowthRate_43C13C87D6AD3C4A319B71AFD608EEA2" xlink:to="lab_dy_FairValueAssumptionsTerminalGrowthRate_43C13C87D6AD3C4A319B71AFD608EEA2" xlink:type="arc" />
    <link:label id="lab_us-gaap_FairValueAssumptionsExpectedTerm_1FC111E6CF6195418E2171AFD6082344_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueAssumptionsExpectedTerm_1FC111E6CF6195418E2171AFD6082344" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair value assumptions, expected term</link:label>
    <link:label id="lab_us-gaap_FairValueAssumptionsExpectedTerm_1FC111E6CF6195418E2171AFD6082344_label_en-US" xlink:label="lab_us-gaap_FairValueAssumptionsExpectedTerm_1FC111E6CF6195418E2171AFD6082344" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value Assumptions, Expected Term</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FairValueAssumptionsExpectedTerm" xlink:label="loc_us-gaap_FairValueAssumptionsExpectedTerm_1FC111E6CF6195418E2171AFD6082344" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueAssumptionsExpectedTerm_1FC111E6CF6195418E2171AFD6082344" xlink:to="lab_us-gaap_FairValueAssumptionsExpectedTerm_1FC111E6CF6195418E2171AFD6082344" xlink:type="arc" />
    <link:label id="lab_dy_NumberofReportingUnitsthatExceededCarryingValue_2D75E22027C78065842671AFD6084D6F_terseLabel_en-US" xlink:label="lab_dy_NumberofReportingUnitsthatExceededCarryingValue_2D75E22027C78065842671AFD6084D6F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of Reporting Units that Exceeded Carrying Value</link:label>
    <link:label id="lab_dy_NumberofReportingUnitsthatExceededCarryingValue_2D75E22027C78065842671AFD6084D6F_label_en-US" xlink:label="lab_dy_NumberofReportingUnitsthatExceededCarryingValue_2D75E22027C78065842671AFD6084D6F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number of Reporting Units that Exceeded Carrying Value</link:label>
    <link:label id="lab_dy_NumberofReportingUnitsthatExceededCarryingValue_2D75E22027C78065842671AFD6084D6F_documentation_en-US" xlink:label="lab_dy_NumberofReportingUnitsthatExceededCarryingValue_2D75E22027C78065842671AFD6084D6F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Number of Reporting Units that Exceeded Carrying Value</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_NumberofReportingUnitsthatExceededCarryingValue" xlink:label="loc_dy_NumberofReportingUnitsthatExceededCarryingValue_2D75E22027C78065842671AFD6084D6F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_NumberofReportingUnitsthatExceededCarryingValue_2D75E22027C78065842671AFD6084D6F" xlink:to="lab_dy_NumberofReportingUnitsthatExceededCarryingValue_2D75E22027C78065842671AFD6084D6F" xlink:type="arc" />
    <link:label id="lab_us-gaap_ReportingUnitPercentageOfFairValueInExcessOfCarryingAmount_8E749387BBFCE0CA07C271AFD608ED19_terseLabel_en-US" xlink:label="lab_us-gaap_ReportingUnitPercentageOfFairValueInExcessOfCarryingAmount_8E749387BBFCE0CA07C271AFD608ED19" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Excess carrying value, percent</link:label>
    <link:label id="lab_us-gaap_ReportingUnitPercentageOfFairValueInExcessOfCarryingAmount_8E749387BBFCE0CA07C271AFD608ED19_label_en-US" xlink:label="lab_us-gaap_ReportingUnitPercentageOfFairValueInExcessOfCarryingAmount_8E749387BBFCE0CA07C271AFD608ED19" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ReportingUnitPercentageOfFairValueInExcessOfCarryingAmount" xlink:label="loc_us-gaap_ReportingUnitPercentageOfFairValueInExcessOfCarryingAmount_8E749387BBFCE0CA07C271AFD608ED19" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ReportingUnitPercentageOfFairValueInExcessOfCarryingAmount_8E749387BBFCE0CA07C271AFD608ED19" xlink:to="lab_us-gaap_ReportingUnitPercentageOfFairValueInExcessOfCarryingAmount_8E749387BBFCE0CA07C271AFD608ED19" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsGross_A743694E1BD092C5328271AFD6081F44_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsGross_A743694E1BD092C5328271AFD6081F44" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Carrying amount</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsGross_A743694E1BD092C5328271AFD6081F44_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsGross_A743694E1BD092C5328271AFD6081F44" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Gross</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsGross" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_A743694E1BD092C5328271AFD6081F44" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsGross_A743694E1BD092C5328271AFD6081F44" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsGross_A743694E1BD092C5328271AFD6081F44" xlink:type="arc" />
    <link:label id="lab_us-gaap_AmortizationOfIntangibleAssets_D43103C61069C9D6614471AFD608C736_terseLabel_en-US" xlink:label="lab_us-gaap_AmortizationOfIntangibleAssets_D43103C61069C9D6614471AFD608C736" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amortization expense for finite-lived intangible assets</link:label>
    <link:label id="lab_us-gaap_AmortizationOfIntangibleAssets_D43103C61069C9D6614471AFD608C736_label_en-US" xlink:label="lab_us-gaap_AmortizationOfIntangibleAssets_D43103C61069C9D6614471AFD608C736" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AmortizationOfIntangibleAssets" xlink:label="loc_us-gaap_AmortizationOfIntangibleAssets_D43103C61069C9D6614471AFD608C736" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AmortizationOfIntangibleAssets_D43103C61069C9D6614471AFD608C736" xlink:to="lab_us-gaap_AmortizationOfIntangibleAssets_D43103C61069C9D6614471AFD608C736" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessCombinationsAbstract_9657FD956537558166D3700C46666AD6_label_en-US" xlink:label="lab_us-gaap_BusinessCombinationsAbstract_9657FD956537558166D3700C46666AD6" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_BusinessCombinationsAbstract" xlink:label="loc_us-gaap_BusinessCombinationsAbstract_9657FD956537558166D3700C46666AD6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessCombinationsAbstract_9657FD956537558166D3700C46666AD6" xlink:to="lab_us-gaap_BusinessCombinationsAbstract_9657FD956537558166D3700C46666AD6" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessCombinationDisclosureTextBlock_2CB683FB8334CFA49987700C46664C4E_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessCombinationDisclosureTextBlock_2CB683FB8334CFA49987700C46664C4E" 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_BusinessCombinationDisclosureTextBlock_2CB683FB8334CFA49987700C46664C4E_label_en-US" xlink:label="lab_us-gaap_BusinessCombinationDisclosureTextBlock_2CB683FB8334CFA49987700C46664C4E" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_BusinessCombinationDisclosureTextBlock" xlink:label="loc_us-gaap_BusinessCombinationDisclosureTextBlock_2CB683FB8334CFA49987700C46664C4E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessCombinationDisclosureTextBlock_2CB683FB8334CFA49987700C46664C4E" xlink:to="lab_us-gaap_BusinessCombinationDisclosureTextBlock_2CB683FB8334CFA49987700C46664C4E" xlink:type="arc" />
    <link:label id="lab_us-gaap_StatementOfFinancialPositionAbstract_E3EC4E6B246BEBF41754700C473127DE_label_en-US" xlink:label="lab_us-gaap_StatementOfFinancialPositionAbstract_E3EC4E6B246BEBF41754700C473127DE" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StatementOfFinancialPositionAbstract" xlink:label="loc_us-gaap_StatementOfFinancialPositionAbstract_E3EC4E6B246BEBF41754700C473127DE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementOfFinancialPositionAbstract_E3EC4E6B246BEBF41754700C473127DE" xlink:to="lab_us-gaap_StatementOfFinancialPositionAbstract_E3EC4E6B246BEBF41754700C473127DE" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentUnamortizedPremium_E6EB0928D097B8627BE0700C4731E93F_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentUnamortizedPremium_E6EB0928D097B8627BE0700C4731E93F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Long-term debt premium on 7.125% senior subordinated notes (amortizes to interest expense through January 2021)</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentUnamortizedPremium_E6EB0928D097B8627BE0700C4731E93F_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentUnamortizedPremium_E6EB0928D097B8627BE0700C4731E93F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Unamortized Premium</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DebtInstrumentUnamortizedPremium" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedPremium_E6EB0928D097B8627BE0700C4731E93F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentUnamortizedPremium_E6EB0928D097B8627BE0700C4731E93F" xlink:to="lab_us-gaap_DebtInstrumentUnamortizedPremium_E6EB0928D097B8627BE0700C4731E93F" xlink:type="arc" />
    <link:label id="lab_us-gaap_PreferredStockParOrStatedValuePerShare_B790C2825FD4F3E95827700C4731A4D6_terseLabel_en-US" xlink:label="lab_us-gaap_PreferredStockParOrStatedValuePerShare_B790C2825FD4F3E95827700C4731A4D6" 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_B790C2825FD4F3E95827700C4731A4D6_label_en-US" xlink:label="lab_us-gaap_PreferredStockParOrStatedValuePerShare_B790C2825FD4F3E95827700C4731A4D6" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PreferredStockParOrStatedValuePerShare" xlink:label="loc_us-gaap_PreferredStockParOrStatedValuePerShare_B790C2825FD4F3E95827700C4731A4D6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PreferredStockParOrStatedValuePerShare_B790C2825FD4F3E95827700C4731A4D6" xlink:to="lab_us-gaap_PreferredStockParOrStatedValuePerShare_B790C2825FD4F3E95827700C4731A4D6" xlink:type="arc" />
    <link:label id="lab_us-gaap_PreferredStockSharesAuthorized_9AC6A6DDE64935FE9B85700C47311CD1_terseLabel_en-US" xlink:label="lab_us-gaap_PreferredStockSharesAuthorized_9AC6A6DDE64935FE9B85700C47311CD1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Preferred stock, authorized (in shares)</link:label>
    <link:label id="lab_us-gaap_PreferredStockSharesAuthorized_9AC6A6DDE64935FE9B85700C47311CD1_label_en-US" xlink:label="lab_us-gaap_PreferredStockSharesAuthorized_9AC6A6DDE64935FE9B85700C47311CD1" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PreferredStockSharesAuthorized" xlink:label="loc_us-gaap_PreferredStockSharesAuthorized_9AC6A6DDE64935FE9B85700C47311CD1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PreferredStockSharesAuthorized_9AC6A6DDE64935FE9B85700C47311CD1" xlink:to="lab_us-gaap_PreferredStockSharesAuthorized_9AC6A6DDE64935FE9B85700C47311CD1" xlink:type="arc" />
    <link:label id="lab_us-gaap_PreferredStockSharesIssued_336A41D4EB001F6AC475700C4731CF4F_terseLabel_en-US" xlink:label="lab_us-gaap_PreferredStockSharesIssued_336A41D4EB001F6AC475700C4731CF4F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Preferred stock, issued (in shares)</link:label>
    <link:label id="lab_us-gaap_PreferredStockSharesIssued_336A41D4EB001F6AC475700C4731CF4F_label_en-US" xlink:label="lab_us-gaap_PreferredStockSharesIssued_336A41D4EB001F6AC475700C4731CF4F" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PreferredStockSharesIssued" xlink:label="loc_us-gaap_PreferredStockSharesIssued_336A41D4EB001F6AC475700C4731CF4F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PreferredStockSharesIssued_336A41D4EB001F6AC475700C4731CF4F" xlink:to="lab_us-gaap_PreferredStockSharesIssued_336A41D4EB001F6AC475700C4731CF4F" xlink:type="arc" />
    <link:label id="lab_us-gaap_PreferredStockSharesOutstanding_A09C9F47311216CD3D70700C4731FF9B_terseLabel_en-US" xlink:label="lab_us-gaap_PreferredStockSharesOutstanding_A09C9F47311216CD3D70700C4731FF9B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Preferred stock, outstanding (in shares)</link:label>
    <link:label id="lab_us-gaap_PreferredStockSharesOutstanding_A09C9F47311216CD3D70700C4731FF9B_label_en-US" xlink:label="lab_us-gaap_PreferredStockSharesOutstanding_A09C9F47311216CD3D70700C4731FF9B" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PreferredStockSharesOutstanding" xlink:label="loc_us-gaap_PreferredStockSharesOutstanding_A09C9F47311216CD3D70700C4731FF9B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PreferredStockSharesOutstanding_A09C9F47311216CD3D70700C4731FF9B" xlink:to="lab_us-gaap_PreferredStockSharesOutstanding_A09C9F47311216CD3D70700C4731FF9B" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommonStockParOrStatedValuePerShare_07D16D08ACCFABC35273700C4731616D_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockParOrStatedValuePerShare_07D16D08ACCFABC35273700C4731616D" 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_07D16D08ACCFABC35273700C4731616D_label_en-US" xlink:label="lab_us-gaap_CommonStockParOrStatedValuePerShare_07D16D08ACCFABC35273700C4731616D" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CommonStockParOrStatedValuePerShare" xlink:label="loc_us-gaap_CommonStockParOrStatedValuePerShare_07D16D08ACCFABC35273700C4731616D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockParOrStatedValuePerShare_07D16D08ACCFABC35273700C4731616D" xlink:to="lab_us-gaap_CommonStockParOrStatedValuePerShare_07D16D08ACCFABC35273700C4731616D" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommonStockSharesAuthorized_E209E9EC7F12E782CC60700C47313537_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockSharesAuthorized_E209E9EC7F12E782CC60700C47313537" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Common stock, authorized (in shares)</link:label>
    <link:label id="lab_us-gaap_CommonStockSharesAuthorized_E209E9EC7F12E782CC60700C47313537_label_en-US" xlink:label="lab_us-gaap_CommonStockSharesAuthorized_E209E9EC7F12E782CC60700C47313537" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CommonStockSharesAuthorized" xlink:label="loc_us-gaap_CommonStockSharesAuthorized_E209E9EC7F12E782CC60700C47313537" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockSharesAuthorized_E209E9EC7F12E782CC60700C47313537" xlink:to="lab_us-gaap_CommonStockSharesAuthorized_E209E9EC7F12E782CC60700C47313537" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommonStockSharesIssued_E24559BC057D7203EAD7700C473100C8_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockSharesIssued_E24559BC057D7203EAD7700C473100C8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Common stock, issued (in shares)</link:label>
    <link:label id="lab_us-gaap_CommonStockSharesIssued_E24559BC057D7203EAD7700C473100C8_label_en-US" xlink:label="lab_us-gaap_CommonStockSharesIssued_E24559BC057D7203EAD7700C473100C8" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CommonStockSharesIssued" xlink:label="loc_us-gaap_CommonStockSharesIssued_E24559BC057D7203EAD7700C473100C8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockSharesIssued_E24559BC057D7203EAD7700C473100C8" xlink:to="lab_us-gaap_CommonStockSharesIssued_E24559BC057D7203EAD7700C473100C8" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommonStockSharesOutstanding_B2E25AD5E0DD1DF775E4700C4731D573_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockSharesOutstanding_B2E25AD5E0DD1DF775E4700C4731D573" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Common stock, outstanding (in shares)</link:label>
    <link:label id="lab_us-gaap_CommonStockSharesOutstanding_B2E25AD5E0DD1DF775E4700C4731D573_label_en-US" xlink:label="lab_us-gaap_CommonStockSharesOutstanding_B2E25AD5E0DD1DF775E4700C4731D573" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CommonStockSharesOutstanding" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_B2E25AD5E0DD1DF775E4700C4731D573" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockSharesOutstanding_B2E25AD5E0DD1DF775E4700C4731D573" xlink:to="lab_us-gaap_CommonStockSharesOutstanding_B2E25AD5E0DD1DF775E4700C4731D573" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncomeStatementAbstract_B5E4B161EFA1569B51F8690C63ABDF07_label_en-US" xlink:label="lab_us-gaap_IncomeStatementAbstract_B5E4B161EFA1569B51F8690C63ABDF07" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncomeStatementAbstract" xlink:label="loc_us-gaap_IncomeStatementAbstract_B5E4B161EFA1569B51F8690C63ABDF07" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeStatementAbstract_B5E4B161EFA1569B51F8690C63ABDF07" xlink:to="lab_us-gaap_IncomeStatementAbstract_B5E4B161EFA1569B51F8690C63ABDF07" xlink:type="arc" />
    <link:label id="lab_us-gaap_SalesRevenueNetAbstract_E7DFEF83485C3869AD5A690C63ABD93A_terseLabel_en-US" xlink:label="lab_us-gaap_SalesRevenueNetAbstract_E7DFEF83485C3869AD5A690C63ABD93A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">REVENUES:</link:label>
    <link:label id="lab_us-gaap_SalesRevenueNetAbstract_E7DFEF83485C3869AD5A690C63ABD93A_label_en-US" xlink:label="lab_us-gaap_SalesRevenueNetAbstract_E7DFEF83485C3869AD5A690C63ABD93A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenue, Net [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SalesRevenueNetAbstract" xlink:label="loc_us-gaap_SalesRevenueNetAbstract_E7DFEF83485C3869AD5A690C63ABD93A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SalesRevenueNetAbstract_E7DFEF83485C3869AD5A690C63ABD93A" xlink:to="lab_us-gaap_SalesRevenueNetAbstract_E7DFEF83485C3869AD5A690C63ABD93A" xlink:type="arc" />
    <link:label id="lab_us-gaap_SalesRevenueServicesNet_725065D769D6FBEA9B9E690C63ABDBEF_terseLabel_en-US" xlink:label="lab_us-gaap_SalesRevenueServicesNet_725065D769D6FBEA9B9E690C63ABDBEF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Contract revenues</link:label>
    <link:label id="lab_us-gaap_SalesRevenueServicesNet_725065D769D6FBEA9B9E690C63ABDBEF_label_en-US" xlink:label="lab_us-gaap_SalesRevenueServicesNet_725065D769D6FBEA9B9E690C63ABDBEF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Sales Revenue, Services, Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SalesRevenueServicesNet" xlink:label="loc_us-gaap_SalesRevenueServicesNet_725065D769D6FBEA9B9E690C63ABDBEF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SalesRevenueServicesNet_725065D769D6FBEA9B9E690C63ABDBEF" xlink:to="lab_us-gaap_SalesRevenueServicesNet_725065D769D6FBEA9B9E690C63ABDBEF" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingExpensesAbstract_E0F9A766D9531D4A8FA2690C63ABC62B_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingExpensesAbstract_E0F9A766D9531D4A8FA2690C63ABC62B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">EXPENSES:</link:label>
    <link:label id="lab_us-gaap_OperatingExpensesAbstract_E0F9A766D9531D4A8FA2690C63ABC62B_label_en-US" xlink:label="lab_us-gaap_OperatingExpensesAbstract_E0F9A766D9531D4A8FA2690C63ABC62B" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OperatingExpensesAbstract" xlink:label="loc_us-gaap_OperatingExpensesAbstract_E0F9A766D9531D4A8FA2690C63ABC62B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingExpensesAbstract_E0F9A766D9531D4A8FA2690C63ABC62B" xlink:to="lab_us-gaap_OperatingExpensesAbstract_E0F9A766D9531D4A8FA2690C63ABC62B" xlink:type="arc" />
    <link:label id="lab_us-gaap_CostOfServicesExcludingDepreciationDepletionAndAmortization_1B462E3C2AB8F0A937FA690C63AB185F_terseLabel_en-US" xlink:label="lab_us-gaap_CostOfServicesExcludingDepreciationDepletionAndAmortization_1B462E3C2AB8F0A937FA690C63AB185F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Costs of earned revenues, excluding depreciation and amortization</link:label>
    <link:label id="lab_us-gaap_CostOfServicesExcludingDepreciationDepletionAndAmortization_1B462E3C2AB8F0A937FA690C63AB185F_label_en-US" xlink:label="lab_us-gaap_CostOfServicesExcludingDepreciationDepletionAndAmortization_1B462E3C2AB8F0A937FA690C63AB185F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cost of Services, Excluding Depreciation, Depletion, and Amortization</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CostOfServicesExcludingDepreciationDepletionAndAmortization" xlink:label="loc_us-gaap_CostOfServicesExcludingDepreciationDepletionAndAmortization_1B462E3C2AB8F0A937FA690C63AB185F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CostOfServicesExcludingDepreciationDepletionAndAmortization_1B462E3C2AB8F0A937FA690C63AB185F" xlink:to="lab_us-gaap_CostOfServicesExcludingDepreciationDepletionAndAmortization_1B462E3C2AB8F0A937FA690C63AB185F" xlink:type="arc" />
    <link:label id="lab_us-gaap_GeneralAndAdministrativeExpense_AE5525BBC270CD83A7FE690C63ABFCAE_terseLabel_en-US" xlink:label="lab_us-gaap_GeneralAndAdministrativeExpense_AE5525BBC270CD83A7FE690C63ABFCAE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">General and administrative</link:label>
    <link:label id="lab_us-gaap_GeneralAndAdministrativeExpense_AE5525BBC270CD83A7FE690C63ABFCAE_label_en-US" xlink:label="lab_us-gaap_GeneralAndAdministrativeExpense_AE5525BBC270CD83A7FE690C63ABFCAE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">General and Administrative Expense</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_GeneralAndAdministrativeExpense" xlink:label="loc_us-gaap_GeneralAndAdministrativeExpense_AE5525BBC270CD83A7FE690C63ABFCAE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GeneralAndAdministrativeExpense_AE5525BBC270CD83A7FE690C63ABFCAE" xlink:to="lab_us-gaap_GeneralAndAdministrativeExpense_AE5525BBC270CD83A7FE690C63ABFCAE" xlink:type="arc" />
    <link:label id="lab_us-gaap_DepreciationDepletionAndAmortization_45939A27EBF9733B464A690C63ACD694_terseLabel_en-US" xlink:label="lab_us-gaap_DepreciationDepletionAndAmortization_45939A27EBF9733B464A690C63ACD694" 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_DepreciationDepletionAndAmortization_45939A27EBF9733B464A690C63ACD694_label_en-US" xlink:label="lab_us-gaap_DepreciationDepletionAndAmortization_45939A27EBF9733B464A690C63ACD694" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Depreciation, Depletion and Amortization</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DepreciationDepletionAndAmortization" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_45939A27EBF9733B464A690C63ACD694" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DepreciationDepletionAndAmortization_45939A27EBF9733B464A690C63ACD694" xlink:to="lab_us-gaap_DepreciationDepletionAndAmortization_45939A27EBF9733B464A690C63ACD694" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingExpenses_DAB52F8DC5734EA0981C690C63AC77B7_totalLabel_en-US" xlink:label="lab_us-gaap_OperatingExpenses_DAB52F8DC5734EA0981C690C63AC77B7" 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_OperatingExpenses_DAB52F8DC5734EA0981C690C63AC77B7_label_en-US" xlink:label="lab_us-gaap_OperatingExpenses_DAB52F8DC5734EA0981C690C63AC77B7" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OperatingExpenses" xlink:label="loc_us-gaap_OperatingExpenses_DAB52F8DC5734EA0981C690C63AC77B7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingExpenses_DAB52F8DC5734EA0981C690C63AC77B7" xlink:to="lab_us-gaap_OperatingExpenses_DAB52F8DC5734EA0981C690C63AC77B7" xlink:type="arc" />
    <link:label id="lab_us-gaap_InterestIncomeExpenseNet_037D96AA3EE26F3C0B49690C63ACEF5D_terseLabel_en-US" xlink:label="lab_us-gaap_InterestIncomeExpenseNet_037D96AA3EE26F3C0B49690C63ACEF5D" 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_037D96AA3EE26F3C0B49690C63ACEF5D_label_en-US" xlink:label="lab_us-gaap_InterestIncomeExpenseNet_037D96AA3EE26F3C0B49690C63ACEF5D" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_InterestIncomeExpenseNet" xlink:label="loc_us-gaap_InterestIncomeExpenseNet_037D96AA3EE26F3C0B49690C63ACEF5D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InterestIncomeExpenseNet_037D96AA3EE26F3C0B49690C63ACEF5D" xlink:to="lab_us-gaap_InterestIncomeExpenseNet_037D96AA3EE26F3C0B49690C63ACEF5D" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherNonoperatingIncomeExpense_6561CC609EFC5802E586690C63ACB0FA_terseLabel_en-US" xlink:label="lab_us-gaap_OtherNonoperatingIncomeExpense_6561CC609EFC5802E586690C63ACB0FA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other income, net</link:label>
    <link:label id="lab_us-gaap_OtherNonoperatingIncomeExpense_6561CC609EFC5802E586690C63ACB0FA_label_en-US" xlink:label="lab_us-gaap_OtherNonoperatingIncomeExpense_6561CC609EFC5802E586690C63ACB0FA" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherNonoperatingIncomeExpense" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_6561CC609EFC5802E586690C63ACB0FA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherNonoperatingIncomeExpense_6561CC609EFC5802E586690C63ACB0FA" xlink:to="lab_us-gaap_OtherNonoperatingIncomeExpense_6561CC609EFC5802E586690C63ACB0FA" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_285CBA7432B4529B76D9690C63AC0592_totalLabel_en-US" xlink:label="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_285CBA7432B4529B76D9690C63AC0592" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Income before income taxes</link:label>
    <link:label id="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_285CBA7432B4529B76D9690C63AC0592_label_en-US" xlink:label="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_285CBA7432B4529B76D9690C63AC0592" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_285CBA7432B4529B76D9690C63AC0592" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_285CBA7432B4529B76D9690C63AC0592" xlink:to="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_285CBA7432B4529B76D9690C63AC0592" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsAbstract_E489246165C3EFCD051E690C63AC1332_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsAbstract_E489246165C3EFCD051E690C63AC1332" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Provision (benefit) for income taxes:</link:label>
    <link:label id="lab_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsAbstract_E489246165C3EFCD051E690C63AC1332_label_en-US" xlink:label="lab_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsAbstract_E489246165C3EFCD051E690C63AC1332" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Tax Expense (Benefit), Continuing Operations [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncomeTaxExpenseBenefitContinuingOperationsAbstract" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsAbstract_E489246165C3EFCD051E690C63AC1332" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsAbstract_E489246165C3EFCD051E690C63AC1332" xlink:to="lab_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsAbstract_E489246165C3EFCD051E690C63AC1332" xlink:type="arc" />
    <link:label id="lab_us-gaap_CurrentIncomeTaxExpenseBenefit_FAAA296E5830AC490CA8690C63AC92C2_terseLabel_en-US" xlink:label="lab_us-gaap_CurrentIncomeTaxExpenseBenefit_FAAA296E5830AC490CA8690C63AC92C2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Current</link:label>
    <link:label id="lab_us-gaap_CurrentIncomeTaxExpenseBenefit_FAAA296E5830AC490CA8690C63AC92C2_label_en-US" xlink:label="lab_us-gaap_CurrentIncomeTaxExpenseBenefit_FAAA296E5830AC490CA8690C63AC92C2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Current Income Tax Expense (Benefit)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CurrentIncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_FAAA296E5830AC490CA8690C63AC92C2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_FAAA296E5830AC490CA8690C63AC92C2" xlink:to="lab_us-gaap_CurrentIncomeTaxExpenseBenefit_FAAA296E5830AC490CA8690C63AC92C2" xlink:type="arc" />
    <link:label id="lab_us-gaap_DeferredIncomeTaxExpenseBenefit_E86A2E61596FA9A8818C690C63AD58D6_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredIncomeTaxExpenseBenefit_E86A2E61596FA9A8818C690C63AD58D6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deferred</link:label>
    <link:label id="lab_us-gaap_DeferredIncomeTaxExpenseBenefit_E86A2E61596FA9A8818C690C63AD58D6_label_en-US" xlink:label="lab_us-gaap_DeferredIncomeTaxExpenseBenefit_E86A2E61596FA9A8818C690C63AD58D6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred Income Tax Expense (Benefit)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_E86A2E61596FA9A8818C690C63AD58D6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_E86A2E61596FA9A8818C690C63AD58D6" xlink:to="lab_us-gaap_DeferredIncomeTaxExpenseBenefit_E86A2E61596FA9A8818C690C63AD58D6" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncomeTaxExpenseBenefit_6788D02FC1561011FCDD690C63AD497A_totalLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxExpenseBenefit_6788D02FC1561011FCDD690C63AD497A" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total provision for income taxes</link:label>
    <link:label id="lab_us-gaap_IncomeTaxExpenseBenefit_6788D02FC1561011FCDD690C63AD497A_label_en-US" xlink:label="lab_us-gaap_IncomeTaxExpenseBenefit_6788D02FC1561011FCDD690C63AD497A" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_6788D02FC1561011FCDD690C63AD497A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_6788D02FC1561011FCDD690C63AD497A" xlink:to="lab_us-gaap_IncomeTaxExpenseBenefit_6788D02FC1561011FCDD690C63AD497A" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetIncomeLoss_35A6787F9F0ECB5BFA25690C63AD7591_totalLabel_en-US" xlink:label="lab_us-gaap_NetIncomeLoss_35A6787F9F0ECB5BFA25690C63AD7591" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net income</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_35A6787F9F0ECB5BFA25690C63AD7591" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetIncomeLoss_35A6787F9F0ECB5BFA25690C63AD7591" xlink:to="lab_us-gaap_NetIncomeLoss_35A6787F9F0ECB5BFA25690C63AD7591" xlink:type="arc" />
    <link:label id="lab_us-gaap_EarningsPerShareAbstract_7F0A30E7811BC450470F690C63ADE2C4_verboseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareAbstract_7F0A30E7811BC450470F690C63ADE2C4" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Earnings per common share:</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_EarningsPerShareAbstract" xlink:label="loc_us-gaap_EarningsPerShareAbstract_7F0A30E7811BC450470F690C63ADE2C4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EarningsPerShareAbstract_7F0A30E7811BC450470F690C63ADE2C4" xlink:to="lab_us-gaap_EarningsPerShareAbstract_7F0A30E7811BC450470F690C63ADE2C4" xlink:type="arc" />
    <link:label id="lab_us-gaap_EarningsPerShareBasic_AA355706C4678043813A690C63ADA287_terseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareBasic_AA355706C4678043813A690C63ADA287" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Basic earnings (loss) per common share (in dollars per share)</link:label>
    <link:label id="lab_us-gaap_EarningsPerShareBasic_AA355706C4678043813A690C63ADA287_label_en-US" xlink:label="lab_us-gaap_EarningsPerShareBasic_AA355706C4678043813A690C63ADA287" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_EarningsPerShareBasic" xlink:label="loc_us-gaap_EarningsPerShareBasic_AA355706C4678043813A690C63ADA287" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EarningsPerShareBasic_AA355706C4678043813A690C63ADA287" xlink:to="lab_us-gaap_EarningsPerShareBasic_AA355706C4678043813A690C63ADA287" xlink:type="arc" />
    <link:label id="lab_us-gaap_EarningsPerShareDiluted_5D8B9FAEF1B27036CACC690C63ADD312_terseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareDiluted_5D8B9FAEF1B27036CACC690C63ADD312" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Diluted earnings (loss) per common share (in dollars per share)</link:label>
    <link:label id="lab_us-gaap_EarningsPerShareDiluted_5D8B9FAEF1B27036CACC690C63ADD312_label_en-US" xlink:label="lab_us-gaap_EarningsPerShareDiluted_5D8B9FAEF1B27036CACC690C63ADD312" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_EarningsPerShareDiluted" xlink:label="loc_us-gaap_EarningsPerShareDiluted_5D8B9FAEF1B27036CACC690C63ADD312" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EarningsPerShareDiluted_5D8B9FAEF1B27036CACC690C63ADD312" xlink:to="lab_us-gaap_EarningsPerShareDiluted_5D8B9FAEF1B27036CACC690C63ADD312" xlink:type="arc" />
    <link:label id="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_A9679EAC530508E95E3D690C63B217A3_terseLabel_en-US" xlink:label="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_A9679EAC530508E95E3D690C63B217A3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Shares used in computing earnings per common share:</link:label>
    <link:label id="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_A9679EAC530508E95E3D690C63B217A3_label_en-US" xlink:label="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_A9679EAC530508E95E3D690C63B217A3" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_A9679EAC530508E95E3D690C63B217A3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_A9679EAC530508E95E3D690C63B217A3" xlink:to="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_A9679EAC530508E95E3D690C63B217A3" xlink:type="arc" />
    <link:label id="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_8B1D0503452183D6621E690C63B245CC_verboseLabel_en-US" xlink:label="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_8B1D0503452183D6621E690C63B245CC" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Basic (in shares)</link:label>
    <link:label id="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_8B1D0503452183D6621E690C63B245CC_label_en-US" xlink:label="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_8B1D0503452183D6621E690C63B245CC" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_8B1D0503452183D6621E690C63B245CC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_8B1D0503452183D6621E690C63B245CC" xlink:to="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_8B1D0503452183D6621E690C63B245CC" xlink:type="arc" />
    <link:label id="lab_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_2C6925F91E06CFC3DE0B690C63B2F469_terseLabel_en-US" xlink:label="lab_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_2C6925F91E06CFC3DE0B690C63B2F469" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Diluted (in shares)</link:label>
    <link:label id="lab_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_2C6925F91E06CFC3DE0B690C63B2F469_label_en-US" xlink:label="lab_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_2C6925F91E06CFC3DE0B690C63B2F469" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_2C6925F91E06CFC3DE0B690C63B2F469" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_2C6925F91E06CFC3DE0B690C63B2F469" xlink:to="lab_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_2C6925F91E06CFC3DE0B690C63B2F469" xlink:type="arc" />
    <link:label id="lab_us-gaap_AssetsAbstract_00BEC668FD2FD2D9828671AFD684A16F_terseLabel_en-US" xlink:label="lab_us-gaap_AssetsAbstract_00BEC668FD2FD2D9828671AFD684A16F" 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_00BEC668FD2FD2D9828671AFD684A16F_label_en-US" xlink:label="lab_us-gaap_AssetsAbstract_00BEC668FD2FD2D9828671AFD684A16F" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AssetsAbstract" xlink:label="loc_us-gaap_AssetsAbstract_00BEC668FD2FD2D9828671AFD684A16F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AssetsAbstract_00BEC668FD2FD2D9828671AFD684A16F" xlink:to="lab_us-gaap_AssetsAbstract_00BEC668FD2FD2D9828671AFD684A16F" xlink:type="arc" />
    <link:label id="lab_us-gaap_AssetsCurrentAbstract_05E41BF94E9C3C77210E71AFD6843AE1_terseLabel_en-US" xlink:label="lab_us-gaap_AssetsCurrentAbstract_05E41BF94E9C3C77210E71AFD6843AE1" 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_05E41BF94E9C3C77210E71AFD6843AE1_label_en-US" xlink:label="lab_us-gaap_AssetsCurrentAbstract_05E41BF94E9C3C77210E71AFD6843AE1" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AssetsCurrentAbstract" xlink:label="loc_us-gaap_AssetsCurrentAbstract_05E41BF94E9C3C77210E71AFD6843AE1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AssetsCurrentAbstract_05E41BF94E9C3C77210E71AFD6843AE1" xlink:to="lab_us-gaap_AssetsCurrentAbstract_05E41BF94E9C3C77210E71AFD6843AE1" xlink:type="arc" />
    <link:label id="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_7F6610F5E4E1A3283E6B71AFD6847DD5_verboseLabel_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_7F6610F5E4E1A3283E6B71AFD6847DD5" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Cash and equivalents</link:label>
    <link:label id="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_7F6610F5E4E1A3283E6B71AFD6847DD5_label_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_7F6610F5E4E1A3283E6B71AFD6847DD5" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_7F6610F5E4E1A3283E6B71AFD6847DD5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_7F6610F5E4E1A3283E6B71AFD6847DD5" xlink:to="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_7F6610F5E4E1A3283E6B71AFD6847DD5" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccountsReceivableNetCurrent_80D91941A939AE5A12AC71AFD6854312_verboseLabel_en-US" xlink:label="lab_us-gaap_AccountsReceivableNetCurrent_80D91941A939AE5A12AC71AFD6854312" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Accounts receivable, net</link:label>
    <link:label id="lab_us-gaap_AccountsReceivableNetCurrent_80D91941A939AE5A12AC71AFD6854312_label_en-US" xlink:label="lab_us-gaap_AccountsReceivableNetCurrent_80D91941A939AE5A12AC71AFD6854312" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AccountsReceivableNetCurrent" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_80D91941A939AE5A12AC71AFD6854312" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountsReceivableNetCurrent_80D91941A939AE5A12AC71AFD6854312" xlink:to="lab_us-gaap_AccountsReceivableNetCurrent_80D91941A939AE5A12AC71AFD6854312" xlink:type="arc" />
    <link:label id="lab_dy_CostsAndEstimatedEarningsInExcessOfBillings_9AC96E49698B21B82CF371AFD6854A13_verboseLabel_en-US" xlink:label="lab_dy_CostsAndEstimatedEarningsInExcessOfBillings_9AC96E49698B21B82CF371AFD6854A13" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Costs and estimated earnings in excess of billings</link:label>
    <link:label id="lab_dy_CostsAndEstimatedEarningsInExcessOfBillings_9AC96E49698B21B82CF371AFD6854A13_label_en-US" xlink:label="lab_dy_CostsAndEstimatedEarningsInExcessOfBillings_9AC96E49698B21B82CF371AFD6854A13" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Costs and Estimated Earnings in Excess of Billings</link:label>
    <link:label id="lab_dy_CostsAndEstimatedEarningsInExcessOfBillings_9AC96E49698B21B82CF371AFD6854A13_documentation_en-US" xlink:label="lab_dy_CostsAndEstimatedEarningsInExcessOfBillings_9AC96E49698B21B82CF371AFD6854A13" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Costs and Estimated Earnings in Excess of Billings</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_CostsAndEstimatedEarningsInExcessOfBillings" xlink:label="loc_dy_CostsAndEstimatedEarningsInExcessOfBillings_9AC96E49698B21B82CF371AFD6854A13" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_CostsAndEstimatedEarningsInExcessOfBillings_9AC96E49698B21B82CF371AFD6854A13" xlink:to="lab_dy_CostsAndEstimatedEarningsInExcessOfBillings_9AC96E49698B21B82CF371AFD6854A13" xlink:type="arc" />
    <link:label id="lab_us-gaap_InventoryNet_0E29109953FDE0A7809971AFD68545CC_terseLabel_en-US" xlink:label="lab_us-gaap_InventoryNet_0E29109953FDE0A7809971AFD68545CC" 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_0E29109953FDE0A7809971AFD68545CC_label_en-US" xlink:label="lab_us-gaap_InventoryNet_0E29109953FDE0A7809971AFD68545CC" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_InventoryNet" xlink:label="loc_us-gaap_InventoryNet_0E29109953FDE0A7809971AFD68545CC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InventoryNet_0E29109953FDE0A7809971AFD68545CC" xlink:to="lab_us-gaap_InventoryNet_0E29109953FDE0A7809971AFD68545CC" xlink:type="arc" />
    <link:label id="lab_us-gaap_DeferredTaxAssetsNetCurrent_5EB437AED9A6ED88158971AFD6859E5B_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredTaxAssetsNetCurrent_5EB437AED9A6ED88158971AFD6859E5B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deferred tax assets, net</link:label>
    <link:label id="lab_us-gaap_DeferredTaxAssetsNetCurrent_5EB437AED9A6ED88158971AFD6859E5B_label_en-US" xlink:label="lab_us-gaap_DeferredTaxAssetsNetCurrent_5EB437AED9A6ED88158971AFD6859E5B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred Tax Assets, Net of Valuation Allowance, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DeferredTaxAssetsNetCurrent" xlink:label="loc_us-gaap_DeferredTaxAssetsNetCurrent_5EB437AED9A6ED88158971AFD6859E5B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DeferredTaxAssetsNetCurrent_5EB437AED9A6ED88158971AFD6859E5B" xlink:to="lab_us-gaap_DeferredTaxAssetsNetCurrent_5EB437AED9A6ED88158971AFD6859E5B" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherAssetsCurrent_38A7E49F4C4EA1C5EA5771AFD6858888_terseLabel_en-US" xlink:label="lab_us-gaap_OtherAssetsCurrent_38A7E49F4C4EA1C5EA5771AFD6858888" 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_38A7E49F4C4EA1C5EA5771AFD6858888_label_en-US" xlink:label="lab_us-gaap_OtherAssetsCurrent_38A7E49F4C4EA1C5EA5771AFD6858888" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherAssetsCurrent" xlink:label="loc_us-gaap_OtherAssetsCurrent_38A7E49F4C4EA1C5EA5771AFD6858888" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherAssetsCurrent_38A7E49F4C4EA1C5EA5771AFD6858888" xlink:to="lab_us-gaap_OtherAssetsCurrent_38A7E49F4C4EA1C5EA5771AFD6858888" xlink:type="arc" />
    <link:label id="lab_us-gaap_AssetsCurrent_02479A7C7522D9A6954971AFD6859D6A_totalLabel_en-US" xlink:label="lab_us-gaap_AssetsCurrent_02479A7C7522D9A6954971AFD6859D6A" 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_02479A7C7522D9A6954971AFD6859D6A_label_en-US" xlink:label="lab_us-gaap_AssetsCurrent_02479A7C7522D9A6954971AFD6859D6A" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AssetsCurrent" xlink:label="loc_us-gaap_AssetsCurrent_02479A7C7522D9A6954971AFD6859D6A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AssetsCurrent_02479A7C7522D9A6954971AFD6859D6A" xlink:to="lab_us-gaap_AssetsCurrent_02479A7C7522D9A6954971AFD6859D6A" xlink:type="arc" />
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentNet_6106D1CDAEF12E72FCEB71AFD6850D7B_terseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentNet_6106D1CDAEF12E72FCEB71AFD6850D7B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Property and equipment, net</link:label>
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentNet_6106D1CDAEF12E72FCEB71AFD6850D7B_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentNet_6106D1CDAEF12E72FCEB71AFD6850D7B" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_6106D1CDAEF12E72FCEB71AFD6850D7B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet_6106D1CDAEF12E72FCEB71AFD6850D7B" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentNet_6106D1CDAEF12E72FCEB71AFD6850D7B" xlink:type="arc" />
    <link:label id="lab_us-gaap_Goodwill_8228497CA7580A148E4471AFD686776F_verboseLabel_en-US" xlink:label="lab_us-gaap_Goodwill_8228497CA7580A148E4471AFD686776F" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Goodwill</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaap_Goodwill_8228497CA7580A148E4471AFD686776F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Goodwill_8228497CA7580A148E4471AFD686776F" xlink:to="lab_us-gaap_Goodwill_8228497CA7580A148E4471AFD686776F" xlink:type="arc" />
    <link:label id="lab_us-gaap_IntangibleAssetsNetExcludingGoodwill_4A7DCADBB21D15652AA671AFD6867B00_terseLabel_en-US" xlink:label="lab_us-gaap_IntangibleAssetsNetExcludingGoodwill_4A7DCADBB21D15652AA671AFD6867B00" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Intangible assets, net</link:label>
    <link:label id="lab_us-gaap_IntangibleAssetsNetExcludingGoodwill_4A7DCADBB21D15652AA671AFD6867B00_label_en-US" xlink:label="lab_us-gaap_IntangibleAssetsNetExcludingGoodwill_4A7DCADBB21D15652AA671AFD6867B00" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_4A7DCADBB21D15652AA671AFD6867B00" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_4A7DCADBB21D15652AA671AFD6867B00" xlink:to="lab_us-gaap_IntangibleAssetsNetExcludingGoodwill_4A7DCADBB21D15652AA671AFD6867B00" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherAssetsNoncurrent_C6D69A1AAA562E8BB2D571AFD6866136_terseLabel_en-US" xlink:label="lab_us-gaap_OtherAssetsNoncurrent_C6D69A1AAA562E8BB2D571AFD6866136" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other</link:label>
    <link:label id="lab_us-gaap_OtherAssetsNoncurrent_C6D69A1AAA562E8BB2D571AFD6866136_label_en-US" xlink:label="lab_us-gaap_OtherAssetsNoncurrent_C6D69A1AAA562E8BB2D571AFD6866136" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherAssetsNoncurrent" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_C6D69A1AAA562E8BB2D571AFD6866136" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherAssetsNoncurrent_C6D69A1AAA562E8BB2D571AFD6866136" xlink:to="lab_us-gaap_OtherAssetsNoncurrent_C6D69A1AAA562E8BB2D571AFD6866136" xlink:type="arc" />
    <link:label id="lab_us-gaap_AssetsNoncurrent_8D4B3235350BF963876671AFD68673FE_totalLabel_en-US" xlink:label="lab_us-gaap_AssetsNoncurrent_8D4B3235350BF963876671AFD68673FE" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total non-current assets</link:label>
    <link:label id="lab_us-gaap_AssetsNoncurrent_8D4B3235350BF963876671AFD68673FE_label_en-US" xlink:label="lab_us-gaap_AssetsNoncurrent_8D4B3235350BF963876671AFD68673FE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Assets, Noncurrent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AssetsNoncurrent" xlink:label="loc_us-gaap_AssetsNoncurrent_8D4B3235350BF963876671AFD68673FE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AssetsNoncurrent_8D4B3235350BF963876671AFD68673FE" xlink:to="lab_us-gaap_AssetsNoncurrent_8D4B3235350BF963876671AFD68673FE" xlink:type="arc" />
    <link:label id="lab_us-gaap_Assets_90AAE37BFF7AC345875F71AFD686BBA0_totalLabel_en-US" xlink:label="lab_us-gaap_Assets_90AAE37BFF7AC345875F71AFD686BBA0" 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_90AAE37BFF7AC345875F71AFD686BBA0_label_en-US" xlink:label="lab_us-gaap_Assets_90AAE37BFF7AC345875F71AFD686BBA0" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_Assets" xlink:label="loc_us-gaap_Assets_90AAE37BFF7AC345875F71AFD686BBA0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Assets_90AAE37BFF7AC345875F71AFD686BBA0" xlink:to="lab_us-gaap_Assets_90AAE37BFF7AC345875F71AFD686BBA0" xlink:type="arc" />
    <link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_338BB1277197BC83AFAE71AFD68698D5_terseLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_338BB1277197BC83AFAE71AFD68698D5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">LIABILITIES AND STOCKHOLDERS' EQUITY</link:label>
    <link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_338BB1277197BC83AFAE71AFD68698D5_label_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_338BB1277197BC83AFAE71AFD68698D5" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_338BB1277197BC83AFAE71AFD68698D5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_338BB1277197BC83AFAE71AFD68698D5" xlink:to="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_338BB1277197BC83AFAE71AFD68698D5" xlink:type="arc" />
    <link:label id="lab_us-gaap_LiabilitiesCurrentAbstract_94C6C91D19A2E7E0FDC571AFD68626CA_terseLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesCurrentAbstract_94C6C91D19A2E7E0FDC571AFD68626CA" 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_94C6C91D19A2E7E0FDC571AFD68626CA_label_en-US" xlink:label="lab_us-gaap_LiabilitiesCurrentAbstract_94C6C91D19A2E7E0FDC571AFD68626CA" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LiabilitiesCurrentAbstract" xlink:label="loc_us-gaap_LiabilitiesCurrentAbstract_94C6C91D19A2E7E0FDC571AFD68626CA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_94C6C91D19A2E7E0FDC571AFD68626CA" xlink:to="lab_us-gaap_LiabilitiesCurrentAbstract_94C6C91D19A2E7E0FDC571AFD68626CA" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccountsPayableCurrent_4D897F1BA81BECE2AB0871AFD686B8D6_verboseLabel_en-US" xlink:label="lab_us-gaap_AccountsPayableCurrent_4D897F1BA81BECE2AB0871AFD686B8D6" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Accounts payable</link:label>
    <link:label id="lab_us-gaap_AccountsPayableCurrent_4D897F1BA81BECE2AB0871AFD686B8D6_label_en-US" xlink:label="lab_us-gaap_AccountsPayableCurrent_4D897F1BA81BECE2AB0871AFD686B8D6" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AccountsPayableCurrent" xlink:label="loc_us-gaap_AccountsPayableCurrent_4D897F1BA81BECE2AB0871AFD686B8D6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountsPayableCurrent_4D897F1BA81BECE2AB0871AFD686B8D6" xlink:to="lab_us-gaap_AccountsPayableCurrent_4D897F1BA81BECE2AB0871AFD686B8D6" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtCurrent_D3BDA49CD32F0670B02771AFD6870163_terseLabel_en-US" xlink:label="lab_us-gaap_DebtCurrent_D3BDA49CD32F0670B02771AFD6870163" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Current portion of debt</link:label>
    <link:label id="lab_us-gaap_DebtCurrent_D3BDA49CD32F0670B02771AFD6870163_label_en-US" xlink:label="lab_us-gaap_DebtCurrent_D3BDA49CD32F0670B02771AFD6870163" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DebtCurrent" xlink:label="loc_us-gaap_DebtCurrent_D3BDA49CD32F0670B02771AFD6870163" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtCurrent_D3BDA49CD32F0670B02771AFD6870163" xlink:to="lab_us-gaap_DebtCurrent_D3BDA49CD32F0670B02771AFD6870163" xlink:type="arc" />
    <link:label id="lab_dy_BillingsInExcessOfCostsAndEstimatedEarnings_C913D672AECC0CA7348571AFD687DCE2_terseLabel_en-US" xlink:label="lab_dy_BillingsInExcessOfCostsAndEstimatedEarnings_C913D672AECC0CA7348571AFD687DCE2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Billings in excess of costs and estimated earnings</link:label>
    <link:label id="lab_dy_BillingsInExcessOfCostsAndEstimatedEarnings_C913D672AECC0CA7348571AFD687DCE2_label_en-US" xlink:label="lab_dy_BillingsInExcessOfCostsAndEstimatedEarnings_C913D672AECC0CA7348571AFD687DCE2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Billings in Excess of Costs and Estimated Earnings</link:label>
    <link:label id="lab_dy_BillingsInExcessOfCostsAndEstimatedEarnings_C913D672AECC0CA7348571AFD687DCE2_documentation_en-US" xlink:label="lab_dy_BillingsInExcessOfCostsAndEstimatedEarnings_C913D672AECC0CA7348571AFD687DCE2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Billings in Excess of Costs and Estimated Earnings</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_BillingsInExcessOfCostsAndEstimatedEarnings" xlink:label="loc_dy_BillingsInExcessOfCostsAndEstimatedEarnings_C913D672AECC0CA7348571AFD687DCE2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_BillingsInExcessOfCostsAndEstimatedEarnings_C913D672AECC0CA7348571AFD687DCE2" xlink:to="lab_dy_BillingsInExcessOfCostsAndEstimatedEarnings_C913D672AECC0CA7348571AFD687DCE2" xlink:type="arc" />
    <link:label id="lab_dy_AccruedInsuranceClaimsCurrent_C0A146D505729D070FB571AFD6876813_terseLabel_en-US" xlink:label="lab_dy_AccruedInsuranceClaimsCurrent_C0A146D505729D070FB571AFD6876813" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accrued insurance claims</link:label>
    <link:label id="lab_dy_AccruedInsuranceClaimsCurrent_C0A146D505729D070FB571AFD6876813_label_en-US" xlink:label="lab_dy_AccruedInsuranceClaimsCurrent_C0A146D505729D070FB571AFD6876813" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accrued Insurance Claims, Current</link:label>
    <link:label id="lab_dy_AccruedInsuranceClaimsCurrent_C0A146D505729D070FB571AFD6876813_documentation_en-US" xlink:label="lab_dy_AccruedInsuranceClaimsCurrent_C0A146D505729D070FB571AFD6876813" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Carrying value as of the balance sheet date of obligations incurred through that date and payable to insurance entities and/or claimants to mitigate potential losses from auto liability, general liability, workers compensation, employee group health, and damage claims. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_AccruedInsuranceClaimsCurrent" xlink:label="loc_dy_AccruedInsuranceClaimsCurrent_C0A146D505729D070FB571AFD6876813" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_AccruedInsuranceClaimsCurrent_C0A146D505729D070FB571AFD6876813" xlink:to="lab_dy_AccruedInsuranceClaimsCurrent_C0A146D505729D070FB571AFD6876813" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherAccruedLiabilitiesCurrent_BBADE170EF14B0C69C7B71AFD68798D5_terseLabel_en-US" xlink:label="lab_us-gaap_OtherAccruedLiabilitiesCurrent_BBADE170EF14B0C69C7B71AFD68798D5" 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_BBADE170EF14B0C69C7B71AFD68798D5_label_en-US" xlink:label="lab_us-gaap_OtherAccruedLiabilitiesCurrent_BBADE170EF14B0C69C7B71AFD68798D5" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherAccruedLiabilitiesCurrent" xlink:label="loc_us-gaap_OtherAccruedLiabilitiesCurrent_BBADE170EF14B0C69C7B71AFD68798D5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherAccruedLiabilitiesCurrent_BBADE170EF14B0C69C7B71AFD68798D5" xlink:to="lab_us-gaap_OtherAccruedLiabilitiesCurrent_BBADE170EF14B0C69C7B71AFD68798D5" xlink:type="arc" />
    <link:label id="lab_us-gaap_LiabilitiesCurrent_1F0AB11CCEE1353E54B971AFD6875027_totalLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesCurrent_1F0AB11CCEE1353E54B971AFD6875027" 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_1F0AB11CCEE1353E54B971AFD6875027_label_en-US" xlink:label="lab_us-gaap_LiabilitiesCurrent_1F0AB11CCEE1353E54B971AFD6875027" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:label="loc_us-gaap_LiabilitiesCurrent_1F0AB11CCEE1353E54B971AFD6875027" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesCurrent_1F0AB11CCEE1353E54B971AFD6875027" xlink:to="lab_us-gaap_LiabilitiesCurrent_1F0AB11CCEE1353E54B971AFD6875027" xlink:type="arc" />
    <link:label id="lab_us-gaap_LongTermDebtAndCapitalLeaseObligations_487C3E4F82C66E7AA74171AFD687D8C3_verboseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtAndCapitalLeaseObligations_487C3E4F82C66E7AA74171AFD687D8C3" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Long-term debt (including debt premium of $2.9 million and $3.2 million at April 25, 2015 and July 26, 2014, respectively)</link:label>
    <link:label id="lab_us-gaap_LongTermDebtAndCapitalLeaseObligations_487C3E4F82C66E7AA74171AFD687D8C3_label_en-US" xlink:label="lab_us-gaap_LongTermDebtAndCapitalLeaseObligations_487C3E4F82C66E7AA74171AFD687D8C3" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligations" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_487C3E4F82C66E7AA74171AFD687D8C3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_487C3E4F82C66E7AA74171AFD687D8C3" xlink:to="lab_us-gaap_LongTermDebtAndCapitalLeaseObligations_487C3E4F82C66E7AA74171AFD687D8C3" xlink:type="arc" />
    <link:label id="lab_dy_AccruedInsuranceClaimsNoncurrent_FB85D295F59B9F1439CE71AFD6871319_terseLabel_en-US" xlink:label="lab_dy_AccruedInsuranceClaimsNoncurrent_FB85D295F59B9F1439CE71AFD6871319" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accrued insurance claims</link:label>
    <link:label id="lab_dy_AccruedInsuranceClaimsNoncurrent_FB85D295F59B9F1439CE71AFD6871319_label_en-US" xlink:label="lab_dy_AccruedInsuranceClaimsNoncurrent_FB85D295F59B9F1439CE71AFD6871319" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accrued Insurance, Claims, Noncurrent</link:label>
    <link:label id="lab_dy_AccruedInsuranceClaimsNoncurrent_FB85D295F59B9F1439CE71AFD6871319_documentation_en-US" xlink:label="lab_dy_AccruedInsuranceClaimsNoncurrent_FB85D295F59B9F1439CE71AFD6871319" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Carrying value as of the balance sheet date of obligations incurred through that date and payable to insurance entities and/or claimants to mitigate potential losses from auto liability, general liability, workers compensation, employee group health, and damage claims. Used to reflect the Noncurrent portion of the liabilities.</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_AccruedInsuranceClaimsNoncurrent" xlink:label="loc_dy_AccruedInsuranceClaimsNoncurrent_FB85D295F59B9F1439CE71AFD6871319" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_AccruedInsuranceClaimsNoncurrent_FB85D295F59B9F1439CE71AFD6871319" xlink:to="lab_dy_AccruedInsuranceClaimsNoncurrent_FB85D295F59B9F1439CE71AFD6871319" xlink:type="arc" />
    <link:label id="lab_us-gaap_DeferredTaxLiabilitiesNoncurrent_3AAD3B30F28A18CC4D0171AFD687573E_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredTaxLiabilitiesNoncurrent_3AAD3B30F28A18CC4D0171AFD687573E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deferred tax liabilities, net non-current</link:label>
    <link:label id="lab_us-gaap_DeferredTaxLiabilitiesNoncurrent_3AAD3B30F28A18CC4D0171AFD687573E_label_en-US" xlink:label="lab_us-gaap_DeferredTaxLiabilitiesNoncurrent_3AAD3B30F28A18CC4D0171AFD687573E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred Tax Liabilities, Net, Noncurrent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DeferredTaxLiabilitiesNoncurrent" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesNoncurrent_3AAD3B30F28A18CC4D0171AFD687573E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DeferredTaxLiabilitiesNoncurrent_3AAD3B30F28A18CC4D0171AFD687573E" xlink:to="lab_us-gaap_DeferredTaxLiabilitiesNoncurrent_3AAD3B30F28A18CC4D0171AFD687573E" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherLiabilitiesNoncurrent_8543CDB4E24F0CDFFA1671AFD6870999_terseLabel_en-US" xlink:label="lab_us-gaap_OtherLiabilitiesNoncurrent_8543CDB4E24F0CDFFA1671AFD6870999" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other liabilities</link:label>
    <link:label id="lab_us-gaap_OtherLiabilitiesNoncurrent_8543CDB4E24F0CDFFA1671AFD6870999_label_en-US" xlink:label="lab_us-gaap_OtherLiabilitiesNoncurrent_8543CDB4E24F0CDFFA1671AFD6870999" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherLiabilitiesNoncurrent" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_8543CDB4E24F0CDFFA1671AFD6870999" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherLiabilitiesNoncurrent_8543CDB4E24F0CDFFA1671AFD6870999" xlink:to="lab_us-gaap_OtherLiabilitiesNoncurrent_8543CDB4E24F0CDFFA1671AFD6870999" xlink:type="arc" />
    <link:label id="lab_us-gaap_Liabilities_B688F1C2C8170F8C1AEB71AFD6879E78_totalLabel_en-US" xlink:label="lab_us-gaap_Liabilities_B688F1C2C8170F8C1AEB71AFD6879E78" 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_B688F1C2C8170F8C1AEB71AFD6879E78_label_en-US" xlink:label="lab_us-gaap_Liabilities_B688F1C2C8170F8C1AEB71AFD6879E78" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_Liabilities" xlink:label="loc_us-gaap_Liabilities_B688F1C2C8170F8C1AEB71AFD6879E78" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Liabilities_B688F1C2C8170F8C1AEB71AFD6879E78" xlink:to="lab_us-gaap_Liabilities_B688F1C2C8170F8C1AEB71AFD6879E78" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommitmentsAndContingencies_73CAD6DABC0D2404A19B71AFD687EC99_terseLabel_en-US" xlink:label="lab_us-gaap_CommitmentsAndContingencies_73CAD6DABC0D2404A19B71AFD687EC99" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">COMMITMENTS AND CONTINGENCIES, Note 17</link:label>
    <link:label id="lab_us-gaap_CommitmentsAndContingencies_73CAD6DABC0D2404A19B71AFD687EC99_label_en-US" xlink:label="lab_us-gaap_CommitmentsAndContingencies_73CAD6DABC0D2404A19B71AFD687EC99" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CommitmentsAndContingencies" xlink:label="loc_us-gaap_CommitmentsAndContingencies_73CAD6DABC0D2404A19B71AFD687EC99" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommitmentsAndContingencies_73CAD6DABC0D2404A19B71AFD687EC99" xlink:to="lab_us-gaap_CommitmentsAndContingencies_73CAD6DABC0D2404A19B71AFD687EC99" xlink:type="arc" />
    <link:label id="lab_us-gaap_StockholdersEquityAbstract_5DB7285510B8D7EE50DF71AFD687CFCE_verboseLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquityAbstract_5DB7285510B8D7EE50DF71AFD687CFCE" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Stockholders' equity:</link:label>
    <link:label id="lab_us-gaap_StockholdersEquityAbstract_5DB7285510B8D7EE50DF71AFD687CFCE_label_en-US" xlink:label="lab_us-gaap_StockholdersEquityAbstract_5DB7285510B8D7EE50DF71AFD687CFCE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stockholders' Equity Attributable to Parent [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StockholdersEquityAbstract" xlink:label="loc_us-gaap_StockholdersEquityAbstract_5DB7285510B8D7EE50DF71AFD687CFCE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockholdersEquityAbstract_5DB7285510B8D7EE50DF71AFD687CFCE" xlink:to="lab_us-gaap_StockholdersEquityAbstract_5DB7285510B8D7EE50DF71AFD687CFCE" xlink:type="arc" />
    <link:label id="lab_us-gaap_PreferredStockValue_FAF0DD86303EB2B026AF71AFD68844EF_terseLabel_en-US" xlink:label="lab_us-gaap_PreferredStockValue_FAF0DD86303EB2B026AF71AFD68844EF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Preferred stock, par value $1.00 per share: 1,000,000 shares authorized: no shares issued and outstanding</link:label>
    <link:label id="lab_us-gaap_PreferredStockValue_FAF0DD86303EB2B026AF71AFD68844EF_label_en-US" xlink:label="lab_us-gaap_PreferredStockValue_FAF0DD86303EB2B026AF71AFD68844EF" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PreferredStockValue" xlink:label="loc_us-gaap_PreferredStockValue_FAF0DD86303EB2B026AF71AFD68844EF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PreferredStockValue_FAF0DD86303EB2B026AF71AFD68844EF" xlink:to="lab_us-gaap_PreferredStockValue_FAF0DD86303EB2B026AF71AFD68844EF" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommonStockValue_60E012E008DDEB2FC46271AFD68886DD_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockValue_60E012E008DDEB2FC46271AFD68886DD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Common stock, par value $0.33 1/3 per share: 150,000,000 shares authorized: 34,076,566 and 33,990,589 issued and outstanding, respectively</link:label>
    <link:label id="lab_us-gaap_CommonStockValue_60E012E008DDEB2FC46271AFD68886DD_label_en-US" xlink:label="lab_us-gaap_CommonStockValue_60E012E008DDEB2FC46271AFD68886DD" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CommonStockValue" xlink:label="loc_us-gaap_CommonStockValue_60E012E008DDEB2FC46271AFD68886DD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockValue_60E012E008DDEB2FC46271AFD68886DD" xlink:to="lab_us-gaap_CommonStockValue_60E012E008DDEB2FC46271AFD68886DD" xlink:type="arc" />
    <link:label id="lab_us-gaap_AdditionalPaidInCapitalCommonStock_B5A5FD94EF665748434D71AFD688030E_terseLabel_en-US" xlink:label="lab_us-gaap_AdditionalPaidInCapitalCommonStock_B5A5FD94EF665748434D71AFD688030E" 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_B5A5FD94EF665748434D71AFD688030E_label_en-US" xlink:label="lab_us-gaap_AdditionalPaidInCapitalCommonStock_B5A5FD94EF665748434D71AFD688030E" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AdditionalPaidInCapitalCommonStock" xlink:label="loc_us-gaap_AdditionalPaidInCapitalCommonStock_B5A5FD94EF665748434D71AFD688030E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AdditionalPaidInCapitalCommonStock_B5A5FD94EF665748434D71AFD688030E" xlink:to="lab_us-gaap_AdditionalPaidInCapitalCommonStock_B5A5FD94EF665748434D71AFD688030E" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_FCF311456597E22B3B2A71AFD688BCEF_terseLabel_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_FCF311456597E22B3B2A71AFD688BCEF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accumulated other comprehensive loss</link:label>
    <link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_FCF311456597E22B3B2A71AFD688BCEF_label_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_FCF311456597E22B3B2A71AFD688BCEF" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_FCF311456597E22B3B2A71AFD688BCEF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_FCF311456597E22B3B2A71AFD688BCEF" xlink:to="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_FCF311456597E22B3B2A71AFD688BCEF" xlink:type="arc" />
    <link:label id="lab_us-gaap_RetainedEarningsAccumulatedDeficit_53B6DC4C6B989D7D5BD171AFD68863F3_terseLabel_en-US" xlink:label="lab_us-gaap_RetainedEarningsAccumulatedDeficit_53B6DC4C6B989D7D5BD171AFD68863F3" 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_53B6DC4C6B989D7D5BD171AFD68863F3_label_en-US" xlink:label="lab_us-gaap_RetainedEarningsAccumulatedDeficit_53B6DC4C6B989D7D5BD171AFD68863F3" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_53B6DC4C6B989D7D5BD171AFD68863F3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RetainedEarningsAccumulatedDeficit_53B6DC4C6B989D7D5BD171AFD68863F3" xlink:to="lab_us-gaap_RetainedEarningsAccumulatedDeficit_53B6DC4C6B989D7D5BD171AFD68863F3" xlink:type="arc" />
    <link:label id="lab_us-gaap_StockholdersEquity_E7575FEEC02503BA831671AFD68828F9_totalLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquity_E7575FEEC02503BA831671AFD68828F9" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total stockholders' equity</link:label>
    <link:label id="lab_us-gaap_StockholdersEquity_E7575FEEC02503BA831671AFD68828F9_label_en-US" xlink:label="lab_us-gaap_StockholdersEquity_E7575FEEC02503BA831671AFD68828F9" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="loc_us-gaap_StockholdersEquity_E7575FEEC02503BA831671AFD68828F9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockholdersEquity_E7575FEEC02503BA831671AFD68828F9" xlink:to="lab_us-gaap_StockholdersEquity_E7575FEEC02503BA831671AFD68828F9" xlink:type="arc" />
    <link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquity_065C0FB3EEA2712A785071AFD688F0F8_totalLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquity_065C0FB3EEA2712A785071AFD688F0F8" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total liabilities and stockholders' equity</link:label>
    <link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquity_065C0FB3EEA2712A785071AFD688F0F8_label_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquity_065C0FB3EEA2712A785071AFD688F0F8" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_065C0FB3EEA2712A785071AFD688F0F8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_065C0FB3EEA2712A785071AFD688F0F8" xlink:to="lab_us-gaap_LiabilitiesAndStockholdersEquity_065C0FB3EEA2712A785071AFD688F0F8" xlink:type="arc" />
    <link:label id="lab_us-gaap_RelatedPartyTransactionsAbstract_FF2AF15B572CAF5742B4700C46C4254E_label_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionsAbstract_FF2AF15B572CAF5742B4700C46C4254E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Related Party Transactions [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RelatedPartyTransactionsAbstract" xlink:label="loc_us-gaap_RelatedPartyTransactionsAbstract_FF2AF15B572CAF5742B4700C46C4254E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RelatedPartyTransactionsAbstract_FF2AF15B572CAF5742B4700C46C4254E" xlink:to="lab_us-gaap_RelatedPartyTransactionsAbstract_FF2AF15B572CAF5742B4700C46C4254E" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfRelatedPartyTransactionsTableTextBlock_D80C89283E80C537E758700C46D38070_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfRelatedPartyTransactionsTableTextBlock_D80C89283E80C537E758700C46D38070" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Related Party Transactions</link:label>
    <link:label id="lab_us-gaap_ScheduleOfRelatedPartyTransactionsTableTextBlock_D80C89283E80C537E758700C46D38070_label_en-US" xlink:label="lab_us-gaap_ScheduleOfRelatedPartyTransactionsTableTextBlock_D80C89283E80C537E758700C46D38070" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Related Party Transactions [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsTableTextBlock_D80C89283E80C537E758700C46D38070" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsTableTextBlock_D80C89283E80C537E758700C46D38070" xlink:to="lab_us-gaap_ScheduleOfRelatedPartyTransactionsTableTextBlock_D80C89283E80C537E758700C46D38070" xlink:type="arc" />
    <link:label id="lab_dy_AccruedInsuranceClaimsAbstract_7FCEFD0E5933939D98D0700C46088A6B_label_en-US" xlink:label="lab_dy_AccruedInsuranceClaimsAbstract_7FCEFD0E5933939D98D0700C46088A6B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accrued Insurance Claims [Abstract]</link:label>
    <link:label id="lab_dy_AccruedInsuranceClaimsAbstract_7FCEFD0E5933939D98D0700C46088A6B_documentation_en-US" xlink:label="lab_dy_AccruedInsuranceClaimsAbstract_7FCEFD0E5933939D98D0700C46088A6B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US" />
    <link:loc xlink:href="dy-20150425.xsd#dy_AccruedInsuranceClaimsAbstract" xlink:label="loc_dy_AccruedInsuranceClaimsAbstract_7FCEFD0E5933939D98D0700C46088A6B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_AccruedInsuranceClaimsAbstract_7FCEFD0E5933939D98D0700C46088A6B" xlink:to="lab_dy_AccruedInsuranceClaimsAbstract_7FCEFD0E5933939D98D0700C46088A6B" xlink:type="arc" />
    <link:label id="lab_dy_AccruedInsuranceClaimsDisclosureTextBlock_6D3691A2DF1B26CE47A1700C4608ABE9_terseLabel_en-US" xlink:label="lab_dy_AccruedInsuranceClaimsDisclosureTextBlock_6D3691A2DF1B26CE47A1700C4608ABE9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accrued Insurance Claims</link:label>
    <link:label id="lab_dy_AccruedInsuranceClaimsDisclosureTextBlock_6D3691A2DF1B26CE47A1700C4608ABE9_label_en-US" xlink:label="lab_dy_AccruedInsuranceClaimsDisclosureTextBlock_6D3691A2DF1B26CE47A1700C4608ABE9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accrued Insurance Claims Disclosure [Text Block]</link:label>
    <link:label id="lab_dy_AccruedInsuranceClaimsDisclosureTextBlock_6D3691A2DF1B26CE47A1700C4608ABE9_documentation_en-US" xlink:label="lab_dy_AccruedInsuranceClaimsDisclosureTextBlock_6D3691A2DF1B26CE47A1700C4608ABE9" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The entire disclosure for accrued insurance claims</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_AccruedInsuranceClaimsDisclosureTextBlock" xlink:label="loc_dy_AccruedInsuranceClaimsDisclosureTextBlock_6D3691A2DF1B26CE47A1700C4608ABE9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_AccruedInsuranceClaimsDisclosureTextBlock_6D3691A2DF1B26CE47A1700C4608ABE9" xlink:to="lab_dy_AccruedInsuranceClaimsDisclosureTextBlock_6D3691A2DF1B26CE47A1700C4608ABE9" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_F4D8E2AC75EE820BEB31700C46C4DA53_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_F4D8E2AC75EE820BEB31700C46C4DA53" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Related Party Transactions, by Related Party [Table]</link:label>
    <link:label id="lab_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_F4D8E2AC75EE820BEB31700C46C4DA53_label_en-US" xlink:label="lab_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_F4D8E2AC75EE820BEB31700C46C4DA53" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Related Party Transactions, by Related Party [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_F4D8E2AC75EE820BEB31700C46C4DA53" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_F4D8E2AC75EE820BEB31700C46C4DA53" xlink:to="lab_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_F4D8E2AC75EE820BEB31700C46C4DA53" xlink:type="arc" />
    <link:label id="lab_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_FF2C0FAFE3C5B78BFF13700C46C4F8F0_terseLabel_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_FF2C0FAFE3C5B78BFF13700C46C4F8F0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Related Party [Axis]</link:label>
    <link:label id="lab_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_FF2C0FAFE3C5B78BFF13700C46C4F8F0_label_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_FF2C0FAFE3C5B78BFF13700C46C4F8F0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Related Party [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_FF2C0FAFE3C5B78BFF13700C46C4F8F0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_FF2C0FAFE3C5B78BFF13700C46C4F8F0" xlink:to="lab_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_FF2C0FAFE3C5B78BFF13700C46C4F8F0" xlink:type="arc" />
    <link:label id="lab_us-gaap_RelatedPartyDomain_5656F3985DCE47A32E0C700C46C42CE7_terseLabel_en-US" xlink:label="lab_us-gaap_RelatedPartyDomain_5656F3985DCE47A32E0C700C46C42CE7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Related Party [Domain]</link:label>
    <link:label id="lab_us-gaap_RelatedPartyDomain_5656F3985DCE47A32E0C700C46C42CE7_label_en-US" xlink:label="lab_us-gaap_RelatedPartyDomain_5656F3985DCE47A32E0C700C46C42CE7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Related Party [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RelatedPartyDomain" xlink:label="loc_us-gaap_RelatedPartyDomain_5656F3985DCE47A32E0C700C46C42CE7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RelatedPartyDomain_5656F3985DCE47A32E0C700C46C42CE7" xlink:to="lab_us-gaap_RelatedPartyDomain_5656F3985DCE47A32E0C700C46C42CE7" xlink:type="arc" />
    <link:label id="lab_dy_RealpropertyandequipmentleasesMember_A15CDDB25ACA1E5C5FD3700C46C43C78_terseLabel_en-US" xlink:label="lab_dy_RealpropertyandequipmentleasesMember_A15CDDB25ACA1E5C5FD3700C46C43C78" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Real property and equipment leases</link:label>
    <link:label id="lab_dy_RealpropertyandequipmentleasesMember_A15CDDB25ACA1E5C5FD3700C46C43C78_label_en-US" xlink:label="lab_dy_RealpropertyandequipmentleasesMember_A15CDDB25ACA1E5C5FD3700C46C43C78" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Real property and equipment leases [Member]</link:label>
    <link:label id="lab_dy_RealpropertyandequipmentleasesMember_A15CDDB25ACA1E5C5FD3700C46C43C78_documentation_en-US" xlink:label="lab_dy_RealpropertyandequipmentleasesMember_A15CDDB25ACA1E5C5FD3700C46C43C78" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Real property and equipment leases [Member]</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_RealpropertyandequipmentleasesMember" xlink:label="loc_dy_RealpropertyandequipmentleasesMember_A15CDDB25ACA1E5C5FD3700C46C43C78" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_RealpropertyandequipmentleasesMember_A15CDDB25ACA1E5C5FD3700C46C43C78" xlink:to="lab_dy_RealpropertyandequipmentleasesMember_A15CDDB25ACA1E5C5FD3700C46C43C78" xlink:type="arc" />
    <link:label id="lab_dy_SubcontractorsandmaterialsexpenseMember_DC0DFFD7625D58E531AE700C46C40EFF_terseLabel_en-US" xlink:label="lab_dy_SubcontractorsandmaterialsexpenseMember_DC0DFFD7625D58E531AE700C46C40EFF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Subcontractors and materials expense</link:label>
    <link:label id="lab_dy_SubcontractorsandmaterialsexpenseMember_DC0DFFD7625D58E531AE700C46C40EFF_label_en-US" xlink:label="lab_dy_SubcontractorsandmaterialsexpenseMember_DC0DFFD7625D58E531AE700C46C40EFF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Subcontractors and materials expense [Member]</link:label>
    <link:label id="lab_dy_SubcontractorsandmaterialsexpenseMember_DC0DFFD7625D58E531AE700C46C40EFF_documentation_en-US" xlink:label="lab_dy_SubcontractorsandmaterialsexpenseMember_DC0DFFD7625D58E531AE700C46C40EFF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Subcontractors and materials expense [Member]</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_SubcontractorsandmaterialsexpenseMember" xlink:label="loc_dy_SubcontractorsandmaterialsexpenseMember_DC0DFFD7625D58E531AE700C46C40EFF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_SubcontractorsandmaterialsexpenseMember_DC0DFFD7625D58E531AE700C46C40EFF" xlink:to="lab_dy_SubcontractorsandmaterialsexpenseMember_DC0DFFD7625D58E531AE700C46C40EFF" xlink:type="arc" />
    <link:label id="lab_us-gaap_RelatedPartyTransactionLineItems_F35ED8F4D7FB82E68F47700C46C4B596_terseLabel_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionLineItems_F35ED8F4D7FB82E68F47700C46C4B596" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Related Party Transaction [Line Items]</link:label>
    <link:label id="lab_us-gaap_RelatedPartyTransactionLineItems_F35ED8F4D7FB82E68F47700C46C4B596_label_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionLineItems_F35ED8F4D7FB82E68F47700C46C4B596" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Related Party Transaction [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RelatedPartyTransactionLineItems" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_F35ED8F4D7FB82E68F47700C46C4B596" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_F35ED8F4D7FB82E68F47700C46C4B596" xlink:to="lab_us-gaap_RelatedPartyTransactionLineItems_F35ED8F4D7FB82E68F47700C46C4B596" xlink:type="arc" />
    <link:label id="lab_us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty_8AC1BCABB141BAA0D047700C46C4372F_terseLabel_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty_8AC1BCABB141BAA0D047700C46C4372F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total expense under lease agreements</link:label>
    <link:label id="lab_us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty_8AC1BCABB141BAA0D047700C46C4372F_label_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty_8AC1BCABB141BAA0D047700C46C4372F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Related Party Transaction, Expenses from Transactions with Related Party</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty" xlink:label="loc_us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty_8AC1BCABB141BAA0D047700C46C4372F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty_8AC1BCABB141BAA0D047700C46C4372F" xlink:to="lab_us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty_8AC1BCABB141BAA0D047700C46C4372F" xlink:type="arc" />
    <link:label id="lab_us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_F2B5196D8FB54D7000F0700C46561526_terseLabel_en-US" xlink:label="lab_us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_F2B5196D8FB54D7000F0700C46561526" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Stock-Based Awards</link:label>
    <link:label id="lab_us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_F2B5196D8FB54D7000F0700C46561526_label_en-US" xlink:label="lab_us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_F2B5196D8FB54D7000F0700C46561526" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock" xlink:label="loc_us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_F2B5196D8FB54D7000F0700C46561526" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_F2B5196D8FB54D7000F0700C46561526" xlink:to="lab_us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_F2B5196D8FB54D7000F0700C46561526" xlink:type="arc" />
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentAbstract_C1AF4C70B5406B036CDB700C47310950_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentAbstract_C1AF4C70B5406B036CDB700C47310950" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property, Plant and Equipment [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PropertyPlantAndEquipmentAbstract" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAbstract_C1AF4C70B5406B036CDB700C47310950" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentAbstract_C1AF4C70B5406B036CDB700C47310950" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentAbstract_C1AF4C70B5406B036CDB700C47310950" xlink:type="arc" />
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentTextBlock_2AC1E403A82FCBBF48B1700C47317B60_terseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentTextBlock_2AC1E403A82FCBBF48B1700C47317B60" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Property and Equipment</link:label>
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentTextBlock_2AC1E403A82FCBBF48B1700C47317B60_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentTextBlock_2AC1E403A82FCBBF48B1700C47317B60" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property, Plant and Equipment [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTextBlock" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTextBlock_2AC1E403A82FCBBF48B1700C47317B60" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTextBlock_2AC1E403A82FCBBF48B1700C47317B60" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentTextBlock_2AC1E403A82FCBBF48B1700C47317B60" xlink:type="arc" />
    <link:label id="lab_us-gaap_ContractorsAbstract_5DE5A6518020E488D720700C461876FD_label_en-US" xlink:label="lab_us-gaap_ContractorsAbstract_5DE5A6518020E488D720700C461876FD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Contractors [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ContractorsAbstract" xlink:label="loc_us-gaap_ContractorsAbstract_5DE5A6518020E488D720700C461876FD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ContractorsAbstract_5DE5A6518020E488D720700C461876FD" xlink:to="lab_us-gaap_ContractorsAbstract_5DE5A6518020E488D720700C461876FD" xlink:type="arc" />
    <link:label id="lab_dy_CostsAndEstimatedEarningsInExcessOfBillingsNetTableTextBlock_2220047B89690CAE11E6700C4618951F_terseLabel_en-US" xlink:label="lab_dy_CostsAndEstimatedEarningsInExcessOfBillingsNetTableTextBlock_2220047B89690CAE11E6700C4618951F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Costs and Estimated Earnings in Excess of Billings, Net</link:label>
    <link:label id="lab_dy_CostsAndEstimatedEarningsInExcessOfBillingsNetTableTextBlock_2220047B89690CAE11E6700C4618951F_label_en-US" xlink:label="lab_dy_CostsAndEstimatedEarningsInExcessOfBillingsNetTableTextBlock_2220047B89690CAE11E6700C4618951F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Costs and Estimated Earnings in Excess of Billings, Net [Table Text Block]</link:label>
    <link:label id="lab_dy_CostsAndEstimatedEarningsInExcessOfBillingsNetTableTextBlock_2220047B89690CAE11E6700C4618951F_documentation_en-US" xlink:label="lab_dy_CostsAndEstimatedEarningsInExcessOfBillingsNetTableTextBlock_2220047B89690CAE11E6700C4618951F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Tabular disclosure of costs and estimated earnings in excess of billings, net.</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_CostsAndEstimatedEarningsInExcessOfBillingsNetTableTextBlock" xlink:label="loc_dy_CostsAndEstimatedEarningsInExcessOfBillingsNetTableTextBlock_2220047B89690CAE11E6700C4618951F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_CostsAndEstimatedEarningsInExcessOfBillingsNetTableTextBlock_2220047B89690CAE11E6700C4618951F" xlink:to="lab_dy_CostsAndEstimatedEarningsInExcessOfBillingsNetTableTextBlock_2220047B89690CAE11E6700C4618951F" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccountingPoliciesAbstract_0B2F102E3932716C950978A06334347C_label_en-US" xlink:label="lab_us-gaap_AccountingPoliciesAbstract_0B2F102E3932716C950978A06334347C" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AccountingPoliciesAbstract" xlink:label="loc_us-gaap_AccountingPoliciesAbstract_0B2F102E3932716C950978A06334347C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_0B2F102E3932716C950978A06334347C" xlink:to="lab_us-gaap_AccountingPoliciesAbstract_0B2F102E3932716C950978A06334347C" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_F7ECF20E5082D14DE13178A06335C30D_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_F7ECF20E5082D14DE13178A06335C30D" 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_F7ECF20E5082D14DE13178A06335C30D_label_en-US" xlink:label="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_F7ECF20E5082D14DE13178A06335C30D" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_F7ECF20E5082D14DE13178A06335C30D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_F7ECF20E5082D14DE13178A06335C30D" xlink:to="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_F7ECF20E5082D14DE13178A06335C30D" xlink:type="arc" />
    <link:label id="lab_us-gaap_StatementGeographicalAxis_2474D04BBF5B07B6A52C78A0633664E4_terseLabel_en-US" xlink:label="lab_us-gaap_StatementGeographicalAxis_2474D04BBF5B07B6A52C78A0633664E4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Geographical [Axis]</link:label>
    <link:label id="lab_us-gaap_StatementGeographicalAxis_2474D04BBF5B07B6A52C78A0633664E4_label_en-US" xlink:label="lab_us-gaap_StatementGeographicalAxis_2474D04BBF5B07B6A52C78A0633664E4" 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/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StatementGeographicalAxis" xlink:label="loc_us-gaap_StatementGeographicalAxis_2474D04BBF5B07B6A52C78A0633664E4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementGeographicalAxis_2474D04BBF5B07B6A52C78A0633664E4" xlink:to="lab_us-gaap_StatementGeographicalAxis_2474D04BBF5B07B6A52C78A0633664E4" xlink:type="arc" />
    <link:label id="lab_us-gaap_SegmentGeographicalDomain_3D4AADBBE3F232DE9DEB78A063368E9D_terseLabel_en-US" xlink:label="lab_us-gaap_SegmentGeographicalDomain_3D4AADBBE3F232DE9DEB78A063368E9D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Geographical [Domain]</link:label>
    <link:label id="lab_us-gaap_SegmentGeographicalDomain_3D4AADBBE3F232DE9DEB78A063368E9D_label_en-US" xlink:label="lab_us-gaap_SegmentGeographicalDomain_3D4AADBBE3F232DE9DEB78A063368E9D" 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/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SegmentGeographicalDomain" xlink:label="loc_us-gaap_SegmentGeographicalDomain_3D4AADBBE3F232DE9DEB78A063368E9D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SegmentGeographicalDomain_3D4AADBBE3F232DE9DEB78A063368E9D" xlink:to="lab_us-gaap_SegmentGeographicalDomain_3D4AADBBE3F232DE9DEB78A063368E9D" xlink:type="arc" />
    <link:label id="lab_country_CA_140F44F87B6D13534D2678A06336B260_terseLabel_en-US" xlink:label="lab_country_CA_140F44F87B6D13534D2678A06336B260" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Canada</link:label>
    <link:label id="lab_country_CA_140F44F87B6D13534D2678A06336B260_label_en-US" xlink:label="lab_country_CA_140F44F87B6D13534D2678A06336B260" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">CANADA</link:label>
    <link:loc xlink:href="http://xbrl.sec.gov/country/2013/country-2013-01-31.xsd#country_CA" xlink:label="loc_country_CA_140F44F87B6D13534D2678A06336B260" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_country_CA_140F44F87B6D13534D2678A06336B260" xlink:to="lab_country_CA_140F44F87B6D13534D2678A06336B260" xlink:type="arc" />
    <link:label id="lab_us-gaap_LongtermDebtTypeAxis_CB2BD1F32CB167FEDA7078A06336C238_terseLabel_en-US" xlink:label="lab_us-gaap_LongtermDebtTypeAxis_CB2BD1F32CB167FEDA7078A06336C238" 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_CB2BD1F32CB167FEDA7078A06336C238_label_en-US" xlink:label="lab_us-gaap_LongtermDebtTypeAxis_CB2BD1F32CB167FEDA7078A06336C238" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LongtermDebtTypeAxis" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_CB2BD1F32CB167FEDA7078A06336C238" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_CB2BD1F32CB167FEDA7078A06336C238" xlink:to="lab_us-gaap_LongtermDebtTypeAxis_CB2BD1F32CB167FEDA7078A06336C238" xlink:type="arc" />
    <link:label id="lab_us-gaap_LongtermDebtTypeDomain_8E621C48A8477C2A8FE778A063373451_terseLabel_en-US" xlink:label="lab_us-gaap_LongtermDebtTypeDomain_8E621C48A8477C2A8FE778A063373451" 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_8E621C48A8477C2A8FE778A063373451_label_en-US" xlink:label="lab_us-gaap_LongtermDebtTypeDomain_8E621C48A8477C2A8FE778A063373451" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_8E621C48A8477C2A8FE778A063373451" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_8E621C48A8477C2A8FE778A063373451" xlink:to="lab_us-gaap_LongtermDebtTypeDomain_8E621C48A8477C2A8FE778A063373451" xlink:type="arc" />
    <link:label id="lab_us-gaap_SeniorSubordinatedNotesMember_505B11FE2D32A97BD2D178A063371CCC_terseLabel_en-US" xlink:label="lab_us-gaap_SeniorSubordinatedNotesMember_505B11FE2D32A97BD2D178A063371CCC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Senior Subordinated Notes</link:label>
    <link:label id="lab_us-gaap_SeniorSubordinatedNotesMember_505B11FE2D32A97BD2D178A063371CCC_label_en-US" xlink:label="lab_us-gaap_SeniorSubordinatedNotesMember_505B11FE2D32A97BD2D178A063371CCC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Senior Subordinated Notes [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SeniorSubordinatedNotesMember" xlink:label="loc_us-gaap_SeniorSubordinatedNotesMember_505B11FE2D32A97BD2D178A063371CCC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SeniorSubordinatedNotesMember_505B11FE2D32A97BD2D178A063371CCC" xlink:to="lab_us-gaap_SeniorSubordinatedNotesMember_505B11FE2D32A97BD2D178A063371CCC" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentAxis_AD83EAE6C2457237580878A063371CBF_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentAxis_AD83EAE6C2457237580878A063371CBF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt Instrument [Axis]</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentAxis_AD83EAE6C2457237580878A063371CBF_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentAxis_AD83EAE6C2457237580878A063371CBF" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:label="loc_us-gaap_DebtInstrumentAxis_AD83EAE6C2457237580878A063371CBF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentAxis_AD83EAE6C2457237580878A063371CBF" xlink:to="lab_us-gaap_DebtInstrumentAxis_AD83EAE6C2457237580878A063371CBF" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentNameDomain_FF94CD0AC41CF94E6DD178A06337BFE0_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentNameDomain_FF94CD0AC41CF94E6DD178A06337BFE0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt Instrument, Name [Domain]</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentNameDomain_FF94CD0AC41CF94E6DD178A06337BFE0_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentNameDomain_FF94CD0AC41CF94E6DD178A06337BFE0" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_FF94CD0AC41CF94E6DD178A06337BFE0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_FF94CD0AC41CF94E6DD178A06337BFE0" xlink:to="lab_us-gaap_DebtInstrumentNameDomain_FF94CD0AC41CF94E6DD178A06337BFE0" xlink:type="arc" />
    <link:label id="lab_dy_SevenPointOneTwoFivePercentSeniorSubordinatedNotesDue2021Member_FD80F94C51DB154E6F7578A0633745F2_terseLabel_en-US" xlink:label="lab_dy_SevenPointOneTwoFivePercentSeniorSubordinatedNotesDue2021Member_FD80F94C51DB154E6F7578A0633745F2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">7.125% Senior Subordinated Notes Due 2021</link:label>
    <link:label id="lab_dy_SevenPointOneTwoFivePercentSeniorSubordinatedNotesDue2021Member_FD80F94C51DB154E6F7578A0633745F2_label_en-US" xlink:label="lab_dy_SevenPointOneTwoFivePercentSeniorSubordinatedNotesDue2021Member_FD80F94C51DB154E6F7578A0633745F2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Seven Point One Two Five Percent Senior Subordinated Notes Due 2021 [Member]</link:label>
    <link:label id="lab_dy_SevenPointOneTwoFivePercentSeniorSubordinatedNotesDue2021Member_FD80F94C51DB154E6F7578A0633745F2_documentation_en-US" xlink:label="lab_dy_SevenPointOneTwoFivePercentSeniorSubordinatedNotesDue2021Member_FD80F94C51DB154E6F7578A0633745F2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">7.125% Senior Subordinated Notes Due 2021 [Member]</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_SevenPointOneTwoFivePercentSeniorSubordinatedNotesDue2021Member" xlink:label="loc_dy_SevenPointOneTwoFivePercentSeniorSubordinatedNotesDue2021Member_FD80F94C51DB154E6F7578A0633745F2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_SevenPointOneTwoFivePercentSeniorSubordinatedNotesDue2021Member_FD80F94C51DB154E6F7578A0633745F2" xlink:to="lab_dy_SevenPointOneTwoFivePercentSeniorSubordinatedNotesDue2021Member_FD80F94C51DB154E6F7578A0633745F2" xlink:type="arc" />
    <link:label id="lab_us-gaap_SegmentReportingInformationLineItems_F37096FFDEF8AFACD3C378A063371B1B_terseLabel_en-US" xlink:label="lab_us-gaap_SegmentReportingInformationLineItems_F37096FFDEF8AFACD3C378A063371B1B" 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_F37096FFDEF8AFACD3C378A063371B1B_label_en-US" xlink:label="lab_us-gaap_SegmentReportingInformationLineItems_F37096FFDEF8AFACD3C378A063371B1B" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_F37096FFDEF8AFACD3C378A063371B1B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_F37096FFDEF8AFACD3C378A063371B1B" xlink:to="lab_us-gaap_SegmentReportingInformationLineItems_F37096FFDEF8AFACD3C378A063371B1B" xlink:type="arc" />
    <link:label id="lab_us-gaap_NumberOfReportableSegments_AC6049A3269D38C1949978A06337A60C_terseLabel_en-US" xlink:label="lab_us-gaap_NumberOfReportableSegments_AC6049A3269D38C1949978A06337A60C" 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_AC6049A3269D38C1949978A06337A60C_label_en-US" xlink:label="lab_us-gaap_NumberOfReportableSegments_AC6049A3269D38C1949978A06337A60C" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NumberOfReportableSegments" xlink:label="loc_us-gaap_NumberOfReportableSegments_AC6049A3269D38C1949978A06337A60C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NumberOfReportableSegments_AC6049A3269D38C1949978A06337A60C" xlink:to="lab_us-gaap_NumberOfReportableSegments_AC6049A3269D38C1949978A06337A60C" xlink:type="arc" />
    <link:label id="lab_dy_NumberofSubsidiaries_C28E8727135C6B8F6ECB78A063374735_terseLabel_en-US" xlink:label="lab_dy_NumberofSubsidiaries_C28E8727135C6B8F6ECB78A063374735" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of subsidiaries</link:label>
    <link:label id="lab_dy_NumberofSubsidiaries_C28E8727135C6B8F6ECB78A063374735_label_en-US" xlink:label="lab_dy_NumberofSubsidiaries_C28E8727135C6B8F6ECB78A063374735" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number of Subsidiaries</link:label>
    <link:label id="lab_dy_NumberofSubsidiaries_C28E8727135C6B8F6ECB78A063374735_documentation_en-US" xlink:label="lab_dy_NumberofSubsidiaries_C28E8727135C6B8F6ECB78A063374735" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Number of Subsidiaries</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_NumberofSubsidiaries" xlink:label="loc_dy_NumberofSubsidiaries_C28E8727135C6B8F6ECB78A063374735" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_NumberofSubsidiaries_C28E8727135C6B8F6ECB78A063374735" xlink:to="lab_dy_NumberofSubsidiaries_C28E8727135C6B8F6ECB78A063374735" xlink:type="arc" />
    <link:label id="lab_us-gaap_RestrictedCashAndCashEquivalents_06373ADBA05E6C20C85C78A06337B742_terseLabel_en-US" xlink:label="lab_us-gaap_RestrictedCashAndCashEquivalents_06373ADBA05E6C20C85C78A06337B742" 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_RestrictedCashAndCashEquivalents_06373ADBA05E6C20C85C78A06337B742_label_en-US" xlink:label="lab_us-gaap_RestrictedCashAndCashEquivalents_06373ADBA05E6C20C85C78A06337B742" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restricted Cash and Cash Equivalents</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalents" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalents_06373ADBA05E6C20C85C78A06337B742" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalents_06373ADBA05E6C20C85C78A06337B742" xlink:to="lab_us-gaap_RestrictedCashAndCashEquivalents_06373ADBA05E6C20C85C78A06337B742" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_B8A73090E47B59F426E178A06337C54C_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_B8A73090E47B59F426E178A06337C54C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt, interest rate (in percent)</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_B8A73090E47B59F426E178A06337C54C_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_B8A73090E47B59F426E178A06337C54C" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_B8A73090E47B59F426E178A06337C54C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_B8A73090E47B59F426E178A06337C54C" xlink:to="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_B8A73090E47B59F426E178A06337C54C" xlink:type="arc" />
    <link:label id="lab_us-gaap_InvestmentsAndOtherNoncurrentAssets_82E96F900C7D63BF54C678A201E452E4_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentsAndOtherNoncurrentAssets_82E96F900C7D63BF54C678A201E452E4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Investments and Other Noncurrent Assets</link:label>
    <link:label id="lab_us-gaap_InvestmentsAndOtherNoncurrentAssets_82E96F900C7D63BF54C678A201E452E4_label_en-US" xlink:label="lab_us-gaap_InvestmentsAndOtherNoncurrentAssets_82E96F900C7D63BF54C678A201E452E4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Investments and Other Noncurrent Assets</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_InvestmentsAndOtherNoncurrentAssets" xlink:label="loc_us-gaap_InvestmentsAndOtherNoncurrentAssets_82E96F900C7D63BF54C678A201E452E4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentsAndOtherNoncurrentAssets_82E96F900C7D63BF54C678A201E452E4" xlink:to="lab_us-gaap_InvestmentsAndOtherNoncurrentAssets_82E96F900C7D63BF54C678A201E452E4" xlink:type="arc" />
    <link:label id="lab_us-gaap_PreferredStockDividendRatePercentage_86544CD20F94908A49C278A0633772EC_terseLabel_en-US" xlink:label="lab_us-gaap_PreferredStockDividendRatePercentage_86544CD20F94908A49C278A0633772EC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Investment dividend rate</link:label>
    <link:label id="lab_us-gaap_PreferredStockDividendRatePercentage_86544CD20F94908A49C278A0633772EC_label_en-US" xlink:label="lab_us-gaap_PreferredStockDividendRatePercentage_86544CD20F94908A49C278A0633772EC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Preferred Stock, Dividend Rate, Percentage</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PreferredStockDividendRatePercentage" xlink:label="loc_us-gaap_PreferredStockDividendRatePercentage_86544CD20F94908A49C278A0633772EC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PreferredStockDividendRatePercentage_86544CD20F94908A49C278A0633772EC" xlink:to="lab_us-gaap_PreferredStockDividendRatePercentage_86544CD20F94908A49C278A0633772EC" xlink:type="arc" />
    <link:label id="lab_us-gaap_ConcentrationRiskTable_D25A7C99F1FEABBDED1976E45F293A4D_terseLabel_en-US" xlink:label="lab_us-gaap_ConcentrationRiskTable_D25A7C99F1FEABBDED1976E45F293A4D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Concentration Risk [Table]</link:label>
    <link:label id="lab_us-gaap_ConcentrationRiskTable_D25A7C99F1FEABBDED1976E45F293A4D_label_en-US" xlink:label="lab_us-gaap_ConcentrationRiskTable_D25A7C99F1FEABBDED1976E45F293A4D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Concentration Risk [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ConcentrationRiskTable" xlink:label="loc_us-gaap_ConcentrationRiskTable_D25A7C99F1FEABBDED1976E45F293A4D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConcentrationRiskTable_D25A7C99F1FEABBDED1976E45F293A4D" xlink:to="lab_us-gaap_ConcentrationRiskTable_D25A7C99F1FEABBDED1976E45F293A4D" xlink:type="arc" />
    <link:label id="lab_us-gaap_ConcentrationRiskByBenchmarkAxis_CB45257BE8499E93976B76E45F2925A6_terseLabel_en-US" xlink:label="lab_us-gaap_ConcentrationRiskByBenchmarkAxis_CB45257BE8499E93976B76E45F2925A6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Concentration Risk Benchmark [Axis]</link:label>
    <link:label id="lab_us-gaap_ConcentrationRiskByBenchmarkAxis_CB45257BE8499E93976B76E45F2925A6_label_en-US" xlink:label="lab_us-gaap_ConcentrationRiskByBenchmarkAxis_CB45257BE8499E93976B76E45F2925A6" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ConcentrationRiskByBenchmarkAxis" xlink:label="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_CB45257BE8499E93976B76E45F2925A6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_CB45257BE8499E93976B76E45F2925A6" xlink:to="lab_us-gaap_ConcentrationRiskByBenchmarkAxis_CB45257BE8499E93976B76E45F2925A6" xlink:type="arc" />
    <link:label id="lab_us-gaap_ConcentrationRiskBenchmarkDomain_AA856343B215A89C0CE976E45F29AA8B_terseLabel_en-US" xlink:label="lab_us-gaap_ConcentrationRiskBenchmarkDomain_AA856343B215A89C0CE976E45F29AA8B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Concentration Risk Benchmark [Domain]</link:label>
    <link:label id="lab_us-gaap_ConcentrationRiskBenchmarkDomain_AA856343B215A89C0CE976E45F29AA8B_label_en-US" xlink:label="lab_us-gaap_ConcentrationRiskBenchmarkDomain_AA856343B215A89C0CE976E45F29AA8B" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ConcentrationRiskBenchmarkDomain" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_AA856343B215A89C0CE976E45F29AA8B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConcentrationRiskBenchmarkDomain_AA856343B215A89C0CE976E45F29AA8B" xlink:to="lab_us-gaap_ConcentrationRiskBenchmarkDomain_AA856343B215A89C0CE976E45F29AA8B" xlink:type="arc" />
    <link:label id="lab_us-gaap_SalesRevenueServicesNetMember_2AC05D15A924DEE563C176E45F29D8E7_terseLabel_en-US" xlink:label="lab_us-gaap_SalesRevenueServicesNetMember_2AC05D15A924DEE563C176E45F29D8E7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Sales Revenue, Services, Net</link:label>
    <link:label id="lab_us-gaap_SalesRevenueServicesNetMember_2AC05D15A924DEE563C176E45F29D8E7_label_en-US" xlink:label="lab_us-gaap_SalesRevenueServicesNetMember_2AC05D15A924DEE563C176E45F29D8E7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Sales Revenue, Services, Net [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SalesRevenueServicesNetMember" xlink:label="loc_us-gaap_SalesRevenueServicesNetMember_2AC05D15A924DEE563C176E45F29D8E7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SalesRevenueServicesNetMember_2AC05D15A924DEE563C176E45F29D8E7" xlink:to="lab_us-gaap_SalesRevenueServicesNetMember_2AC05D15A924DEE563C176E45F29D8E7" xlink:type="arc" />
    <link:label id="lab_dy_TradeAccountsReceivableandCostsandEstimatedEarningsMember_D85AEBED6413313F78F576E45F29BD40_terseLabel_en-US" xlink:label="lab_dy_TradeAccountsReceivableandCostsandEstimatedEarningsMember_D85AEBED6413313F78F576E45F29BD40" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Trade Accounts Receivable and Costs and Estimated Earnings</link:label>
    <link:label id="lab_dy_TradeAccountsReceivableandCostsandEstimatedEarningsMember_D85AEBED6413313F78F576E45F29BD40_label_en-US" xlink:label="lab_dy_TradeAccountsReceivableandCostsandEstimatedEarningsMember_D85AEBED6413313F78F576E45F29BD40" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Trade Accounts Receivable and Costs and Estimated Earnings [Member]</link:label>
    <link:label id="lab_dy_TradeAccountsReceivableandCostsandEstimatedEarningsMember_D85AEBED6413313F78F576E45F29BD40_documentation_en-US" xlink:label="lab_dy_TradeAccountsReceivableandCostsandEstimatedEarningsMember_D85AEBED6413313F78F576E45F29BD40" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Trade accounts receivable and costs and estimated earnings</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_TradeAccountsReceivableandCostsandEstimatedEarningsMember" xlink:label="loc_dy_TradeAccountsReceivableandCostsandEstimatedEarningsMember_D85AEBED6413313F78F576E45F29BD40" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_TradeAccountsReceivableandCostsandEstimatedEarningsMember_D85AEBED6413313F78F576E45F29BD40" xlink:to="lab_dy_TradeAccountsReceivableandCostsandEstimatedEarningsMember_D85AEBED6413313F78F576E45F29BD40" xlink:type="arc" />
    <link:label id="lab_us-gaap_ConcentrationRiskByTypeAxis_69D70740DA45434E62E376E45F2A4F98_terseLabel_en-US" xlink:label="lab_us-gaap_ConcentrationRiskByTypeAxis_69D70740DA45434E62E376E45F2A4F98" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Concentration Risk Type [Axis]</link:label>
    <link:label id="lab_us-gaap_ConcentrationRiskByTypeAxis_69D70740DA45434E62E376E45F2A4F98_label_en-US" xlink:label="lab_us-gaap_ConcentrationRiskByTypeAxis_69D70740DA45434E62E376E45F2A4F98" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ConcentrationRiskByTypeAxis" xlink:label="loc_us-gaap_ConcentrationRiskByTypeAxis_69D70740DA45434E62E376E45F2A4F98" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis_69D70740DA45434E62E376E45F2A4F98" xlink:to="lab_us-gaap_ConcentrationRiskByTypeAxis_69D70740DA45434E62E376E45F2A4F98" xlink:type="arc" />
    <link:label id="lab_us-gaap_ConcentrationRiskTypeDomain_B18D9F0B824B491E6D8376E45F2A3D7F_terseLabel_en-US" xlink:label="lab_us-gaap_ConcentrationRiskTypeDomain_B18D9F0B824B491E6D8376E45F2A3D7F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Concentration Risk Type [Domain]</link:label>
    <link:label id="lab_us-gaap_ConcentrationRiskTypeDomain_B18D9F0B824B491E6D8376E45F2A3D7F_label_en-US" xlink:label="lab_us-gaap_ConcentrationRiskTypeDomain_B18D9F0B824B491E6D8376E45F2A3D7F" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ConcentrationRiskTypeDomain" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_B18D9F0B824B491E6D8376E45F2A3D7F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConcentrationRiskTypeDomain_B18D9F0B824B491E6D8376E45F2A3D7F" xlink:to="lab_us-gaap_ConcentrationRiskTypeDomain_B18D9F0B824B491E6D8376E45F2A3D7F" xlink:type="arc" />
    <link:label id="lab_us-gaap_CustomerConcentrationRiskMember_D8D26B93D5C52F973D3E76E45F2A3F5B_terseLabel_en-US" xlink:label="lab_us-gaap_CustomerConcentrationRiskMember_D8D26B93D5C52F973D3E76E45F2A3F5B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Customer Concentration Risk</link:label>
    <link:label id="lab_us-gaap_CustomerConcentrationRiskMember_D8D26B93D5C52F973D3E76E45F2A3F5B_label_en-US" xlink:label="lab_us-gaap_CustomerConcentrationRiskMember_D8D26B93D5C52F973D3E76E45F2A3F5B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Customer Concentration Risk [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CustomerConcentrationRiskMember" xlink:label="loc_us-gaap_CustomerConcentrationRiskMember_D8D26B93D5C52F973D3E76E45F2A3F5B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CustomerConcentrationRiskMember_D8D26B93D5C52F973D3E76E45F2A3F5B" xlink:to="lab_us-gaap_CustomerConcentrationRiskMember_D8D26B93D5C52F973D3E76E45F2A3F5B" xlink:type="arc" />
    <link:label id="lab_us-gaap_MajorCustomersAxis_7C5B4056C52E555042DF76E45F2A33DA_terseLabel_en-US" xlink:label="lab_us-gaap_MajorCustomersAxis_7C5B4056C52E555042DF76E45F2A33DA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Major Customers [Axis]</link:label>
    <link:label id="lab_us-gaap_MajorCustomersAxis_7C5B4056C52E555042DF76E45F2A33DA_label_en-US" xlink:label="lab_us-gaap_MajorCustomersAxis_7C5B4056C52E555042DF76E45F2A33DA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Customer [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_MajorCustomersAxis" xlink:label="loc_us-gaap_MajorCustomersAxis_7C5B4056C52E555042DF76E45F2A33DA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_MajorCustomersAxis_7C5B4056C52E555042DF76E45F2A33DA" xlink:to="lab_us-gaap_MajorCustomersAxis_7C5B4056C52E555042DF76E45F2A33DA" xlink:type="arc" />
    <link:label id="lab_us-gaap_NameOfMajorCustomerDomain_722B11DF7F56815733B876E45F2A0480_terseLabel_en-US" xlink:label="lab_us-gaap_NameOfMajorCustomerDomain_722B11DF7F56815733B876E45F2A0480" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Name of Major Customer [Domain]</link:label>
    <link:label id="lab_us-gaap_NameOfMajorCustomerDomain_722B11DF7F56815733B876E45F2A0480_label_en-US" xlink:label="lab_us-gaap_NameOfMajorCustomerDomain_722B11DF7F56815733B876E45F2A0480" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Customer [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NameOfMajorCustomerDomain" xlink:label="loc_us-gaap_NameOfMajorCustomerDomain_722B11DF7F56815733B876E45F2A0480" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NameOfMajorCustomerDomain_722B11DF7F56815733B876E45F2A0480" xlink:to="lab_us-gaap_NameOfMajorCustomerDomain_722B11DF7F56815733B876E45F2A0480" xlink:type="arc" />
    <link:label id="lab_dy_FiveUnnamedCustomersMember_F0612581FF736DB2D97876E45F2A9B2A_terseLabel_en-US" xlink:label="lab_dy_FiveUnnamedCustomersMember_F0612581FF736DB2D97876E45F2A9B2A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Five Unnamed Customers</link:label>
    <link:label id="lab_dy_FiveUnnamedCustomersMember_F0612581FF736DB2D97876E45F2A9B2A_label_en-US" xlink:label="lab_dy_FiveUnnamedCustomersMember_F0612581FF736DB2D97876E45F2A9B2A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Five Unnamed Customers [Member]</link:label>
    <link:label id="lab_dy_FiveUnnamedCustomersMember_F0612581FF736DB2D97876E45F2A9B2A_documentation_en-US" xlink:label="lab_dy_FiveUnnamedCustomersMember_F0612581FF736DB2D97876E45F2A9B2A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Five Unnamed Customers</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_FiveUnnamedCustomersMember" xlink:label="loc_dy_FiveUnnamedCustomersMember_F0612581FF736DB2D97876E45F2A9B2A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_FiveUnnamedCustomersMember_F0612581FF736DB2D97876E45F2A9B2A" xlink:to="lab_dy_FiveUnnamedCustomersMember_F0612581FF736DB2D97876E45F2A9B2A" xlink:type="arc" />
    <link:label id="lab_dy_AttMember_7B204C4ADD69EB26F5C276E45F2AA550_terseLabel_en-US" xlink:label="lab_dy_AttMember_7B204C4ADD69EB26F5C276E45F2AA550" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">AT&amp;T Inc.</link:label>
    <link:label id="lab_dy_AttMember_7B204C4ADD69EB26F5C276E45F2AA550_label_en-US" xlink:label="lab_dy_AttMember_7B204C4ADD69EB26F5C276E45F2AA550" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">ATT [Member]</link:label>
    <link:label id="lab_dy_AttMember_7B204C4ADD69EB26F5C276E45F2AA550_documentation_en-US" xlink:label="lab_dy_AttMember_7B204C4ADD69EB26F5C276E45F2AA550" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">AT&amp;T[Member]</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_AttMember" xlink:label="loc_dy_AttMember_7B204C4ADD69EB26F5C276E45F2AA550" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_AttMember_7B204C4ADD69EB26F5C276E45F2AA550" xlink:to="lab_dy_AttMember_7B204C4ADD69EB26F5C276E45F2AA550" xlink:type="arc" />
    <link:label id="lab_dy_CenturylinkMember_9EAABB9A87ED5DCF622B76E45F2A4779_terseLabel_en-US" xlink:label="lab_dy_CenturylinkMember_9EAABB9A87ED5DCF622B76E45F2A4779" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">CenturyLink, Inc.</link:label>
    <link:label id="lab_dy_CenturylinkMember_9EAABB9A87ED5DCF622B76E45F2A4779_label_en-US" xlink:label="lab_dy_CenturylinkMember_9EAABB9A87ED5DCF622B76E45F2A4779" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">CenturyLink [Member]</link:label>
    <link:label id="lab_dy_CenturylinkMember_9EAABB9A87ED5DCF622B76E45F2A4779_documentation_en-US" xlink:label="lab_dy_CenturylinkMember_9EAABB9A87ED5DCF622B76E45F2A4779" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Customer that represents a significant portion of the Company's customer base.</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_CenturylinkMember" xlink:label="loc_dy_CenturylinkMember_9EAABB9A87ED5DCF622B76E45F2A4779" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_CenturylinkMember_9EAABB9A87ED5DCF622B76E45F2A4779" xlink:to="lab_dy_CenturylinkMember_9EAABB9A87ED5DCF622B76E45F2A4779" xlink:type="arc" />
    <link:label id="lab_dy_ComcastMember_184DB855CB878E28E51276E45F2AF2AD_terseLabel_en-US" xlink:label="lab_dy_ComcastMember_184DB855CB878E28E51276E45F2AF2AD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Comcast Corporation</link:label>
    <link:label id="lab_dy_ComcastMember_184DB855CB878E28E51276E45F2AF2AD_label_en-US" xlink:label="lab_dy_ComcastMember_184DB855CB878E28E51276E45F2AF2AD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Comcast [Member]</link:label>
    <link:label id="lab_dy_ComcastMember_184DB855CB878E28E51276E45F2AF2AD_documentation_en-US" xlink:label="lab_dy_ComcastMember_184DB855CB878E28E51276E45F2AF2AD" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Customer that represents a significant portion of the Company's customer base.</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_ComcastMember" xlink:label="loc_dy_ComcastMember_184DB855CB878E28E51276E45F2AF2AD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_ComcastMember_184DB855CB878E28E51276E45F2AF2AD" xlink:to="lab_dy_ComcastMember_184DB855CB878E28E51276E45F2AF2AD" xlink:type="arc" />
    <link:label id="lab_dy_CustomerAMember_61EF44933FD3D94835BF76E9EC2BA6A1_terseLabel_en-US" xlink:label="lab_dy_CustomerAMember_61EF44933FD3D94835BF76E9EC2BA6A1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Another Customer</link:label>
    <link:label id="lab_dy_CustomerAMember_61EF44933FD3D94835BF76E9EC2BA6A1_label_en-US" xlink:label="lab_dy_CustomerAMember_61EF44933FD3D94835BF76E9EC2BA6A1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Customer A [Member]</link:label>
    <link:label id="lab_dy_CustomerAMember_61EF44933FD3D94835BF76E9EC2BA6A1_documentation_en-US" xlink:label="lab_dy_CustomerAMember_61EF44933FD3D94835BF76E9EC2BA6A1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Customer A [Member]</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_CustomerAMember" xlink:label="loc_dy_CustomerAMember_61EF44933FD3D94835BF76E9EC2BA6A1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_CustomerAMember_61EF44933FD3D94835BF76E9EC2BA6A1" xlink:to="lab_dy_CustomerAMember_61EF44933FD3D94835BF76E9EC2BA6A1" xlink:type="arc" />
    <link:label id="lab_us-gaap_ConcentrationRiskLineItems_FBC1BA8A792C9AD5F8A076E45F2B58E0_terseLabel_en-US" xlink:label="lab_us-gaap_ConcentrationRiskLineItems_FBC1BA8A792C9AD5F8A076E45F2B58E0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Concentration Risk [Line Items]</link:label>
    <link:label id="lab_us-gaap_ConcentrationRiskLineItems_FBC1BA8A792C9AD5F8A076E45F2B58E0_label_en-US" xlink:label="lab_us-gaap_ConcentrationRiskLineItems_FBC1BA8A792C9AD5F8A076E45F2B58E0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Concentration Risk [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ConcentrationRiskLineItems" xlink:label="loc_us-gaap_ConcentrationRiskLineItems_FBC1BA8A792C9AD5F8A076E45F2B58E0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConcentrationRiskLineItems_FBC1BA8A792C9AD5F8A076E45F2B58E0" xlink:to="lab_us-gaap_ConcentrationRiskLineItems_FBC1BA8A792C9AD5F8A076E45F2B58E0" xlink:type="arc" />
    <link:label id="lab_dy_NumberOfCustomersClassifiedAsHighlyConcentrated_C8A525B93D4BEBBC37E776E45F2B3165_terseLabel_en-US" xlink:label="lab_dy_NumberOfCustomersClassifiedAsHighlyConcentrated_C8A525B93D4BEBBC37E776E45F2B3165" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of customers classified as highly concentrated</link:label>
    <link:label id="lab_dy_NumberOfCustomersClassifiedAsHighlyConcentrated_C8A525B93D4BEBBC37E776E45F2B3165_label_en-US" xlink:label="lab_dy_NumberOfCustomersClassifiedAsHighlyConcentrated_C8A525B93D4BEBBC37E776E45F2B3165" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number of customers classified as highly concentrated</link:label>
    <link:label id="lab_dy_NumberOfCustomersClassifiedAsHighlyConcentrated_C8A525B93D4BEBBC37E776E45F2B3165_documentation_en-US" xlink:label="lab_dy_NumberOfCustomersClassifiedAsHighlyConcentrated_C8A525B93D4BEBBC37E776E45F2B3165" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The number of customers classified as highly concentrated in comparison to total revenue.</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_NumberOfCustomersClassifiedAsHighlyConcentrated" xlink:label="loc_dy_NumberOfCustomersClassifiedAsHighlyConcentrated_C8A525B93D4BEBBC37E776E45F2B3165" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_NumberOfCustomersClassifiedAsHighlyConcentrated_C8A525B93D4BEBBC37E776E45F2B3165" xlink:to="lab_dy_NumberOfCustomersClassifiedAsHighlyConcentrated_C8A525B93D4BEBBC37E776E45F2B3165" xlink:type="arc" />
    <link:label id="lab_us-gaap_ConcentrationRiskPercentage1_C60F54A58839E143073476E45F2BF4C1_terseLabel_en-US" xlink:label="lab_us-gaap_ConcentrationRiskPercentage1_C60F54A58839E143073476E45F2BF4C1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Concentration risk percentage</link:label>
    <link:label id="lab_us-gaap_ConcentrationRiskPercentage1_C60F54A58839E143073476E45F2BF4C1_label_en-US" xlink:label="lab_us-gaap_ConcentrationRiskPercentage1_C60F54A58839E143073476E45F2BF4C1" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ConcentrationRiskPercentage1" xlink:label="loc_us-gaap_ConcentrationRiskPercentage1_C60F54A58839E143073476E45F2BF4C1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConcentrationRiskPercentage1_C60F54A58839E143073476E45F2BF4C1" xlink:to="lab_us-gaap_ConcentrationRiskPercentage1_C60F54A58839E143073476E45F2BF4C1" xlink:type="arc" />
    <link:label id="lab_dy_ConcentrationRiskAmount_28202809FB757A8C105F76E45F2B46CF_terseLabel_en-US" xlink:label="lab_dy_ConcentrationRiskAmount_28202809FB757A8C105F76E45F2B46CF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accounts receivable, costs, and estimated earnings in excess of billings</link:label>
    <link:label id="lab_dy_ConcentrationRiskAmount_28202809FB757A8C105F76E45F2B46CF_label_en-US" xlink:label="lab_dy_ConcentrationRiskAmount_28202809FB757A8C105F76E45F2B46CF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Concentration Risk, Amount</link:label>
    <link:label id="lab_dy_ConcentrationRiskAmount_28202809FB757A8C105F76E45F2B46CF_documentation_en-US" xlink:label="lab_dy_ConcentrationRiskAmount_28202809FB757A8C105F76E45F2B46CF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection. This also includes the amount included in cost of uncompleted contracts in excess of related billings, or unbilled accounts receivable.</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_ConcentrationRiskAmount" xlink:label="loc_dy_ConcentrationRiskAmount_28202809FB757A8C105F76E45F2B46CF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_ConcentrationRiskAmount_28202809FB757A8C105F76E45F2B46CF" xlink:to="lab_dy_ConcentrationRiskAmount_28202809FB757A8C105F76E45F2B46CF" xlink:type="arc" />
    <link:label id="lab_us-gaap_BasisOfPresentationAndSignificantAccountingPoliciesTextBlock_7C8303EA6C5B4D9F2C1A700C4628C350_terseLabel_en-US" xlink:label="lab_us-gaap_BasisOfPresentationAndSignificantAccountingPoliciesTextBlock_7C8303EA6C5B4D9F2C1A700C4628C350" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Basis of Presentation and Accounting Policies</link:label>
    <link:label id="lab_us-gaap_BasisOfPresentationAndSignificantAccountingPoliciesTextBlock_7C8303EA6C5B4D9F2C1A700C4628C350_label_en-US" xlink:label="lab_us-gaap_BasisOfPresentationAndSignificantAccountingPoliciesTextBlock_7C8303EA6C5B4D9F2C1A700C4628C350" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Basis of Presentation and Significant Accounting Policies [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_BasisOfPresentationAndSignificantAccountingPoliciesTextBlock" xlink:label="loc_us-gaap_BasisOfPresentationAndSignificantAccountingPoliciesTextBlock_7C8303EA6C5B4D9F2C1A700C4628C350" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BasisOfPresentationAndSignificantAccountingPoliciesTextBlock_7C8303EA6C5B4D9F2C1A700C4628C350" xlink:to="lab_us-gaap_BasisOfPresentationAndSignificantAccountingPoliciesTextBlock_7C8303EA6C5B4D9F2C1A700C4628C350" xlink:type="arc" />
    <link:label id="lab_us-gaap_EarningsPerShareBasicAbstract_0F55D2A71082181352AA700C4618726F_terseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareBasicAbstract_0F55D2A71082181352AA700C4618726F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Basic earnings per unit</link:label>
    <link:label id="lab_us-gaap_EarningsPerShareBasicAbstract_0F55D2A71082181352AA700C4618726F_label_en-US" xlink:label="lab_us-gaap_EarningsPerShareBasicAbstract_0F55D2A71082181352AA700C4618726F" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_EarningsPerShareBasicAbstract" xlink:label="loc_us-gaap_EarningsPerShareBasicAbstract_0F55D2A71082181352AA700C4618726F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EarningsPerShareBasicAbstract_0F55D2A71082181352AA700C4618726F" xlink:to="lab_us-gaap_EarningsPerShareBasicAbstract_0F55D2A71082181352AA700C4618726F" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetIncomeLoss_72FB1C6C2CE0F3046E72700C46185441_verboseLabel_en-US" xlink:label="lab_us-gaap_NetIncomeLoss_72FB1C6C2CE0F3046E72700C46185441" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Net income</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_72FB1C6C2CE0F3046E72700C46185441" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetIncomeLoss_72FB1C6C2CE0F3046E72700C46185441" xlink:to="lab_us-gaap_NetIncomeLoss_72FB1C6C2CE0F3046E72700C46185441" xlink:type="arc" />
    <link:label id="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_A2F63E4E9ACC0BF44A21700C46180CFB_terseLabel_en-US" xlink:label="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_A2F63E4E9ACC0BF44A21700C46180CFB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Weighted-average number of common shares (in shares)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_A2F63E4E9ACC0BF44A21700C46180CFB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_A2F63E4E9ACC0BF44A21700C46180CFB" xlink:to="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_A2F63E4E9ACC0BF44A21700C46180CFB" xlink:type="arc" />
    <link:label id="lab_us-gaap_EarningsPerShareDilutedAbstract_B0A164E41AF914ED491D700C46181E46_terseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareDilutedAbstract_B0A164E41AF914ED491D700C46181E46" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Diluted earnings per unit</link:label>
    <link:label id="lab_us-gaap_EarningsPerShareDilutedAbstract_B0A164E41AF914ED491D700C46181E46_label_en-US" xlink:label="lab_us-gaap_EarningsPerShareDilutedAbstract_B0A164E41AF914ED491D700C46181E46" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_EarningsPerShareDilutedAbstract" xlink:label="loc_us-gaap_EarningsPerShareDilutedAbstract_B0A164E41AF914ED491D700C46181E46" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EarningsPerShareDilutedAbstract_B0A164E41AF914ED491D700C46181E46" xlink:to="lab_us-gaap_EarningsPerShareDilutedAbstract_B0A164E41AF914ED491D700C46181E46" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_66378817F409DE17F766700C4618727A_terseLabel_en-US" xlink:label="lab_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_66378817F409DE17F766700C4618727A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Potential common stock arising from stock options, and unvested restricted share units (in shares)</link:label>
    <link:label id="lab_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_66378817F409DE17F766700C4618727A_label_en-US" xlink:label="lab_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_66378817F409DE17F766700C4618727A" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements" xlink:label="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_66378817F409DE17F766700C4618727A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_66378817F409DE17F766700C4618727A" xlink:to="lab_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_66378817F409DE17F766700C4618727A" xlink:type="arc" />
    <link:label id="lab_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_6C92C2DDDC2922925AD0700C46189346_totalLabel_en-US" xlink:label="lab_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_6C92C2DDDC2922925AD0700C46189346" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total shares-diluted (in shares)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_6C92C2DDDC2922925AD0700C46189346" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_6C92C2DDDC2922925AD0700C46189346" xlink:to="lab_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_6C92C2DDDC2922925AD0700C46189346" xlink:type="arc" />
    <link:label id="lab_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_A3195BE51B9A2AACF00B700C46184B76_terseLabel_en-US" xlink:label="lab_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_A3195BE51B9A2AACF00B700C46184B76" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Anti-dilutive weighted shares excluded from the calculation of earnings per share (in shares)</link:label>
    <link:label id="lab_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_A3195BE51B9A2AACF00B700C46184B76_label_en-US" xlink:label="lab_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_A3195BE51B9A2AACF00B700C46184B76" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_A3195BE51B9A2AACF00B700C46184B76" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_A3195BE51B9A2AACF00B700C46184B76" xlink:to="lab_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_A3195BE51B9A2AACF00B700C46184B76" xlink:type="arc" />
    <link:label id="lab_us-gaap_EarningsPerShareTextBlock_5CD31B847EEFD0227934700C46C4C539_terseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareTextBlock_5CD31B847EEFD0227934700C46C4C539" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Computation of Earnings Per Common Share</link:label>
    <link:label id="lab_us-gaap_EarningsPerShareTextBlock_5CD31B847EEFD0227934700C46C4C539_label_en-US" xlink:label="lab_us-gaap_EarningsPerShareTextBlock_5CD31B847EEFD0227934700C46C4C539" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_EarningsPerShareTextBlock" xlink:label="loc_us-gaap_EarningsPerShareTextBlock_5CD31B847EEFD0227934700C46C4C539" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EarningsPerShareTextBlock_5CD31B847EEFD0227934700C46C4C539" xlink:to="lab_us-gaap_EarningsPerShareTextBlock_5CD31B847EEFD0227934700C46C4C539" xlink:type="arc" />
    <link:label id="lab_us-gaap_PayablesAndAccrualsAbstract_96176F400854FF5C88E8688AA7DFE2A6_label_en-US" xlink:label="lab_us-gaap_PayablesAndAccrualsAbstract_96176F400854FF5C88E8688AA7DFE2A6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payables and Accruals [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PayablesAndAccrualsAbstract" xlink:label="loc_us-gaap_PayablesAndAccrualsAbstract_96176F400854FF5C88E8688AA7DFE2A6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PayablesAndAccrualsAbstract_96176F400854FF5C88E8688AA7DFE2A6" xlink:to="lab_us-gaap_PayablesAndAccrualsAbstract_96176F400854FF5C88E8688AA7DFE2A6" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccruedPayrollTaxesCurrent_F58F771BDBAB043AED64688AA7E0C5D6_terseLabel_en-US" xlink:label="lab_us-gaap_AccruedPayrollTaxesCurrent_F58F771BDBAB043AED64688AA7E0C5D6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accrued payroll and related taxes</link:label>
    <link:label id="lab_us-gaap_AccruedPayrollTaxesCurrent_F58F771BDBAB043AED64688AA7E0C5D6_label_en-US" xlink:label="lab_us-gaap_AccruedPayrollTaxesCurrent_F58F771BDBAB043AED64688AA7E0C5D6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accrued Payroll Taxes, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AccruedPayrollTaxesCurrent" xlink:label="loc_us-gaap_AccruedPayrollTaxesCurrent_F58F771BDBAB043AED64688AA7E0C5D6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccruedPayrollTaxesCurrent_F58F771BDBAB043AED64688AA7E0C5D6" xlink:to="lab_us-gaap_AccruedPayrollTaxesCurrent_F58F771BDBAB043AED64688AA7E0C5D6" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccruedEmployeeBenefitsCurrent_0193091AC5684DBC0D33688AA7E03708_terseLabel_en-US" xlink:label="lab_us-gaap_AccruedEmployeeBenefitsCurrent_0193091AC5684DBC0D33688AA7E03708" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accrued employee benefit and incentive plan costs</link:label>
    <link:label id="lab_us-gaap_AccruedEmployeeBenefitsCurrent_0193091AC5684DBC0D33688AA7E03708_label_en-US" xlink:label="lab_us-gaap_AccruedEmployeeBenefitsCurrent_0193091AC5684DBC0D33688AA7E03708" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accrued Employee Benefits, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AccruedEmployeeBenefitsCurrent" xlink:label="loc_us-gaap_AccruedEmployeeBenefitsCurrent_0193091AC5684DBC0D33688AA7E03708" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccruedEmployeeBenefitsCurrent_0193091AC5684DBC0D33688AA7E03708" xlink:to="lab_us-gaap_AccruedEmployeeBenefitsCurrent_0193091AC5684DBC0D33688AA7E03708" xlink:type="arc" />
    <link:label id="lab_dy_AccruedConstructionCostsCurrent_720C570B0458C7B2CB29688AA7E01C0C_terseLabel_en-US" xlink:label="lab_dy_AccruedConstructionCostsCurrent_720C570B0458C7B2CB29688AA7E01C0C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accrued construction costs</link:label>
    <link:label id="lab_dy_AccruedConstructionCostsCurrent_720C570B0458C7B2CB29688AA7E01C0C_label_en-US" xlink:label="lab_dy_AccruedConstructionCostsCurrent_720C570B0458C7B2CB29688AA7E01C0C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accrued Construction Costs, Current</link:label>
    <link:label id="lab_dy_AccruedConstructionCostsCurrent_720C570B0458C7B2CB29688AA7E01C0C_documentation_en-US" xlink:label="lab_dy_AccruedConstructionCostsCurrent_720C570B0458C7B2CB29688AA7E01C0C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Accrued construction costs.</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_AccruedConstructionCostsCurrent" xlink:label="loc_dy_AccruedConstructionCostsCurrent_720C570B0458C7B2CB29688AA7E01C0C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_AccruedConstructionCostsCurrent_720C570B0458C7B2CB29688AA7E01C0C" xlink:to="lab_dy_AccruedConstructionCostsCurrent_720C570B0458C7B2CB29688AA7E01C0C" xlink:type="arc" />
    <link:label id="lab_dy_AccruedInterestAndRelatedBankFees_B95D1E6E2A8C0BA1DA02688AA7E0F343_terseLabel_en-US" xlink:label="lab_dy_AccruedInterestAndRelatedBankFees_B95D1E6E2A8C0BA1DA02688AA7E0F343" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accrued interest and related bank fees</link:label>
    <link:label id="lab_dy_AccruedInterestAndRelatedBankFees_B95D1E6E2A8C0BA1DA02688AA7E0F343_label_en-US" xlink:label="lab_dy_AccruedInterestAndRelatedBankFees_B95D1E6E2A8C0BA1DA02688AA7E0F343" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accrued interest and related bank fees</link:label>
    <link:label id="lab_dy_AccruedInterestAndRelatedBankFees_B95D1E6E2A8C0BA1DA02688AA7E0F343_documentation_en-US" xlink:label="lab_dy_AccruedInterestAndRelatedBankFees_B95D1E6E2A8C0BA1DA02688AA7E0F343" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Accrued interest and related bank fees</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_AccruedInterestAndRelatedBankFees" xlink:label="loc_dy_AccruedInterestAndRelatedBankFees_B95D1E6E2A8C0BA1DA02688AA7E0F343" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_AccruedInterestAndRelatedBankFees_B95D1E6E2A8C0BA1DA02688AA7E0F343" xlink:to="lab_dy_AccruedInterestAndRelatedBankFees_B95D1E6E2A8C0BA1DA02688AA7E0F343" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherLiabilitiesCurrent_9C43D8A51B349D441F0C688AA7E1F45A_terseLabel_en-US" xlink:label="lab_us-gaap_OtherLiabilitiesCurrent_9C43D8A51B349D441F0C688AA7E1F45A" 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_OtherLiabilitiesCurrent_9C43D8A51B349D441F0C688AA7E1F45A_label_en-US" xlink:label="lab_us-gaap_OtherLiabilitiesCurrent_9C43D8A51B349D441F0C688AA7E1F45A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Liabilities, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherLiabilitiesCurrent" xlink:label="loc_us-gaap_OtherLiabilitiesCurrent_9C43D8A51B349D441F0C688AA7E1F45A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherLiabilitiesCurrent_9C43D8A51B349D441F0C688AA7E1F45A" xlink:to="lab_us-gaap_OtherLiabilitiesCurrent_9C43D8A51B349D441F0C688AA7E1F45A" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherAccruedLiabilitiesCurrent_76C89B84636A79F37A04688AA7E11BBE_totalLabel_en-US" xlink:label="lab_us-gaap_OtherAccruedLiabilitiesCurrent_76C89B84636A79F37A04688AA7E11BBE" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total other accrued liabilities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherAccruedLiabilitiesCurrent" xlink:label="loc_us-gaap_OtherAccruedLiabilitiesCurrent_76C89B84636A79F37A04688AA7E11BBE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherAccruedLiabilitiesCurrent_76C89B84636A79F37A04688AA7E11BBE" xlink:to="lab_us-gaap_OtherAccruedLiabilitiesCurrent_76C89B84636A79F37A04688AA7E11BBE" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccruedIncomeTaxesCurrent_B05C02B09FF2F8297CF268A6D7F92EC2_terseLabel_en-US" xlink:label="lab_us-gaap_AccruedIncomeTaxesCurrent_B05C02B09FF2F8297CF268A6D7F92EC2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accrued income taxes for other current liabilities</link:label>
    <link:label id="lab_us-gaap_AccruedIncomeTaxesCurrent_B05C02B09FF2F8297CF268A6D7F92EC2_label_en-US" xlink:label="lab_us-gaap_AccruedIncomeTaxesCurrent_B05C02B09FF2F8297CF268A6D7F92EC2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accrued Income Taxes, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AccruedIncomeTaxesCurrent" xlink:label="loc_us-gaap_AccruedIncomeTaxesCurrent_B05C02B09FF2F8297CF268A6D7F92EC2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccruedIncomeTaxesCurrent_B05C02B09FF2F8297CF268A6D7F92EC2" xlink:to="lab_us-gaap_AccruedIncomeTaxesCurrent_B05C02B09FF2F8297CF268A6D7F92EC2" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncomeTaxDisclosureAbstract_23F8DB69FF3BD0820740700C46475B07_label_en-US" xlink:label="lab_us-gaap_IncomeTaxDisclosureAbstract_23F8DB69FF3BD0820740700C46475B07" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncomeTaxDisclosureAbstract" xlink:label="loc_us-gaap_IncomeTaxDisclosureAbstract_23F8DB69FF3BD0820740700C46475B07" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeTaxDisclosureAbstract_23F8DB69FF3BD0820740700C46475B07" xlink:to="lab_us-gaap_IncomeTaxDisclosureAbstract_23F8DB69FF3BD0820740700C46475B07" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncomeTaxDisclosureTextBlock_A345D64FCA182F0E0500700C46471CAF_verboseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxDisclosureTextBlock_A345D64FCA182F0E0500700C46471CAF" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Income Taxes</link:label>
    <link:label id="lab_us-gaap_IncomeTaxDisclosureTextBlock_A345D64FCA182F0E0500700C46471CAF_label_en-US" xlink:label="lab_us-gaap_IncomeTaxDisclosureTextBlock_A345D64FCA182F0E0500700C46471CAF" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncomeTaxDisclosureTextBlock" xlink:label="loc_us-gaap_IncomeTaxDisclosureTextBlock_A345D64FCA182F0E0500700C46471CAF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeTaxDisclosureTextBlock_A345D64FCA182F0E0500700C46471CAF" xlink:to="lab_us-gaap_IncomeTaxDisclosureTextBlock_A345D64FCA182F0E0500700C46471CAF" xlink:type="arc" />
    <link:label id="lab_us-gaap_ReceivablesAbstract_6AD42EE962A11EBE63CE700C47318844_label_en-US" xlink:label="lab_us-gaap_ReceivablesAbstract_6AD42EE962A11EBE63CE700C47318844" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Receivables [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ReceivablesAbstract" xlink:label="loc_us-gaap_ReceivablesAbstract_6AD42EE962A11EBE63CE700C47318844" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ReceivablesAbstract_6AD42EE962A11EBE63CE700C47318844" xlink:to="lab_us-gaap_ReceivablesAbstract_6AD42EE962A11EBE63CE700C47318844" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock_5F45ACEC2F9B6236BD0B700C473183C1_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock_5F45ACEC2F9B6236BD0B700C473183C1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Accounts Receivable</link:label>
    <link:label id="lab_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock_5F45ACEC2F9B6236BD0B700C473183C1_label_en-US" xlink:label="lab_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock_5F45ACEC2F9B6236BD0B700C473183C1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock" xlink:label="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock_5F45ACEC2F9B6236BD0B700C473183C1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock_5F45ACEC2F9B6236BD0B700C473183C1" xlink:to="lab_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock_5F45ACEC2F9B6236BD0B700C473183C1" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccountsPayableAccruedLiabilitiesAndOtherLiabilitiesDisclosureCurrentTextBlock_27A3175816FB9BA5782D700C4721C3D3_terseLabel_en-US" xlink:label="lab_us-gaap_AccountsPayableAccruedLiabilitiesAndOtherLiabilitiesDisclosureCurrentTextBlock_27A3175816FB9BA5782D700C4721C3D3" 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_AccountsPayableAccruedLiabilitiesAndOtherLiabilitiesDisclosureCurrentTextBlock_27A3175816FB9BA5782D700C4721C3D3_label_en-US" xlink:label="lab_us-gaap_AccountsPayableAccruedLiabilitiesAndOtherLiabilitiesDisclosureCurrentTextBlock_27A3175816FB9BA5782D700C4721C3D3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Current [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AccountsPayableAccruedLiabilitiesAndOtherLiabilitiesDisclosureCurrentTextBlock" xlink:label="loc_us-gaap_AccountsPayableAccruedLiabilitiesAndOtherLiabilitiesDisclosureCurrentTextBlock_27A3175816FB9BA5782D700C4721C3D3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountsPayableAccruedLiabilitiesAndOtherLiabilitiesDisclosureCurrentTextBlock_27A3175816FB9BA5782D700C4721C3D3" xlink:to="lab_us-gaap_AccountsPayableAccruedLiabilitiesAndOtherLiabilitiesDisclosureCurrentTextBlock_27A3175816FB9BA5782D700C4721C3D3" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentTable_1B5B6827A73F5A0A4656791395B8C8F8_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentTable_1B5B6827A73F5A0A4656791395B8C8F8" 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_1B5B6827A73F5A0A4656791395B8C8F8_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentTable_1B5B6827A73F5A0A4656791395B8C8F8" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DebtInstrumentTable" xlink:label="loc_us-gaap_DebtInstrumentTable_1B5B6827A73F5A0A4656791395B8C8F8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentTable_1B5B6827A73F5A0A4656791395B8C8F8" xlink:to="lab_us-gaap_DebtInstrumentTable_1B5B6827A73F5A0A4656791395B8C8F8" xlink:type="arc" />
    <link:label id="lab_us-gaap_VariableRateAxis_D68FB4409247BB3E1CC7791395B876C7_terseLabel_en-US" xlink:label="lab_us-gaap_VariableRateAxis_D68FB4409247BB3E1CC7791395B876C7" 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_D68FB4409247BB3E1CC7791395B876C7_label_en-US" xlink:label="lab_us-gaap_VariableRateAxis_D68FB4409247BB3E1CC7791395B876C7" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_VariableRateAxis" xlink:label="loc_us-gaap_VariableRateAxis_D68FB4409247BB3E1CC7791395B876C7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_VariableRateAxis_D68FB4409247BB3E1CC7791395B876C7" xlink:to="lab_us-gaap_VariableRateAxis_D68FB4409247BB3E1CC7791395B876C7" xlink:type="arc" />
    <link:label id="lab_us-gaap_VariableRateDomain_F04AE1CBCFA69C09C49D791395B8787F_terseLabel_en-US" xlink:label="lab_us-gaap_VariableRateDomain_F04AE1CBCFA69C09C49D791395B8787F" 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_F04AE1CBCFA69C09C49D791395B8787F_label_en-US" xlink:label="lab_us-gaap_VariableRateDomain_F04AE1CBCFA69C09C49D791395B8787F" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_VariableRateDomain" xlink:label="loc_us-gaap_VariableRateDomain_F04AE1CBCFA69C09C49D791395B8787F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_VariableRateDomain_F04AE1CBCFA69C09C49D791395B8787F" xlink:to="lab_us-gaap_VariableRateDomain_F04AE1CBCFA69C09C49D791395B8787F" xlink:type="arc" />
    <link:label id="lab_dy_FederalFundRateMember_E765C2AD3024C4C0F69B791395B90042_terseLabel_en-US" xlink:label="lab_dy_FederalFundRateMember_E765C2AD3024C4C0F69B791395B90042" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Federal Fund Rate [Member]</link:label>
    <link:label id="lab_dy_FederalFundRateMember_E765C2AD3024C4C0F69B791395B90042_label_en-US" xlink:label="lab_dy_FederalFundRateMember_E765C2AD3024C4C0F69B791395B90042" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Federal Fund Rate [Member]</link:label>
    <link:label id="lab_dy_FederalFundRateMember_E765C2AD3024C4C0F69B791395B90042_documentation_en-US" xlink:label="lab_dy_FederalFundRateMember_E765C2AD3024C4C0F69B791395B90042" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Federal Fund Rate [Member]</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_FederalFundRateMember" xlink:label="loc_dy_FederalFundRateMember_E765C2AD3024C4C0F69B791395B90042" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_FederalFundRateMember_E765C2AD3024C4C0F69B791395B90042" xlink:to="lab_dy_FederalFundRateMember_E765C2AD3024C4C0F69B791395B90042" xlink:type="arc" />
    <link:label id="lab_us-gaap_LondonInterbankOfferedRateLIBORMember_86080AC91A371201C96D791395B9BA5E_terseLabel_en-US" xlink:label="lab_us-gaap_LondonInterbankOfferedRateLIBORMember_86080AC91A371201C96D791395B9BA5E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">London Interbank Offered Rate (LIBOR) [Member]</link:label>
    <link:label id="lab_us-gaap_LondonInterbankOfferedRateLIBORMember_86080AC91A371201C96D791395B9BA5E_label_en-US" xlink:label="lab_us-gaap_LondonInterbankOfferedRateLIBORMember_86080AC91A371201C96D791395B9BA5E" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LondonInterbankOfferedRateLIBORMember" xlink:label="loc_us-gaap_LondonInterbankOfferedRateLIBORMember_86080AC91A371201C96D791395B9BA5E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LondonInterbankOfferedRateLIBORMember_86080AC91A371201C96D791395B9BA5E" xlink:to="lab_us-gaap_LondonInterbankOfferedRateLIBORMember_86080AC91A371201C96D791395B9BA5E" xlink:type="arc" />
    <link:label id="lab_us-gaap_EurodollarMember_82696EE52B6597D47FA0791395B94E4D_terseLabel_en-US" xlink:label="lab_us-gaap_EurodollarMember_82696EE52B6597D47FA0791395B94E4D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Eurodollar [Member]</link:label>
    <link:label id="lab_us-gaap_EurodollarMember_82696EE52B6597D47FA0791395B94E4D_label_en-US" xlink:label="lab_us-gaap_EurodollarMember_82696EE52B6597D47FA0791395B94E4D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Eurodollar [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_EurodollarMember" xlink:label="loc_us-gaap_EurodollarMember_82696EE52B6597D47FA0791395B94E4D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EurodollarMember_82696EE52B6597D47FA0791395B94E4D" xlink:to="lab_us-gaap_EurodollarMember_82696EE52B6597D47FA0791395B94E4D" xlink:type="arc" />
    <link:label id="lab_dy_AdministrativeAgentBaseRateMember_619A41DA8F218A68FC61791395B9425D_terseLabel_en-US" xlink:label="lab_dy_AdministrativeAgentBaseRateMember_619A41DA8F218A68FC61791395B9425D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Administrative Agent Base Rate [Member]</link:label>
    <link:label id="lab_dy_AdministrativeAgentBaseRateMember_619A41DA8F218A68FC61791395B9425D_label_en-US" xlink:label="lab_dy_AdministrativeAgentBaseRateMember_619A41DA8F218A68FC61791395B9425D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Administrative Agent Base Rate [Member]</link:label>
    <link:label id="lab_dy_AdministrativeAgentBaseRateMember_619A41DA8F218A68FC61791395B9425D_documentation_en-US" xlink:label="lab_dy_AdministrativeAgentBaseRateMember_619A41DA8F218A68FC61791395B9425D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Administrative Agent Base Rate [Member]</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_AdministrativeAgentBaseRateMember" xlink:label="loc_dy_AdministrativeAgentBaseRateMember_619A41DA8F218A68FC61791395B9425D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_AdministrativeAgentBaseRateMember_619A41DA8F218A68FC61791395B9425D" xlink:to="lab_dy_AdministrativeAgentBaseRateMember_619A41DA8F218A68FC61791395B9425D" xlink:type="arc" />
    <link:label id="lab_us-gaap_SeniorLoansMember_5921DB2B9E02429AF95B791395B90B20_terseLabel_en-US" xlink:label="lab_us-gaap_SeniorLoansMember_5921DB2B9E02429AF95B791395B90B20" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Credit Agreement - Term Loan (matures April 2020)</link:label>
    <link:label id="lab_us-gaap_SeniorLoansMember_5921DB2B9E02429AF95B791395B90B20_label_en-US" xlink:label="lab_us-gaap_SeniorLoansMember_5921DB2B9E02429AF95B791395B90B20" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Senior Loans [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SeniorLoansMember" xlink:label="loc_us-gaap_SeniorLoansMember_5921DB2B9E02429AF95B791395B90B20" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SeniorLoansMember_5921DB2B9E02429AF95B791395B90B20" xlink:to="lab_us-gaap_SeniorLoansMember_5921DB2B9E02429AF95B791395B90B20" xlink:type="arc" />
    <link:label id="lab_us-gaap_StandbyLettersOfCreditMember_B6EDAC2F70DCFF2642FF791395B93894_terseLabel_en-US" xlink:label="lab_us-gaap_StandbyLettersOfCreditMember_B6EDAC2F70DCFF2642FF791395B93894" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Standby Letters of Credit</link:label>
    <link:label id="lab_us-gaap_StandbyLettersOfCreditMember_B6EDAC2F70DCFF2642FF791395B93894_label_en-US" xlink:label="lab_us-gaap_StandbyLettersOfCreditMember_B6EDAC2F70DCFF2642FF791395B93894" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Standby Letters of Credit [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StandbyLettersOfCreditMember" xlink:label="loc_us-gaap_StandbyLettersOfCreditMember_B6EDAC2F70DCFF2642FF791395B93894" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StandbyLettersOfCreditMember_B6EDAC2F70DCFF2642FF791395B93894" xlink:to="lab_us-gaap_StandbyLettersOfCreditMember_B6EDAC2F70DCFF2642FF791395B93894" xlink:type="arc" />
    <link:label id="lab_us-gaap_RevolvingCreditFacilityMember_C6CB382C116AC40A6489791395B9D5D2_terseLabel_en-US" xlink:label="lab_us-gaap_RevolvingCreditFacilityMember_C6CB382C116AC40A6489791395B9D5D2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Credit Agreement - Revolving facility (matures April 2020)</link:label>
    <link:label id="lab_us-gaap_RevolvingCreditFacilityMember_C6CB382C116AC40A6489791395B9D5D2_label_en-US" xlink:label="lab_us-gaap_RevolvingCreditFacilityMember_C6CB382C116AC40A6489791395B9D5D2" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RevolvingCreditFacilityMember" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_C6CB382C116AC40A6489791395B9D5D2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RevolvingCreditFacilityMember_C6CB382C116AC40A6489791395B9D5D2" xlink:to="lab_us-gaap_RevolvingCreditFacilityMember_C6CB382C116AC40A6489791395B9D5D2" xlink:type="arc" />
    <link:label id="lab_dy_SevenPointOneTwoFivePercentSeniorSubordinatedNotesDue2021Member_83D4F55BD14A53F3EDC4791395BAF1A2_verboseLabel_en-US" xlink:label="lab_dy_SevenPointOneTwoFivePercentSeniorSubordinatedNotesDue2021Member_83D4F55BD14A53F3EDC4791395BAF1A2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">7.125% Senior Subordinated Notes Due 2021</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_SevenPointOneTwoFivePercentSeniorSubordinatedNotesDue2021Member" xlink:label="loc_dy_SevenPointOneTwoFivePercentSeniorSubordinatedNotesDue2021Member_83D4F55BD14A53F3EDC4791395BAF1A2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_SevenPointOneTwoFivePercentSeniorSubordinatedNotesDue2021Member_83D4F55BD14A53F3EDC4791395BAF1A2" xlink:to="lab_dy_SevenPointOneTwoFivePercentSeniorSubordinatedNotesDue2021Member_83D4F55BD14A53F3EDC4791395BAF1A2" xlink:type="arc" />
    <link:label id="lab_dy_CreditAgreementDecember32012MaturingDecember2017Member_12D65FDFCC7FB550491C791395BACEE0_terseLabel_en-US" xlink:label="lab_dy_CreditAgreementDecember32012MaturingDecember2017Member_12D65FDFCC7FB550491C791395BACEE0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Credit Agreement, December 3, 2012, Maturing December 2017</link:label>
    <link:label id="lab_dy_CreditAgreementDecember32012MaturingDecember2017Member_12D65FDFCC7FB550491C791395BACEE0_label_en-US" xlink:label="lab_dy_CreditAgreementDecember32012MaturingDecember2017Member_12D65FDFCC7FB550491C791395BACEE0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Credit Agreement, December 3, 2012, Maturing December 2017 [Member]</link:label>
    <link:label id="lab_dy_CreditAgreementDecember32012MaturingDecember2017Member_12D65FDFCC7FB550491C791395BACEE0_documentation_en-US" xlink:label="lab_dy_CreditAgreementDecember32012MaturingDecember2017Member_12D65FDFCC7FB550491C791395BACEE0" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Credit Agreement, December 3, 2012, Maturing December 2017 [Member]</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_CreditAgreementDecember32012MaturingDecember2017Member" xlink:label="loc_dy_CreditAgreementDecember32012MaturingDecember2017Member_12D65FDFCC7FB550491C791395BACEE0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_CreditAgreementDecember32012MaturingDecember2017Member_12D65FDFCC7FB550491C791395BACEE0" xlink:to="lab_dy_CreditAgreementDecember32012MaturingDecember2017Member_12D65FDFCC7FB550491C791395BACEE0" xlink:type="arc" />
    <link:label id="lab_dy_CreditAgreementMember_EF3B395582B1D8D3E0087915CC72C91C_terseLabel_en-US" xlink:label="lab_dy_CreditAgreementMember_EF3B395582B1D8D3E0087915CC72C91C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Credit Agreement [Member]</link:label>
    <link:label id="lab_dy_CreditAgreementMember_EF3B395582B1D8D3E0087915CC72C91C_label_en-US" xlink:label="lab_dy_CreditAgreementMember_EF3B395582B1D8D3E0087915CC72C91C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Credit Agreement [Member]</link:label>
    <link:label id="lab_dy_CreditAgreementMember_EF3B395582B1D8D3E0087915CC72C91C_documentation_en-US" xlink:label="lab_dy_CreditAgreementMember_EF3B395582B1D8D3E0087915CC72C91C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Credit Agreement [Member]</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_CreditAgreementMember" xlink:label="loc_dy_CreditAgreementMember_EF3B395582B1D8D3E0087915CC72C91C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_CreditAgreementMember_EF3B395582B1D8D3E0087915CC72C91C" xlink:to="lab_dy_CreditAgreementMember_EF3B395582B1D8D3E0087915CC72C91C" xlink:type="arc" />
    <link:label id="lab_us-gaap_CreditFacilityAxis_091CDF5220476EAF2459791395BA6B0D_terseLabel_en-US" xlink:label="lab_us-gaap_CreditFacilityAxis_091CDF5220476EAF2459791395BA6B0D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Credit Facility [Axis]</link:label>
    <link:label id="lab_us-gaap_CreditFacilityAxis_091CDF5220476EAF2459791395BA6B0D_label_en-US" xlink:label="lab_us-gaap_CreditFacilityAxis_091CDF5220476EAF2459791395BA6B0D" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CreditFacilityAxis" xlink:label="loc_us-gaap_CreditFacilityAxis_091CDF5220476EAF2459791395BA6B0D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CreditFacilityAxis_091CDF5220476EAF2459791395BA6B0D" xlink:to="lab_us-gaap_CreditFacilityAxis_091CDF5220476EAF2459791395BA6B0D" xlink:type="arc" />
    <link:label id="lab_us-gaap_CreditFacilityDomain_E90529AEBC85969DFF63791395BAF3FC_terseLabel_en-US" xlink:label="lab_us-gaap_CreditFacilityDomain_E90529AEBC85969DFF63791395BAF3FC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Credit Facility [Domain]</link:label>
    <link:label id="lab_us-gaap_CreditFacilityDomain_E90529AEBC85969DFF63791395BAF3FC_label_en-US" xlink:label="lab_us-gaap_CreditFacilityDomain_E90529AEBC85969DFF63791395BAF3FC" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CreditFacilityDomain" xlink:label="loc_us-gaap_CreditFacilityDomain_E90529AEBC85969DFF63791395BAF3FC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CreditFacilityDomain_E90529AEBC85969DFF63791395BAF3FC" xlink:to="lab_us-gaap_CreditFacilityDomain_E90529AEBC85969DFF63791395BAF3FC" xlink:type="arc" />
    <link:label id="lab_dy_SwinglineLoansMember_DA870EA66A2EAE42B13E791395BAB045_terseLabel_en-US" xlink:label="lab_dy_SwinglineLoansMember_DA870EA66A2EAE42B13E791395BAB045" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Swingline Loans</link:label>
    <link:label id="lab_dy_SwinglineLoansMember_DA870EA66A2EAE42B13E791395BAB045_label_en-US" xlink:label="lab_dy_SwinglineLoansMember_DA870EA66A2EAE42B13E791395BAB045" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Swingline Loans [Member]</link:label>
    <link:label id="lab_dy_SwinglineLoansMember_DA870EA66A2EAE42B13E791395BAB045_documentation_en-US" xlink:label="lab_dy_SwinglineLoansMember_DA870EA66A2EAE42B13E791395BAB045" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Swingline Loans [Member]</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_SwinglineLoansMember" xlink:label="loc_dy_SwinglineLoansMember_DA870EA66A2EAE42B13E791395BAB045" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_SwinglineLoansMember_DA870EA66A2EAE42B13E791395BAB045" xlink:to="lab_dy_SwinglineLoansMember_DA870EA66A2EAE42B13E791395BAB045" xlink:type="arc" />
    <link:label id="lab_dy_CommercialLettersofCreditMember_6FFAFFB8D90352348056791395BABC99_terseLabel_en-US" xlink:label="lab_dy_CommercialLettersofCreditMember_6FFAFFB8D90352348056791395BABC99" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Commercial Letters of Credit</link:label>
    <link:label id="lab_dy_CommercialLettersofCreditMember_6FFAFFB8D90352348056791395BABC99_label_en-US" xlink:label="lab_dy_CommercialLettersofCreditMember_6FFAFFB8D90352348056791395BABC99" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Commercial Letters of Credit [Member]</link:label>
    <link:label id="lab_dy_CommercialLettersofCreditMember_6FFAFFB8D90352348056791395BABC99_documentation_en-US" xlink:label="lab_dy_CommercialLettersofCreditMember_6FFAFFB8D90352348056791395BABC99" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Commercial Letters of Credit [Member]</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_CommercialLettersofCreditMember" xlink:label="loc_dy_CommercialLettersofCreditMember_6FFAFFB8D90352348056791395BABC99" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_CommercialLettersofCreditMember_6FFAFFB8D90352348056791395BABC99" xlink:to="lab_dy_CommercialLettersofCreditMember_6FFAFFB8D90352348056791395BABC99" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentLineItems_FE196343F709C573FDE4791395BB626C_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentLineItems_FE196343F709C573FDE4791395BB626C" 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_FE196343F709C573FDE4791395BB626C_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentLineItems_FE196343F709C573FDE4791395BB626C" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:label="loc_us-gaap_DebtInstrumentLineItems_FE196343F709C573FDE4791395BB626C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentLineItems_FE196343F709C573FDE4791395BB626C" xlink:to="lab_us-gaap_DebtInstrumentLineItems_FE196343F709C573FDE4791395BB626C" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_9BEA02AFAAF0FCD1B16C791395BB413E_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_9BEA02AFAAF0FCD1B16C791395BB413E" 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_9BEA02AFAAF0FCD1B16C791395BB413E_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_9BEA02AFAAF0FCD1B16C791395BB413E" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_9BEA02AFAAF0FCD1B16C791395BB413E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_9BEA02AFAAF0FCD1B16C791395BB413E" xlink:to="lab_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_9BEA02AFAAF0FCD1B16C791395BB413E" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtAndCapitalLeaseObligations_26A8CCC795D1F040B654791395BB4485_verboseLabel_en-US" xlink:label="lab_us-gaap_DebtAndCapitalLeaseObligations_26A8CCC795D1F040B654791395BB4485" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Debt and capital lease obligations</link:label>
    <link:label id="lab_us-gaap_DebtAndCapitalLeaseObligations_26A8CCC795D1F040B654791395BB4485_label_en-US" xlink:label="lab_us-gaap_DebtAndCapitalLeaseObligations_26A8CCC795D1F040B654791395BB4485" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DebtAndCapitalLeaseObligations" xlink:label="loc_us-gaap_DebtAndCapitalLeaseObligations_26A8CCC795D1F040B654791395BB4485" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtAndCapitalLeaseObligations_26A8CCC795D1F040B654791395BB4485" xlink:to="lab_us-gaap_DebtAndCapitalLeaseObligations_26A8CCC795D1F040B654791395BB4485" xlink:type="arc" />
    <link:label id="lab_us-gaap_LongTermDebtFairValue_16C37B6C8F1B18408D04791395BB6129_verboseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtFairValue_16C37B6C8F1B18408D04791395BB6129" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Long-term debt, fair value</link:label>
    <link:label id="lab_us-gaap_LongTermDebtFairValue_16C37B6C8F1B18408D04791395BB6129_label_en-US" xlink:label="lab_us-gaap_LongTermDebtFairValue_16C37B6C8F1B18408D04791395BB6129" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Debt, Fair Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LongTermDebtFairValue" xlink:label="loc_us-gaap_LongTermDebtFairValue_16C37B6C8F1B18408D04791395BB6129" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtFairValue_16C37B6C8F1B18408D04791395BB6129" xlink:to="lab_us-gaap_LongTermDebtFairValue_16C37B6C8F1B18408D04791395BB6129" xlink:type="arc" />
    <link:label id="lab_us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_E5B0B54FD8B502F94C11791395BB0E1D_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_E5B0B54FD8B502F94C11791395BB0E1D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Line of credit current borrowing capacity</link:label>
    <link:label id="lab_us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_E5B0B54FD8B502F94C11791395BB0E1D_label_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_E5B0B54FD8B502F94C11791395BB0E1D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Line of Credit Facility, Current Borrowing Capacity</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity" xlink:label="loc_us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_E5B0B54FD8B502F94C11791395BB0E1D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_E5B0B54FD8B502F94C11791395BB0E1D" xlink:to="lab_us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_E5B0B54FD8B502F94C11791395BB0E1D" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentFaceAmount_5FDD5E57D9CEC5A86892791395BBA504_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentFaceAmount_5FDD5E57D9CEC5A86892791395BBA504" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Credit facility amount</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentFaceAmount_5FDD5E57D9CEC5A86892791395BBA504_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentFaceAmount_5FDD5E57D9CEC5A86892791395BBA504" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DebtInstrumentFaceAmount" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_5FDD5E57D9CEC5A86892791395BBA504" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentFaceAmount_5FDD5E57D9CEC5A86892791395BBA504" xlink:to="lab_us-gaap_DebtInstrumentFaceAmount_5FDD5E57D9CEC5A86892791395BBA504" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentInterestRateEffectivePercentage_A191A487E35000F35FC9791395BB59BF_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateEffectivePercentage_A191A487E35000F35FC9791395BB59BF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt Instrument, Interest Rate at Period End</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentInterestRateEffectivePercentage_A191A487E35000F35FC9791395BB59BF_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateEffectivePercentage_A191A487E35000F35FC9791395BB59BF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Interest Rate, Effective Percentage</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DebtInstrumentInterestRateEffectivePercentage" xlink:label="loc_us-gaap_DebtInstrumentInterestRateEffectivePercentage_A191A487E35000F35FC9791395BB59BF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentInterestRateEffectivePercentage_A191A487E35000F35FC9791395BB59BF" xlink:to="lab_us-gaap_DebtInstrumentInterestRateEffectivePercentage_A191A487E35000F35FC9791395BB59BF" xlink:type="arc" />
    <link:label id="lab_us-gaap_LettersOfCreditOutstandingAmount_52736747559F9F14ACC7791395BB16DE_terseLabel_en-US" xlink:label="lab_us-gaap_LettersOfCreditOutstandingAmount_52736747559F9F14ACC7791395BB16DE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Letters of credit outstanding amount</link:label>
    <link:label id="lab_us-gaap_LettersOfCreditOutstandingAmount_52736747559F9F14ACC7791395BB16DE_label_en-US" xlink:label="lab_us-gaap_LettersOfCreditOutstandingAmount_52736747559F9F14ACC7791395BB16DE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Letters of Credit Outstanding, Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LettersOfCreditOutstandingAmount" xlink:label="loc_us-gaap_LettersOfCreditOutstandingAmount_52736747559F9F14ACC7791395BB16DE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LettersOfCreditOutstandingAmount_52736747559F9F14ACC7791395BB16DE" xlink:to="lab_us-gaap_LettersOfCreditOutstandingAmount_52736747559F9F14ACC7791395BB16DE" xlink:type="arc" />
    <link:label id="lab_us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage_39EE9CAFD6EC44999499791395BB73CD_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage_39EE9CAFD6EC44999499791395BB73CD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unutilized commitment fee (in percent)</link:label>
    <link:label id="lab_us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage_39EE9CAFD6EC44999499791395BB73CD_label_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage_39EE9CAFD6EC44999499791395BB73CD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Line of Credit Facility, Unused Capacity, Commitment Fee Percentage</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage" xlink:label="loc_us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage_39EE9CAFD6EC44999499791395BB73CD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage_39EE9CAFD6EC44999499791395BB73CD" xlink:to="lab_us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage_39EE9CAFD6EC44999499791395BB73CD" xlink:type="arc" />
    <link:label id="lab_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_27419EEAF8A1E7D8D1F3791395BBB5EA_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_27419EEAF8A1E7D8D1F3791395BBB5EA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Additional borrowing availability</link:label>
    <link:label id="lab_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_27419EEAF8A1E7D8D1F3791395BBB5EA_label_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_27419EEAF8A1E7D8D1F3791395BBB5EA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Line of Credit Facility, Remaining Borrowing Capacity</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity" xlink:label="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_27419EEAF8A1E7D8D1F3791395BBB5EA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_27419EEAF8A1E7D8D1F3791395BBB5EA" xlink:to="lab_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_27419EEAF8A1E7D8D1F3791395BBB5EA" xlink:type="arc" />
    <link:label id="lab_dy_LineofCreditFacilityIncrementalAdditionalFacilitiesOptionAmount_6693D1EA71B8D1F40DD6791395BC362D_terseLabel_en-US" xlink:label="lab_dy_LineofCreditFacilityIncrementalAdditionalFacilitiesOptionAmount_6693D1EA71B8D1F40DD6791395BC362D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Line of Credit Facility Incremental Additional Facilities Option Amount</link:label>
    <link:label id="lab_dy_LineofCreditFacilityIncrementalAdditionalFacilitiesOptionAmount_6693D1EA71B8D1F40DD6791395BC362D_label_en-US" xlink:label="lab_dy_LineofCreditFacilityIncrementalAdditionalFacilitiesOptionAmount_6693D1EA71B8D1F40DD6791395BC362D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Line of Credit Facility Incremental Additional Facilities Option Amount</link:label>
    <link:label id="lab_dy_LineofCreditFacilityIncrementalAdditionalFacilitiesOptionAmount_6693D1EA71B8D1F40DD6791395BC362D_documentation_en-US" xlink:label="lab_dy_LineofCreditFacilityIncrementalAdditionalFacilitiesOptionAmount_6693D1EA71B8D1F40DD6791395BC362D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Line of Credit Facility Incremental Additional Facilities Option Amount</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_LineofCreditFacilityIncrementalAdditionalFacilitiesOptionAmount" xlink:label="loc_dy_LineofCreditFacilityIncrementalAdditionalFacilitiesOptionAmount_6693D1EA71B8D1F40DD6791395BC362D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_LineofCreditFacilityIncrementalAdditionalFacilitiesOptionAmount_6693D1EA71B8D1F40DD6791395BC362D" xlink:to="lab_dy_LineofCreditFacilityIncrementalAdditionalFacilitiesOptionAmount_6693D1EA71B8D1F40DD6791395BC362D" xlink:type="arc" />
    <link:label id="lab_dy_DebtInstrumentCovenantComplianceConsolidatedLeverageRatioMaximum_D552A5F9CB2ACEB43694791395BC51FE_terseLabel_en-US" xlink:label="lab_dy_DebtInstrumentCovenantComplianceConsolidatedLeverageRatioMaximum_D552A5F9CB2ACEB43694791395BC51FE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt covenant compliance, consolidated leverage maximum (ratio)</link:label>
    <link:label id="lab_dy_DebtInstrumentCovenantComplianceConsolidatedLeverageRatioMaximum_D552A5F9CB2ACEB43694791395BC51FE_label_en-US" xlink:label="lab_dy_DebtInstrumentCovenantComplianceConsolidatedLeverageRatioMaximum_D552A5F9CB2ACEB43694791395BC51FE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Covenant Compliance, Consolidated Leverage Ratio, Maximum</link:label>
    <link:label id="lab_dy_DebtInstrumentCovenantComplianceConsolidatedLeverageRatioMaximum_D552A5F9CB2ACEB43694791395BC51FE_documentation_en-US" xlink:label="lab_dy_DebtInstrumentCovenantComplianceConsolidatedLeverageRatioMaximum_D552A5F9CB2ACEB43694791395BC51FE" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Debt Instrument, Covenant Compliance, Consolidated Leverage Ratio, Maximum</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_DebtInstrumentCovenantComplianceConsolidatedLeverageRatioMaximum" xlink:label="loc_dy_DebtInstrumentCovenantComplianceConsolidatedLeverageRatioMaximum_D552A5F9CB2ACEB43694791395BC51FE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_DebtInstrumentCovenantComplianceConsolidatedLeverageRatioMaximum_D552A5F9CB2ACEB43694791395BC51FE" xlink:to="lab_dy_DebtInstrumentCovenantComplianceConsolidatedLeverageRatioMaximum_D552A5F9CB2ACEB43694791395BC51FE" xlink:type="arc" />
    <link:label id="lab_us-gaap_CondensedFinancialInformationOfParentCompanyOnlyDisclosureAbstract_EDC5A5C7D044B137B25A700C46765DDD_label_en-US" xlink:label="lab_us-gaap_CondensedFinancialInformationOfParentCompanyOnlyDisclosureAbstract_EDC5A5C7D044B137B25A700C46765DDD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Condensed Financial Information of Parent Company Only Disclosure [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CondensedFinancialInformationOfParentCompanyOnlyDisclosureAbstract" xlink:label="loc_us-gaap_CondensedFinancialInformationOfParentCompanyOnlyDisclosureAbstract_EDC5A5C7D044B137B25A700C46765DDD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CondensedFinancialInformationOfParentCompanyOnlyDisclosureAbstract_EDC5A5C7D044B137B25A700C46765DDD" xlink:to="lab_us-gaap_CondensedFinancialInformationOfParentCompanyOnlyDisclosureAbstract_EDC5A5C7D044B137B25A700C46765DDD" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtAndCapitalLeaseObligations_2061474F8CA5AC5A212B700C46760251_terseLabel_en-US" xlink:label="lab_us-gaap_DebtAndCapitalLeaseObligations_2061474F8CA5AC5A212B700C46760251" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt and capital lease obligations</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DebtAndCapitalLeaseObligations" xlink:label="loc_us-gaap_DebtAndCapitalLeaseObligations_2061474F8CA5AC5A212B700C46760251" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtAndCapitalLeaseObligations_2061474F8CA5AC5A212B700C46760251" xlink:to="lab_us-gaap_DebtAndCapitalLeaseObligations_2061474F8CA5AC5A212B700C46760251" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfCondensedBalanceSheetTableTextBlock_241BC53E447793371544700C463717D4_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfCondensedBalanceSheetTableTextBlock_241BC53E447793371544700C463717D4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Condensed Balance Sheet</link:label>
    <link:label id="lab_us-gaap_ScheduleOfCondensedBalanceSheetTableTextBlock_241BC53E447793371544700C463717D4_label_en-US" xlink:label="lab_us-gaap_ScheduleOfCondensedBalanceSheetTableTextBlock_241BC53E447793371544700C463717D4" 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/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ScheduleOfCondensedBalanceSheetTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfCondensedBalanceSheetTableTextBlock_241BC53E447793371544700C463717D4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfCondensedBalanceSheetTableTextBlock_241BC53E447793371544700C463717D4" xlink:to="lab_us-gaap_ScheduleOfCondensedBalanceSheetTableTextBlock_241BC53E447793371544700C463717D4" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfCondensedIncomeStatementTableTextBlock_BFFB0580CDFC2C4614EE700C4637EB53_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfCondensedIncomeStatementTableTextBlock_BFFB0580CDFC2C4614EE700C4637EB53" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Condensed Income Statement</link:label>
    <link:label id="lab_us-gaap_ScheduleOfCondensedIncomeStatementTableTextBlock_BFFB0580CDFC2C4614EE700C4637EB53_label_en-US" xlink:label="lab_us-gaap_ScheduleOfCondensedIncomeStatementTableTextBlock_BFFB0580CDFC2C4614EE700C4637EB53" 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/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ScheduleOfCondensedIncomeStatementTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfCondensedIncomeStatementTableTextBlock_BFFB0580CDFC2C4614EE700C4637EB53" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfCondensedIncomeStatementTableTextBlock_BFFB0580CDFC2C4614EE700C4637EB53" xlink:to="lab_us-gaap_ScheduleOfCondensedIncomeStatementTableTextBlock_BFFB0580CDFC2C4614EE700C4637EB53" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfCondensedCashFlowStatementTableTextBlock_2F2217975EA43FA63051700C4637D23A_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfCondensedCashFlowStatementTableTextBlock_2F2217975EA43FA63051700C4637D23A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Condensed Cash Flow Statement</link:label>
    <link:label id="lab_us-gaap_ScheduleOfCondensedCashFlowStatementTableTextBlock_2F2217975EA43FA63051700C4637D23A_label_en-US" xlink:label="lab_us-gaap_ScheduleOfCondensedCashFlowStatementTableTextBlock_2F2217975EA43FA63051700C4637D23A" 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/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ScheduleOfCondensedCashFlowStatementTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfCondensedCashFlowStatementTableTextBlock_2F2217975EA43FA63051700C4637D23A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfCondensedCashFlowStatementTableTextBlock_2F2217975EA43FA63051700C4637D23A" xlink:to="lab_us-gaap_ScheduleOfCondensedCashFlowStatementTableTextBlock_2F2217975EA43FA63051700C4637D23A" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfDebtTableTextBlock_6138A3352FFCFC7E2A0A700C46E35431_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfDebtTableTextBlock_6138A3352FFCFC7E2A0A700C46E35431" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Outstanding Indebtedness</link:label>
    <link:label id="lab_us-gaap_ScheduleOfDebtTableTextBlock_6138A3352FFCFC7E2A0A700C46E35431_label_en-US" xlink:label="lab_us-gaap_ScheduleOfDebtTableTextBlock_6138A3352FFCFC7E2A0A700C46E35431" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Debt [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ScheduleOfDebtTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfDebtTableTextBlock_6138A3352FFCFC7E2A0A700C46E35431" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfDebtTableTextBlock_6138A3352FFCFC7E2A0A700C46E35431" xlink:to="lab_us-gaap_ScheduleOfDebtTableTextBlock_6138A3352FFCFC7E2A0A700C46E35431" xlink:type="arc" />
    <link:label id="lab_dy_DocumentAndEntityInformationAbstract_45333CE7C640CBBD7D20700C46E343E4_label_en-US" xlink:label="lab_dy_DocumentAndEntityInformationAbstract_45333CE7C640CBBD7D20700C46E343E4" 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_dy_DocumentAndEntityInformationAbstract_45333CE7C640CBBD7D20700C46E343E4_documentation_en-US" xlink:label="lab_dy_DocumentAndEntityInformationAbstract_45333CE7C640CBBD7D20700C46E343E4" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US" />
    <link:loc xlink:href="dy-20150425.xsd#dy_DocumentAndEntityInformationAbstract" xlink:label="loc_dy_DocumentAndEntityInformationAbstract_45333CE7C640CBBD7D20700C46E343E4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_DocumentAndEntityInformationAbstract_45333CE7C640CBBD7D20700C46E343E4" xlink:to="lab_dy_DocumentAndEntityInformationAbstract_45333CE7C640CBBD7D20700C46E343E4" xlink:type="arc" />
    <link:label id="lab_dei_EntityRegistrantName_D09049C5261FD00029FE700C46E3ABD4_terseLabel_en-US" xlink:label="lab_dei_EntityRegistrantName_D09049C5261FD00029FE700C46E3ABD4" 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_D09049C5261FD00029FE700C46E3ABD4_label_en-US" xlink:label="lab_dei_EntityRegistrantName_D09049C5261FD00029FE700C46E3ABD4" 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="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityRegistrantName" xlink:label="loc_dei_EntityRegistrantName_D09049C5261FD00029FE700C46E3ABD4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityRegistrantName_D09049C5261FD00029FE700C46E3ABD4" xlink:to="lab_dei_EntityRegistrantName_D09049C5261FD00029FE700C46E3ABD4" xlink:type="arc" />
    <link:label id="lab_dei_EntityCentralIndexKey_D5DDA523FDDCEBAA74BA700C46E3A75C_terseLabel_en-US" xlink:label="lab_dei_EntityCentralIndexKey_D5DDA523FDDCEBAA74BA700C46E3A75C" 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_D5DDA523FDDCEBAA74BA700C46E3A75C_label_en-US" xlink:label="lab_dei_EntityCentralIndexKey_D5DDA523FDDCEBAA74BA700C46E3A75C" 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="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityCentralIndexKey" xlink:label="loc_dei_EntityCentralIndexKey_D5DDA523FDDCEBAA74BA700C46E3A75C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityCentralIndexKey_D5DDA523FDDCEBAA74BA700C46E3A75C" xlink:to="lab_dei_EntityCentralIndexKey_D5DDA523FDDCEBAA74BA700C46E3A75C" xlink:type="arc" />
    <link:label id="lab_dei_CurrentFiscalYearEndDate_331EDF094F4BB9C4B810700C46E33956_terseLabel_en-US" xlink:label="lab_dei_CurrentFiscalYearEndDate_331EDF094F4BB9C4B810700C46E33956" 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_331EDF094F4BB9C4B810700C46E33956_label_en-US" xlink:label="lab_dei_CurrentFiscalYearEndDate_331EDF094F4BB9C4B810700C46E33956" 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="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_CurrentFiscalYearEndDate" xlink:label="loc_dei_CurrentFiscalYearEndDate_331EDF094F4BB9C4B810700C46E33956" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_CurrentFiscalYearEndDate_331EDF094F4BB9C4B810700C46E33956" xlink:to="lab_dei_CurrentFiscalYearEndDate_331EDF094F4BB9C4B810700C46E33956" xlink:type="arc" />
    <link:label id="lab_dei_EntityWellKnownSeasonedIssuer_416354A20AC9A38B60D8700C46E39F37_terseLabel_en-US" xlink:label="lab_dei_EntityWellKnownSeasonedIssuer_416354A20AC9A38B60D8700C46E39F37" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Well-known Seasoned Issuer</link:label>
    <link:label id="lab_dei_EntityWellKnownSeasonedIssuer_416354A20AC9A38B60D8700C46E39F37_label_en-US" xlink:label="lab_dei_EntityWellKnownSeasonedIssuer_416354A20AC9A38B60D8700C46E39F37" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Well-known Seasoned Issuer</link:label>
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityWellKnownSeasonedIssuer" xlink:label="loc_dei_EntityWellKnownSeasonedIssuer_416354A20AC9A38B60D8700C46E39F37" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityWellKnownSeasonedIssuer_416354A20AC9A38B60D8700C46E39F37" xlink:to="lab_dei_EntityWellKnownSeasonedIssuer_416354A20AC9A38B60D8700C46E39F37" xlink:type="arc" />
    <link:label id="lab_dei_EntityVoluntaryFilers_C282EF5B61A5096FCE0A700C46E3E6DE_terseLabel_en-US" xlink:label="lab_dei_EntityVoluntaryFilers_C282EF5B61A5096FCE0A700C46E3E6DE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Voluntary Filers</link:label>
    <link:label id="lab_dei_EntityVoluntaryFilers_C282EF5B61A5096FCE0A700C46E3E6DE_label_en-US" xlink:label="lab_dei_EntityVoluntaryFilers_C282EF5B61A5096FCE0A700C46E3E6DE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Voluntary Filers</link:label>
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityVoluntaryFilers" xlink:label="loc_dei_EntityVoluntaryFilers_C282EF5B61A5096FCE0A700C46E3E6DE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityVoluntaryFilers_C282EF5B61A5096FCE0A700C46E3E6DE" xlink:to="lab_dei_EntityVoluntaryFilers_C282EF5B61A5096FCE0A700C46E3E6DE" xlink:type="arc" />
    <link:label id="lab_dei_EntityCurrentReportingStatus_41D6A63CB09DB4E4A311700C46E39CCD_terseLabel_en-US" xlink:label="lab_dei_EntityCurrentReportingStatus_41D6A63CB09DB4E4A311700C46E39CCD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Current Reporting Status</link:label>
    <link:label id="lab_dei_EntityCurrentReportingStatus_41D6A63CB09DB4E4A311700C46E39CCD_label_en-US" xlink:label="lab_dei_EntityCurrentReportingStatus_41D6A63CB09DB4E4A311700C46E39CCD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Current Reporting Status</link:label>
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityCurrentReportingStatus" xlink:label="loc_dei_EntityCurrentReportingStatus_41D6A63CB09DB4E4A311700C46E39CCD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityCurrentReportingStatus_41D6A63CB09DB4E4A311700C46E39CCD" xlink:to="lab_dei_EntityCurrentReportingStatus_41D6A63CB09DB4E4A311700C46E39CCD" xlink:type="arc" />
    <link:label id="lab_dei_EntityFilerCategory_CA932915C695B56C4A46700C46E3B183_terseLabel_en-US" xlink:label="lab_dei_EntityFilerCategory_CA932915C695B56C4A46700C46E3B183" 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_CA932915C695B56C4A46700C46E3B183_label_en-US" xlink:label="lab_dei_EntityFilerCategory_CA932915C695B56C4A46700C46E3B183" 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="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityFilerCategory" xlink:label="loc_dei_EntityFilerCategory_CA932915C695B56C4A46700C46E3B183" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityFilerCategory_CA932915C695B56C4A46700C46E3B183" xlink:to="lab_dei_EntityFilerCategory_CA932915C695B56C4A46700C46E3B183" xlink:type="arc" />
    <link:label id="lab_dei_EntityCommonStockSharesOutstanding_1398B99DBC5910253E35700C46E32413_terseLabel_en-US" xlink:label="lab_dei_EntityCommonStockSharesOutstanding_1398B99DBC5910253E35700C46E32413" 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_1398B99DBC5910253E35700C46E32413_label_en-US" xlink:label="lab_dei_EntityCommonStockSharesOutstanding_1398B99DBC5910253E35700C46E32413" 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="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityCommonStockSharesOutstanding" xlink:label="loc_dei_EntityCommonStockSharesOutstanding_1398B99DBC5910253E35700C46E32413" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityCommonStockSharesOutstanding_1398B99DBC5910253E35700C46E32413" xlink:to="lab_dei_EntityCommonStockSharesOutstanding_1398B99DBC5910253E35700C46E32413" xlink:type="arc" />
    <link:label id="lab_dei_DocumentFiscalYearFocus_43BA9132A951E6E0D51F700C46E3F40A_terseLabel_en-US" xlink:label="lab_dei_DocumentFiscalYearFocus_43BA9132A951E6E0D51F700C46E3F40A" 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_43BA9132A951E6E0D51F700C46E3F40A_label_en-US" xlink:label="lab_dei_DocumentFiscalYearFocus_43BA9132A951E6E0D51F700C46E3F40A" 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="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_DocumentFiscalYearFocus" xlink:label="loc_dei_DocumentFiscalYearFocus_43BA9132A951E6E0D51F700C46E3F40A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentFiscalYearFocus_43BA9132A951E6E0D51F700C46E3F40A" xlink:to="lab_dei_DocumentFiscalYearFocus_43BA9132A951E6E0D51F700C46E3F40A" xlink:type="arc" />
    <link:label id="lab_dei_DocumentFiscalPeriodFocus_9E5BC62A71B3B3E597D3700C46E303A0_terseLabel_en-US" xlink:label="lab_dei_DocumentFiscalPeriodFocus_9E5BC62A71B3B3E597D3700C46E303A0" 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_9E5BC62A71B3B3E597D3700C46E303A0_label_en-US" xlink:label="lab_dei_DocumentFiscalPeriodFocus_9E5BC62A71B3B3E597D3700C46E303A0" 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="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_DocumentFiscalPeriodFocus" xlink:label="loc_dei_DocumentFiscalPeriodFocus_9E5BC62A71B3B3E597D3700C46E303A0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentFiscalPeriodFocus_9E5BC62A71B3B3E597D3700C46E303A0" xlink:to="lab_dei_DocumentFiscalPeriodFocus_9E5BC62A71B3B3E597D3700C46E303A0" xlink:type="arc" />
    <link:label id="lab_dei_DocumentType_44681836485C95F7A587700C46E3F1ED_terseLabel_en-US" xlink:label="lab_dei_DocumentType_44681836485C95F7A587700C46E3F1ED" 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_44681836485C95F7A587700C46E3F1ED_label_en-US" xlink:label="lab_dei_DocumentType_44681836485C95F7A587700C46E3F1ED" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Document Type</link:label>
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_DocumentType" xlink:label="loc_dei_DocumentType_44681836485C95F7A587700C46E3F1ED" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentType_44681836485C95F7A587700C46E3F1ED" xlink:to="lab_dei_DocumentType_44681836485C95F7A587700C46E3F1ED" xlink:type="arc" />
    <link:label id="lab_dei_AmendmentFlag_11D3E6DCA1DD47BEB5F4700C46E343BC_terseLabel_en-US" xlink:label="lab_dei_AmendmentFlag_11D3E6DCA1DD47BEB5F4700C46E343BC" 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_11D3E6DCA1DD47BEB5F4700C46E343BC_label_en-US" xlink:label="lab_dei_AmendmentFlag_11D3E6DCA1DD47BEB5F4700C46E343BC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Amendment Flag</link:label>
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_AmendmentFlag" xlink:label="loc_dei_AmendmentFlag_11D3E6DCA1DD47BEB5F4700C46E343BC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_AmendmentFlag_11D3E6DCA1DD47BEB5F4700C46E343BC" xlink:to="lab_dei_AmendmentFlag_11D3E6DCA1DD47BEB5F4700C46E343BC" xlink:type="arc" />
    <link:label id="lab_dei_DocumentPeriodEndDate_B575C89CFD58BC610BAC700C46E373E2_terseLabel_en-US" xlink:label="lab_dei_DocumentPeriodEndDate_B575C89CFD58BC610BAC700C46E373E2" 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_B575C89CFD58BC610BAC700C46E373E2_label_en-US" xlink:label="lab_dei_DocumentPeriodEndDate_B575C89CFD58BC610BAC700C46E373E2" 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="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_DocumentPeriodEndDate" xlink:label="loc_dei_DocumentPeriodEndDate_B575C89CFD58BC610BAC700C46E373E2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentPeriodEndDate_B575C89CFD58BC610BAC700C46E373E2" xlink:to="lab_dei_DocumentPeriodEndDate_B575C89CFD58BC610BAC700C46E373E2" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingLossCarryforwardsTable_7A23722278A48DDE876A700C471212BA_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLossCarryforwardsTable_7A23722278A48DDE876A700C471212BA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Operating Loss Carryforwards [Table]</link:label>
    <link:label id="lab_us-gaap_OperatingLossCarryforwardsTable_7A23722278A48DDE876A700C471212BA_label_en-US" xlink:label="lab_us-gaap_OperatingLossCarryforwardsTable_7A23722278A48DDE876A700C471212BA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Loss Carryforwards [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OperatingLossCarryforwardsTable" xlink:label="loc_us-gaap_OperatingLossCarryforwardsTable_7A23722278A48DDE876A700C471212BA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLossCarryforwardsTable_7A23722278A48DDE876A700C471212BA" xlink:to="lab_us-gaap_OperatingLossCarryforwardsTable_7A23722278A48DDE876A700C471212BA" xlink:type="arc" />
    <link:label id="lab_us-gaap_BalanceSheetLocationAxis_C28276F4BC4F1B9492B0700C47124123_terseLabel_en-US" xlink:label="lab_us-gaap_BalanceSheetLocationAxis_C28276F4BC4F1B9492B0700C47124123" 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_C28276F4BC4F1B9492B0700C47124123_label_en-US" xlink:label="lab_us-gaap_BalanceSheetLocationAxis_C28276F4BC4F1B9492B0700C47124123" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_BalanceSheetLocationAxis" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_C28276F4BC4F1B9492B0700C47124123" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_C28276F4BC4F1B9492B0700C47124123" xlink:to="lab_us-gaap_BalanceSheetLocationAxis_C28276F4BC4F1B9492B0700C47124123" xlink:type="arc" />
    <link:label id="lab_us-gaap_BalanceSheetLocationDomain_0DDD178282E502B4A7E3700C471260A3_terseLabel_en-US" xlink:label="lab_us-gaap_BalanceSheetLocationDomain_0DDD178282E502B4A7E3700C471260A3" 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_0DDD178282E502B4A7E3700C471260A3_label_en-US" xlink:label="lab_us-gaap_BalanceSheetLocationDomain_0DDD178282E502B4A7E3700C471260A3" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_0DDD178282E502B4A7E3700C471260A3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_0DDD178282E502B4A7E3700C471260A3" xlink:to="lab_us-gaap_BalanceSheetLocationDomain_0DDD178282E502B4A7E3700C471260A3" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherAssetsMember_54E1147474DC61762692700C47125AB3_terseLabel_en-US" xlink:label="lab_us-gaap_OtherAssetsMember_54E1147474DC61762692700C47125AB3" 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_OtherAssetsMember_54E1147474DC61762692700C47125AB3_label_en-US" xlink:label="lab_us-gaap_OtherAssetsMember_54E1147474DC61762692700C47125AB3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Assets [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherAssetsMember" xlink:label="loc_us-gaap_OtherAssetsMember_54E1147474DC61762692700C47125AB3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherAssetsMember_54E1147474DC61762692700C47125AB3" xlink:to="lab_us-gaap_OtherAssetsMember_54E1147474DC61762692700C47125AB3" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingLossCarryforwardsLineItems_A5763B15BEA9E4180F02700C471225D5_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLossCarryforwardsLineItems_A5763B15BEA9E4180F02700C471225D5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Operating Loss Carryforwards [Line Items]</link:label>
    <link:label id="lab_us-gaap_OperatingLossCarryforwardsLineItems_A5763B15BEA9E4180F02700C471225D5_label_en-US" xlink:label="lab_us-gaap_OperatingLossCarryforwardsLineItems_A5763B15BEA9E4180F02700C471225D5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Loss Carryforwards [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OperatingLossCarryforwardsLineItems" xlink:label="loc_us-gaap_OperatingLossCarryforwardsLineItems_A5763B15BEA9E4180F02700C471225D5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_A5763B15BEA9E4180F02700C471225D5" xlink:to="lab_us-gaap_OperatingLossCarryforwardsLineItems_A5763B15BEA9E4180F02700C471225D5" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncomeTaxesReceivable_60164F56EE0EBE1D7A34700C4712600C_verboseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxesReceivable_60164F56EE0EBE1D7A34700C4712600C" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Income taxes receivable</link:label>
    <link:label id="lab_us-gaap_IncomeTaxesReceivable_60164F56EE0EBE1D7A34700C4712600C_label_en-US" xlink:label="lab_us-gaap_IncomeTaxesReceivable_60164F56EE0EBE1D7A34700C4712600C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Taxes Receivable, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncomeTaxesReceivable" xlink:label="loc_us-gaap_IncomeTaxesReceivable_60164F56EE0EBE1D7A34700C4712600C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeTaxesReceivable_60164F56EE0EBE1D7A34700C4712600C" xlink:to="lab_us-gaap_IncomeTaxesReceivable_60164F56EE0EBE1D7A34700C4712600C" xlink:type="arc" />
    <link:label id="lab_us-gaap_TaxesPayableCurrent_BA5D63D6CBD73D9DBF68700C471201FB_terseLabel_en-US" xlink:label="lab_us-gaap_TaxesPayableCurrent_BA5D63D6CBD73D9DBF68700C471201FB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Income taxes payable</link:label>
    <link:label id="lab_us-gaap_TaxesPayableCurrent_BA5D63D6CBD73D9DBF68700C471201FB_label_en-US" xlink:label="lab_us-gaap_TaxesPayableCurrent_BA5D63D6CBD73D9DBF68700C471201FB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Taxes Payable, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_TaxesPayableCurrent" xlink:label="loc_us-gaap_TaxesPayableCurrent_BA5D63D6CBD73D9DBF68700C471201FB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_TaxesPayableCurrent_BA5D63D6CBD73D9DBF68700C471201FB" xlink:to="lab_us-gaap_TaxesPayableCurrent_BA5D63D6CBD73D9DBF68700C471201FB" xlink:type="arc" />
    <link:label id="lab_us-gaap_UnrecognizedTaxBenefits_8A7C68C76F68A8CEC3C4700C4712612F_terseLabel_en-US" xlink:label="lab_us-gaap_UnrecognizedTaxBenefits_8A7C68C76F68A8CEC3C4700C4712612F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unrecognized tax benefit</link:label>
    <link:label id="lab_us-gaap_UnrecognizedTaxBenefits_8A7C68C76F68A8CEC3C4700C4712612F_label_en-US" xlink:label="lab_us-gaap_UnrecognizedTaxBenefits_8A7C68C76F68A8CEC3C4700C4712612F" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_UnrecognizedTaxBenefits" xlink:label="loc_us-gaap_UnrecognizedTaxBenefits_8A7C68C76F68A8CEC3C4700C4712612F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_UnrecognizedTaxBenefits_8A7C68C76F68A8CEC3C4700C4712612F" xlink:to="lab_us-gaap_UnrecognizedTaxBenefits_8A7C68C76F68A8CEC3C4700C4712612F" xlink:type="arc" />
    <link:label id="lab_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued_FBB8B2F3BA467C5828B2700C47127E51_terseLabel_en-US" xlink:label="lab_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued_FBB8B2F3BA467C5828B2700C47127E51" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Payment of interest and penalties accrued</link:label>
    <link:label id="lab_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued_FBB8B2F3BA467C5828B2700C47127E51_label_en-US" xlink:label="lab_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued_FBB8B2F3BA467C5828B2700C47127E51" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued_FBB8B2F3BA467C5828B2700C47127E51" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued_FBB8B2F3BA467C5828B2700C47127E51" xlink:to="lab_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued_FBB8B2F3BA467C5828B2700C47127E51" xlink:type="arc" />
    <link:label id="lab_us-gaap_BasisOfAccountingPolicyPolicyTextBlock_9C0107199138FAB7774871AFD65AE8FC_terseLabel_en-US" xlink:label="lab_us-gaap_BasisOfAccountingPolicyPolicyTextBlock_9C0107199138FAB7774871AFD65AE8FC" 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_9C0107199138FAB7774871AFD65AE8FC_label_en-US" xlink:label="lab_us-gaap_BasisOfAccountingPolicyPolicyTextBlock_9C0107199138FAB7774871AFD65AE8FC" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_BasisOfAccountingPolicyPolicyTextBlock" xlink:label="loc_us-gaap_BasisOfAccountingPolicyPolicyTextBlock_9C0107199138FAB7774871AFD65AE8FC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BasisOfAccountingPolicyPolicyTextBlock_9C0107199138FAB7774871AFD65AE8FC" xlink:to="lab_us-gaap_BasisOfAccountingPolicyPolicyTextBlock_9C0107199138FAB7774871AFD65AE8FC" xlink:type="arc" />
    <link:label id="lab_us-gaap_SegmentReportingPolicyPolicyTextBlock_CCCE4E03467567E1BBF471AFD65A654F_terseLabel_en-US" xlink:label="lab_us-gaap_SegmentReportingPolicyPolicyTextBlock_CCCE4E03467567E1BBF471AFD65A654F" 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_SegmentReportingPolicyPolicyTextBlock_CCCE4E03467567E1BBF471AFD65A654F_label_en-US" xlink:label="lab_us-gaap_SegmentReportingPolicyPolicyTextBlock_CCCE4E03467567E1BBF471AFD65A654F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Segment Reporting, Policy [Policy Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SegmentReportingPolicyPolicyTextBlock" xlink:label="loc_us-gaap_SegmentReportingPolicyPolicyTextBlock_CCCE4E03467567E1BBF471AFD65A654F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SegmentReportingPolicyPolicyTextBlock_CCCE4E03467567E1BBF471AFD65A654F" xlink:to="lab_us-gaap_SegmentReportingPolicyPolicyTextBlock_CCCE4E03467567E1BBF471AFD65A654F" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiscalPeriod_5ADB41F5D2782760B0B771AFD65A9652_terseLabel_en-US" xlink:label="lab_us-gaap_FiscalPeriod_5ADB41F5D2782760B0B771AFD65A9652" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accounting Period</link:label>
    <link:label id="lab_us-gaap_FiscalPeriod_5ADB41F5D2782760B0B771AFD65A9652_label_en-US" xlink:label="lab_us-gaap_FiscalPeriod_5ADB41F5D2782760B0B771AFD65A9652" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fiscal Period, Policy [Policy Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FiscalPeriod" xlink:label="loc_us-gaap_FiscalPeriod_5ADB41F5D2782760B0B771AFD65A9652" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiscalPeriod_5ADB41F5D2782760B0B771AFD65A9652" xlink:to="lab_us-gaap_FiscalPeriod_5ADB41F5D2782760B0B771AFD65A9652" xlink:type="arc" />
    <link:label id="lab_us-gaap_UseOfEstimates_744A78FC4081865B9B3771AFD65AE9E3_terseLabel_en-US" xlink:label="lab_us-gaap_UseOfEstimates_744A78FC4081865B9B3771AFD65AE9E3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Significant Accounting Policies &amp; Estimates</link:label>
    <link:label id="lab_us-gaap_UseOfEstimates_744A78FC4081865B9B3771AFD65AE9E3_label_en-US" xlink:label="lab_us-gaap_UseOfEstimates_744A78FC4081865B9B3771AFD65AE9E3" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_UseOfEstimates" xlink:label="loc_us-gaap_UseOfEstimates_744A78FC4081865B9B3771AFD65AE9E3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_UseOfEstimates_744A78FC4081865B9B3771AFD65AE9E3" xlink:to="lab_us-gaap_UseOfEstimates_744A78FC4081865B9B3771AFD65AE9E3" xlink:type="arc" />
    <link:label id="lab_us-gaap_CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy_F3AC0F8FD59A6A8667B271AFD65A7DCC_terseLabel_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy_F3AC0F8FD59A6A8667B271AFD65A7DCC" 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_CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy_F3AC0F8FD59A6A8667B271AFD65A7DCC_label_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy_F3AC0F8FD59A6A8667B271AFD65A7DCC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy" xlink:label="loc_us-gaap_CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy_F3AC0F8FD59A6A8667B271AFD65A7DCC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy_F3AC0F8FD59A6A8667B271AFD65A7DCC" xlink:to="lab_us-gaap_CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy_F3AC0F8FD59A6A8667B271AFD65A7DCC" xlink:type="arc" />
    <link:label id="lab_us-gaap_FairValueOfFinancialInstrumentsPolicy_E606D7438086A33D8A6271AFD65A7AC6_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueOfFinancialInstrumentsPolicy_E606D7438086A33D8A6271AFD65A7AC6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair Value of Financial Instruments</link:label>
    <link:label id="lab_us-gaap_FairValueOfFinancialInstrumentsPolicy_E606D7438086A33D8A6271AFD65A7AC6_label_en-US" xlink:label="lab_us-gaap_FairValueOfFinancialInstrumentsPolicy_E606D7438086A33D8A6271AFD65A7AC6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value of Financial Instruments, Policy [Policy Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FairValueOfFinancialInstrumentsPolicy" xlink:label="loc_us-gaap_FairValueOfFinancialInstrumentsPolicy_E606D7438086A33D8A6271AFD65A7AC6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueOfFinancialInstrumentsPolicy_E606D7438086A33D8A6271AFD65A7AC6" xlink:to="lab_us-gaap_FairValueOfFinancialInstrumentsPolicy_E606D7438086A33D8A6271AFD65A7AC6" xlink:type="arc" />
    <link:label id="lab_dy_OtherAssetsPolicyPolicyTextBlock_45B4ADEDA96CE63946CB71C3EA44C24B_terseLabel_en-US" xlink:label="lab_dy_OtherAssetsPolicyPolicyTextBlock_45B4ADEDA96CE63946CB71C3EA44C24B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other Assets</link:label>
    <link:label id="lab_dy_OtherAssetsPolicyPolicyTextBlock_45B4ADEDA96CE63946CB71C3EA44C24B_label_en-US" xlink:label="lab_dy_OtherAssetsPolicyPolicyTextBlock_45B4ADEDA96CE63946CB71C3EA44C24B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Assets, Policy [Policy Text Block]</link:label>
    <link:label id="lab_dy_OtherAssetsPolicyPolicyTextBlock_45B4ADEDA96CE63946CB71C3EA44C24B_documentation_en-US" xlink:label="lab_dy_OtherAssetsPolicyPolicyTextBlock_45B4ADEDA96CE63946CB71C3EA44C24B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other Assets, Policy [Policy Text Block]</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_OtherAssetsPolicyPolicyTextBlock" xlink:label="loc_dy_OtherAssetsPolicyPolicyTextBlock_45B4ADEDA96CE63946CB71C3EA44C24B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_OtherAssetsPolicyPolicyTextBlock_45B4ADEDA96CE63946CB71C3EA44C24B" xlink:to="lab_dy_OtherAssetsPolicyPolicyTextBlock_45B4ADEDA96CE63946CB71C3EA44C24B" xlink:type="arc" />
    <link:label id="lab_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_0A05DF43CC3149D6E49671AFD65A7EBD_terseLabel_en-US" xlink:label="lab_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_0A05DF43CC3149D6E49671AFD65A7EBD" 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_0A05DF43CC3149D6E49671AFD65A7EBD_label_en-US" xlink:label="lab_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_0A05DF43CC3149D6E49671AFD65A7EBD" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock" xlink:label="loc_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_0A05DF43CC3149D6E49671AFD65A7EBD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_0A05DF43CC3149D6E49671AFD65A7EBD" xlink:to="lab_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_0A05DF43CC3149D6E49671AFD65A7EBD" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_9B0376A2BABE798A0B2C700C46F2F152_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_9B0376A2BABE798A0B2C700C46F2F152" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Property, Plant and Equipment [Table]</link:label>
    <link:label id="lab_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_9B0376A2BABE798A0B2C700C46F2F152_label_en-US" xlink:label="lab_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_9B0376A2BABE798A0B2C700C46F2F152" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property, Plant and Equipment [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_9B0376A2BABE798A0B2C700C46F2F152" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_9B0376A2BABE798A0B2C700C46F2F152" xlink:to="lab_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_9B0376A2BABE798A0B2C700C46F2F152" xlink:type="arc" />
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentByTypeAxis_94718238C8ABE7BE3DCC700C46F27DEF_terseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentByTypeAxis_94718238C8ABE7BE3DCC700C46F27DEF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Property, Plant and Equipment, Type [Axis]</link:label>
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentByTypeAxis_94718238C8ABE7BE3DCC700C46F27DEF_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentByTypeAxis_94718238C8ABE7BE3DCC700C46F27DEF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property, Plant and Equipment, Type [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_94718238C8ABE7BE3DCC700C46F27DEF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_94718238C8ABE7BE3DCC700C46F27DEF" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentByTypeAxis_94718238C8ABE7BE3DCC700C46F27DEF" xlink:type="arc" />
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentTypeDomain_5A81791C023E4CA4D316700C46F2F41A_terseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentTypeDomain_5A81791C023E4CA4D316700C46F2F41A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Property, Plant and Equipment, Type [Domain]</link:label>
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentTypeDomain_5A81791C023E4CA4D316700C46F2F41A_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentTypeDomain_5A81791C023E4CA4D316700C46F2F41A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property, Plant and Equipment, Type [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_5A81791C023E4CA4D316700C46F2F41A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_5A81791C023E4CA4D316700C46F2F41A" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentTypeDomain_5A81791C023E4CA4D316700C46F2F41A" xlink:type="arc" />
    <link:label id="lab_us-gaap_LandMember_DC76E35F6618AB22D949700C46F2F170_terseLabel_en-US" xlink:label="lab_us-gaap_LandMember_DC76E35F6618AB22D949700C46F2F170" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Land</link:label>
    <link:label id="lab_us-gaap_LandMember_DC76E35F6618AB22D949700C46F2F170_label_en-US" xlink:label="lab_us-gaap_LandMember_DC76E35F6618AB22D949700C46F2F170" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Land [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LandMember" xlink:label="loc_us-gaap_LandMember_DC76E35F6618AB22D949700C46F2F170" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LandMember_DC76E35F6618AB22D949700C46F2F170" xlink:to="lab_us-gaap_LandMember_DC76E35F6618AB22D949700C46F2F170" xlink:type="arc" />
    <link:label id="lab_us-gaap_BuildingMember_EB9175F3AE685D53284A700C46F20FA0_terseLabel_en-US" xlink:label="lab_us-gaap_BuildingMember_EB9175F3AE685D53284A700C46F20FA0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Buildings</link:label>
    <link:label id="lab_us-gaap_BuildingMember_EB9175F3AE685D53284A700C46F20FA0_label_en-US" xlink:label="lab_us-gaap_BuildingMember_EB9175F3AE685D53284A700C46F20FA0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Building [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_BuildingMember" xlink:label="loc_us-gaap_BuildingMember_EB9175F3AE685D53284A700C46F20FA0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BuildingMember_EB9175F3AE685D53284A700C46F20FA0" xlink:to="lab_us-gaap_BuildingMember_EB9175F3AE685D53284A700C46F20FA0" xlink:type="arc" />
    <link:label id="lab_us-gaap_LeaseholdImprovementsMember_B81A71A887B43890E155700C46F288CD_terseLabel_en-US" xlink:label="lab_us-gaap_LeaseholdImprovementsMember_B81A71A887B43890E155700C46F288CD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Leasehold improvements</link:label>
    <link:label id="lab_us-gaap_LeaseholdImprovementsMember_B81A71A887B43890E155700C46F288CD_label_en-US" xlink:label="lab_us-gaap_LeaseholdImprovementsMember_B81A71A887B43890E155700C46F288CD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Leasehold Improvements [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LeaseholdImprovementsMember" xlink:label="loc_us-gaap_LeaseholdImprovementsMember_B81A71A887B43890E155700C46F288CD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LeaseholdImprovementsMember_B81A71A887B43890E155700C46F288CD" xlink:to="lab_us-gaap_LeaseholdImprovementsMember_B81A71A887B43890E155700C46F288CD" xlink:type="arc" />
    <link:label id="lab_us-gaap_VehiclesMember_B56F2ED8DD8D8E2D8782700C46F25FBF_terseLabel_en-US" xlink:label="lab_us-gaap_VehiclesMember_B56F2ED8DD8D8E2D8782700C46F25FBF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Vehicles</link:label>
    <link:label id="lab_us-gaap_VehiclesMember_B56F2ED8DD8D8E2D8782700C46F25FBF_label_en-US" xlink:label="lab_us-gaap_VehiclesMember_B56F2ED8DD8D8E2D8782700C46F25FBF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Vehicles [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_VehiclesMember" xlink:label="loc_us-gaap_VehiclesMember_B56F2ED8DD8D8E2D8782700C46F25FBF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_VehiclesMember_B56F2ED8DD8D8E2D8782700C46F25FBF" xlink:to="lab_us-gaap_VehiclesMember_B56F2ED8DD8D8E2D8782700C46F25FBF" xlink:type="arc" />
    <link:label id="lab_dy_ComputerHardwareAndSoftwareMember_4E09E85222181E71DB13700C46F253EF_terseLabel_en-US" xlink:label="lab_dy_ComputerHardwareAndSoftwareMember_4E09E85222181E71DB13700C46F253EF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Computer hardware and software</link:label>
    <link:label id="lab_dy_ComputerHardwareAndSoftwareMember_4E09E85222181E71DB13700C46F253EF_label_en-US" xlink:label="lab_dy_ComputerHardwareAndSoftwareMember_4E09E85222181E71DB13700C46F253EF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Computer Hardware and Software [Member]</link:label>
    <link:label id="lab_dy_ComputerHardwareAndSoftwareMember_4E09E85222181E71DB13700C46F253EF_documentation_en-US" xlink:label="lab_dy_ComputerHardwareAndSoftwareMember_4E09E85222181E71DB13700C46F253EF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Computer hardware and software.</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_ComputerHardwareAndSoftwareMember" xlink:label="loc_dy_ComputerHardwareAndSoftwareMember_4E09E85222181E71DB13700C46F253EF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_ComputerHardwareAndSoftwareMember_4E09E85222181E71DB13700C46F253EF" xlink:to="lab_dy_ComputerHardwareAndSoftwareMember_4E09E85222181E71DB13700C46F253EF" xlink:type="arc" />
    <link:label id="lab_us-gaap_FurnitureAndFixturesMember_07521CDF6FA04DA5DA42700C46F2B89B_terseLabel_en-US" xlink:label="lab_us-gaap_FurnitureAndFixturesMember_07521CDF6FA04DA5DA42700C46F2B89B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Office furniture and equipment</link:label>
    <link:label id="lab_us-gaap_FurnitureAndFixturesMember_07521CDF6FA04DA5DA42700C46F2B89B_label_en-US" xlink:label="lab_us-gaap_FurnitureAndFixturesMember_07521CDF6FA04DA5DA42700C46F2B89B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Furniture and Fixtures [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FurnitureAndFixturesMember" xlink:label="loc_us-gaap_FurnitureAndFixturesMember_07521CDF6FA04DA5DA42700C46F2B89B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FurnitureAndFixturesMember_07521CDF6FA04DA5DA42700C46F2B89B" xlink:to="lab_us-gaap_FurnitureAndFixturesMember_07521CDF6FA04DA5DA42700C46F2B89B" xlink:type="arc" />
    <link:label id="lab_us-gaap_MachineryAndEquipmentMember_5ED3C089A0F243888067700C46F2D668_terseLabel_en-US" xlink:label="lab_us-gaap_MachineryAndEquipmentMember_5ED3C089A0F243888067700C46F2D668" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Equipment and machinery</link:label>
    <link:label id="lab_us-gaap_MachineryAndEquipmentMember_5ED3C089A0F243888067700C46F2D668_label_en-US" xlink:label="lab_us-gaap_MachineryAndEquipmentMember_5ED3C089A0F243888067700C46F2D668" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Machinery and Equipment [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_MachineryAndEquipmentMember" xlink:label="loc_us-gaap_MachineryAndEquipmentMember_5ED3C089A0F243888067700C46F2D668" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_MachineryAndEquipmentMember_5ED3C089A0F243888067700C46F2D668" xlink:to="lab_us-gaap_MachineryAndEquipmentMember_5ED3C089A0F243888067700C46F2D668" xlink:type="arc" />
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentLineItems_8EC15A18998A8EBA2DC4700C46F2094D_terseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentLineItems_8EC15A18998A8EBA2DC4700C46F2094D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Property, Plant and Equipment [Line Items]</link:label>
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentLineItems_8EC15A18998A8EBA2DC4700C46F2094D_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentLineItems_8EC15A18998A8EBA2DC4700C46F2094D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property, Plant and Equipment [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PropertyPlantAndEquipmentLineItems" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_8EC15A18998A8EBA2DC4700C46F2094D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_8EC15A18998A8EBA2DC4700C46F2094D" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentLineItems_8EC15A18998A8EBA2DC4700C46F2094D" xlink:type="arc" />
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentUsefulLife_F84E6936C3ECFC0A3D7E700C46F224AA_terseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentUsefulLife_F84E6936C3ECFC0A3D7E700C46F224AA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Estimated Useful Lives</link:label>
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentUsefulLife_F84E6936C3ECFC0A3D7E700C46F224AA_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentUsefulLife_F84E6936C3ECFC0A3D7E700C46F224AA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property, Plant and Equipment, Useful Life</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PropertyPlantAndEquipmentUsefulLife" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentUsefulLife_F84E6936C3ECFC0A3D7E700C46F224AA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentUsefulLife_F84E6936C3ECFC0A3D7E700C46F224AA" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentUsefulLife_F84E6936C3ECFC0A3D7E700C46F224AA" xlink:type="arc" />
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentGross_A7A06BD18C56D9D99CD5700C46F2342C_terseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentGross_A7A06BD18C56D9D99CD5700C46F2342C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Property, plant and equipment, gross</link:label>
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentGross_A7A06BD18C56D9D99CD5700C46F2342C_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentGross_A7A06BD18C56D9D99CD5700C46F2342C" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PropertyPlantAndEquipmentGross" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_A7A06BD18C56D9D99CD5700C46F2342C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentGross_A7A06BD18C56D9D99CD5700C46F2342C" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentGross_A7A06BD18C56D9D99CD5700C46F2342C" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_85AF94315A9243C95526700C46F2456D_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_85AF94315A9243C95526700C46F2456D" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Less: accumulated depreciation</link:label>
    <link:label id="lab_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_85AF94315A9243C95526700C46F2456D_label_en-US" xlink:label="lab_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_85AF94315A9243C95526700C46F2456D" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_85AF94315A9243C95526700C46F2456D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_85AF94315A9243C95526700C46F2456D" xlink:to="lab_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_85AF94315A9243C95526700C46F2456D" xlink:type="arc" />
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentNet_1584381CA24948A49E56700C46F2A1B4_totalLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentNet_1584381CA24948A49E56700C46F2A1B4" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Property and equipment, net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_1584381CA24948A49E56700C46F2A1B4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet_1584381CA24948A49E56700C46F2A1B4" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentNet_1584381CA24948A49E56700C46F2A1B4" xlink:type="arc" />
    <link:label id="lab_us-gaap_Depreciation_E476B23A60B6CE82C193700C46F2B6AC_terseLabel_en-US" xlink:label="lab_us-gaap_Depreciation_E476B23A60B6CE82C193700C46F2B6AC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Depreciation expense</link:label>
    <link:label id="lab_us-gaap_Depreciation_E476B23A60B6CE82C193700C46F2B6AC_label_en-US" xlink:label="lab_us-gaap_Depreciation_E476B23A60B6CE82C193700C46F2B6AC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Depreciation</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_Depreciation" xlink:label="loc_us-gaap_Depreciation_E476B23A60B6CE82C193700C46F2B6AC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Depreciation_E476B23A60B6CE82C193700C46F2B6AC" xlink:to="lab_us-gaap_Depreciation_E476B23A60B6CE82C193700C46F2B6AC" xlink:type="arc" />
    <link:label id="lab_us-gaap_LoansNotesTradeAndOtherReceivablesDisclosureTextBlock_01010BB931C9BF76C1AD700C46C49ACE_verboseLabel_en-US" xlink:label="lab_us-gaap_LoansNotesTradeAndOtherReceivablesDisclosureTextBlock_01010BB931C9BF76C1AD700C46C49ACE" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Accounts Receivable</link:label>
    <link:label id="lab_us-gaap_LoansNotesTradeAndOtherReceivablesDisclosureTextBlock_01010BB931C9BF76C1AD700C46C49ACE_label_en-US" xlink:label="lab_us-gaap_LoansNotesTradeAndOtherReceivablesDisclosureTextBlock_01010BB931C9BF76C1AD700C46C49ACE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loans, Notes, Trade and Other Receivables Disclosure [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LoansNotesTradeAndOtherReceivablesDisclosureTextBlock" xlink:label="loc_us-gaap_LoansNotesTradeAndOtherReceivablesDisclosureTextBlock_01010BB931C9BF76C1AD700C46C49ACE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LoansNotesTradeAndOtherReceivablesDisclosureTextBlock_01010BB931C9BF76C1AD700C46C49ACE" xlink:to="lab_us-gaap_LoansNotesTradeAndOtherReceivablesDisclosureTextBlock_01010BB931C9BF76C1AD700C46C49ACE" xlink:type="arc" />
    <link:label id="lab_us-gaap_SchedulesOfConcentrationOfRiskByRiskFactorTextBlock_7A1FCCF933837E7127E2700C4608065E_verboseLabel_en-US" xlink:label="lab_us-gaap_SchedulesOfConcentrationOfRiskByRiskFactorTextBlock_7A1FCCF933837E7127E2700C4608065E" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Schedule that Represents A Significant Portion of the Company&#8217;s Customer Base and Each Over 10% of Total Revenue</link:label>
    <link:label id="lab_us-gaap_SchedulesOfConcentrationOfRiskByRiskFactorTextBlock_7A1FCCF933837E7127E2700C4608065E_label_en-US" xlink:label="lab_us-gaap_SchedulesOfConcentrationOfRiskByRiskFactorTextBlock_7A1FCCF933837E7127E2700C4608065E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedules of Concentration of Risk, by Risk Factor [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SchedulesOfConcentrationOfRiskByRiskFactorTextBlock" xlink:label="loc_us-gaap_SchedulesOfConcentrationOfRiskByRiskFactorTextBlock_7A1FCCF933837E7127E2700C4608065E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SchedulesOfConcentrationOfRiskByRiskFactorTextBlock_7A1FCCF933837E7127E2700C4608065E" xlink:to="lab_us-gaap_SchedulesOfConcentrationOfRiskByRiskFactorTextBlock_7A1FCCF933837E7127E2700C4608065E" xlink:type="arc" />
    <link:label id="lab_dy_SchedulesOfConcentrationOfRiskByReceivableAndEarningsInExcessOfBillingsTableTextBlock_BE33BDD8904068624FE8700C4608690E_terseLabel_en-US" xlink:label="lab_dy_SchedulesOfConcentrationOfRiskByReceivableAndEarningsInExcessOfBillingsTableTextBlock_BE33BDD8904068624FE8700C4608690E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Customers Representing 10% or More of Combined Amounts of Trade Accounts Receivable and Costs and Estimated Earnings in Excess of Billings with the Following Outstanding Balances and Related Percentages of the Company&#8217;s Total Outstanding Balances</link:label>
    <link:label id="lab_dy_SchedulesOfConcentrationOfRiskByReceivableAndEarningsInExcessOfBillingsTableTextBlock_BE33BDD8904068624FE8700C4608690E_label_en-US" xlink:label="lab_dy_SchedulesOfConcentrationOfRiskByReceivableAndEarningsInExcessOfBillingsTableTextBlock_BE33BDD8904068624FE8700C4608690E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedules of Concentration of Risk, by Receivable and Earnings in Excess of Billings [Table Text Block]</link:label>
    <link:label id="lab_dy_SchedulesOfConcentrationOfRiskByReceivableAndEarningsInExcessOfBillingsTableTextBlock_BE33BDD8904068624FE8700C4608690E_documentation_en-US" xlink:label="lab_dy_SchedulesOfConcentrationOfRiskByReceivableAndEarningsInExcessOfBillingsTableTextBlock_BE33BDD8904068624FE8700C4608690E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Tabular disclosure of the nature of a concentration, a benchmark to which it is compared, and the percentage that the risk is to the benchmark.</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_SchedulesOfConcentrationOfRiskByReceivableAndEarningsInExcessOfBillingsTableTextBlock" xlink:label="loc_dy_SchedulesOfConcentrationOfRiskByReceivableAndEarningsInExcessOfBillingsTableTextBlock_BE33BDD8904068624FE8700C4608690E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_SchedulesOfConcentrationOfRiskByReceivableAndEarningsInExcessOfBillingsTableTextBlock_BE33BDD8904068624FE8700C4608690E" xlink:to="lab_dy_SchedulesOfConcentrationOfRiskByReceivableAndEarningsInExcessOfBillingsTableTextBlock_BE33BDD8904068624FE8700C4608690E" xlink:type="arc" />
    <link:label id="lab_dy_CostsandEstimatedEarningsinExcessofBillingsTextBlock_78AF699E89CD9FE0CAE5700C4731145A_terseLabel_en-US" xlink:label="lab_dy_CostsandEstimatedEarningsinExcessofBillingsTextBlock_78AF699E89CD9FE0CAE5700C4731145A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Costs and Estimated Earnings in Excess of Billings</link:label>
    <link:label id="lab_dy_CostsandEstimatedEarningsinExcessofBillingsTextBlock_78AF699E89CD9FE0CAE5700C4731145A_label_en-US" xlink:label="lab_dy_CostsandEstimatedEarningsinExcessofBillingsTextBlock_78AF699E89CD9FE0CAE5700C4731145A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Costs and Estimated Earnings in Excess of Billings [Text Block]</link:label>
    <link:label id="lab_dy_CostsandEstimatedEarningsinExcessofBillingsTextBlock_78AF699E89CD9FE0CAE5700C4731145A_documentation_en-US" xlink:label="lab_dy_CostsandEstimatedEarningsinExcessofBillingsTextBlock_78AF699E89CD9FE0CAE5700C4731145A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The Entire Disclosure of Costs and Estimated Earnings in Excess of Billings [Text Block]</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_CostsandEstimatedEarningsinExcessofBillingsTextBlock" xlink:label="loc_dy_CostsandEstimatedEarningsinExcessofBillingsTextBlock_78AF699E89CD9FE0CAE5700C4731145A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_CostsandEstimatedEarningsinExcessofBillingsTextBlock_78AF699E89CD9FE0CAE5700C4731145A" xlink:to="lab_dy_CostsandEstimatedEarningsinExcessofBillingsTextBlock_78AF699E89CD9FE0CAE5700C4731145A" xlink:type="arc" />
    <link:label id="lab_us-gaap_StockholdersEquityNoteAbstract_D8A963550871647BDA5E68E5EFA6D977_label_en-US" xlink:label="lab_us-gaap_StockholdersEquityNoteAbstract_D8A963550871647BDA5E68E5EFA6D977" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StockholdersEquityNoteAbstract" xlink:label="loc_us-gaap_StockholdersEquityNoteAbstract_D8A963550871647BDA5E68E5EFA6D977" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockholdersEquityNoteAbstract_D8A963550871647BDA5E68E5EFA6D977" xlink:to="lab_us-gaap_StockholdersEquityNoteAbstract_D8A963550871647BDA5E68E5EFA6D977" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfStockByClassTable_D2928239B2FAE22B390268E5EFA68CC7_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfStockByClassTable_D2928239B2FAE22B390268E5EFA68CC7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Stock by Class [Table]</link:label>
    <link:label id="lab_us-gaap_ScheduleOfStockByClassTable_D2928239B2FAE22B390268E5EFA68CC7_label_en-US" xlink:label="lab_us-gaap_ScheduleOfStockByClassTable_D2928239B2FAE22B390268E5EFA68CC7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Stock by Class [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ScheduleOfStockByClassTable" xlink:label="loc_us-gaap_ScheduleOfStockByClassTable_D2928239B2FAE22B390268E5EFA68CC7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_D2928239B2FAE22B390268E5EFA68CC7" xlink:to="lab_us-gaap_ScheduleOfStockByClassTable_D2928239B2FAE22B390268E5EFA68CC7" xlink:type="arc" />
    <link:label id="lab_us-gaap_StatementClassOfStockAxis_9C29280437CDD9C54F6E68E5EFA68DC6_terseLabel_en-US" xlink:label="lab_us-gaap_StatementClassOfStockAxis_9C29280437CDD9C54F6E68E5EFA68DC6" 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_9C29280437CDD9C54F6E68E5EFA68DC6_label_en-US" xlink:label="lab_us-gaap_StatementClassOfStockAxis_9C29280437CDD9C54F6E68E5EFA68DC6" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="loc_us-gaap_StatementClassOfStockAxis_9C29280437CDD9C54F6E68E5EFA68DC6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementClassOfStockAxis_9C29280437CDD9C54F6E68E5EFA68DC6" xlink:to="lab_us-gaap_StatementClassOfStockAxis_9C29280437CDD9C54F6E68E5EFA68DC6" xlink:type="arc" />
    <link:label id="lab_us-gaap_ClassOfStockDomain_AD2E03B50462E943B98B68E5EFA6106A_terseLabel_en-US" xlink:label="lab_us-gaap_ClassOfStockDomain_AD2E03B50462E943B98B68E5EFA6106A" 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_AD2E03B50462E943B98B68E5EFA6106A_label_en-US" xlink:label="lab_us-gaap_ClassOfStockDomain_AD2E03B50462E943B98B68E5EFA6106A" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_AD2E03B50462E943B98B68E5EFA6106A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ClassOfStockDomain_AD2E03B50462E943B98B68E5EFA6106A" xlink:to="lab_us-gaap_ClassOfStockDomain_AD2E03B50462E943B98B68E5EFA6106A" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommonStockMember_2C6B3AAD79BD72DB248F68E5EFA7AA67_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockMember_2C6B3AAD79BD72DB248F68E5EFA7AA67" 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_2C6B3AAD79BD72DB248F68E5EFA7AA67_label_en-US" xlink:label="lab_us-gaap_CommonStockMember_2C6B3AAD79BD72DB248F68E5EFA7AA67" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CommonStockMember" xlink:label="loc_us-gaap_CommonStockMember_2C6B3AAD79BD72DB248F68E5EFA7AA67" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockMember_2C6B3AAD79BD72DB248F68E5EFA7AA67" xlink:to="lab_us-gaap_CommonStockMember_2C6B3AAD79BD72DB248F68E5EFA7AA67" xlink:type="arc" />
    <link:label id="lab_us-gaap_ClassOfStockLineItems_8600178F680068BCF72368E5EFA7CCD7_terseLabel_en-US" xlink:label="lab_us-gaap_ClassOfStockLineItems_8600178F680068BCF72368E5EFA7CCD7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Class of Stock [Line Items]</link:label>
    <link:label id="lab_us-gaap_ClassOfStockLineItems_8600178F680068BCF72368E5EFA7CCD7_label_en-US" xlink:label="lab_us-gaap_ClassOfStockLineItems_8600178F680068BCF72368E5EFA7CCD7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Class of Stock [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ClassOfStockLineItems" xlink:label="loc_us-gaap_ClassOfStockLineItems_8600178F680068BCF72368E5EFA7CCD7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ClassOfStockLineItems_8600178F680068BCF72368E5EFA7CCD7" xlink:to="lab_us-gaap_ClassOfStockLineItems_8600178F680068BCF72368E5EFA7CCD7" xlink:type="arc" />
    <link:label id="lab_us-gaap_StockRepurchasedDuringPeriodShares_8CC9CBB7C4F6F02FD71C68E5EFA767C4_verboseLabel_en-US" xlink:label="lab_us-gaap_StockRepurchasedDuringPeriodShares_8CC9CBB7C4F6F02FD71C68E5EFA767C4" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Number of Shares Repurchased</link:label>
    <link:label id="lab_us-gaap_StockRepurchasedDuringPeriodShares_8CC9CBB7C4F6F02FD71C68E5EFA767C4_label_en-US" xlink:label="lab_us-gaap_StockRepurchasedDuringPeriodShares_8CC9CBB7C4F6F02FD71C68E5EFA767C4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stock Repurchased During Period, Shares</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StockRepurchasedDuringPeriodShares" xlink:label="loc_us-gaap_StockRepurchasedDuringPeriodShares_8CC9CBB7C4F6F02FD71C68E5EFA767C4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockRepurchasedDuringPeriodShares_8CC9CBB7C4F6F02FD71C68E5EFA767C4" xlink:to="lab_us-gaap_StockRepurchasedDuringPeriodShares_8CC9CBB7C4F6F02FD71C68E5EFA767C4" xlink:type="arc" />
    <link:label id="lab_dy_AveragePricePerShareRepurchaseOfCommonStock_7AB51CE72596C09B6C2F68E5EFA712E5_terseLabel_en-US" xlink:label="lab_dy_AveragePricePerShareRepurchaseOfCommonStock_7AB51CE72596C09B6C2F68E5EFA712E5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Average Price Per Share (in dollars per share)</link:label>
    <link:label id="lab_dy_AveragePricePerShareRepurchaseOfCommonStock_7AB51CE72596C09B6C2F68E5EFA712E5_label_en-US" xlink:label="lab_dy_AveragePricePerShareRepurchaseOfCommonStock_7AB51CE72596C09B6C2F68E5EFA712E5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Average Price Per Share Repurchase of Common Stock</link:label>
    <link:label id="lab_dy_AveragePricePerShareRepurchaseOfCommonStock_7AB51CE72596C09B6C2F68E5EFA712E5_documentation_en-US" xlink:label="lab_dy_AveragePricePerShareRepurchaseOfCommonStock_7AB51CE72596C09B6C2F68E5EFA712E5" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The total costs of shares repurchased during the period divided by the total number of shares that have been repurchased during the period which have not been retired and are not held in treasury.</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_AveragePricePerShareRepurchaseOfCommonStock" xlink:label="loc_dy_AveragePricePerShareRepurchaseOfCommonStock_7AB51CE72596C09B6C2F68E5EFA712E5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_AveragePricePerShareRepurchaseOfCommonStock_7AB51CE72596C09B6C2F68E5EFA712E5" xlink:to="lab_dy_AveragePricePerShareRepurchaseOfCommonStock_7AB51CE72596C09B6C2F68E5EFA712E5" xlink:type="arc" />
    <link:label id="lab_us-gaap_PaymentsForRepurchaseOfCommonStock_E863CFD537103B73182268E5EFA721F0_terseLabel_en-US" xlink:label="lab_us-gaap_PaymentsForRepurchaseOfCommonStock_E863CFD537103B73182268E5EFA721F0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total Consideration (Dollars in thousands)</link:label>
    <link:label id="lab_us-gaap_PaymentsForRepurchaseOfCommonStock_E863CFD537103B73182268E5EFA721F0_label_en-US" xlink:label="lab_us-gaap_PaymentsForRepurchaseOfCommonStock_E863CFD537103B73182268E5EFA721F0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments for Repurchase of Common Stock</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PaymentsForRepurchaseOfCommonStock" xlink:label="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_E863CFD537103B73182268E5EFA721F0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_E863CFD537103B73182268E5EFA721F0" xlink:to="lab_us-gaap_PaymentsForRepurchaseOfCommonStock_E863CFD537103B73182268E5EFA721F0" xlink:type="arc" />
    <link:label id="lab_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1_F56B2E860CE37C40707E68E5EFA7DF3F_terseLabel_en-US" xlink:label="lab_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1_F56B2E860CE37C40707E68E5EFA7DF3F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Remaining authorized repurchase amount</link:label>
    <link:label id="lab_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1_F56B2E860CE37C40707E68E5EFA7DF3F_label_en-US" xlink:label="lab_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1_F56B2E860CE37C40707E68E5EFA7DF3F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stock Repurchase Program, Remaining Authorized Repurchase Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1" xlink:label="loc_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1_F56B2E860CE37C40707E68E5EFA7DF3F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1_F56B2E860CE37C40707E68E5EFA7DF3F" xlink:to="lab_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1_F56B2E860CE37C40707E68E5EFA7DF3F" xlink:type="arc" />
    <link:label id="lab_us-gaap_StockRepurchaseProgramAuthorizedAmount1_87DD0F147004527760C568E5EFA72561_terseLabel_en-US" xlink:label="lab_us-gaap_StockRepurchaseProgramAuthorizedAmount1_87DD0F147004527760C568E5EFA72561" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Common stock authorized repurchase amount</link:label>
    <link:label id="lab_us-gaap_StockRepurchaseProgramAuthorizedAmount1_87DD0F147004527760C568E5EFA72561_label_en-US" xlink:label="lab_us-gaap_StockRepurchaseProgramAuthorizedAmount1_87DD0F147004527760C568E5EFA72561" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stock Repurchase Program, Authorized Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StockRepurchaseProgramAuthorizedAmount1" xlink:label="loc_us-gaap_StockRepurchaseProgramAuthorizedAmount1_87DD0F147004527760C568E5EFA72561" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockRepurchaseProgramAuthorizedAmount1_87DD0F147004527760C568E5EFA72561" xlink:to="lab_us-gaap_StockRepurchaseProgramAuthorizedAmount1_87DD0F147004527760C568E5EFA72561" xlink:type="arc" />
    <link:label id="lab_us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation_56F701BE2F98ECEBFA8468E5EFA8D1BA_terseLabel_en-US" xlink:label="lab_us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation_56F701BE2F98ECEBFA8468E5EFA8D1BA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Shares Paid for Tax Withholding for Share Based Compensation</link:label>
    <link:label id="lab_us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation_56F701BE2F98ECEBFA8468E5EFA8D1BA_label_en-US" xlink:label="lab_us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation_56F701BE2F98ECEBFA8468E5EFA8D1BA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Shares Paid for Tax Withholding for Share Based Compensation</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation" xlink:label="loc_us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation_56F701BE2F98ECEBFA8468E5EFA8D1BA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation_56F701BE2F98ECEBFA8468E5EFA8D1BA" xlink:to="lab_us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation_56F701BE2F98ECEBFA8468E5EFA8D1BA" xlink:type="arc" />
    <link:label id="lab_dy_ValueofSharesPaidforTaxWithholdingforShareBasedCompensation_5CE4AC51F106A6ABCC1768E5EFA832D8_terseLabel_en-US" xlink:label="lab_dy_ValueofSharesPaidforTaxWithholdingforShareBasedCompensation_5CE4AC51F106A6ABCC1768E5EFA832D8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Value of Shares Paid for Tax Withholding for Share Based Compensation</link:label>
    <link:label id="lab_dy_ValueofSharesPaidforTaxWithholdingforShareBasedCompensation_5CE4AC51F106A6ABCC1768E5EFA832D8_label_en-US" xlink:label="lab_dy_ValueofSharesPaidforTaxWithholdingforShareBasedCompensation_5CE4AC51F106A6ABCC1768E5EFA832D8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Value of Shares Paid for Tax Withholding for Share Based Compensation</link:label>
    <link:label id="lab_dy_ValueofSharesPaidforTaxWithholdingforShareBasedCompensation_5CE4AC51F106A6ABCC1768E5EFA832D8_documentation_en-US" xlink:label="lab_dy_ValueofSharesPaidforTaxWithholdingforShareBasedCompensation_5CE4AC51F106A6ABCC1768E5EFA832D8" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">For net-share settlement of share-based awards when the employer settles employees' income tax withholding obligations, this element represents the monetary value of shares the employees use to repay the employer.</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_ValueofSharesPaidforTaxWithholdingforShareBasedCompensation" xlink:label="loc_dy_ValueofSharesPaidforTaxWithholdingforShareBasedCompensation_5CE4AC51F106A6ABCC1768E5EFA832D8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_ValueofSharesPaidforTaxWithholdingforShareBasedCompensation_5CE4AC51F106A6ABCC1768E5EFA832D8" xlink:to="lab_dy_ValueofSharesPaidforTaxWithholdingforShareBasedCompensation_5CE4AC51F106A6ABCC1768E5EFA832D8" xlink:type="arc" />
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock_C52367AA281D15061125700C4731544C_verboseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock_C52367AA281D15061125700C4731544C" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Property and Equipment</link:label>
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock_C52367AA281D15061125700C4731544C_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock_C52367AA281D15061125700C4731544C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property, Plant and Equipment Disclosure [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock_C52367AA281D15061125700C4731544C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock_C52367AA281D15061125700C4731544C" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock_C52367AA281D15061125700C4731544C" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfCondensedFinancialStatementsTable_F69254E15F7A836CC201690C600CF0A0_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfCondensedFinancialStatementsTable_F69254E15F7A836CC201690C600CF0A0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Condensed Financial Statements [Table]</link:label>
    <link:label id="lab_us-gaap_ScheduleOfCondensedFinancialStatementsTable_F69254E15F7A836CC201690C600CF0A0_label_en-US" xlink:label="lab_us-gaap_ScheduleOfCondensedFinancialStatementsTable_F69254E15F7A836CC201690C600CF0A0" 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/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ScheduleOfCondensedFinancialStatementsTable" xlink:label="loc_us-gaap_ScheduleOfCondensedFinancialStatementsTable_F69254E15F7A836CC201690C600CF0A0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfCondensedFinancialStatementsTable_F69254E15F7A836CC201690C600CF0A0" xlink:to="lab_us-gaap_ScheduleOfCondensedFinancialStatementsTable_F69254E15F7A836CC201690C600CF0A0" xlink:type="arc" />
    <link:label id="lab_dei_LegalEntityAxis_1C4D7B85ED16440D1EF9690C600CC4DB_terseLabel_en-US" xlink:label="lab_dei_LegalEntityAxis_1C4D7B85ED16440D1EF9690C600CC4DB" 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_1C4D7B85ED16440D1EF9690C600CC4DB_label_en-US" xlink:label="lab_dei_LegalEntityAxis_1C4D7B85ED16440D1EF9690C600CC4DB" 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="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_1C4D7B85ED16440D1EF9690C600CC4DB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_LegalEntityAxis_1C4D7B85ED16440D1EF9690C600CC4DB" xlink:to="lab_dei_LegalEntityAxis_1C4D7B85ED16440D1EF9690C600CC4DB" xlink:type="arc" />
    <link:label id="lab_dei_EntityDomain_779E91D57EE2A40E8962690C600CCF17_terseLabel_en-US" xlink:label="lab_dei_EntityDomain_779E91D57EE2A40E8962690C600CCF17" 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_779E91D57EE2A40E8962690C600CCF17_label_en-US" xlink:label="lab_dei_EntityDomain_779E91D57EE2A40E8962690C600CCF17" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_779E91D57EE2A40E8962690C600CCF17" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityDomain_779E91D57EE2A40E8962690C600CCF17" xlink:to="lab_dei_EntityDomain_779E91D57EE2A40E8962690C600CCF17" xlink:type="arc" />
    <link:label id="lab_us-gaap_ParentCompanyMember_A04E7A2597E321EAE76E690C600C9BD6_terseLabel_en-US" xlink:label="lab_us-gaap_ParentCompanyMember_A04E7A2597E321EAE76E690C600C9BD6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Parent</link:label>
    <link:label id="lab_us-gaap_ParentCompanyMember_A04E7A2597E321EAE76E690C600C9BD6_label_en-US" xlink:label="lab_us-gaap_ParentCompanyMember_A04E7A2597E321EAE76E690C600C9BD6" 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/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ParentCompanyMember" xlink:label="loc_us-gaap_ParentCompanyMember_A04E7A2597E321EAE76E690C600C9BD6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ParentCompanyMember_A04E7A2597E321EAE76E690C600C9BD6" xlink:to="lab_us-gaap_ParentCompanyMember_A04E7A2597E321EAE76E690C600C9BD6" xlink:type="arc" />
    <link:label id="lab_dy_IssuerMember_67F65E0AA7DCED071485690C600CDCF3_terseLabel_en-US" xlink:label="lab_dy_IssuerMember_67F65E0AA7DCED071485690C600CDCF3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Issuer</link:label>
    <link:label id="lab_dy_IssuerMember_67F65E0AA7DCED071485690C600CDCF3_label_en-US" xlink:label="lab_dy_IssuerMember_67F65E0AA7DCED071485690C600CDCF3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Issuer [Member]</link:label>
    <link:label id="lab_dy_IssuerMember_67F65E0AA7DCED071485690C600CDCF3_documentation_en-US" xlink:label="lab_dy_IssuerMember_67F65E0AA7DCED071485690C600CDCF3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Issuer [Member]</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_IssuerMember" xlink:label="loc_dy_IssuerMember_67F65E0AA7DCED071485690C600CDCF3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_IssuerMember_67F65E0AA7DCED071485690C600CDCF3" xlink:to="lab_dy_IssuerMember_67F65E0AA7DCED071485690C600CDCF3" xlink:type="arc" />
    <link:label id="lab_us-gaap_GuarantorSubsidiariesMember_F4ED30BE188480FD0F6F690C600CD908_terseLabel_en-US" xlink:label="lab_us-gaap_GuarantorSubsidiariesMember_F4ED30BE188480FD0F6F690C600CD908" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Subsidiary Guarantors</link:label>
    <link:label id="lab_us-gaap_GuarantorSubsidiariesMember_F4ED30BE188480FD0F6F690C600CD908_label_en-US" xlink:label="lab_us-gaap_GuarantorSubsidiariesMember_F4ED30BE188480FD0F6F690C600CD908" 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/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_GuarantorSubsidiariesMember" xlink:label="loc_us-gaap_GuarantorSubsidiariesMember_F4ED30BE188480FD0F6F690C600CD908" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GuarantorSubsidiariesMember_F4ED30BE188480FD0F6F690C600CD908" xlink:to="lab_us-gaap_GuarantorSubsidiariesMember_F4ED30BE188480FD0F6F690C600CD908" xlink:type="arc" />
    <link:label id="lab_us-gaap_NonGuarantorSubsidiariesMember_A830CE0861E4A3C3C73D690C600D8047_terseLabel_en-US" xlink:label="lab_us-gaap_NonGuarantorSubsidiariesMember_A830CE0861E4A3C3C73D690C600D8047" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Non- Guarantor Subsidiaries</link:label>
    <link:label id="lab_us-gaap_NonGuarantorSubsidiariesMember_A830CE0861E4A3C3C73D690C600D8047_label_en-US" xlink:label="lab_us-gaap_NonGuarantorSubsidiariesMember_A830CE0861E4A3C3C73D690C600D8047" 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/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NonGuarantorSubsidiariesMember" xlink:label="loc_us-gaap_NonGuarantorSubsidiariesMember_A830CE0861E4A3C3C73D690C600D8047" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NonGuarantorSubsidiariesMember_A830CE0861E4A3C3C73D690C600D8047" xlink:to="lab_us-gaap_NonGuarantorSubsidiariesMember_A830CE0861E4A3C3C73D690C600D8047" xlink:type="arc" />
    <link:label id="lab_us-gaap_ConsolidationEliminationsMember_27C2377EBD760F34B9B6690C60120968_terseLabel_en-US" xlink:label="lab_us-gaap_ConsolidationEliminationsMember_27C2377EBD760F34B9B6690C60120968" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Eliminations and Reclassifications</link:label>
    <link:label id="lab_us-gaap_ConsolidationEliminationsMember_27C2377EBD760F34B9B6690C60120968_label_en-US" xlink:label="lab_us-gaap_ConsolidationEliminationsMember_27C2377EBD760F34B9B6690C60120968" 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/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ConsolidationEliminationsMember" xlink:label="loc_us-gaap_ConsolidationEliminationsMember_27C2377EBD760F34B9B6690C60120968" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConsolidationEliminationsMember_27C2377EBD760F34B9B6690C60120968" xlink:to="lab_us-gaap_ConsolidationEliminationsMember_27C2377EBD760F34B9B6690C60120968" xlink:type="arc" />
    <link:label id="lab_us-gaap_CondensedFinancialStatementsCaptionsLineItems_75BEA26A311CE9E06519690C6012BDC3_terseLabel_en-US" xlink:label="lab_us-gaap_CondensedFinancialStatementsCaptionsLineItems_75BEA26A311CE9E06519690C6012BDC3" 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_us-gaap_CondensedFinancialStatementsCaptionsLineItems_75BEA26A311CE9E06519690C6012BDC3_label_en-US" xlink:label="lab_us-gaap_CondensedFinancialStatementsCaptionsLineItems_75BEA26A311CE9E06519690C6012BDC3" 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/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CondensedFinancialStatementsCaptionsLineItems" xlink:label="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_75BEA26A311CE9E06519690C6012BDC3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_75BEA26A311CE9E06519690C6012BDC3" xlink:to="lab_us-gaap_CondensedFinancialStatementsCaptionsLineItems_75BEA26A311CE9E06519690C6012BDC3" xlink:type="arc" />
    <link:label id="lab_us-gaap_RevenuesAbstract_C8AEE13D70F1AE1CF439690C60121826_verboseLabel_en-US" xlink:label="lab_us-gaap_RevenuesAbstract_C8AEE13D70F1AE1CF439690C60121826" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Revenues [Abstract]</link:label>
    <link:label id="lab_us-gaap_RevenuesAbstract_C8AEE13D70F1AE1CF439690C60121826_label_en-US" xlink:label="lab_us-gaap_RevenuesAbstract_C8AEE13D70F1AE1CF439690C60121826" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RevenuesAbstract" xlink:label="loc_us-gaap_RevenuesAbstract_C8AEE13D70F1AE1CF439690C60121826" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RevenuesAbstract_C8AEE13D70F1AE1CF439690C60121826" xlink:to="lab_us-gaap_RevenuesAbstract_C8AEE13D70F1AE1CF439690C60121826" xlink:type="arc" />
    <link:label id="lab_dy_IntercompanyChargesIncome_2752AA50C45AD6836689690C601389B4_terseLabel_en-US" xlink:label="lab_dy_IntercompanyChargesIncome_2752AA50C45AD6836689690C601389B4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Intercompany charges (income), net</link:label>
    <link:label id="lab_dy_IntercompanyChargesIncome_2752AA50C45AD6836689690C601389B4_label_en-US" xlink:label="lab_dy_IntercompanyChargesIncome_2752AA50C45AD6836689690C601389B4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Intercompany Charges Income</link:label>
    <link:label id="lab_dy_IntercompanyChargesIncome_2752AA50C45AD6836689690C601389B4_documentation_en-US" xlink:label="lab_dy_IntercompanyChargesIncome_2752AA50C45AD6836689690C601389B4" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Intercompany charges (income) between parent, issuer, guarantor, and non-guarantor entities.</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_IntercompanyChargesIncome" xlink:label="loc_dy_IntercompanyChargesIncome_2752AA50C45AD6836689690C601389B4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_IntercompanyChargesIncome_2752AA50C45AD6836689690C601389B4" xlink:to="lab_dy_IntercompanyChargesIncome_2752AA50C45AD6836689690C601389B4" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncomeTaxExpenseBenefit_BFBD2E195DAAE33DCED4690C6013361E_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxExpenseBenefit_BFBD2E195DAAE33DCED4690C6013361E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Provision (benefit) for income taxes:</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_BFBD2E195DAAE33DCED4690C6013361E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_BFBD2E195DAAE33DCED4690C6013361E" xlink:to="lab_us-gaap_IncomeTaxExpenseBenefit_BFBD2E195DAAE33DCED4690C6013361E" xlink:type="arc" />
    <link:label id="lab_dy_NetIncomeLossBeforeEquityInEarningsOfSubsidiaries_12ECDB88371F0C7452FA690C6014C1D6_terseLabel_en-US" xlink:label="lab_dy_NetIncomeLossBeforeEquityInEarningsOfSubsidiaries_12ECDB88371F0C7452FA690C6014C1D6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net income (loss) before equity in earnings of subsidiaries</link:label>
    <link:label id="lab_dy_NetIncomeLossBeforeEquityInEarningsOfSubsidiaries_12ECDB88371F0C7452FA690C6014C1D6_label_en-US" xlink:label="lab_dy_NetIncomeLossBeforeEquityInEarningsOfSubsidiaries_12ECDB88371F0C7452FA690C6014C1D6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net income (loss) before equity in earnings of subsidiaries</link:label>
    <link:label id="lab_dy_NetIncomeLossBeforeEquityInEarningsOfSubsidiaries_12ECDB88371F0C7452FA690C6014C1D6_documentation_en-US" xlink:label="lab_dy_NetIncomeLossBeforeEquityInEarningsOfSubsidiaries_12ECDB88371F0C7452FA690C6014C1D6" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investment.</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_NetIncomeLossBeforeEquityInEarningsOfSubsidiaries" xlink:label="loc_dy_NetIncomeLossBeforeEquityInEarningsOfSubsidiaries_12ECDB88371F0C7452FA690C6014C1D6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_NetIncomeLossBeforeEquityInEarningsOfSubsidiaries_12ECDB88371F0C7452FA690C6014C1D6" xlink:to="lab_dy_NetIncomeLossBeforeEquityInEarningsOfSubsidiaries_12ECDB88371F0C7452FA690C6014C1D6" xlink:type="arc" />
    <link:label id="lab_dy_EquityInEarningsOfSubsidiaries_6A83E96C2AEEE98703C6690C60148CF6_terseLabel_en-US" xlink:label="lab_dy_EquityInEarningsOfSubsidiaries_6A83E96C2AEEE98703C6690C60148CF6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Equity in earnings (losses) of subsidiaries</link:label>
    <link:label id="lab_dy_EquityInEarningsOfSubsidiaries_6A83E96C2AEEE98703C6690C60148CF6_label_en-US" xlink:label="lab_dy_EquityInEarningsOfSubsidiaries_6A83E96C2AEEE98703C6690C60148CF6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Equity In Earnings Of Subsidiaries</link:label>
    <link:label id="lab_dy_EquityInEarningsOfSubsidiaries_6A83E96C2AEEE98703C6690C60148CF6_documentation_en-US" xlink:label="lab_dy_EquityInEarningsOfSubsidiaries_6A83E96C2AEEE98703C6690C60148CF6" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Income (Loss) From Investment In Subsidiaries</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_EquityInEarningsOfSubsidiaries" xlink:label="loc_dy_EquityInEarningsOfSubsidiaries_6A83E96C2AEEE98703C6690C60148CF6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_EquityInEarningsOfSubsidiaries_6A83E96C2AEEE98703C6690C60148CF6" xlink:to="lab_dy_EquityInEarningsOfSubsidiaries_6A83E96C2AEEE98703C6690C60148CF6" xlink:type="arc" />
    <link:label id="lab_dy_CostsIncurredOnContractsInProgress_C6BAED3ACADBCB61157A700C4740DBAF_terseLabel_en-US" xlink:label="lab_dy_CostsIncurredOnContractsInProgress_C6BAED3ACADBCB61157A700C4740DBAF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Costs incurred on contracts in progress</link:label>
    <link:label id="lab_dy_CostsIncurredOnContractsInProgress_C6BAED3ACADBCB61157A700C4740DBAF_label_en-US" xlink:label="lab_dy_CostsIncurredOnContractsInProgress_C6BAED3ACADBCB61157A700C4740DBAF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Costs Incurred On Contracts In Progress</link:label>
    <link:label id="lab_dy_CostsIncurredOnContractsInProgress_C6BAED3ACADBCB61157A700C4740DBAF_documentation_en-US" xlink:label="lab_dy_CostsIncurredOnContractsInProgress_C6BAED3ACADBCB61157A700C4740DBAF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Costs Incurred On Contracts In Progress</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_CostsIncurredOnContractsInProgress" xlink:label="loc_dy_CostsIncurredOnContractsInProgress_C6BAED3ACADBCB61157A700C4740DBAF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_CostsIncurredOnContractsInProgress_C6BAED3ACADBCB61157A700C4740DBAF" xlink:to="lab_dy_CostsIncurredOnContractsInProgress_C6BAED3ACADBCB61157A700C4740DBAF" xlink:type="arc" />
    <link:label id="lab_dy_EstimatedEarningsLossNetOnContractsInProgress_B67FE790975ACBF692AA700C47408E66_terseLabel_en-US" xlink:label="lab_dy_EstimatedEarningsLossNetOnContractsInProgress_B67FE790975ACBF692AA700C47408E66" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Estimated to date earnings</link:label>
    <link:label id="lab_dy_EstimatedEarningsLossNetOnContractsInProgress_B67FE790975ACBF692AA700C47408E66_label_en-US" xlink:label="lab_dy_EstimatedEarningsLossNetOnContractsInProgress_B67FE790975ACBF692AA700C47408E66" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Estimated Earnings Loss Net On Contracts In Progress</link:label>
    <link:label id="lab_dy_EstimatedEarningsLossNetOnContractsInProgress_B67FE790975ACBF692AA700C47408E66_documentation_en-US" xlink:label="lab_dy_EstimatedEarningsLossNetOnContractsInProgress_B67FE790975ACBF692AA700C47408E66" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Estimated earnings, net of estimated losses on contracts in progress.</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_EstimatedEarningsLossNetOnContractsInProgress" xlink:label="loc_dy_EstimatedEarningsLossNetOnContractsInProgress_B67FE790975ACBF692AA700C47408E66" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_EstimatedEarningsLossNetOnContractsInProgress_B67FE790975ACBF692AA700C47408E66" xlink:to="lab_dy_EstimatedEarningsLossNetOnContractsInProgress_B67FE790975ACBF692AA700C47408E66" xlink:type="arc" />
    <link:label id="lab_us-gaap_CostsInExcessOfBillingsOnUncompletedContractsOrProgramsExpectedToBeCollectedWithinOneYear_545999EB84C961B00B8A700C4740EEC5_totalLabel_en-US" xlink:label="lab_us-gaap_CostsInExcessOfBillingsOnUncompletedContractsOrProgramsExpectedToBeCollectedWithinOneYear_545999EB84C961B00B8A700C4740EEC5" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total costs and estimated earnings</link:label>
    <link:label id="lab_us-gaap_CostsInExcessOfBillingsOnUncompletedContractsOrProgramsExpectedToBeCollectedWithinOneYear_545999EB84C961B00B8A700C4740EEC5_label_en-US" xlink:label="lab_us-gaap_CostsInExcessOfBillingsOnUncompletedContractsOrProgramsExpectedToBeCollectedWithinOneYear_545999EB84C961B00B8A700C4740EEC5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Costs in Excess of Billings, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CostsInExcessOfBillingsOnUncompletedContractsOrProgramsExpectedToBeCollectedWithinOneYear" xlink:label="loc_us-gaap_CostsInExcessOfBillingsOnUncompletedContractsOrProgramsExpectedToBeCollectedWithinOneYear_545999EB84C961B00B8A700C4740EEC5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CostsInExcessOfBillingsOnUncompletedContractsOrProgramsExpectedToBeCollectedWithinOneYear_545999EB84C961B00B8A700C4740EEC5" xlink:to="lab_us-gaap_CostsInExcessOfBillingsOnUncompletedContractsOrProgramsExpectedToBeCollectedWithinOneYear_545999EB84C961B00B8A700C4740EEC5" xlink:type="arc" />
    <link:label id="lab_us-gaap_BillingsInExcessOfCostCurrent_855DBA93433F1C0BEEFE700C474089D4_negatedLabel_en-US" xlink:label="lab_us-gaap_BillingsInExcessOfCostCurrent_855DBA93433F1C0BEEFE700C474089D4" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Less: billings to date</link:label>
    <link:label id="lab_us-gaap_BillingsInExcessOfCostCurrent_855DBA93433F1C0BEEFE700C474089D4_label_en-US" xlink:label="lab_us-gaap_BillingsInExcessOfCostCurrent_855DBA93433F1C0BEEFE700C474089D4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Billings in Excess of Cost, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_BillingsInExcessOfCostCurrent" xlink:label="loc_us-gaap_BillingsInExcessOfCostCurrent_855DBA93433F1C0BEEFE700C474089D4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BillingsInExcessOfCostCurrent_855DBA93433F1C0BEEFE700C474089D4" xlink:to="lab_us-gaap_BillingsInExcessOfCostCurrent_855DBA93433F1C0BEEFE700C474089D4" xlink:type="arc" />
    <link:label id="lab_us-gaap_CostsInExcessOfBillingsOnUncompletedContractsOrPrograms_BF186C4B74DF2A084D34700C474090F5_totalLabel_en-US" xlink:label="lab_us-gaap_CostsInExcessOfBillingsOnUncompletedContractsOrPrograms_BF186C4B74DF2A084D34700C474090F5" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total costs in excess of billings</link:label>
    <link:label id="lab_us-gaap_CostsInExcessOfBillingsOnUncompletedContractsOrPrograms_BF186C4B74DF2A084D34700C474090F5_label_en-US" xlink:label="lab_us-gaap_CostsInExcessOfBillingsOnUncompletedContractsOrPrograms_BF186C4B74DF2A084D34700C474090F5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Costs in Excess of Billings</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CostsInExcessOfBillingsOnUncompletedContractsOrPrograms" xlink:label="loc_us-gaap_CostsInExcessOfBillingsOnUncompletedContractsOrPrograms_BF186C4B74DF2A084D34700C474090F5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CostsInExcessOfBillingsOnUncompletedContractsOrPrograms_BF186C4B74DF2A084D34700C474090F5" xlink:to="lab_us-gaap_CostsInExcessOfBillingsOnUncompletedContractsOrPrograms_BF186C4B74DF2A084D34700C474090F5" xlink:type="arc" />
    <link:label id="lab_dy_CostsAndEstimatedEarningsInExcessOfBillings_B93C1FCB17A2B6B9E037700C47400BD6_terseLabel_en-US" xlink:label="lab_dy_CostsAndEstimatedEarningsInExcessOfBillings_B93C1FCB17A2B6B9E037700C47400BD6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Costs and estimated earnings in excess of billings</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_CostsAndEstimatedEarningsInExcessOfBillings" xlink:label="loc_dy_CostsAndEstimatedEarningsInExcessOfBillings_B93C1FCB17A2B6B9E037700C47400BD6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_CostsAndEstimatedEarningsInExcessOfBillings_B93C1FCB17A2B6B9E037700C47400BD6" xlink:to="lab_dy_CostsAndEstimatedEarningsInExcessOfBillings_B93C1FCB17A2B6B9E037700C47400BD6" xlink:type="arc" />
    <link:label id="lab_dy_BillingsInExcessOfCostsAndEstimatedEarnings_2851C1BC9C1631FE102C700C474021D7_negatedTerseLabel_en-US" xlink:label="lab_dy_BillingsInExcessOfCostsAndEstimatedEarnings_2851C1BC9C1631FE102C700C474021D7" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Billings in excess of costs and estimated earnings</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_BillingsInExcessOfCostsAndEstimatedEarnings" xlink:label="loc_dy_BillingsInExcessOfCostsAndEstimatedEarnings_2851C1BC9C1631FE102C700C474021D7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_BillingsInExcessOfCostsAndEstimatedEarnings_2851C1BC9C1631FE102C700C474021D7" xlink:to="lab_dy_BillingsInExcessOfCostsAndEstimatedEarnings_2851C1BC9C1631FE102C700C474021D7" xlink:type="arc" />
    <link:label id="lab_us-gaap_CostsInExcessOfBillingsOnUncompletedContractsOrPrograms_267E44503D7FAA8AA6E6700C4740A83A_verboseLabel_en-US" xlink:label="lab_us-gaap_CostsInExcessOfBillingsOnUncompletedContractsOrPrograms_267E44503D7FAA8AA6E6700C4740A83A" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Total costs in excess of billings</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CostsInExcessOfBillingsOnUncompletedContractsOrPrograms" xlink:label="loc_us-gaap_CostsInExcessOfBillingsOnUncompletedContractsOrPrograms_267E44503D7FAA8AA6E6700C4740A83A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CostsInExcessOfBillingsOnUncompletedContractsOrPrograms_267E44503D7FAA8AA6E6700C4740A83A" xlink:to="lab_us-gaap_CostsInExcessOfBillingsOnUncompletedContractsOrPrograms_267E44503D7FAA8AA6E6700C4740A83A" xlink:type="arc" />
    <link:label id="lab_dy_ScheduleOfStockBasedCompensationExpenseAndRelatedTaxTableTextBlock_37DB4A95935E9586B668700C4647B92B_terseLabel_en-US" xlink:label="lab_dy_ScheduleOfStockBasedCompensationExpenseAndRelatedTaxTableTextBlock_37DB4A95935E9586B668700C4647B92B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Stock-based Compensation Expense and Related Tax Benefit Recognized</link:label>
    <link:label id="lab_dy_ScheduleOfStockBasedCompensationExpenseAndRelatedTaxTableTextBlock_37DB4A95935E9586B668700C4647B92B_label_en-US" xlink:label="lab_dy_ScheduleOfStockBasedCompensationExpenseAndRelatedTaxTableTextBlock_37DB4A95935E9586B668700C4647B92B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Stock Based Compensation Expense and Related Tax [Table Text Block]</link:label>
    <link:label id="lab_dy_ScheduleOfStockBasedCompensationExpenseAndRelatedTaxTableTextBlock_37DB4A95935E9586B668700C4647B92B_documentation_en-US" xlink:label="lab_dy_ScheduleOfStockBasedCompensationExpenseAndRelatedTaxTableTextBlock_37DB4A95935E9586B668700C4647B92B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Schedule of Stock Based Compensation Expense and Related Tax</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_ScheduleOfStockBasedCompensationExpenseAndRelatedTaxTableTextBlock" xlink:label="loc_dy_ScheduleOfStockBasedCompensationExpenseAndRelatedTaxTableTextBlock_37DB4A95935E9586B668700C4647B92B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_ScheduleOfStockBasedCompensationExpenseAndRelatedTaxTableTextBlock_37DB4A95935E9586B668700C4647B92B" xlink:to="lab_dy_ScheduleOfStockBasedCompensationExpenseAndRelatedTaxTableTextBlock_37DB4A95935E9586B668700C4647B92B" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock_01165F74BB14C1998CEA700C4647892D_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock_01165F74BB14C1998CEA700C4647892D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Share-based Compensation, Stock Options Award Activity</link:label>
    <link:label id="lab_us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock_01165F74BB14C1998CEA700C4647892D_label_en-US" xlink:label="lab_us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock_01165F74BB14C1998CEA700C4647892D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock_01165F74BB14C1998CEA700C4647892D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock_01165F74BB14C1998CEA700C4647892D" xlink:to="lab_us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock_01165F74BB14C1998CEA700C4647892D" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfSharebasedCompensationRestrictedStockAndRestrictedStockUnitsActivityTableTextBlock_21F64B69CD76976A13D4700C4647F2A1_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfSharebasedCompensationRestrictedStockAndRestrictedStockUnitsActivityTableTextBlock_21F64B69CD76976A13D4700C4647F2A1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Share-based Compensation, RSU and Performance RSU Activity</link:label>
    <link:label id="lab_us-gaap_ScheduleOfSharebasedCompensationRestrictedStockAndRestrictedStockUnitsActivityTableTextBlock_21F64B69CD76976A13D4700C4647F2A1_label_en-US" xlink:label="lab_us-gaap_ScheduleOfSharebasedCompensationRestrictedStockAndRestrictedStockUnitsActivityTableTextBlock_21F64B69CD76976A13D4700C4647F2A1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ScheduleOfSharebasedCompensationRestrictedStockAndRestrictedStockUnitsActivityTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfSharebasedCompensationRestrictedStockAndRestrictedStockUnitsActivityTableTextBlock_21F64B69CD76976A13D4700C4647F2A1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfSharebasedCompensationRestrictedStockAndRestrictedStockUnitsActivityTableTextBlock_21F64B69CD76976A13D4700C4647F2A1" xlink:to="lab_us-gaap_ScheduleOfSharebasedCompensationRestrictedStockAndRestrictedStockUnitsActivityTableTextBlock_21F64B69CD76976A13D4700C4647F2A1" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfAccruedLiabilitiesTableTextBlock_0C3DD0C77BC97012CA67700C46E3EB6C_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfAccruedLiabilitiesTableTextBlock_0C3DD0C77BC97012CA67700C46E3EB6C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Other Accrued Liabilities</link:label>
    <link:label id="lab_us-gaap_ScheduleOfAccruedLiabilitiesTableTextBlock_0C3DD0C77BC97012CA67700C46E3EB6C_label_en-US" xlink:label="lab_us-gaap_ScheduleOfAccruedLiabilitiesTableTextBlock_0C3DD0C77BC97012CA67700C46E3EB6C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Accrued Liabilities [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ScheduleOfAccruedLiabilitiesTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfAccruedLiabilitiesTableTextBlock_0C3DD0C77BC97012CA67700C46E3EB6C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfAccruedLiabilitiesTableTextBlock_0C3DD0C77BC97012CA67700C46E3EB6C" xlink:to="lab_us-gaap_ScheduleOfAccruedLiabilitiesTableTextBlock_0C3DD0C77BC97012CA67700C46E3EB6C" xlink:type="arc" />
    <link:label id="lab_us-gaap_GoodwillRollForward_07ACED5E4DAC2E4CFFE8700C4676BCFB_terseLabel_en-US" xlink:label="lab_us-gaap_GoodwillRollForward_07ACED5E4DAC2E4CFFE8700C4676BCFB" 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_07ACED5E4DAC2E4CFFE8700C4676BCFB_label_en-US" xlink:label="lab_us-gaap_GoodwillRollForward_07ACED5E4DAC2E4CFFE8700C4676BCFB" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_GoodwillRollForward" xlink:label="loc_us-gaap_GoodwillRollForward_07ACED5E4DAC2E4CFFE8700C4676BCFB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GoodwillRollForward_07ACED5E4DAC2E4CFFE8700C4676BCFB" xlink:to="lab_us-gaap_GoodwillRollForward_07ACED5E4DAC2E4CFFE8700C4676BCFB" xlink:type="arc" />
    <link:label id="lab_us-gaap_GoodwillGross_F448AAE438B60B0D7347700C4676BB5B_periodStartLabel_en-US" xlink:label="lab_us-gaap_GoodwillGross_F448AAE438B60B0D7347700C4676BB5B" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Goodwill, gross, beginning balance</link:label>
    <link:label id="lab_us-gaap_GoodwillGross_F448AAE438B60B0D7347700C4676BB5B_label_en-US" xlink:label="lab_us-gaap_GoodwillGross_F448AAE438B60B0D7347700C4676BB5B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill, Gross</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_GoodwillGross" xlink:label="loc_us-gaap_GoodwillGross_F448AAE438B60B0D7347700C4676BB5B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GoodwillGross_F448AAE438B60B0D7347700C4676BB5B" xlink:to="lab_us-gaap_GoodwillGross_F448AAE438B60B0D7347700C4676BB5B" xlink:type="arc" />
    <link:label id="lab_us-gaap_GoodwillAcquiredDuringPeriod_4A653666DF945F803702700C4676C279_terseLabel_en-US" xlink:label="lab_us-gaap_GoodwillAcquiredDuringPeriod_4A653666DF945F803702700C4676C279" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Goodwill acquisitions</link:label>
    <link:label id="lab_us-gaap_GoodwillAcquiredDuringPeriod_4A653666DF945F803702700C4676C279_label_en-US" xlink:label="lab_us-gaap_GoodwillAcquiredDuringPeriod_4A653666DF945F803702700C4676C279" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill, Acquired During Period</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_GoodwillAcquiredDuringPeriod" xlink:label="loc_us-gaap_GoodwillAcquiredDuringPeriod_4A653666DF945F803702700C4676C279" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GoodwillAcquiredDuringPeriod_4A653666DF945F803702700C4676C279" xlink:to="lab_us-gaap_GoodwillAcquiredDuringPeriod_4A653666DF945F803702700C4676C279" xlink:type="arc" />
    <link:label id="lab_us-gaap_GoodwillGross_160B4E37938F4A78E2CE700C4676EF0F_periodEndLabel_en-US" xlink:label="lab_us-gaap_GoodwillGross_160B4E37938F4A78E2CE700C4676EF0F" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Goodwill, gross, ending balance</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_GoodwillGross" xlink:label="loc_us-gaap_GoodwillGross_160B4E37938F4A78E2CE700C4676EF0F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GoodwillGross_160B4E37938F4A78E2CE700C4676EF0F" xlink:to="lab_us-gaap_GoodwillGross_160B4E37938F4A78E2CE700C4676EF0F" xlink:type="arc" />
    <link:label id="lab_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_F42E054ADA72D159D4A8700C4676B95D_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_F42E054ADA72D159D4A8700C4676B95D" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Accumulated impairment losses</link:label>
    <link:label id="lab_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_F42E054ADA72D159D4A8700C4676B95D_label_en-US" xlink:label="lab_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_F42E054ADA72D159D4A8700C4676B95D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill, Impaired, Accumulated Impairment Loss</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_GoodwillImpairedAccumulatedImpairmentLoss" xlink:label="loc_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_F42E054ADA72D159D4A8700C4676B95D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_F42E054ADA72D159D4A8700C4676B95D" xlink:to="lab_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_F42E054ADA72D159D4A8700C4676B95D" xlink:type="arc" />
    <link:label id="lab_us-gaap_Goodwill_61A9DF33323B603A652E700C4676377C_totalLabel_en-US" xlink:label="lab_us-gaap_Goodwill_61A9DF33323B603A652E700C4676377C" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Goodwill</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaap_Goodwill_61A9DF33323B603A652E700C4676377C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Goodwill_61A9DF33323B603A652E700C4676377C" xlink:to="lab_us-gaap_Goodwill_61A9DF33323B603A652E700C4676377C" xlink:type="arc" />
    <link:label id="lab_us-gaap_StatementOfCashFlowsAbstract_8988AE0E7F8EFAAA9F3E7846DDC05342_label_en-US" xlink:label="lab_us-gaap_StatementOfCashFlowsAbstract_8988AE0E7F8EFAAA9F3E7846DDC05342" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StatementOfCashFlowsAbstract" xlink:label="loc_us-gaap_StatementOfCashFlowsAbstract_8988AE0E7F8EFAAA9F3E7846DDC05342" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementOfCashFlowsAbstract_8988AE0E7F8EFAAA9F3E7846DDC05342" xlink:to="lab_us-gaap_StatementOfCashFlowsAbstract_8988AE0E7F8EFAAA9F3E7846DDC05342" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_A2F74FF673B4556254967846DDC64576_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_A2F74FF673B4556254967846DDC64576" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net cash provided by (used in) operating activities</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_A2F74FF673B4556254967846DDC64576_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_A2F74FF673B4556254967846DDC64576" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_A2F74FF673B4556254967846DDC64576" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_A2F74FF673B4556254967846DDC64576" xlink:to="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_A2F74FF673B4556254967846DDC64576" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_9099B4B5CC7DC9A59EB27846DDC7D302_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_9099B4B5CC7DC9A59EB27846DDC7D302" 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_NetCashProvidedByUsedInInvestingActivitiesAbstract_9099B4B5CC7DC9A59EB27846DDC7D302_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_9099B4B5CC7DC9A59EB27846DDC7D302" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Investing Activities [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_9099B4B5CC7DC9A59EB27846DDC7D302" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_9099B4B5CC7DC9A59EB27846DDC7D302" xlink:to="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_9099B4B5CC7DC9A59EB27846DDC7D302" xlink:type="arc" />
    <link:label id="lab_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_E6ADB65C6F47A25398057846DDCDE0EB_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_E6ADB65C6F47A25398057846DDCDE0EB" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Cash paid for acquisitions, net of cash acquired</link:label>
    <link:label id="lab_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_E6ADB65C6F47A25398057846DDCDE0EB_label_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_E6ADB65C6F47A25398057846DDCDE0EB" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_E6ADB65C6F47A25398057846DDCDE0EB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_E6ADB65C6F47A25398057846DDCDE0EB" xlink:to="lab_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_E6ADB65C6F47A25398057846DDCDE0EB" xlink:type="arc" />
    <link:label id="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_252AA389E57368A2AD317846DDCD1912_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_252AA389E57368A2AD317846DDCD1912" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Capital expenditures</link:label>
    <link:label id="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_252AA389E57368A2AD317846DDCD1912_label_en-US" xlink:label="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_252AA389E57368A2AD317846DDCD1912" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_252AA389E57368A2AD317846DDCD1912" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_252AA389E57368A2AD317846DDCD1912" xlink:to="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_252AA389E57368A2AD317846DDCD1912" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProceedsFromSaleOfProductiveAssets_24E8ADECB75840225A647846DDCD1D01_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromSaleOfProductiveAssets_24E8ADECB75840225A647846DDCD1D01" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Proceeds from sale of assets</link:label>
    <link:label id="lab_us-gaap_ProceedsFromSaleOfProductiveAssets_24E8ADECB75840225A647846DDCD1D01_label_en-US" xlink:label="lab_us-gaap_ProceedsFromSaleOfProductiveAssets_24E8ADECB75840225A647846DDCD1D01" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from Sale of Productive Assets</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ProceedsFromSaleOfProductiveAssets" xlink:label="loc_us-gaap_ProceedsFromSaleOfProductiveAssets_24E8ADECB75840225A647846DDCD1D01" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromSaleOfProductiveAssets_24E8ADECB75840225A647846DDCD1D01" xlink:to="lab_us-gaap_ProceedsFromSaleOfProductiveAssets_24E8ADECB75840225A647846DDCD1D01" xlink:type="arc" />
    <link:label id="lab_dy_CapitalContributionToSubsidiaries_EDE42339062012D3FBAF7846DDCD3309_negatedTerseLabel_en-US" xlink:label="lab_dy_CapitalContributionToSubsidiaries_EDE42339062012D3FBAF7846DDCD3309" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Return of capital from subsidiaries</link:label>
    <link:label id="lab_dy_CapitalContributionToSubsidiaries_EDE42339062012D3FBAF7846DDCD3309_label_en-US" xlink:label="lab_dy_CapitalContributionToSubsidiaries_EDE42339062012D3FBAF7846DDCD3309" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Capital Contribution To Subsidiaries</link:label>
    <link:label id="lab_dy_CapitalContributionToSubsidiaries_EDE42339062012D3FBAF7846DDCD3309_documentation_en-US" xlink:label="lab_dy_CapitalContributionToSubsidiaries_EDE42339062012D3FBAF7846DDCD3309" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Capital contributions to wholly-owned subsidiaries</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_CapitalContributionToSubsidiaries" xlink:label="loc_dy_CapitalContributionToSubsidiaries_EDE42339062012D3FBAF7846DDCD3309" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_CapitalContributionToSubsidiaries_EDE42339062012D3FBAF7846DDCD3309" xlink:to="lab_dy_CapitalContributionToSubsidiaries_EDE42339062012D3FBAF7846DDCD3309" xlink:type="arc" />
    <link:label id="lab_dy_InvestmentInSubsidiaries_CF0706C46E70A7E855C37846DDCDDB95_negatedTerseLabel_en-US" xlink:label="lab_dy_InvestmentInSubsidiaries_CF0706C46E70A7E855C37846DDCDDB95" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Investment in subsidiaries</link:label>
    <link:label id="lab_dy_InvestmentInSubsidiaries_CF0706C46E70A7E855C37846DDCDDB95_label_en-US" xlink:label="lab_dy_InvestmentInSubsidiaries_CF0706C46E70A7E855C37846DDCDDB95" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Investment in Subsidiaries</link:label>
    <link:label id="lab_dy_InvestmentInSubsidiaries_CF0706C46E70A7E855C37846DDCDDB95_documentation_en-US" xlink:label="lab_dy_InvestmentInSubsidiaries_CF0706C46E70A7E855C37846DDCDDB95" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Investment in Subsidiaries</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_InvestmentInSubsidiaries" xlink:label="loc_dy_InvestmentInSubsidiaries_CF0706C46E70A7E855C37846DDCDDB95" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_InvestmentInSubsidiaries_CF0706C46E70A7E855C37846DDCDDB95" xlink:to="lab_dy_InvestmentInSubsidiaries_CF0706C46E70A7E855C37846DDCDDB95" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncreaseDecreaseInRestrictedCash_4609B4B9032B5870FFD17846DDCD6DF9_negatedLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInRestrictedCash_4609B4B9032B5870FFD17846DDCD6DF9" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Changes in restricted cash</link:label>
    <link:label id="lab_us-gaap_IncreaseDecreaseInRestrictedCash_4609B4B9032B5870FFD17846DDCD6DF9_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInRestrictedCash_4609B4B9032B5870FFD17846DDCD6DF9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Restricted Cash</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncreaseDecreaseInRestrictedCash" xlink:label="loc_us-gaap_IncreaseDecreaseInRestrictedCash_4609B4B9032B5870FFD17846DDCD6DF9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInRestrictedCash_4609B4B9032B5870FFD17846DDCD6DF9" xlink:to="lab_us-gaap_IncreaseDecreaseInRestrictedCash_4609B4B9032B5870FFD17846DDCD6DF9" xlink:type="arc" />
    <link:label id="lab_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_BE411AED7CCE4E24D593785237B4335A_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_BE411AED7CCE4E24D593785237B4335A" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Other investing activities</link:label>
    <link:label id="lab_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_BE411AED7CCE4E24D593785237B4335A_label_en-US" xlink:label="lab_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_BE411AED7CCE4E24D593785237B4335A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments for (Proceeds from) Other Investing Activities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PaymentsForProceedsFromOtherInvestingActivities" xlink:label="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_BE411AED7CCE4E24D593785237B4335A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_BE411AED7CCE4E24D593785237B4335A" xlink:to="lab_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_BE411AED7CCE4E24D593785237B4335A" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_8F501146586E91A9F38F7846DDCD848E_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_8F501146586E91A9F38F7846DDCD848E" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net cash used in investing activities</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_8F501146586E91A9F38F7846DDCD848E_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_8F501146586E91A9F38F7846DDCD848E" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_8F501146586E91A9F38F7846DDCD848E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_8F501146586E91A9F38F7846DDCD848E" xlink:to="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_8F501146586E91A9F38F7846DDCD848E" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_9E47C6FAAD3AB1DA5B007846DDCD339E_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_9E47C6FAAD3AB1DA5B007846DDCD339E" 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_NetCashProvidedByUsedInFinancingActivitiesAbstract_9E47C6FAAD3AB1DA5B007846DDCD339E_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_9E47C6FAAD3AB1DA5B007846DDCD339E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Financing Activities [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_9E47C6FAAD3AB1DA5B007846DDCD339E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_9E47C6FAAD3AB1DA5B007846DDCD339E" xlink:to="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_9E47C6FAAD3AB1DA5B007846DDCD339E" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProceedsFromLongTermLinesOfCredit_A5CF57DCC45C587DCBAF7846DDCDF364_verboseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromLongTermLinesOfCredit_A5CF57DCC45C587DCBAF7846DDCDF364" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Proceeds from borrowings on senior credit agreement, including term loan</link:label>
    <link:label id="lab_us-gaap_ProceedsFromLongTermLinesOfCredit_A5CF57DCC45C587DCBAF7846DDCDF364_label_en-US" xlink:label="lab_us-gaap_ProceedsFromLongTermLinesOfCredit_A5CF57DCC45C587DCBAF7846DDCDF364" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from Long-term Lines of Credit</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ProceedsFromLongTermLinesOfCredit" xlink:label="loc_us-gaap_ProceedsFromLongTermLinesOfCredit_A5CF57DCC45C587DCBAF7846DDCDF364" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromLongTermLinesOfCredit_A5CF57DCC45C587DCBAF7846DDCDF364" xlink:to="lab_us-gaap_ProceedsFromLongTermLinesOfCredit_A5CF57DCC45C587DCBAF7846DDCDF364" xlink:type="arc" />
    <link:label id="lab_us-gaap_RepaymentsOfLongTermLinesOfCredit_3682E0922F92267873EA7846DDCE1B71_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_RepaymentsOfLongTermLinesOfCredit_3682E0922F92267873EA7846DDCE1B71" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Principal payments on senior credit agreement, including term loan</link:label>
    <link:label id="lab_us-gaap_RepaymentsOfLongTermLinesOfCredit_3682E0922F92267873EA7846DDCE1B71_label_en-US" xlink:label="lab_us-gaap_RepaymentsOfLongTermLinesOfCredit_3682E0922F92267873EA7846DDCE1B71" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Repayments of Long-term Lines of Credit</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RepaymentsOfLongTermLinesOfCredit" xlink:label="loc_us-gaap_RepaymentsOfLongTermLinesOfCredit_3682E0922F92267873EA7846DDCE1B71" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RepaymentsOfLongTermLinesOfCredit_3682E0922F92267873EA7846DDCE1B71" xlink:to="lab_us-gaap_RepaymentsOfLongTermLinesOfCredit_3682E0922F92267873EA7846DDCE1B71" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtIssuanceCosts_82745881578A2E3158857846DDCE136F_terseLabel_en-US" xlink:label="lab_us-gaap_DebtIssuanceCosts_82745881578A2E3158857846DDCE136F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt issuance costs</link:label>
    <link:label id="lab_us-gaap_DebtIssuanceCosts_82745881578A2E3158857846DDCE136F_label_en-US" xlink:label="lab_us-gaap_DebtIssuanceCosts_82745881578A2E3158857846DDCE136F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Issuance Cost</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DebtIssuanceCosts" xlink:label="loc_us-gaap_DebtIssuanceCosts_82745881578A2E3158857846DDCE136F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtIssuanceCosts_82745881578A2E3158857846DDCE136F" xlink:to="lab_us-gaap_DebtIssuanceCosts_82745881578A2E3158857846DDCE136F" xlink:type="arc" />
    <link:label id="lab_us-gaap_PaymentsForRepurchaseOfCommonStock_D5F45978E72AA2C7D6EA7846DDCE6663_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_PaymentsForRepurchaseOfCommonStock_D5F45978E72AA2C7D6EA7846DDCE6663" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Repurchases of common stock</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PaymentsForRepurchaseOfCommonStock" xlink:label="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_D5F45978E72AA2C7D6EA7846DDCE6663" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_D5F45978E72AA2C7D6EA7846DDCE6663" xlink:to="lab_us-gaap_PaymentsForRepurchaseOfCommonStock_D5F45978E72AA2C7D6EA7846DDCE6663" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProceedsFromStockOptionsExercised_B8490192283EEE65E66C7846DDCEFAEE_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromStockOptionsExercised_B8490192283EEE65E66C7846DDCEFAEE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Exercise of stock options</link:label>
    <link:label id="lab_us-gaap_ProceedsFromStockOptionsExercised_B8490192283EEE65E66C7846DDCEFAEE_label_en-US" xlink:label="lab_us-gaap_ProceedsFromStockOptionsExercised_B8490192283EEE65E66C7846DDCEFAEE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from Stock Options Exercised</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ProceedsFromStockOptionsExercised" xlink:label="loc_us-gaap_ProceedsFromStockOptionsExercised_B8490192283EEE65E66C7846DDCEFAEE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromStockOptionsExercised_B8490192283EEE65E66C7846DDCEFAEE" xlink:to="lab_us-gaap_ProceedsFromStockOptionsExercised_B8490192283EEE65E66C7846DDCEFAEE" xlink:type="arc" />
    <link:label id="lab_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_EAF7A362B96F278802F87846DDCE7A59_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_EAF7A362B96F278802F87846DDCE7A59" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Restricted stock tax withholdings</link:label>
    <link:label id="lab_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_EAF7A362B96F278802F87846DDCE7A59_label_en-US" xlink:label="lab_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_EAF7A362B96F278802F87846DDCE7A59" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation" xlink:label="loc_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_EAF7A362B96F278802F87846DDCE7A59" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_EAF7A362B96F278802F87846DDCE7A59" xlink:to="lab_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_EAF7A362B96F278802F87846DDCE7A59" xlink:type="arc" />
    <link:label id="lab_us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities_9B215510AA524E8E24F67846DDCE0269_terseLabel_en-US" xlink:label="lab_us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities_9B215510AA524E8E24F67846DDCE0269" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Excess tax benefit from share-based awards</link:label>
    <link:label id="lab_us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities_9B215510AA524E8E24F67846DDCE0269_label_en-US" xlink:label="lab_us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities_9B215510AA524E8E24F67846DDCE0269" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Excess Tax Benefit from Share-based Compensation, Financing Activities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities" xlink:label="loc_us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities_9B215510AA524E8E24F67846DDCE0269" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities_9B215510AA524E8E24F67846DDCE0269" xlink:to="lab_us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities_9B215510AA524E8E24F67846DDCE0269" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_A9222049C5633D1A2B7F7846DDCF2DD9_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_A9222049C5633D1A2B7F7846DDCF2DD9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Intercompany funding</link:label>
    <link:label id="lab_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_A9222049C5633D1A2B7F7846DDCF2DD9_label_en-US" xlink:label="lab_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_A9222049C5633D1A2B7F7846DDCF2DD9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from (Payments for) Other Financing Activities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ProceedsFromPaymentsForOtherFinancingActivities" xlink:label="loc_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_A9222049C5633D1A2B7F7846DDCF2DD9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_A9222049C5633D1A2B7F7846DDCF2DD9" xlink:to="lab_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_A9222049C5633D1A2B7F7846DDCF2DD9" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProceedsFromContributedCapital_0FBCFF6A4E38735E67877846DDCFC74E_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromContributedCapital_0FBCFF6A4E38735E67877846DDCFC74E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Receipt of capital contributions, net</link:label>
    <link:label id="lab_us-gaap_ProceedsFromContributedCapital_0FBCFF6A4E38735E67877846DDCFC74E_label_en-US" xlink:label="lab_us-gaap_ProceedsFromContributedCapital_0FBCFF6A4E38735E67877846DDCFC74E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from Contributed Capital</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ProceedsFromContributedCapital" xlink:label="loc_us-gaap_ProceedsFromContributedCapital_0FBCFF6A4E38735E67877846DDCFC74E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromContributedCapital_0FBCFF6A4E38735E67877846DDCFC74E" xlink:to="lab_us-gaap_ProceedsFromContributedCapital_0FBCFF6A4E38735E67877846DDCFC74E" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_06981211E1C9E29BBD997846DDCFADD8_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_06981211E1C9E29BBD997846DDCFADD8" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net cash used in financing activities</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_06981211E1C9E29BBD997846DDCFADD8_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_06981211E1C9E29BBD997846DDCFADD8" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_06981211E1C9E29BBD997846DDCFADD8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_06981211E1C9E29BBD997846DDCFADD8" xlink:to="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_06981211E1C9E29BBD997846DDCFADD8" xlink:type="arc" />
    <link:label id="lab_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_9FF5C88A172B24F331B37846DDCFE314_totalLabel_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_9FF5C88A172B24F331B37846DDCFE314" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net increase in cash and equivalents</link:label>
    <link:label id="lab_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_9FF5C88A172B24F331B37846DDCFE314_label_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_9FF5C88A172B24F331B37846DDCFE314" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash and Cash Equivalents, Period Increase (Decrease)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:label="loc_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_9FF5C88A172B24F331B37846DDCFE314" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_9FF5C88A172B24F331B37846DDCFE314" xlink:to="lab_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_9FF5C88A172B24F331B37846DDCFE314" xlink:type="arc" />
    <link:label id="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_0D4039B26A681C4508957846DDCF39CC_periodStartLabel_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_0D4039B26A681C4508957846DDCF39CC" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">CASH AND EQUIVALENTS AT BEGINNING OF PERIOD</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_0D4039B26A681C4508957846DDCF39CC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_0D4039B26A681C4508957846DDCF39CC" xlink:to="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_0D4039B26A681C4508957846DDCF39CC" xlink:type="arc" />
    <link:label id="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_83EB20BBB1C6A80B8F887846DDCF02A1_periodEndLabel_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_83EB20BBB1C6A80B8F887846DDCF02A1" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">CASH AND EQUIVALENTS AT END OF PERIOD</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_83EB20BBB1C6A80B8F887846DDCF02A1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_83EB20BBB1C6A80B8F887846DDCF02A1" xlink:to="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_83EB20BBB1C6A80B8F887846DDCF02A1" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_4EACD8DAF8448865DB16700C45F994C5_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_4EACD8DAF8448865DB16700C45F994C5" 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_4EACD8DAF8448865DB16700C45F994C5_label_en-US" xlink:label="lab_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_4EACD8DAF8448865DB16700C45F994C5" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_4EACD8DAF8448865DB16700C45F994C5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_4EACD8DAF8448865DB16700C45F994C5" xlink:to="lab_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_4EACD8DAF8448865DB16700C45F994C5" xlink:type="arc" />
    <link:label id="lab_us-gaap_AwardTypeAxis_EAE72E9776899D568EB0700C45F9B2C6_terseLabel_en-US" xlink:label="lab_us-gaap_AwardTypeAxis_EAE72E9776899D568EB0700C45F9B2C6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Award Type [Axis]</link:label>
    <link:label id="lab_us-gaap_AwardTypeAxis_EAE72E9776899D568EB0700C45F9B2C6_label_en-US" xlink:label="lab_us-gaap_AwardTypeAxis_EAE72E9776899D568EB0700C45F9B2C6" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="loc_us-gaap_AwardTypeAxis_EAE72E9776899D568EB0700C45F9B2C6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AwardTypeAxis_EAE72E9776899D568EB0700C45F9B2C6" xlink:to="lab_us-gaap_AwardTypeAxis_EAE72E9776899D568EB0700C45F9B2C6" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_4B9D9E8E2AED85A99DC1700C45F9115E_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_4B9D9E8E2AED85A99DC1700C45F9115E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Equity Award [Domain]</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_4B9D9E8E2AED85A99DC1700C45F9115E_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_4B9D9E8E2AED85A99DC1700C45F9115E" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_4B9D9E8E2AED85A99DC1700C45F9115E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_4B9D9E8E2AED85A99DC1700C45F9115E" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_4B9D9E8E2AED85A99DC1700C45F9115E" xlink:type="arc" />
    <link:label id="lab_us-gaap_EmployeeStockOptionMember_74F7718B5A15102BBA95700C45F9A7CA_terseLabel_en-US" xlink:label="lab_us-gaap_EmployeeStockOptionMember_74F7718B5A15102BBA95700C45F9A7CA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Stock Options</link:label>
    <link:label id="lab_us-gaap_EmployeeStockOptionMember_74F7718B5A15102BBA95700C45F9A7CA_label_en-US" xlink:label="lab_us-gaap_EmployeeStockOptionMember_74F7718B5A15102BBA95700C45F9A7CA" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_EmployeeStockOptionMember" xlink:label="loc_us-gaap_EmployeeStockOptionMember_74F7718B5A15102BBA95700C45F9A7CA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EmployeeStockOptionMember_74F7718B5A15102BBA95700C45F9A7CA" xlink:to="lab_us-gaap_EmployeeStockOptionMember_74F7718B5A15102BBA95700C45F9A7CA" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_96A1002E50D84319C64F700C45F98706_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_96A1002E50D84319C64F700C45F98706" 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_96A1002E50D84319C64F700C45F98706_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_96A1002E50D84319C64F700C45F98706" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_96A1002E50D84319C64F700C45F98706" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_96A1002E50D84319C64F700C45F98706" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_96A1002E50D84319C64F700C45F98706" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_2405E387DA21EF359E96700C45F9F292_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_2405E387DA21EF359E96700C45F9F292" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Stock Options, Outstanding [Roll Forward]</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_2405E387DA21EF359E96700C45F9F292_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_2405E387DA21EF359E96700C45F9F292" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_2405E387DA21EF359E96700C45F9F292" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_2405E387DA21EF359E96700C45F9F292" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_2405E387DA21EF359E96700C45F9F292" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_5C630AC2529CECA6652D700C45F9097D_periodStartLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_5C630AC2529CECA6652D700C45F9097D" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Outstanding as of</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_5C630AC2529CECA6652D700C45F9097D_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_5C630AC2529CECA6652D700C45F9097D" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_5C630AC2529CECA6652D700C45F9097D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_5C630AC2529CECA6652D700C45F9097D" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_5C630AC2529CECA6652D700C45F9097D" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_EC755887306AA6465E09700C45F99ADC_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_EC755887306AA6465E09700C45F99ADC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Granted</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_EC755887306AA6465E09700C45F99ADC_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_EC755887306AA6465E09700C45F99ADC" 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, Gross</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_EC755887306AA6465E09700C45F99ADC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_EC755887306AA6465E09700C45F99ADC" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_EC755887306AA6465E09700C45F99ADC" xlink:type="arc" />
    <link:label id="lab_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_185EB9DACE7ED9678E48700C45F99C85_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_185EB9DACE7ED9678E48700C45F99C85" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Options exercised</link:label>
    <link:label id="lab_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_185EB9DACE7ED9678E48700C45F99C85_label_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_185EB9DACE7ED9678E48700C45F99C85" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_185EB9DACE7ED9678E48700C45F99C85" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_185EB9DACE7ED9678E48700C45F99C85" xlink:to="lab_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_185EB9DACE7ED9678E48700C45F99C85" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod_B9546AB8E4DB0203F990700C45F9B3A0_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod_B9546AB8E4DB0203F990700C45F9B3A0" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Forfeited or canceled</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod_B9546AB8E4DB0203F990700C45F9B3A0_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod_B9546AB8E4DB0203F990700C45F9B3A0" 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 and Expirations in Period</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod_B9546AB8E4DB0203F990700C45F9B3A0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod_B9546AB8E4DB0203F990700C45F9B3A0" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod_B9546AB8E4DB0203F990700C45F9B3A0" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_7533E15546A626312EC0700C45F94771_periodEndLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_7533E15546A626312EC0700C45F94771" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Outstanding as of</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_7533E15546A626312EC0700C45F94771" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_7533E15546A626312EC0700C45F94771" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_7533E15546A626312EC0700C45F94771" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_CBC09F04C934AB28CDEE700C45F9524C_periodEndLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_CBC09F04C934AB28CDEE700C45F9524C" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Exercisable options</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_CBC09F04C934AB28CDEE700C45F9524C_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_CBC09F04C934AB28CDEE700C45F9524C" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_CBC09F04C934AB28CDEE700C45F9524C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_CBC09F04C934AB28CDEE700C45F9524C" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_CBC09F04C934AB28CDEE700C45F9524C" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_3C2C4D5EB74A702CF6D6700C45F96107_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_3C2C4D5EB74A702CF6D6700C45F96107" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Stock Options, Outstanding, Weighted Average Exercise Price [Roll Forward]</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_3C2C4D5EB74A702CF6D6700C45F96107_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_3C2C4D5EB74A702CF6D6700C45F96107" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_3C2C4D5EB74A702CF6D6700C45F96107" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_3C2C4D5EB74A702CF6D6700C45F96107" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_3C2C4D5EB74A702CF6D6700C45F96107" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_5D87DB23C2ECB97E0CAD700C45F9939F_periodStartLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_5D87DB23C2ECB97E0CAD700C45F9939F" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Outstanding as of</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_5D87DB23C2ECB97E0CAD700C45F9939F_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_5D87DB23C2ECB97E0CAD700C45F9939F" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_5D87DB23C2ECB97E0CAD700C45F9939F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_5D87DB23C2ECB97E0CAD700C45F9939F" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_5D87DB23C2ECB97E0CAD700C45F9939F" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_C24039E105B3A27173E2700C45F977A1_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_C24039E105B3A27173E2700C45F977A1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Granted</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_C24039E105B3A27173E2700C45F977A1_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_C24039E105B3A27173E2700C45F977A1" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_C24039E105B3A27173E2700C45F977A1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_C24039E105B3A27173E2700C45F977A1" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_C24039E105B3A27173E2700C45F977A1" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_1F424EB78845A7D522BE700C45F9E2BC_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_1F424EB78845A7D522BE700C45F9E2BC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Options exercised</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_1F424EB78845A7D522BE700C45F9E2BC_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_1F424EB78845A7D522BE700C45F9E2BC" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_1F424EB78845A7D522BE700C45F9E2BC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_1F424EB78845A7D522BE700C45F9E2BC" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_1F424EB78845A7D522BE700C45F9E2BC" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice_CE2C0D43BD745214DF9E700C45F9BB37_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice_CE2C0D43BD745214DF9E700C45F9BB37" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Forfeited or canceled</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice_CE2C0D43BD745214DF9E700C45F9BB37_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice_CE2C0D43BD745214DF9E700C45F9BB37" 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 and Expirations in Period, Weighted Average Exercise Price</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice_CE2C0D43BD745214DF9E700C45F9BB37" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice_CE2C0D43BD745214DF9E700C45F9BB37" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice_CE2C0D43BD745214DF9E700C45F9BB37" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_4F37B08C7FDF79847077700C45F9CF95_periodEndLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_4F37B08C7FDF79847077700C45F9CF95" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Outstanding as of</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_4F37B08C7FDF79847077700C45F9CF95" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_4F37B08C7FDF79847077700C45F9CF95" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_4F37B08C7FDF79847077700C45F9CF95" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_D4C809405F3872C45C70700C45F9779D_periodEndLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_D4C809405F3872C45C70700C45F9779D" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Exercisable options</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_D4C809405F3872C45C70700C45F9779D_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_D4C809405F3872C45C70700C45F9779D" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_D4C809405F3872C45C70700C45F9779D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_D4C809405F3872C45C70700C45F9779D" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_D4C809405F3872C45C70700C45F9779D" xlink:type="arc" />
    <link:label id="lab_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_E5EE27626A92F5919AC1700C46567F2C_terseLabel_en-US" xlink:label="lab_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_E5EE27626A92F5919AC1700C46567F2C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Indefinite-lived Intangible Assets [Axis]</link:label>
    <link:label id="lab_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_E5EE27626A92F5919AC1700C46567F2C_label_en-US" xlink:label="lab_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_E5EE27626A92F5919AC1700C46567F2C" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_E5EE27626A92F5919AC1700C46567F2C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_E5EE27626A92F5919AC1700C46567F2C" xlink:to="lab_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_E5EE27626A92F5919AC1700C46567F2C" xlink:type="arc" />
    <link:label id="lab_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_7B2155302F9E5D4F708B700C465680F8_terseLabel_en-US" xlink:label="lab_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_7B2155302F9E5D4F708B700C465680F8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Indefinite-lived Intangible Assets, Major Class Name [Domain]</link:label>
    <link:label id="lab_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_7B2155302F9E5D4F708B700C465680F8_label_en-US" xlink:label="lab_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_7B2155302F9E5D4F708B700C465680F8" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_7B2155302F9E5D4F708B700C465680F8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_7B2155302F9E5D4F708B700C465680F8" xlink:to="lab_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_7B2155302F9E5D4F708B700C465680F8" xlink:type="arc" />
    <link:label id="lab_dy_UtiliquestMember_5F64FD3DD48D184DE628700C4656A616_terseLabel_en-US" xlink:label="lab_dy_UtiliquestMember_5F64FD3DD48D184DE628700C4656A616" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">UtiliQuest</link:label>
    <link:label id="lab_dy_UtiliquestMember_5F64FD3DD48D184DE628700C4656A616_label_en-US" xlink:label="lab_dy_UtiliquestMember_5F64FD3DD48D184DE628700C4656A616" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">UtiliQuest [Member]</link:label>
    <link:label id="lab_dy_UtiliquestMember_5F64FD3DD48D184DE628700C4656A616_documentation_en-US" xlink:label="lab_dy_UtiliquestMember_5F64FD3DD48D184DE628700C4656A616" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">A wholly-owned subsidiary of the Company.</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_UtiliquestMember" xlink:label="loc_dy_UtiliquestMember_5F64FD3DD48D184DE628700C4656A616" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_UtiliquestMember_5F64FD3DD48D184DE628700C4656A616" xlink:to="lab_dy_UtiliquestMember_5F64FD3DD48D184DE628700C4656A616" xlink:type="arc" />
    <link:label id="lab_us-gaap_TradeNamesMember_3990018DF27CE1AF98F0700C46568FCD_terseLabel_en-US" xlink:label="lab_us-gaap_TradeNamesMember_3990018DF27CE1AF98F0700C46568FCD" 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_3990018DF27CE1AF98F0700C46568FCD_label_en-US" xlink:label="lab_us-gaap_TradeNamesMember_3990018DF27CE1AF98F0700C46568FCD" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_TradeNamesMember" xlink:label="loc_us-gaap_TradeNamesMember_3990018DF27CE1AF98F0700C46568FCD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_TradeNamesMember_3990018DF27CE1AF98F0700C46568FCD" xlink:to="lab_us-gaap_TradeNamesMember_3990018DF27CE1AF98F0700C46568FCD" xlink:type="arc" />
    <link:label id="lab_us-gaap_NoncompeteAgreementsMember_ABABE41FDF218CB601B5700C465634D5_terseLabel_en-US" xlink:label="lab_us-gaap_NoncompeteAgreementsMember_ABABE41FDF218CB601B5700C465634D5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Non-compete agreements</link:label>
    <link:label id="lab_us-gaap_NoncompeteAgreementsMember_ABABE41FDF218CB601B5700C465634D5_label_en-US" xlink:label="lab_us-gaap_NoncompeteAgreementsMember_ABABE41FDF218CB601B5700C465634D5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Noncompete Agreements [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NoncompeteAgreementsMember" xlink:label="loc_us-gaap_NoncompeteAgreementsMember_ABABE41FDF218CB601B5700C465634D5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NoncompeteAgreementsMember_ABABE41FDF218CB601B5700C465634D5" xlink:to="lab_us-gaap_NoncompeteAgreementsMember_ABABE41FDF218CB601B5700C465634D5" xlink:type="arc" />
    <link:label id="lab_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_0D1620A2745CABD5EE11700C4656A354_terseLabel_en-US" xlink:label="lab_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_0D1620A2745CABD5EE11700C4656A354" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">UtiliQuest trade name</link:label>
    <link:label id="lab_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_0D1620A2745CABD5EE11700C4656A354_label_en-US" xlink:label="lab_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_0D1620A2745CABD5EE11700C4656A354" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Indefinite-Lived Intangible Assets (Excluding Goodwill)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_0D1620A2745CABD5EE11700C4656A354" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_0D1620A2745CABD5EE11700C4656A354" xlink:to="lab_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_0D1620A2745CABD5EE11700C4656A354" xlink:type="arc" />
    <link:label id="lab_us-gaap_IntangibleAssetsGrossExcludingGoodwill_4936FB5EC69E49701F49700C4656A5BB_terseLabel_en-US" xlink:label="lab_us-gaap_IntangibleAssetsGrossExcludingGoodwill_4936FB5EC69E49701F49700C4656A5BB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Intangible Assets Gross Excluding Goodwill</link:label>
    <link:label id="lab_us-gaap_IntangibleAssetsGrossExcludingGoodwill_4936FB5EC69E49701F49700C4656A5BB_label_en-US" xlink:label="lab_us-gaap_IntangibleAssetsGrossExcludingGoodwill_4936FB5EC69E49701F49700C4656A5BB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Intangible Assets, Gross (Excluding Goodwill)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IntangibleAssetsGrossExcludingGoodwill" xlink:label="loc_us-gaap_IntangibleAssetsGrossExcludingGoodwill_4936FB5EC69E49701F49700C4656A5BB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IntangibleAssetsGrossExcludingGoodwill_4936FB5EC69E49701F49700C4656A5BB" xlink:to="lab_us-gaap_IntangibleAssetsGrossExcludingGoodwill_4936FB5EC69E49701F49700C4656A5BB" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_FB8654A4003E18F97C76700C46563030_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_FB8654A4003E18F97C76700C46563030" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Accumulated Amortization</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_FB8654A4003E18F97C76700C46563030_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_FB8654A4003E18F97C76700C46563030" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_FB8654A4003E18F97C76700C46563030" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_FB8654A4003E18F97C76700C46563030" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_FB8654A4003E18F97C76700C46563030" xlink:type="arc" />
    <link:label id="lab_dy_CapitalStockTextBlock_540496A4FACD74A72B51700C46C4CDDE_terseLabel_en-US" xlink:label="lab_dy_CapitalStockTextBlock_540496A4FACD74A72B51700C46C4CDDE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Capital Stock</link:label>
    <link:label id="lab_dy_CapitalStockTextBlock_540496A4FACD74A72B51700C46C4CDDE_label_en-US" xlink:label="lab_dy_CapitalStockTextBlock_540496A4FACD74A72B51700C46C4CDDE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Capital Stock [Text Block]</link:label>
    <link:label id="lab_dy_CapitalStockTextBlock_540496A4FACD74A72B51700C46C4CDDE_documentation_en-US" xlink:label="lab_dy_CapitalStockTextBlock_540496A4FACD74A72B51700C46C4CDDE" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The entire disclosure of share repurchases under the current and prior share repurchase authorizations.</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_CapitalStockTextBlock" xlink:label="loc_dy_CapitalStockTextBlock_540496A4FACD74A72B51700C46C4CDDE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_CapitalStockTextBlock_540496A4FACD74A72B51700C46C4CDDE" xlink:to="lab_dy_CapitalStockTextBlock_540496A4FACD74A72B51700C46C4CDDE" xlink:type="arc" />
    <link:label id="lab_us-gaap_StatementTable_AE14702DD5327CFB7AB7700C45F9B93A_terseLabel_en-US" xlink:label="lab_us-gaap_StatementTable_AE14702DD5327CFB7AB7700C45F9B93A" 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_AE14702DD5327CFB7AB7700C45F9B93A_label_en-US" xlink:label="lab_us-gaap_StatementTable_AE14702DD5327CFB7AB7700C45F9B93A" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_AE14702DD5327CFB7AB7700C45F9B93A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementTable_AE14702DD5327CFB7AB7700C45F9B93A" xlink:to="lab_us-gaap_StatementTable_AE14702DD5327CFB7AB7700C45F9B93A" xlink:type="arc" />
    <link:label id="lab_us-gaap_StatementScenarioAxis_6ED006786864B52FE0C0700C45F98075_terseLabel_en-US" xlink:label="lab_us-gaap_StatementScenarioAxis_6ED006786864B52FE0C0700C45F98075" 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_6ED006786864B52FE0C0700C45F98075_label_en-US" xlink:label="lab_us-gaap_StatementScenarioAxis_6ED006786864B52FE0C0700C45F98075" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StatementScenarioAxis" xlink:label="loc_us-gaap_StatementScenarioAxis_6ED006786864B52FE0C0700C45F98075" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementScenarioAxis_6ED006786864B52FE0C0700C45F98075" xlink:to="lab_us-gaap_StatementScenarioAxis_6ED006786864B52FE0C0700C45F98075" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScenarioUnspecifiedDomain_FE0FD3D67DE0E45C56AC700C45F9F6DB_terseLabel_en-US" xlink:label="lab_us-gaap_ScenarioUnspecifiedDomain_FE0FD3D67DE0E45C56AC700C45F9F6DB" 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_FE0FD3D67DE0E45C56AC700C45F9F6DB_label_en-US" xlink:label="lab_us-gaap_ScenarioUnspecifiedDomain_FE0FD3D67DE0E45C56AC700C45F9F6DB" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="loc_us-gaap_ScenarioUnspecifiedDomain_FE0FD3D67DE0E45C56AC700C45F9F6DB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScenarioUnspecifiedDomain_FE0FD3D67DE0E45C56AC700C45F9F6DB" xlink:to="lab_us-gaap_ScenarioUnspecifiedDomain_FE0FD3D67DE0E45C56AC700C45F9F6DB" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScenarioForecastMember_E05A20FD35F6D19B1AA6700C45F9E730_terseLabel_en-US" xlink:label="lab_us-gaap_ScenarioForecastMember_E05A20FD35F6D19B1AA6700C45F9E730" 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_E05A20FD35F6D19B1AA6700C45F9E730_label_en-US" xlink:label="lab_us-gaap_ScenarioForecastMember_E05A20FD35F6D19B1AA6700C45F9E730" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ScenarioForecastMember" xlink:label="loc_us-gaap_ScenarioForecastMember_E05A20FD35F6D19B1AA6700C45F9E730" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScenarioForecastMember_E05A20FD35F6D19B1AA6700C45F9E730" xlink:to="lab_us-gaap_ScenarioForecastMember_E05A20FD35F6D19B1AA6700C45F9E730" xlink:type="arc" />
    <link:label id="lab_dy_AccruedInsuranceClaimsLineItems_A82D402881F15D017D1E700C45F9B38E_terseLabel_en-US" xlink:label="lab_dy_AccruedInsuranceClaimsLineItems_A82D402881F15D017D1E700C45F9B38E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accrued Insurance Claims [Line Items]</link:label>
    <link:label id="lab_dy_AccruedInsuranceClaimsLineItems_A82D402881F15D017D1E700C45F9B38E_label_en-US" xlink:label="lab_dy_AccruedInsuranceClaimsLineItems_A82D402881F15D017D1E700C45F9B38E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accrued Insurance Claims [Line Items]</link:label>
    <link:label id="lab_dy_AccruedInsuranceClaimsLineItems_A82D402881F15D017D1E700C45F9B38E_documentation_en-US" xlink:label="lab_dy_AccruedInsuranceClaimsLineItems_A82D402881F15D017D1E700C45F9B38E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Accrued Insurance Claims [Line Items]</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_AccruedInsuranceClaimsLineItems" xlink:label="loc_dy_AccruedInsuranceClaimsLineItems_A82D402881F15D017D1E700C45F9B38E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_AccruedInsuranceClaimsLineItems_A82D402881F15D017D1E700C45F9B38E" xlink:to="lab_dy_AccruedInsuranceClaimsLineItems_A82D402881F15D017D1E700C45F9B38E" xlink:type="arc" />
    <link:label id="lab_dy_AutomobileInsuranceLiabilityGeneralLiabilityAndWorkersCompensation_ABF5CB642E0071AA9DD0700C45F97DDC_terseLabel_en-US" xlink:label="lab_dy_AutomobileInsuranceLiabilityGeneralLiabilityAndWorkersCompensation_ABF5CB642E0071AA9DD0700C45F97DDC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Retained risk of loss, general liability and workers' compensation, maximum automobile liability</link:label>
    <link:label id="lab_dy_AutomobileInsuranceLiabilityGeneralLiabilityAndWorkersCompensation_ABF5CB642E0071AA9DD0700C45F97DDC_label_en-US" xlink:label="lab_dy_AutomobileInsuranceLiabilityGeneralLiabilityAndWorkersCompensation_ABF5CB642E0071AA9DD0700C45F97DDC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Automobile Insurance Liability, General Liability and Workers' Compensation</link:label>
    <link:label id="lab_dy_AutomobileInsuranceLiabilityGeneralLiabilityAndWorkersCompensation_ABF5CB642E0071AA9DD0700C45F97DDC_documentation_en-US" xlink:label="lab_dy_AutomobileInsuranceLiabilityGeneralLiabilityAndWorkersCompensation_ABF5CB642E0071AA9DD0700C45F97DDC" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The maximum retained risk of loss per occurrence for automobile liability.</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_AutomobileInsuranceLiabilityGeneralLiabilityAndWorkersCompensation" xlink:label="loc_dy_AutomobileInsuranceLiabilityGeneralLiabilityAndWorkersCompensation_ABF5CB642E0071AA9DD0700C45F97DDC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_AutomobileInsuranceLiabilityGeneralLiabilityAndWorkersCompensation_ABF5CB642E0071AA9DD0700C45F97DDC" xlink:to="lab_dy_AutomobileInsuranceLiabilityGeneralLiabilityAndWorkersCompensation_ABF5CB642E0071AA9DD0700C45F97DDC" xlink:type="arc" />
    <link:label id="lab_dy_AggregateStopLossCoverageforAutomobileLiabilityGeneralLiabilityandWorkersCompensationClaimsBeforeAdjustmentIncrease_50A623A79E38D2B8A752700C45F9500F_terseLabel_en-US" xlink:label="lab_dy_AggregateStopLossCoverageforAutomobileLiabilityGeneralLiabilityandWorkersCompensationClaimsBeforeAdjustmentIncrease_50A623A79E38D2B8A752700C45F9500F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Aggregate stop loss coverage for automobile liability, general liability, and workers' compensation claims before adjustment</link:label>
    <link:label id="lab_dy_AggregateStopLossCoverageforAutomobileLiabilityGeneralLiabilityandWorkersCompensationClaimsBeforeAdjustmentIncrease_50A623A79E38D2B8A752700C45F9500F_label_en-US" xlink:label="lab_dy_AggregateStopLossCoverageforAutomobileLiabilityGeneralLiabilityandWorkersCompensationClaimsBeforeAdjustmentIncrease_50A623A79E38D2B8A752700C45F9500F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Aggregate Stop Loss Coverage for Automobile Liability, General Liability, and Workers' Compensation Claims Before Adjustment Increase</link:label>
    <link:label id="lab_dy_AggregateStopLossCoverageforAutomobileLiabilityGeneralLiabilityandWorkersCompensationClaimsBeforeAdjustmentIncrease_50A623A79E38D2B8A752700C45F9500F_documentation_en-US" xlink:label="lab_dy_AggregateStopLossCoverageforAutomobileLiabilityGeneralLiabilityandWorkersCompensationClaimsBeforeAdjustmentIncrease_50A623A79E38D2B8A752700C45F9500F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Aggregate Stop Loss Coverage for Automobile Liability, General Liability, and Workers' Compensation Claims Before Adjustment Increase</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_AggregateStopLossCoverageforAutomobileLiabilityGeneralLiabilityandWorkersCompensationClaimsBeforeAdjustmentIncrease" xlink:label="loc_dy_AggregateStopLossCoverageforAutomobileLiabilityGeneralLiabilityandWorkersCompensationClaimsBeforeAdjustmentIncrease_50A623A79E38D2B8A752700C45F9500F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_AggregateStopLossCoverageforAutomobileLiabilityGeneralLiabilityandWorkersCompensationClaimsBeforeAdjustmentIncrease_50A623A79E38D2B8A752700C45F9500F" xlink:to="lab_dy_AggregateStopLossCoverageforAutomobileLiabilityGeneralLiabilityandWorkersCompensationClaimsBeforeAdjustmentIncrease_50A623A79E38D2B8A752700C45F9500F" xlink:type="arc" />
    <link:label id="lab_dy_InsuranceLiabilityAnnualRetainedRiskOfLossUnderEmployeeHealthPlanPerParticipant_A2EF2ED602A5A32F5492700C45F9B03E_terseLabel_en-US" xlink:label="lab_dy_InsuranceLiabilityAnnualRetainedRiskOfLossUnderEmployeeHealthPlanPerParticipant_A2EF2ED602A5A32F5492700C45F9B03E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Insurance liability, annual retained risk loss</link:label>
    <link:label id="lab_dy_InsuranceLiabilityAnnualRetainedRiskOfLossUnderEmployeeHealthPlanPerParticipant_A2EF2ED602A5A32F5492700C45F9B03E_label_en-US" xlink:label="lab_dy_InsuranceLiabilityAnnualRetainedRiskOfLossUnderEmployeeHealthPlanPerParticipant_A2EF2ED602A5A32F5492700C45F9B03E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Insurance Liability, Annual Retained Risk of Loss, Under Employee Health Plan Per Participant</link:label>
    <link:label id="lab_dy_InsuranceLiabilityAnnualRetainedRiskOfLossUnderEmployeeHealthPlanPerParticipant_A2EF2ED602A5A32F5492700C45F9B03E_documentation_en-US" xlink:label="lab_dy_InsuranceLiabilityAnnualRetainedRiskOfLossUnderEmployeeHealthPlanPerParticipant_A2EF2ED602A5A32F5492700C45F9B03E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Annual retained risk of loss under the employee health plan.</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_InsuranceLiabilityAnnualRetainedRiskOfLossUnderEmployeeHealthPlanPerParticipant" xlink:label="loc_dy_InsuranceLiabilityAnnualRetainedRiskOfLossUnderEmployeeHealthPlanPerParticipant_A2EF2ED602A5A32F5492700C45F9B03E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_InsuranceLiabilityAnnualRetainedRiskOfLossUnderEmployeeHealthPlanPerParticipant_A2EF2ED602A5A32F5492700C45F9B03E" xlink:to="lab_dy_InsuranceLiabilityAnnualRetainedRiskOfLossUnderEmployeeHealthPlanPerParticipant_A2EF2ED602A5A32F5492700C45F9B03E" xlink:type="arc" />
    <link:label id="lab_dy_InsuranceLiabilityRetainedRiskOfLossPerParticipantEmployeeHealthPlanClaimAmountsThatAggregateAcrossAllParticipants_B8A9274FED9BBF82DBA3700C45F95F31_terseLabel_en-US" xlink:label="lab_dy_InsuranceLiabilityRetainedRiskOfLossPerParticipantEmployeeHealthPlanClaimAmountsThatAggregateAcrossAllParticipants_B8A9274FED9BBF82DBA3700C45F95F31" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Retained risk of loss per participant for employee health plan for claim amounts that aggregate across all participants in excess of $250,000</link:label>
    <link:label id="lab_dy_InsuranceLiabilityRetainedRiskOfLossPerParticipantEmployeeHealthPlanClaimAmountsThatAggregateAcrossAllParticipants_B8A9274FED9BBF82DBA3700C45F95F31_label_en-US" xlink:label="lab_dy_InsuranceLiabilityRetainedRiskOfLossPerParticipantEmployeeHealthPlanClaimAmountsThatAggregateAcrossAllParticipants_B8A9274FED9BBF82DBA3700C45F95F31" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Insurance Liability, Retained Risk of Loss, Per Participant Employee Health Plan Claim Amounts that Aggregate Across All Participants</link:label>
    <link:label id="lab_dy_InsuranceLiabilityRetainedRiskOfLossPerParticipantEmployeeHealthPlanClaimAmountsThatAggregateAcrossAllParticipants_B8A9274FED9BBF82DBA3700C45F95F31_documentation_en-US" xlink:label="lab_dy_InsuranceLiabilityRetainedRiskOfLossPerParticipantEmployeeHealthPlanClaimAmountsThatAggregateAcrossAllParticipants_B8A9274FED9BBF82DBA3700C45F95F31" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Retained risk of loss per participant for employee health plan for claim amounts that aggregate across all participants in excess of $250,000</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_InsuranceLiabilityRetainedRiskOfLossPerParticipantEmployeeHealthPlanClaimAmountsThatAggregateAcrossAllParticipants" xlink:label="loc_dy_InsuranceLiabilityRetainedRiskOfLossPerParticipantEmployeeHealthPlanClaimAmountsThatAggregateAcrossAllParticipants_B8A9274FED9BBF82DBA3700C45F95F31" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_InsuranceLiabilityRetainedRiskOfLossPerParticipantEmployeeHealthPlanClaimAmountsThatAggregateAcrossAllParticipants_B8A9274FED9BBF82DBA3700C45F95F31" xlink:to="lab_dy_InsuranceLiabilityRetainedRiskOfLossPerParticipantEmployeeHealthPlanClaimAmountsThatAggregateAcrossAllParticipants_B8A9274FED9BBF82DBA3700C45F95F31" xlink:type="arc" />
    <link:label id="lab_dy_InsuranceLiabilityRetainedRiskOfLossEmployeeHealthPlanThreshold_0BEE5906D18AB5D1063D700C45F96573_terseLabel_en-US" xlink:label="lab_dy_InsuranceLiabilityRetainedRiskOfLossEmployeeHealthPlanThreshold_0BEE5906D18AB5D1063D700C45F96573" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Health plan participant threshold</link:label>
    <link:label id="lab_dy_InsuranceLiabilityRetainedRiskOfLossEmployeeHealthPlanThreshold_0BEE5906D18AB5D1063D700C45F96573_label_en-US" xlink:label="lab_dy_InsuranceLiabilityRetainedRiskOfLossEmployeeHealthPlanThreshold_0BEE5906D18AB5D1063D700C45F96573" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Insurance Liability, Retained Risk of Loss, Employee Health Plan Threshold</link:label>
    <link:label id="lab_dy_InsuranceLiabilityRetainedRiskOfLossEmployeeHealthPlanThreshold_0BEE5906D18AB5D1063D700C45F96573_documentation_en-US" xlink:label="lab_dy_InsuranceLiabilityRetainedRiskOfLossEmployeeHealthPlanThreshold_0BEE5906D18AB5D1063D700C45F96573" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Threshold for retained risk of loss per participant for employee health plan</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_InsuranceLiabilityRetainedRiskOfLossEmployeeHealthPlanThreshold" xlink:label="loc_dy_InsuranceLiabilityRetainedRiskOfLossEmployeeHealthPlanThreshold_0BEE5906D18AB5D1063D700C45F96573" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_InsuranceLiabilityRetainedRiskOfLossEmployeeHealthPlanThreshold_0BEE5906D18AB5D1063D700C45F96573" xlink:to="lab_dy_InsuranceLiabilityRetainedRiskOfLossEmployeeHealthPlanThreshold_0BEE5906D18AB5D1063D700C45F96573" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccruedInsuranceCurrentAndNoncurrent_0CBA87B7F2503AAC6107700C45F9ACD9_terseLabel_en-US" xlink:label="lab_us-gaap_AccruedInsuranceCurrentAndNoncurrent_0CBA87B7F2503AAC6107700C45F9ACD9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accrued Insurance</link:label>
    <link:label id="lab_us-gaap_AccruedInsuranceCurrentAndNoncurrent_0CBA87B7F2503AAC6107700C45F9ACD9_label_en-US" xlink:label="lab_us-gaap_AccruedInsuranceCurrentAndNoncurrent_0CBA87B7F2503AAC6107700C45F9ACD9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accrued Insurance</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AccruedInsuranceCurrentAndNoncurrent" xlink:label="loc_us-gaap_AccruedInsuranceCurrentAndNoncurrent_0CBA87B7F2503AAC6107700C45F9ACD9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccruedInsuranceCurrentAndNoncurrent_0CBA87B7F2503AAC6107700C45F9ACD9" xlink:to="lab_us-gaap_AccruedInsuranceCurrentAndNoncurrent_0CBA87B7F2503AAC6107700C45F9ACD9" xlink:type="arc" />
    <link:label id="lab_dy_AccruedInsuranceClaimsNoncurrent_468A8E29D11BB15456ED700C45F910FE_verboseLabel_en-US" xlink:label="lab_dy_AccruedInsuranceClaimsNoncurrent_468A8E29D11BB15456ED700C45F910FE" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Accrued insurance claims, Noncurrent</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_AccruedInsuranceClaimsNoncurrent" xlink:label="loc_dy_AccruedInsuranceClaimsNoncurrent_468A8E29D11BB15456ED700C45F910FE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_AccruedInsuranceClaimsNoncurrent_468A8E29D11BB15456ED700C45F910FE" xlink:to="lab_dy_AccruedInsuranceClaimsNoncurrent_468A8E29D11BB15456ED700C45F910FE" xlink:type="arc" />
    <link:label id="lab_us-gaap_CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock_9CA7420D3129431E9E61700C45E990B3_terseLabel_en-US" xlink:label="lab_us-gaap_CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock_9CA7420D3129431E9E61700C45E990B3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Supplemental Consolidating Financial Statements</link:label>
    <link:label id="lab_us-gaap_CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock_9CA7420D3129431E9E61700C45E990B3_label_en-US" xlink:label="lab_us-gaap_CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock_9CA7420D3129431E9E61700C45E990B3" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock" xlink:label="loc_us-gaap_CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock_9CA7420D3129431E9E61700C45E990B3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock_9CA7420D3129431E9E61700C45E990B3" xlink:to="lab_us-gaap_CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock_9CA7420D3129431E9E61700C45E990B3" xlink:type="arc" />
    <link:label id="lab_us-gaap_RestrictedStockUnitsRSUMember_124229B0950675C93DCF700C46851661_terseLabel_en-US" xlink:label="lab_us-gaap_RestrictedStockUnitsRSUMember_124229B0950675C93DCF700C46851661" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">RSUs</link:label>
    <link:label id="lab_us-gaap_RestrictedStockUnitsRSUMember_124229B0950675C93DCF700C46851661_label_en-US" xlink:label="lab_us-gaap_RestrictedStockUnitsRSUMember_124229B0950675C93DCF700C46851661" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RestrictedStockUnitsRSUMember" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_124229B0950675C93DCF700C46851661" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RestrictedStockUnitsRSUMember_124229B0950675C93DCF700C46851661" xlink:to="lab_us-gaap_RestrictedStockUnitsRSUMember_124229B0950675C93DCF700C46851661" xlink:type="arc" />
    <link:label id="lab_us-gaap_PerformanceSharesMember_C1E9CD85FD7A9C4D7753700C4685B977_terseLabel_en-US" xlink:label="lab_us-gaap_PerformanceSharesMember_C1E9CD85FD7A9C4D7753700C4685B977" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Performance RSUs</link:label>
    <link:label id="lab_us-gaap_PerformanceSharesMember_C1E9CD85FD7A9C4D7753700C4685B977_label_en-US" xlink:label="lab_us-gaap_PerformanceSharesMember_C1E9CD85FD7A9C4D7753700C4685B977" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PerformanceSharesMember" xlink:label="loc_us-gaap_PerformanceSharesMember_C1E9CD85FD7A9C4D7753700C4685B977" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PerformanceSharesMember_C1E9CD85FD7A9C4D7753700C4685B977" xlink:to="lab_us-gaap_PerformanceSharesMember_C1E9CD85FD7A9C4D7753700C4685B977" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_73C8096EA36AC6397B2C700C4685E3C8_verboseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_73C8096EA36AC6397B2C700C4685E3C8" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Share Based Compensation Arrangement By Share Based Payment Award Non Option Equity Instruments Outstanding [Roll Forward]</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_73C8096EA36AC6397B2C700C4685E3C8_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_73C8096EA36AC6397B2C700C4685E3C8" 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, Non-Option Equity Instruments, Outstanding [Roll Forward]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_73C8096EA36AC6397B2C700C4685E3C8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_73C8096EA36AC6397B2C700C4685E3C8" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_73C8096EA36AC6397B2C700C4685E3C8" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_D3A8AADDE578C0D384F1700C4685EBCD_periodStartLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_D3A8AADDE578C0D384F1700C4685EBCD" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Outstanding as of</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_D3A8AADDE578C0D384F1700C4685EBCD_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_D3A8AADDE578C0D384F1700C4685EBCD" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_D3A8AADDE578C0D384F1700C4685EBCD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_D3A8AADDE578C0D384F1700C4685EBCD" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_D3A8AADDE578C0D384F1700C4685EBCD" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_0103FDB82DE17C4D1DF4700C46855A8E_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_0103FDB82DE17C4D1DF4700C46855A8E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Granted</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_0103FDB82DE17C4D1DF4700C46855A8E_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_0103FDB82DE17C4D1DF4700C46855A8E" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_0103FDB82DE17C4D1DF4700C46855A8E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_0103FDB82DE17C4D1DF4700C46855A8E" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_0103FDB82DE17C4D1DF4700C46855A8E" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_0194F0B26E8A3A7B75C6700C46853FBC_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_0194F0B26E8A3A7B75C6700C46853FBC" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Share units vested</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_0194F0B26E8A3A7B75C6700C46853FBC_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_0194F0B26E8A3A7B75C6700C46853FBC" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_0194F0B26E8A3A7B75C6700C46853FBC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_0194F0B26E8A3A7B75C6700C46853FBC" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_0194F0B26E8A3A7B75C6700C46853FBC" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_E9B73D985F97DCFA068C700C468584DC_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_E9B73D985F97DCFA068C700C468584DC" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Forfeited or canceled</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_E9B73D985F97DCFA068C700C468584DC_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_E9B73D985F97DCFA068C700C468584DC" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_E9B73D985F97DCFA068C700C468584DC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_E9B73D985F97DCFA068C700C468584DC" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_E9B73D985F97DCFA068C700C468584DC" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_46FBBF42CF22D7B066F2700C468571D8_periodEndLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_46FBBF42CF22D7B066F2700C468571D8" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Outstanding as of</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_46FBBF42CF22D7B066F2700C468571D8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_46FBBF42CF22D7B066F2700C468571D8" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_46FBBF42CF22D7B066F2700C468571D8" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_24231F7550ED8A695D37700C4685E20B_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_24231F7550ED8A695D37700C4685E20B" 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 [Roll Forward]</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_24231F7550ED8A695D37700C4685E20B_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_24231F7550ED8A695D37700C4685E20B" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_24231F7550ED8A695D37700C4685E20B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_24231F7550ED8A695D37700C4685E20B" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_24231F7550ED8A695D37700C4685E20B" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_17ABCF15A7F39B77694A700C46852865_periodStartLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_17ABCF15A7F39B77694A700C46852865" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Outstanding as of</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_17ABCF15A7F39B77694A700C46852865_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_17ABCF15A7F39B77694A700C46852865" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_17ABCF15A7F39B77694A700C46852865" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_17ABCF15A7F39B77694A700C46852865" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_17ABCF15A7F39B77694A700C46852865" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_ADC1469BA1DC10940338700C46852DE4_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_ADC1469BA1DC10940338700C46852DE4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Granted</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_ADC1469BA1DC10940338700C46852DE4_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_ADC1469BA1DC10940338700C46852DE4" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_ADC1469BA1DC10940338700C46852DE4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_ADC1469BA1DC10940338700C46852DE4" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_ADC1469BA1DC10940338700C46852DE4" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_6F3E5172A4BC2605D2EB700C4685924B_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_6F3E5172A4BC2605D2EB700C4685924B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Share units vested</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_6F3E5172A4BC2605D2EB700C4685924B_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_6F3E5172A4BC2605D2EB700C4685924B" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_6F3E5172A4BC2605D2EB700C4685924B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_6F3E5172A4BC2605D2EB700C4685924B" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_6F3E5172A4BC2605D2EB700C4685924B" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_E81FE4A784003F941EE9700C46856069_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_E81FE4A784003F941EE9700C46856069" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Forfeited or canceled</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_E81FE4A784003F941EE9700C46856069_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_E81FE4A784003F941EE9700C46856069" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_E81FE4A784003F941EE9700C46856069" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_E81FE4A784003F941EE9700C46856069" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_E81FE4A784003F941EE9700C46856069" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_529E57664D559D4349F9700C468509F8_periodEndLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_529E57664D559D4349F9700C468509F8" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Outstanding as of</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_529E57664D559D4349F9700C468509F8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_529E57664D559D4349F9700C468509F8" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_529E57664D559D4349F9700C468509F8" xlink:type="arc" />
    <link:label id="lab_us-gaap_DeferredTaxAssetsNetNoncurrent_E91897064B2639EB0B9768E5EF3D48E6_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredTaxAssetsNetNoncurrent_E91897064B2639EB0B9768E5EF3D48E6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deferred tax assets, net non-current</link:label>
    <link:label id="lab_us-gaap_DeferredTaxAssetsNetNoncurrent_E91897064B2639EB0B9768E5EF3D48E6_label_en-US" xlink:label="lab_us-gaap_DeferredTaxAssetsNetNoncurrent_E91897064B2639EB0B9768E5EF3D48E6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred Tax Assets, Net of Valuation Allowance, Noncurrent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DeferredTaxAssetsNetNoncurrent" xlink:label="loc_us-gaap_DeferredTaxAssetsNetNoncurrent_E91897064B2639EB0B9768E5EF3D48E6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DeferredTaxAssetsNetNoncurrent_E91897064B2639EB0B9768E5EF3D48E6" xlink:to="lab_us-gaap_DeferredTaxAssetsNetNoncurrent_E91897064B2639EB0B9768E5EF3D48E6" xlink:type="arc" />
    <link:label id="lab_dy_InvestmentInWhollyOwnedSubsidiaries_98B94129CF062D7ECD9068E5EF3D22FC_terseLabel_en-US" xlink:label="lab_dy_InvestmentInWhollyOwnedSubsidiaries_98B94129CF062D7ECD9068E5EF3D22FC" 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_dy_InvestmentInWhollyOwnedSubsidiaries_98B94129CF062D7ECD9068E5EF3D22FC_label_en-US" xlink:label="lab_dy_InvestmentInWhollyOwnedSubsidiaries_98B94129CF062D7ECD9068E5EF3D22FC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Investment In Wholly Owned Subsidiaries</link:label>
    <link:label id="lab_dy_InvestmentInWhollyOwnedSubsidiaries_98B94129CF062D7ECD9068E5EF3D22FC_documentation_en-US" xlink:label="lab_dy_InvestmentInWhollyOwnedSubsidiaries_98B94129CF062D7ECD9068E5EF3D22FC" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Investment in wholly-owned subsidiaries</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_InvestmentInWhollyOwnedSubsidiaries" xlink:label="loc_dy_InvestmentInWhollyOwnedSubsidiaries_98B94129CF062D7ECD9068E5EF3D22FC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_InvestmentInWhollyOwnedSubsidiaries_98B94129CF062D7ECD9068E5EF3D22FC" xlink:to="lab_dy_InvestmentInWhollyOwnedSubsidiaries_98B94129CF062D7ECD9068E5EF3D22FC" xlink:type="arc" />
    <link:label id="lab_dy_IntercompanyReceivablesAggregate_C34322CFE6FD5101234368E5EF3DC66F_terseLabel_en-US" xlink:label="lab_dy_IntercompanyReceivablesAggregate_C34322CFE6FD5101234368E5EF3DC66F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Intercompany receivables</link:label>
    <link:label id="lab_dy_IntercompanyReceivablesAggregate_C34322CFE6FD5101234368E5EF3DC66F_label_en-US" xlink:label="lab_dy_IntercompanyReceivablesAggregate_C34322CFE6FD5101234368E5EF3DC66F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Intercompany Receivables Aggregate</link:label>
    <link:label id="lab_dy_IntercompanyReceivablesAggregate_C34322CFE6FD5101234368E5EF3DC66F_documentation_en-US" xlink:label="lab_dy_IntercompanyReceivablesAggregate_C34322CFE6FD5101234368E5EF3DC66F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Aggregate amount of intercompany receivables between parent, issuer, guarantor, and non-guarantor entities.</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_IntercompanyReceivablesAggregate" xlink:label="loc_dy_IntercompanyReceivablesAggregate_C34322CFE6FD5101234368E5EF3DC66F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_IntercompanyReceivablesAggregate_C34322CFE6FD5101234368E5EF3DC66F" xlink:to="lab_dy_IntercompanyReceivablesAggregate_C34322CFE6FD5101234368E5EF3DC66F" xlink:type="arc" />
    <link:label id="lab_us-gaap_DeferredTaxLiabilitiesCurrent_3606D408645CF3BCF3C668E5EF3F834A_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredTaxLiabilitiesCurrent_3606D408645CF3BCF3C668E5EF3F834A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deferred tax liabilities</link:label>
    <link:label id="lab_us-gaap_DeferredTaxLiabilitiesCurrent_3606D408645CF3BCF3C668E5EF3F834A_label_en-US" xlink:label="lab_us-gaap_DeferredTaxLiabilitiesCurrent_3606D408645CF3BCF3C668E5EF3F834A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred Tax Liabilities, Net, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DeferredTaxLiabilitiesCurrent" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesCurrent_3606D408645CF3BCF3C668E5EF3F834A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DeferredTaxLiabilitiesCurrent_3606D408645CF3BCF3C668E5EF3F834A" xlink:to="lab_us-gaap_DeferredTaxLiabilitiesCurrent_3606D408645CF3BCF3C668E5EF3F834A" xlink:type="arc" />
    <link:label id="lab_us-gaap_LongTermDebtAndCapitalLeaseObligations_D07AE4590873F6EBD43D68E5EF3FBD3D_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtAndCapitalLeaseObligations_D07AE4590873F6EBD43D68E5EF3FBD3D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Long-term debt</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligations" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_D07AE4590873F6EBD43D68E5EF3FBD3D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_D07AE4590873F6EBD43D68E5EF3FBD3D" xlink:to="lab_us-gaap_LongTermDebtAndCapitalLeaseObligations_D07AE4590873F6EBD43D68E5EF3FBD3D" xlink:type="arc" />
    <link:label id="lab_dy_IntercompanyPayablesAggregate_D9EE00BAAABB26E234CA68E5EF3FF376_terseLabel_en-US" xlink:label="lab_dy_IntercompanyPayablesAggregate_D9EE00BAAABB26E234CA68E5EF3FF376" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Intercompany payables</link:label>
    <link:label id="lab_dy_IntercompanyPayablesAggregate_D9EE00BAAABB26E234CA68E5EF3FF376_label_en-US" xlink:label="lab_dy_IntercompanyPayablesAggregate_D9EE00BAAABB26E234CA68E5EF3FF376" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Intercompany Payables Aggregate</link:label>
    <link:label id="lab_dy_IntercompanyPayablesAggregate_D9EE00BAAABB26E234CA68E5EF3FF376_documentation_en-US" xlink:label="lab_dy_IntercompanyPayablesAggregate_D9EE00BAAABB26E234CA68E5EF3FF376" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Aggregate amount of intercompany payables between parent, issuer, guarantor, and non-guarantor entities.</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_IntercompanyPayablesAggregate" xlink:label="loc_dy_IntercompanyPayablesAggregate_D9EE00BAAABB26E234CA68E5EF3FF376" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_IntercompanyPayablesAggregate_D9EE00BAAABB26E234CA68E5EF3FF376" xlink:to="lab_dy_IntercompanyPayablesAggregate_D9EE00BAAABB26E234CA68E5EF3FF376" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_458F450971CD60C2DC2271AFD63CEDF3_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_458F450971CD60C2DC2271AFD63CEDF3" 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_458F450971CD60C2DC2271AFD63CEDF3_label_en-US" xlink:label="lab_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_458F450971CD60C2DC2271AFD63CEDF3" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_458F450971CD60C2DC2271AFD63CEDF3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_458F450971CD60C2DC2271AFD63CEDF3" xlink:to="lab_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_458F450971CD60C2DC2271AFD63CEDF3" xlink:type="arc" />
    <link:label id="lab_dy_ConnectCableContractorsInc.andSystemsCommunicationsServicesInc.Member_7DDEFA1927E4D6EEA08071BA97EAECCA_terseLabel_en-US" xlink:label="lab_dy_ConnectCableContractorsInc.andSystemsCommunicationsServicesInc.Member_7DDEFA1927E4D6EEA08071BA97EAECCA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cable Installation Contractors</link:label>
    <link:label id="lab_dy_ConnectCableContractorsInc.andSystemsCommunicationsServicesInc.Member_7DDEFA1927E4D6EEA08071BA97EAECCA_label_en-US" xlink:label="lab_dy_ConnectCableContractorsInc.andSystemsCommunicationsServicesInc.Member_7DDEFA1927E4D6EEA08071BA97EAECCA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Connect Cable Contractors, Inc. and Systems Communications Services, Inc. [Member]</link:label>
    <link:label id="lab_dy_ConnectCableContractorsInc.andSystemsCommunicationsServicesInc.Member_7DDEFA1927E4D6EEA08071BA97EAECCA_documentation_en-US" xlink:label="lab_dy_ConnectCableContractorsInc.andSystemsCommunicationsServicesInc.Member_7DDEFA1927E4D6EEA08071BA97EAECCA" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Connect Cable Contractors, Inc. and Systems Communications Services, Inc. [Member]</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_ConnectCableContractorsInc.andSystemsCommunicationsServicesInc.Member" xlink:label="loc_dy_ConnectCableContractorsInc.andSystemsCommunicationsServicesInc.Member_7DDEFA1927E4D6EEA08071BA97EAECCA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_ConnectCableContractorsInc.andSystemsCommunicationsServicesInc.Member_7DDEFA1927E4D6EEA08071BA97EAECCA" xlink:to="lab_dy_ConnectCableContractorsInc.andSystemsCommunicationsServicesInc.Member_7DDEFA1927E4D6EEA08071BA97EAECCA" xlink:type="arc" />
    <link:label id="lab_dy_TelecommunicationsSpecialtyConstructionContractorCanadaMember_B1D3F695CCC2DC596E8871AFD63CFF22_terseLabel_en-US" xlink:label="lab_dy_TelecommunicationsSpecialtyConstructionContractorCanadaMember_B1D3F695CCC2DC596E8871AFD63CFF22" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Telecommunications Specialty Construction Contractor, Canada</link:label>
    <link:label id="lab_dy_TelecommunicationsSpecialtyConstructionContractorCanadaMember_B1D3F695CCC2DC596E8871AFD63CFF22_label_en-US" xlink:label="lab_dy_TelecommunicationsSpecialtyConstructionContractorCanadaMember_B1D3F695CCC2DC596E8871AFD63CFF22" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Telecommunications Specialty Construction Contractor, Canada [Member]</link:label>
    <link:label id="lab_dy_TelecommunicationsSpecialtyConstructionContractorCanadaMember_B1D3F695CCC2DC596E8871AFD63CFF22_documentation_en-US" xlink:label="lab_dy_TelecommunicationsSpecialtyConstructionContractorCanadaMember_B1D3F695CCC2DC596E8871AFD63CFF22" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Telecommunications Specialty Construction Contractor, Canada [Member]</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_TelecommunicationsSpecialtyConstructionContractorCanadaMember" xlink:label="loc_dy_TelecommunicationsSpecialtyConstructionContractorCanadaMember_B1D3F695CCC2DC596E8871AFD63CFF22" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_TelecommunicationsSpecialtyConstructionContractorCanadaMember_B1D3F695CCC2DC596E8871AFD63CFF22" xlink:to="lab_dy_TelecommunicationsSpecialtyConstructionContractorCanadaMember_B1D3F695CCC2DC596E8871AFD63CFF22" xlink:type="arc" />
    <link:label id="lab_dy_WattsBrothersCableConstructionInc.Member_F47E5AF48203E07DB51871AFD63D6905_terseLabel_en-US" xlink:label="lab_dy_WattsBrothersCableConstructionInc.Member_F47E5AF48203E07DB51871AFD63D6905" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Watts Brothers</link:label>
    <link:label id="lab_dy_WattsBrothersCableConstructionInc.Member_F47E5AF48203E07DB51871AFD63D6905_label_en-US" xlink:label="lab_dy_WattsBrothersCableConstructionInc.Member_F47E5AF48203E07DB51871AFD63D6905" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Watts Brothers Cable Construction, Inc. [Member]</link:label>
    <link:label id="lab_dy_WattsBrothersCableConstructionInc.Member_F47E5AF48203E07DB51871AFD63D6905_documentation_en-US" xlink:label="lab_dy_WattsBrothersCableConstructionInc.Member_F47E5AF48203E07DB51871AFD63D6905" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Watts Brothers Cable Construction, Inc. [Member]</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_WattsBrothersCableConstructionInc.Member" xlink:label="loc_dy_WattsBrothersCableConstructionInc.Member_F47E5AF48203E07DB51871AFD63D6905" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_WattsBrothersCableConstructionInc.Member_F47E5AF48203E07DB51871AFD63D6905" xlink:to="lab_dy_WattsBrothersCableConstructionInc.Member_F47E5AF48203E07DB51871AFD63D6905" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessAcquisitionLineItems_9E727A8D84F807EECF2471AFD63DAF7C_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionLineItems_9E727A8D84F807EECF2471AFD63DAF7C" 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_9E727A8D84F807EECF2471AFD63DAF7C_label_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionLineItems_9E727A8D84F807EECF2471AFD63DAF7C" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_BusinessAcquisitionLineItems" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_9E727A8D84F807EECF2471AFD63DAF7C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_9E727A8D84F807EECF2471AFD63DAF7C" xlink:to="lab_us-gaap_BusinessAcquisitionLineItems_9E727A8D84F807EECF2471AFD63DAF7C" xlink:type="arc" />
    <link:label id="lab_us-gaap_PaymentsToAcquireBusinessesGross_46A95F11874786A4FB7A71AFD63DF06F_terseLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireBusinessesGross_46A95F11874786A4FB7A71AFD63DF06F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Acquisition payments</link:label>
    <link:label id="lab_us-gaap_PaymentsToAcquireBusinessesGross_46A95F11874786A4FB7A71AFD63DF06F_label_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireBusinessesGross_46A95F11874786A4FB7A71AFD63DF06F" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PaymentsToAcquireBusinessesGross" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesGross_46A95F11874786A4FB7A71AFD63DF06F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsToAcquireBusinessesGross_46A95F11874786A4FB7A71AFD63DF06F" xlink:to="lab_us-gaap_PaymentsToAcquireBusinessesGross_46A95F11874786A4FB7A71AFD63DF06F" xlink:type="arc" />
    <link:label id="lab_dy_BusinessAcquisitionCostOfAcquiredEntityCashPaidForWorkingCapital_2E9C5EF256B067E3DFE671AFD63DCF6B_terseLabel_en-US" xlink:label="lab_dy_BusinessAcquisitionCostOfAcquiredEntityCashPaidForWorkingCapital_2E9C5EF256B067E3DFE671AFD63DCF6B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Business Acquisition, Cost of Acquired Entity, Cash Paid For Working Capital</link:label>
    <link:label id="lab_dy_BusinessAcquisitionCostOfAcquiredEntityCashPaidForWorkingCapital_2E9C5EF256B067E3DFE671AFD63DCF6B_label_en-US" xlink:label="lab_dy_BusinessAcquisitionCostOfAcquiredEntityCashPaidForWorkingCapital_2E9C5EF256B067E3DFE671AFD63DCF6B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Acquisition, Cost of Acquired Entity, Cash Paid For Working Capital</link:label>
    <link:label id="lab_dy_BusinessAcquisitionCostOfAcquiredEntityCashPaidForWorkingCapital_2E9C5EF256B067E3DFE671AFD63DCF6B_documentation_en-US" xlink:label="lab_dy_BusinessAcquisitionCostOfAcquiredEntityCashPaidForWorkingCapital_2E9C5EF256B067E3DFE671AFD63DCF6B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Business Acquisition, Cost of Acquired Entity, Cash Paid For Working Capital</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_BusinessAcquisitionCostOfAcquiredEntityCashPaidForWorkingCapital" xlink:label="loc_dy_BusinessAcquisitionCostOfAcquiredEntityCashPaidForWorkingCapital_2E9C5EF256B067E3DFE671AFD63DCF6B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_BusinessAcquisitionCostOfAcquiredEntityCashPaidForWorkingCapital_2E9C5EF256B067E3DFE671AFD63DCF6B" xlink:to="lab_dy_BusinessAcquisitionCostOfAcquiredEntityCashPaidForWorkingCapital_2E9C5EF256B067E3DFE671AFD63DCF6B" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsGross_E98CA0170190272C232A71AFD63D5938_verboseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsGross_E98CA0170190272C232A71AFD63D5938" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Gross</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsGross" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_E98CA0170190272C232A71AFD63D5938" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsGross_E98CA0170190272C232A71AFD63D5938" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsGross_E98CA0170190272C232A71AFD63D5938" xlink:type="arc" />
    <link:label id="lab_us-gaap_NumberOfBusinessesAcquired_D251E5346870C82C057771BBBEF86FFE_terseLabel_en-US" xlink:label="lab_us-gaap_NumberOfBusinessesAcquired_D251E5346870C82C057771BBBEF86FFE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of businesses acquired</link:label>
    <link:label id="lab_us-gaap_NumberOfBusinessesAcquired_D251E5346870C82C057771BBBEF86FFE_label_en-US" xlink:label="lab_us-gaap_NumberOfBusinessesAcquired_D251E5346870C82C057771BBBEF86FFE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number of Businesses Acquired</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NumberOfBusinessesAcquired" xlink:label="loc_us-gaap_NumberOfBusinessesAcquired_D251E5346870C82C057771BBBEF86FFE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NumberOfBusinessesAcquired_D251E5346870C82C057771BBBEF86FFE" xlink:to="lab_us-gaap_NumberOfBusinessesAcquired_D251E5346870C82C057771BBBEF86FFE" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedCustomerRelationshipsGross_DFCF65FECAF7E7CBD30B71AFD63DA65E_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedCustomerRelationshipsGross_DFCF65FECAF7E7CBD30B71AFD63DA65E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Finite-Lived Customer Relationships, Gross</link:label>
    <link:label id="lab_us-gaap_FiniteLivedCustomerRelationshipsGross_DFCF65FECAF7E7CBD30B71AFD63DA65E_label_en-US" xlink:label="lab_us-gaap_FiniteLivedCustomerRelationshipsGross_DFCF65FECAF7E7CBD30B71AFD63DA65E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Customer Relationships, Gross</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FiniteLivedCustomerRelationshipsGross" xlink:label="loc_us-gaap_FiniteLivedCustomerRelationshipsGross_DFCF65FECAF7E7CBD30B71AFD63DA65E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedCustomerRelationshipsGross_DFCF65FECAF7E7CBD30B71AFD63DA65E" xlink:to="lab_us-gaap_FiniteLivedCustomerRelationshipsGross_DFCF65FECAF7E7CBD30B71AFD63DA65E" xlink:type="arc" />
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentGross_040DB7BC8B67CF9CBA4F71AFD63D34FA_verboseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentGross_040DB7BC8B67CF9CBA4F71AFD63D34FA" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Property, Plant and Equipment, Gross</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PropertyPlantAndEquipmentGross" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_040DB7BC8B67CF9CBA4F71AFD63D34FA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentGross_040DB7BC8B67CF9CBA4F71AFD63D34FA" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentGross_040DB7BC8B67CF9CBA4F71AFD63D34FA" xlink:type="arc" />
    <link:label id="lab_us-gaap_GainLossOnSaleOfPropertyPlantEquipment_9ED5D3EC57BD1AE7BFCE700C4676EE08_terseLabel_en-US" xlink:label="lab_us-gaap_GainLossOnSaleOfPropertyPlantEquipment_9ED5D3EC57BD1AE7BFCE700C4676EE08" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Gain on sale of fixed assets</link:label>
    <link:label id="lab_us-gaap_GainLossOnSaleOfPropertyPlantEquipment_9ED5D3EC57BD1AE7BFCE700C4676EE08_label_en-US" xlink:label="lab_us-gaap_GainLossOnSaleOfPropertyPlantEquipment_9ED5D3EC57BD1AE7BFCE700C4676EE08" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_GainLossOnSaleOfPropertyPlantEquipment" xlink:label="loc_us-gaap_GainLossOnSaleOfPropertyPlantEquipment_9ED5D3EC57BD1AE7BFCE700C4676EE08" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GainLossOnSaleOfPropertyPlantEquipment_9ED5D3EC57BD1AE7BFCE700C4676EE08" xlink:to="lab_us-gaap_GainLossOnSaleOfPropertyPlantEquipment_9ED5D3EC57BD1AE7BFCE700C4676EE08" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherIncome_827F8F25DBE0118BA5C7700C46764FB6_terseLabel_en-US" xlink:label="lab_us-gaap_OtherIncome_827F8F25DBE0118BA5C7700C46764FB6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Miscellaneous income, net</link:label>
    <link:label id="lab_us-gaap_OtherIncome_827F8F25DBE0118BA5C7700C46764FB6_label_en-US" xlink:label="lab_us-gaap_OtherIncome_827F8F25DBE0118BA5C7700C46764FB6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Income</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherIncome" xlink:label="loc_us-gaap_OtherIncome_827F8F25DBE0118BA5C7700C46764FB6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherIncome_827F8F25DBE0118BA5C7700C46764FB6" xlink:to="lab_us-gaap_OtherIncome_827F8F25DBE0118BA5C7700C46764FB6" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherNonoperatingIncomeExpense_99835C4AE2AA7DAFBFB5700C46767C59_totalLabel_en-US" xlink:label="lab_us-gaap_OtherNonoperatingIncomeExpense_99835C4AE2AA7DAFBFB5700C46767C59" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total other income, net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherNonoperatingIncomeExpense" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_99835C4AE2AA7DAFBFB5700C46767C59" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherNonoperatingIncomeExpense_99835C4AE2AA7DAFBFB5700C46767C59" xlink:to="lab_us-gaap_OtherNonoperatingIncomeExpense_99835C4AE2AA7DAFBFB5700C46767C59" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_657220B88C8762CA1A797846E039E7E2_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_657220B88C8762CA1A797846E039E7E2" 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_NetCashProvidedByUsedInOperatingActivitiesAbstract_657220B88C8762CA1A797846E039E7E2_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_657220B88C8762CA1A797846E039E7E2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Operating Activities [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_657220B88C8762CA1A797846E039E7E2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_657220B88C8762CA1A797846E039E7E2" xlink:to="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_657220B88C8762CA1A797846E039E7E2" xlink:type="arc" />
    <link:label id="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_A1188FD6A9F49780E6887846E03AE554_terseLabel_en-US" xlink:label="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_A1188FD6A9F49780E6887846E03AE554" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Adjustments to reconcile net income to net cash provided by operating activities, net of acquisitions:</link:label>
    <link:label id="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_A1188FD6A9F49780E6887846E03AE554_label_en-US" xlink:label="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_A1188FD6A9F49780E6887846E03AE554" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_A1188FD6A9F49780E6887846E03AE554" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_A1188FD6A9F49780E6887846E03AE554" xlink:to="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_A1188FD6A9F49780E6887846E03AE554" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProvisionForDoubtfulAccounts_E030D3CCEA7BA174D74E7846E03AB5E4_terseLabel_en-US" xlink:label="lab_us-gaap_ProvisionForDoubtfulAccounts_E030D3CCEA7BA174D74E7846E03AB5E4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Bad debt expense, net</link:label>
    <link:label id="lab_us-gaap_ProvisionForDoubtfulAccounts_E030D3CCEA7BA174D74E7846E03AB5E4_label_en-US" xlink:label="lab_us-gaap_ProvisionForDoubtfulAccounts_E030D3CCEA7BA174D74E7846E03AB5E4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Provision for Doubtful Accounts</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ProvisionForDoubtfulAccounts" xlink:label="loc_us-gaap_ProvisionForDoubtfulAccounts_E030D3CCEA7BA174D74E7846E03AB5E4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProvisionForDoubtfulAccounts_E030D3CCEA7BA174D74E7846E03AB5E4" xlink:to="lab_us-gaap_ProvisionForDoubtfulAccounts_E030D3CCEA7BA174D74E7846E03AB5E4" xlink:type="arc" />
    <link:label id="lab_us-gaap_GainLossOnSaleOfPropertyPlantEquipment_C97D0CD0CEAF85D762A97846E03A34FB_negatedLabel_en-US" xlink:label="lab_us-gaap_GainLossOnSaleOfPropertyPlantEquipment_C97D0CD0CEAF85D762A97846E03A34FB" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Gain on sale of fixed assets</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_GainLossOnSaleOfPropertyPlantEquipment" xlink:label="loc_us-gaap_GainLossOnSaleOfPropertyPlantEquipment_C97D0CD0CEAF85D762A97846E03A34FB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GainLossOnSaleOfPropertyPlantEquipment_C97D0CD0CEAF85D762A97846E03A34FB" xlink:to="lab_us-gaap_GainLossOnSaleOfPropertyPlantEquipment_C97D0CD0CEAF85D762A97846E03A34FB" xlink:type="arc" />
    <link:label id="lab_us-gaap_DeferredIncomeTaxExpenseBenefit_513DEE0A144431EB5A127846E03AB73D_verboseLabel_en-US" xlink:label="lab_us-gaap_DeferredIncomeTaxExpenseBenefit_513DEE0A144431EB5A127846E03AB73D" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Deferred income tax provision (benefit)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_513DEE0A144431EB5A127846E03AB73D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_513DEE0A144431EB5A127846E03AB73D" xlink:to="lab_us-gaap_DeferredIncomeTaxExpenseBenefit_513DEE0A144431EB5A127846E03AB73D" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensation_1D9BA019C8D070AEAD817846E03A79F8_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensation_1D9BA019C8D070AEAD817846E03A79F8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Stock-based compensation</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensation" xlink:label="loc_us-gaap_ShareBasedCompensation_1D9BA019C8D070AEAD817846E03A79F8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensation_1D9BA019C8D070AEAD817846E03A79F8" xlink:to="lab_us-gaap_ShareBasedCompensation_1D9BA019C8D070AEAD817846E03A79F8" xlink:type="arc" />
    <link:label id="lab_us-gaap_AmortizationOfDebtDiscountPremium_58CA32DCC05484F802397846E03AEB16_terseLabel_en-US" xlink:label="lab_us-gaap_AmortizationOfDebtDiscountPremium_58CA32DCC05484F802397846E03AEB16" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amortization of premium on long-term debt</link:label>
    <link:label id="lab_us-gaap_AmortizationOfDebtDiscountPremium_58CA32DCC05484F802397846E03AEB16_label_en-US" xlink:label="lab_us-gaap_AmortizationOfDebtDiscountPremium_58CA32DCC05484F802397846E03AEB16" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Amortization of Debt Discount (Premium)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AmortizationOfDebtDiscountPremium" xlink:label="loc_us-gaap_AmortizationOfDebtDiscountPremium_58CA32DCC05484F802397846E03AEB16" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AmortizationOfDebtDiscountPremium_58CA32DCC05484F802397846E03AEB16" xlink:to="lab_us-gaap_AmortizationOfDebtDiscountPremium_58CA32DCC05484F802397846E03AEB16" xlink:type="arc" />
    <link:label id="lab_us-gaap_AmortizationOfFinancingCosts_91E4DDF494341F548CA07846E03A79E5_terseLabel_en-US" xlink:label="lab_us-gaap_AmortizationOfFinancingCosts_91E4DDF494341F548CA07846E03A79E5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amortization of debt issuance costs and other</link:label>
    <link:label id="lab_us-gaap_AmortizationOfFinancingCosts_91E4DDF494341F548CA07846E03A79E5_label_en-US" xlink:label="lab_us-gaap_AmortizationOfFinancingCosts_91E4DDF494341F548CA07846E03A79E5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Amortization of Financing Costs</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AmortizationOfFinancingCosts" xlink:label="loc_us-gaap_AmortizationOfFinancingCosts_91E4DDF494341F548CA07846E03A79E5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AmortizationOfFinancingCosts_91E4DDF494341F548CA07846E03A79E5" xlink:to="lab_us-gaap_AmortizationOfFinancingCosts_91E4DDF494341F548CA07846E03A79E5" xlink:type="arc" />
    <link:label id="lab_us-gaap_ExcessTaxBenefitFromShareBasedCompensationOperatingActivities_C5BA3864FDBEB5CDD2077846E03A6CD5_negatedLabel_en-US" xlink:label="lab_us-gaap_ExcessTaxBenefitFromShareBasedCompensationOperatingActivities_C5BA3864FDBEB5CDD2077846E03A6CD5" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Excess tax benefit from share-based awards</link:label>
    <link:label id="lab_us-gaap_ExcessTaxBenefitFromShareBasedCompensationOperatingActivities_C5BA3864FDBEB5CDD2077846E03A6CD5_label_en-US" xlink:label="lab_us-gaap_ExcessTaxBenefitFromShareBasedCompensationOperatingActivities_C5BA3864FDBEB5CDD2077846E03A6CD5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Excess Tax Benefit from Share-based Compensation, Operating Activities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ExcessTaxBenefitFromShareBasedCompensationOperatingActivities" xlink:label="loc_us-gaap_ExcessTaxBenefitFromShareBasedCompensationOperatingActivities_C5BA3864FDBEB5CDD2077846E03A6CD5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ExcessTaxBenefitFromShareBasedCompensationOperatingActivities_C5BA3864FDBEB5CDD2077846E03A6CD5" xlink:to="lab_us-gaap_ExcessTaxBenefitFromShareBasedCompensationOperatingActivities_C5BA3864FDBEB5CDD2077846E03A6CD5" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_2D6EE9882FE07A9750687846E03B9299_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_2D6EE9882FE07A9750687846E03B9299" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Change in operating assets and liabilities:</link:label>
    <link:label id="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_2D6EE9882FE07A9750687846E03B9299_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_2D6EE9882FE07A9750687846E03B9299" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:label="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_2D6EE9882FE07A9750687846E03B9299" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_2D6EE9882FE07A9750687846E03B9299" xlink:to="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_2D6EE9882FE07A9750687846E03B9299" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncreaseDecreaseInAccountsReceivable_2D6F464271F05F9AFB5D7846E03B9E15_negatedLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccountsReceivable_2D6F464271F05F9AFB5D7846E03B9E15" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Accounts receivable, net</link:label>
    <link:label id="lab_us-gaap_IncreaseDecreaseInAccountsReceivable_2D6F464271F05F9AFB5D7846E03B9E15_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccountsReceivable_2D6F464271F05F9AFB5D7846E03B9E15" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_2D6F464271F05F9AFB5D7846E03B9E15" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_2D6F464271F05F9AFB5D7846E03B9E15" xlink:to="lab_us-gaap_IncreaseDecreaseInAccountsReceivable_2D6F464271F05F9AFB5D7846E03B9E15" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncreaseDecreaseInUnbilledReceivables_9423B6B5F6E53D6BD0E37846E03BFFDA_negatedLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInUnbilledReceivables_9423B6B5F6E53D6BD0E37846E03BFFDA" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Costs and estimated earnings in excess of billings, net</link:label>
    <link:label id="lab_us-gaap_IncreaseDecreaseInUnbilledReceivables_9423B6B5F6E53D6BD0E37846E03BFFDA_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInUnbilledReceivables_9423B6B5F6E53D6BD0E37846E03BFFDA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Unbilled Receivables</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncreaseDecreaseInUnbilledReceivables" xlink:label="loc_us-gaap_IncreaseDecreaseInUnbilledReceivables_9423B6B5F6E53D6BD0E37846E03BFFDA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInUnbilledReceivables_9423B6B5F6E53D6BD0E37846E03BFFDA" xlink:to="lab_us-gaap_IncreaseDecreaseInUnbilledReceivables_9423B6B5F6E53D6BD0E37846E03BFFDA" xlink:type="arc" />
    <link:label id="lab_dy_IncreaseDecreaseInOtherCurrentAssetsAndInventory_F74D45F6AFEA2AE34A0C7846E03B81CB_negatedLabel_en-US" xlink:label="lab_dy_IncreaseDecreaseInOtherCurrentAssetsAndInventory_F74D45F6AFEA2AE34A0C7846E03B81CB" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Other current assets and inventory</link:label>
    <link:label id="lab_dy_IncreaseDecreaseInOtherCurrentAssetsAndInventory_F74D45F6AFEA2AE34A0C7846E03B81CB_label_en-US" xlink:label="lab_dy_IncreaseDecreaseInOtherCurrentAssetsAndInventory_F74D45F6AFEA2AE34A0C7846E03B81CB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase Decrease In Other Current Assets And Inventory</link:label>
    <link:label id="lab_dy_IncreaseDecreaseInOtherCurrentAssetsAndInventory_F74D45F6AFEA2AE34A0C7846E03B81CB_documentation_en-US" xlink:label="lab_dy_IncreaseDecreaseInOtherCurrentAssetsAndInventory_F74D45F6AFEA2AE34A0C7846E03B81CB" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The increase (decrease) during the reporting period in other current assets and inventory held by the reporting entity.</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_IncreaseDecreaseInOtherCurrentAssetsAndInventory" xlink:label="loc_dy_IncreaseDecreaseInOtherCurrentAssetsAndInventory_F74D45F6AFEA2AE34A0C7846E03B81CB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_IncreaseDecreaseInOtherCurrentAssetsAndInventory_F74D45F6AFEA2AE34A0C7846E03B81CB" xlink:to="lab_dy_IncreaseDecreaseInOtherCurrentAssetsAndInventory_F74D45F6AFEA2AE34A0C7846E03B81CB" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncreaseDecreaseInOtherNoncurrentAssets_45CA1B0345699521A79E7846E03B4389_negatedLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOtherNoncurrentAssets_45CA1B0345699521A79E7846E03B4389" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Other assets</link:label>
    <link:label id="lab_us-gaap_IncreaseDecreaseInOtherNoncurrentAssets_45CA1B0345699521A79E7846E03B4389_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOtherNoncurrentAssets_45CA1B0345699521A79E7846E03B4389" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Other Noncurrent Assets</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncreaseDecreaseInOtherNoncurrentAssets" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherNoncurrentAssets_45CA1B0345699521A79E7846E03B4389" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInOtherNoncurrentAssets_45CA1B0345699521A79E7846E03B4389" xlink:to="lab_us-gaap_IncreaseDecreaseInOtherNoncurrentAssets_45CA1B0345699521A79E7846E03B4389" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncreaseDecreaseInIncomeTaxesReceivable_C69BFF8669D09528E81C7846E03B311B_negatedLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInIncomeTaxesReceivable_C69BFF8669D09528E81C7846E03B311B" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Income taxes receivable/payable</link:label>
    <link:label id="lab_us-gaap_IncreaseDecreaseInIncomeTaxesReceivable_C69BFF8669D09528E81C7846E03B311B_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInIncomeTaxesReceivable_C69BFF8669D09528E81C7846E03B311B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Income Taxes Receivable</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncreaseDecreaseInIncomeTaxesReceivable" xlink:label="loc_us-gaap_IncreaseDecreaseInIncomeTaxesReceivable_C69BFF8669D09528E81C7846E03B311B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInIncomeTaxesReceivable_C69BFF8669D09528E81C7846E03B311B" xlink:to="lab_us-gaap_IncreaseDecreaseInIncomeTaxesReceivable_C69BFF8669D09528E81C7846E03B311B" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncreaseDecreaseInAccountsPayable_181ECD434B93572A5DDF7846E03BCACB_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccountsPayable_181ECD434B93572A5DDF7846E03BCACB" 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_181ECD434B93572A5DDF7846E03BCACB_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccountsPayable_181ECD434B93572A5DDF7846E03BCACB" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayable" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayable_181ECD434B93572A5DDF7846E03BCACB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInAccountsPayable_181ECD434B93572A5DDF7846E03BCACB" xlink:to="lab_us-gaap_IncreaseDecreaseInAccountsPayable_181ECD434B93572A5DDF7846E03BCACB" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncreaseDecreaseInAccruedLiabilities_01115EF96F60D56853247846E03C2A51_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccruedLiabilities_01115EF96F60D56853247846E03C2A51" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accrued liabilities, insurance claims, and other liabilities</link:label>
    <link:label id="lab_us-gaap_IncreaseDecreaseInAccruedLiabilities_01115EF96F60D56853247846E03C2A51_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccruedLiabilities_01115EF96F60D56853247846E03C2A51" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Accrued Liabilities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncreaseDecreaseInAccruedLiabilities" xlink:label="loc_us-gaap_IncreaseDecreaseInAccruedLiabilities_01115EF96F60D56853247846E03C2A51" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInAccruedLiabilities_01115EF96F60D56853247846E03C2A51" xlink:to="lab_us-gaap_IncreaseDecreaseInAccruedLiabilities_01115EF96F60D56853247846E03C2A51" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_A0EEDA092D9A6CD8F2D97846E03CC335_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_A0EEDA092D9A6CD8F2D97846E03CC335" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_A0EEDA092D9A6CD8F2D97846E03CC335" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_A0EEDA092D9A6CD8F2D97846E03CC335" xlink:to="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_A0EEDA092D9A6CD8F2D97846E03CC335" xlink:type="arc" />
    <link:label id="lab_dy_RestrictedStockRepurchasedForTaxWithholdings_99F38D010A928554B46C7846E03D6451_terseLabel_en-US" xlink:label="lab_dy_RestrictedStockRepurchasedForTaxWithholdings_99F38D010A928554B46C7846E03D6451" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Restricted stock tax withholdings</link:label>
    <link:label id="lab_dy_RestrictedStockRepurchasedForTaxWithholdings_99F38D010A928554B46C7846E03D6451_label_en-US" xlink:label="lab_dy_RestrictedStockRepurchasedForTaxWithholdings_99F38D010A928554B46C7846E03D6451" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restricted stock repurchased for tax withholdings</link:label>
    <link:label id="lab_dy_RestrictedStockRepurchasedForTaxWithholdings_99F38D010A928554B46C7846E03D6451_documentation_en-US" xlink:label="lab_dy_RestrictedStockRepurchasedForTaxWithholdings_99F38D010A928554B46C7846E03D6451" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Restricted stock repurchased for tax withholdings.</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_RestrictedStockRepurchasedForTaxWithholdings" xlink:label="loc_dy_RestrictedStockRepurchasedForTaxWithholdings_99F38D010A928554B46C7846E03D6451" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_RestrictedStockRepurchasedForTaxWithholdings_99F38D010A928554B46C7846E03D6451" xlink:to="lab_dy_RestrictedStockRepurchasedForTaxWithholdings_99F38D010A928554B46C7846E03D6451" xlink:type="arc" />
    <link:label id="lab_us-gaap_SupplementalCashFlowInformationAbstract_59A4F46C3A223675A2BC7846E03E0A0B_terseLabel_en-US" xlink:label="lab_us-gaap_SupplementalCashFlowInformationAbstract_59A4F46C3A223675A2BC7846E03E0A0B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">SUPPLEMENTAL DISCLOSURE OF OTHER CASH FLOW ACTIVITIES AND NON-CASH INVESTING AND FINANCING ACTIVITIES:</link:label>
    <link:label id="lab_us-gaap_SupplementalCashFlowInformationAbstract_59A4F46C3A223675A2BC7846E03E0A0B_label_en-US" xlink:label="lab_us-gaap_SupplementalCashFlowInformationAbstract_59A4F46C3A223675A2BC7846E03E0A0B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Supplemental Cash Flow Information [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SupplementalCashFlowInformationAbstract" xlink:label="loc_us-gaap_SupplementalCashFlowInformationAbstract_59A4F46C3A223675A2BC7846E03E0A0B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SupplementalCashFlowInformationAbstract_59A4F46C3A223675A2BC7846E03E0A0B" xlink:to="lab_us-gaap_SupplementalCashFlowInformationAbstract_59A4F46C3A223675A2BC7846E03E0A0B" xlink:type="arc" />
    <link:label id="lab_dy_CashPaidDuringPeriodForAbstract_D2FCD36D43FA5953CA6F7846E03EE83C_verboseLabel_en-US" xlink:label="lab_dy_CashPaidDuringPeriodForAbstract_D2FCD36D43FA5953CA6F7846E03EE83C" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Cash paid during the period for:</link:label>
    <link:label id="lab_dy_CashPaidDuringPeriodForAbstract_D2FCD36D43FA5953CA6F7846E03EE83C_label_en-US" xlink:label="lab_dy_CashPaidDuringPeriodForAbstract_D2FCD36D43FA5953CA6F7846E03EE83C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash Paid During the Period For [Abstract]</link:label>
    <link:label id="lab_dy_CashPaidDuringPeriodForAbstract_D2FCD36D43FA5953CA6F7846E03EE83C_documentation_en-US" xlink:label="lab_dy_CashPaidDuringPeriodForAbstract_D2FCD36D43FA5953CA6F7846E03EE83C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US" />
    <link:loc xlink:href="dy-20150425.xsd#dy_CashPaidDuringPeriodForAbstract" xlink:label="loc_dy_CashPaidDuringPeriodForAbstract_D2FCD36D43FA5953CA6F7846E03EE83C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_CashPaidDuringPeriodForAbstract_D2FCD36D43FA5953CA6F7846E03EE83C" xlink:to="lab_dy_CashPaidDuringPeriodForAbstract_D2FCD36D43FA5953CA6F7846E03EE83C" xlink:type="arc" />
    <link:label id="lab_us-gaap_InterestPaid_19490C6E0F4788BECC3D7846E03E6D80_terseLabel_en-US" xlink:label="lab_us-gaap_InterestPaid_19490C6E0F4788BECC3D7846E03E6D80" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Interest</link:label>
    <link:label id="lab_us-gaap_InterestPaid_19490C6E0F4788BECC3D7846E03E6D80_label_en-US" xlink:label="lab_us-gaap_InterestPaid_19490C6E0F4788BECC3D7846E03E6D80" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interest Paid</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_InterestPaid" xlink:label="loc_us-gaap_InterestPaid_19490C6E0F4788BECC3D7846E03E6D80" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InterestPaid_19490C6E0F4788BECC3D7846E03E6D80" xlink:to="lab_us-gaap_InterestPaid_19490C6E0F4788BECC3D7846E03E6D80" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncomeTaxesPaid_A3BF9F5A87FE5096203F7846E03FA157_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxesPaid_A3BF9F5A87FE5096203F7846E03FA157" 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_IncomeTaxesPaid_A3BF9F5A87FE5096203F7846E03FA157_label_en-US" xlink:label="lab_us-gaap_IncomeTaxesPaid_A3BF9F5A87FE5096203F7846E03FA157" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Taxes Paid</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncomeTaxesPaid" xlink:label="loc_us-gaap_IncomeTaxesPaid_A3BF9F5A87FE5096203F7846E03FA157" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeTaxesPaid_A3BF9F5A87FE5096203F7846E03FA157" xlink:to="lab_us-gaap_IncomeTaxesPaid_A3BF9F5A87FE5096203F7846E03FA157" xlink:type="arc" />
    <link:label id="lab_us-gaap_CapitalExpendituresIncurredButNotYetPaid_D035DC2057133777F0607846E03FED0C_terseLabel_en-US" xlink:label="lab_us-gaap_CapitalExpendituresIncurredButNotYetPaid_D035DC2057133777F0607846E03FED0C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Purchases of capital assets included in accounts payable or other accrued liabilities at period end</link:label>
    <link:label id="lab_us-gaap_CapitalExpendituresIncurredButNotYetPaid_D035DC2057133777F0607846E03FED0C_label_en-US" xlink:label="lab_us-gaap_CapitalExpendituresIncurredButNotYetPaid_D035DC2057133777F0607846E03FED0C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Capital Expenditures Incurred but Not yet Paid</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CapitalExpendituresIncurredButNotYetPaid" xlink:label="loc_us-gaap_CapitalExpendituresIncurredButNotYetPaid_D035DC2057133777F0607846E03FED0C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CapitalExpendituresIncurredButNotYetPaid_D035DC2057133777F0607846E03FED0C" xlink:to="lab_us-gaap_CapitalExpendituresIncurredButNotYetPaid_D035DC2057133777F0607846E03FED0C" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract_F3B93EE2621B629295FC690C621C11C6_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract_F3B93EE2621B629295FC690C621C11C6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract_F3B93EE2621B629295FC690C621C11C6_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract_F3B93EE2621B629295FC690C621C11C6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract_F3B93EE2621B629295FC690C621C11C6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract_F3B93EE2621B629295FC690C621C11C6" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract_F3B93EE2621B629295FC690C621C11C6" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_2B0971FB036C7DC4713F690C621DF61E_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_2B0971FB036C7DC4713F690C621DF61E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Three months ending July 25, 2015</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_2B0971FB036C7DC4713F690C621DF61E_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_2B0971FB036C7DC4713F690C621DF61E" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_2B0971FB036C7DC4713F690C621DF61E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_2B0971FB036C7DC4713F690C621DF61E" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_2B0971FB036C7DC4713F690C621DF61E" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_E68ACAE091F0648F0EA9690C621DB2A7_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_E68ACAE091F0648F0EA9690C621DB2A7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2016</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_E68ACAE091F0648F0EA9690C621DB2A7_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_E68ACAE091F0648F0EA9690C621DB2A7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_E68ACAE091F0648F0EA9690C621DB2A7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_E68ACAE091F0648F0EA9690C621DB2A7" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_E68ACAE091F0648F0EA9690C621DB2A7" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_6D0B369CCBD9A68ACB03690C621DF4A6_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_6D0B369CCBD9A68ACB03690C621DF4A6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2017</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_6D0B369CCBD9A68ACB03690C621DF4A6_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_6D0B369CCBD9A68ACB03690C621DF4A6" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_6D0B369CCBD9A68ACB03690C621DF4A6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_6D0B369CCBD9A68ACB03690C621DF4A6" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_6D0B369CCBD9A68ACB03690C621DF4A6" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_2A6513AD9B9DB4694BC9690C621D6C51_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_2A6513AD9B9DB4694BC9690C621D6C51" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2018</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_2A6513AD9B9DB4694BC9690C621D6C51_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_2A6513AD9B9DB4694BC9690C621D6C51" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_2A6513AD9B9DB4694BC9690C621D6C51" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_2A6513AD9B9DB4694BC9690C621D6C51" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_2A6513AD9B9DB4694BC9690C621D6C51" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_70A2537F30A2A93B2131690C621D21AF_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_70A2537F30A2A93B2131690C621D21AF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2019</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_70A2537F30A2A93B2131690C621D21AF_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_70A2537F30A2A93B2131690C621D21AF" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_70A2537F30A2A93B2131690C621D21AF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_70A2537F30A2A93B2131690C621D21AF" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_70A2537F30A2A93B2131690C621D21AF" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_EA5E32C7EB69286E6C45690C621D541F_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_EA5E32C7EB69286E6C45690C621D541F" 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_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_EA5E32C7EB69286E6C45690C621D541F_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_EA5E32C7EB69286E6C45690C621D541F" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_EA5E32C7EB69286E6C45690C621D541F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_EA5E32C7EB69286E6C45690C621D541F" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_EA5E32C7EB69286E6C45690C621D541F" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_5C3827DF90DA75356DAF690C621DDB13_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_5C3827DF90DA75356DAF690C621DDB13" 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_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_5C3827DF90DA75356DAF690C621DDB13_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_5C3827DF90DA75356DAF690C621DDB13" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Amortization Expense, after Year Five</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_5C3827DF90DA75356DAF690C621DDB13" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_5C3827DF90DA75356DAF690C621DDB13" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_5C3827DF90DA75356DAF690C621DDB13" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsNet_54BCBA76A473F3698271690C621D3D95_totalLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsNet_54BCBA76A473F3698271690C621D3D95" 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_FiniteLivedIntangibleAssetsNet_54BCBA76A473F3698271690C621D3D95_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsNet_54BCBA76A473F3698271690C621D3D95" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsNet" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_54BCBA76A473F3698271690C621D3D95" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_54BCBA76A473F3698271690C621D3D95" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsNet_54BCBA76A473F3698271690C621D3D95" xlink:type="arc" />
    <link:label id="lab_us-gaap_InterestAndOtherIncomeTableTextBlock_A7B0E3305A2E708D308C700C46476894_terseLabel_en-US" xlink:label="lab_us-gaap_InterestAndOtherIncomeTableTextBlock_A7B0E3305A2E708D308C700C46476894" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Other Income, Net</link:label>
    <link:label id="lab_us-gaap_InterestAndOtherIncomeTableTextBlock_A7B0E3305A2E708D308C700C46476894_label_en-US" xlink:label="lab_us-gaap_InterestAndOtherIncomeTableTextBlock_A7B0E3305A2E708D308C700C46476894" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interest and Other Income [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_InterestAndOtherIncomeTableTextBlock" xlink:label="loc_us-gaap_InterestAndOtherIncomeTableTextBlock_A7B0E3305A2E708D308C700C46476894" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InterestAndOtherIncomeTableTextBlock_A7B0E3305A2E708D308C700C46476894" xlink:to="lab_us-gaap_InterestAndOtherIncomeTableTextBlock_A7B0E3305A2E708D308C700C46476894" xlink:type="arc" />
    <link:label id="lab_us-gaap_LossContingenciesTable_4F4D6469348DF380A17176E45F1DC745_terseLabel_en-US" xlink:label="lab_us-gaap_LossContingenciesTable_4F4D6469348DF380A17176E45F1DC745" 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_4F4D6469348DF380A17176E45F1DC745_label_en-US" xlink:label="lab_us-gaap_LossContingenciesTable_4F4D6469348DF380A17176E45F1DC745" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LossContingenciesTable" xlink:label="loc_us-gaap_LossContingenciesTable_4F4D6469348DF380A17176E45F1DC745" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LossContingenciesTable_4F4D6469348DF380A17176E45F1DC745" xlink:to="lab_us-gaap_LossContingenciesTable_4F4D6469348DF380A17176E45F1DC745" xlink:type="arc" />
    <link:label id="lab_us-gaap_GuaranteeObligationsByNatureAxis_ADDA891B5B4F1B54773676E45F1D0EB2_terseLabel_en-US" xlink:label="lab_us-gaap_GuaranteeObligationsByNatureAxis_ADDA891B5B4F1B54773676E45F1D0EB2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Guarantor Obligations, Nature [Axis]</link:label>
    <link:label id="lab_us-gaap_GuaranteeObligationsByNatureAxis_ADDA891B5B4F1B54773676E45F1D0EB2_label_en-US" xlink:label="lab_us-gaap_GuaranteeObligationsByNatureAxis_ADDA891B5B4F1B54773676E45F1D0EB2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Guarantor Obligations, Nature [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_GuaranteeObligationsByNatureAxis" xlink:label="loc_us-gaap_GuaranteeObligationsByNatureAxis_ADDA891B5B4F1B54773676E45F1D0EB2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GuaranteeObligationsByNatureAxis_ADDA891B5B4F1B54773676E45F1D0EB2" xlink:to="lab_us-gaap_GuaranteeObligationsByNatureAxis_ADDA891B5B4F1B54773676E45F1D0EB2" xlink:type="arc" />
    <link:label id="lab_us-gaap_GuaranteeObligationsNatureDomain_EBA829546E46C408B43776E45F1D79E4_terseLabel_en-US" xlink:label="lab_us-gaap_GuaranteeObligationsNatureDomain_EBA829546E46C408B43776E45F1D79E4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Guarantor Obligations, Nature [Domain]</link:label>
    <link:label id="lab_us-gaap_GuaranteeObligationsNatureDomain_EBA829546E46C408B43776E45F1D79E4_label_en-US" xlink:label="lab_us-gaap_GuaranteeObligationsNatureDomain_EBA829546E46C408B43776E45F1D79E4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Guarantor Obligations, Nature [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_GuaranteeObligationsNatureDomain" xlink:label="loc_us-gaap_GuaranteeObligationsNatureDomain_EBA829546E46C408B43776E45F1D79E4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GuaranteeObligationsNatureDomain_EBA829546E46C408B43776E45F1D79E4" xlink:to="lab_us-gaap_GuaranteeObligationsNatureDomain_EBA829546E46C408B43776E45F1D79E4" xlink:type="arc" />
    <link:label id="lab_dy_PerformanceGuaranteeAndSuretyBondMember_628B6E09871BFD2F865676E45F1D25F7_terseLabel_en-US" xlink:label="lab_dy_PerformanceGuaranteeAndSuretyBondMember_628B6E09871BFD2F865676E45F1D25F7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Performance Guarantee and Surety Bond</link:label>
    <link:label id="lab_dy_PerformanceGuaranteeAndSuretyBondMember_628B6E09871BFD2F865676E45F1D25F7_label_en-US" xlink:label="lab_dy_PerformanceGuaranteeAndSuretyBondMember_628B6E09871BFD2F865676E45F1D25F7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Performance Guarantee and Surety Bond [Member]</link:label>
    <link:label id="lab_dy_PerformanceGuaranteeAndSuretyBondMember_628B6E09871BFD2F865676E45F1D25F7_documentation_en-US" xlink:label="lab_dy_PerformanceGuaranteeAndSuretyBondMember_628B6E09871BFD2F865676E45F1D25F7" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Performance guarantee and surety bond</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_PerformanceGuaranteeAndSuretyBondMember" xlink:label="loc_dy_PerformanceGuaranteeAndSuretyBondMember_628B6E09871BFD2F865676E45F1D25F7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_PerformanceGuaranteeAndSuretyBondMember_628B6E09871BFD2F865676E45F1D25F7" xlink:to="lab_dy_PerformanceGuaranteeAndSuretyBondMember_628B6E09871BFD2F865676E45F1D25F7" xlink:type="arc" />
    <link:label id="lab_us-gaap_LongTermPurchaseCommitmentLineItems_709E72768D0B30CD010676E45F1E945A_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermPurchaseCommitmentLineItems_709E72768D0B30CD010676E45F1E945A" 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_LongTermPurchaseCommitmentLineItems_709E72768D0B30CD010676E45F1E945A_label_en-US" xlink:label="lab_us-gaap_LongTermPurchaseCommitmentLineItems_709E72768D0B30CD010676E45F1E945A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Purchase Commitment [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LongTermPurchaseCommitmentLineItems" xlink:label="loc_us-gaap_LongTermPurchaseCommitmentLineItems_709E72768D0B30CD010676E45F1E945A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentLineItems_709E72768D0B30CD010676E45F1E945A" xlink:to="lab_us-gaap_LongTermPurchaseCommitmentLineItems_709E72768D0B30CD010676E45F1E945A" xlink:type="arc" />
    <link:label id="lab_us-gaap_LossContingencyDamagesSought_F5B1466A157FA35C849F76E45F1E38F3_terseLabel_en-US" xlink:label="lab_us-gaap_LossContingencyDamagesSought_F5B1466A157FA35C849F76E45F1E38F3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loss Contingency, Damages Sought</link:label>
    <link:label id="lab_us-gaap_LossContingencyDamagesSought_F5B1466A157FA35C849F76E45F1E38F3_label_en-US" xlink:label="lab_us-gaap_LossContingencyDamagesSought_F5B1466A157FA35C849F76E45F1E38F3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loss Contingency, Damages Sought</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LossContingencyDamagesSought" xlink:label="loc_us-gaap_LossContingencyDamagesSought_F5B1466A157FA35C849F76E45F1E38F3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LossContingencyDamagesSought_F5B1466A157FA35C849F76E45F1E38F3" xlink:to="lab_us-gaap_LossContingencyDamagesSought_F5B1466A157FA35C849F76E45F1E38F3" xlink:type="arc" />
    <link:label id="lab_us-gaap_GuaranteeObligationsCurrentCarryingValue_B4BEA7C9F7DE1FD958AA76E45F1EED2F_terseLabel_en-US" xlink:label="lab_us-gaap_GuaranteeObligationsCurrentCarryingValue_B4BEA7C9F7DE1FD958AA76E45F1EED2F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Outstanding performance and other surety contract bonds</link:label>
    <link:label id="lab_us-gaap_GuaranteeObligationsCurrentCarryingValue_B4BEA7C9F7DE1FD958AA76E45F1EED2F_label_en-US" xlink:label="lab_us-gaap_GuaranteeObligationsCurrentCarryingValue_B4BEA7C9F7DE1FD958AA76E45F1EED2F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Guarantor Obligations, Current Carrying Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_GuaranteeObligationsCurrentCarryingValue" xlink:label="loc_us-gaap_GuaranteeObligationsCurrentCarryingValue_B4BEA7C9F7DE1FD958AA76E45F1EED2F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GuaranteeObligationsCurrentCarryingValue_B4BEA7C9F7DE1FD958AA76E45F1EED2F" xlink:to="lab_us-gaap_GuaranteeObligationsCurrentCarryingValue_B4BEA7C9F7DE1FD958AA76E45F1EED2F" xlink:type="arc" />
    <link:label id="lab_us-gaap_RelatedPartyTransactionsDisclosureTextBlock_994170A6C72EB2677175700C46660855_verboseLabel_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionsDisclosureTextBlock_994170A6C72EB2677175700C46660855" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Related Party Transactions</link:label>
    <link:label id="lab_us-gaap_RelatedPartyTransactionsDisclosureTextBlock_994170A6C72EB2677175700C46660855_label_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionsDisclosureTextBlock_994170A6C72EB2677175700C46660855" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Related Party Transactions Disclosure [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RelatedPartyTransactionsDisclosureTextBlock" xlink:label="loc_us-gaap_RelatedPartyTransactionsDisclosureTextBlock_994170A6C72EB2677175700C46660855" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RelatedPartyTransactionsDisclosureTextBlock_994170A6C72EB2677175700C46660855" xlink:to="lab_us-gaap_RelatedPartyTransactionsDisclosureTextBlock_994170A6C72EB2677175700C46660855" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtAndCapitalLeaseObligations_64186D2B00223290C24C791395C38ED4_totalLabel_en-US" xlink:label="lab_us-gaap_DebtAndCapitalLeaseObligations_64186D2B00223290C24C791395C38ED4" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Debt and capital lease obligations</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DebtAndCapitalLeaseObligations" xlink:label="loc_us-gaap_DebtAndCapitalLeaseObligations_64186D2B00223290C24C791395C38ED4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtAndCapitalLeaseObligations_64186D2B00223290C24C791395C38ED4" xlink:to="lab_us-gaap_DebtAndCapitalLeaseObligations_64186D2B00223290C24C791395C38ED4" xlink:type="arc" />
    <link:label id="lab_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_7862BD0AE6D23AA6E1C2791395C3FF14_negatedLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_7862BD0AE6D23AA6E1C2791395C3FF14" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Less: current portion</link:label>
    <link:label id="lab_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_7862BD0AE6D23AA6E1C2791395C3FF14_label_en-US" xlink:label="lab_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_7862BD0AE6D23AA6E1C2791395C3FF14" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_7862BD0AE6D23AA6E1C2791395C3FF14" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_7862BD0AE6D23AA6E1C2791395C3FF14" xlink:to="lab_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_7862BD0AE6D23AA6E1C2791395C3FF14" xlink:type="arc" />
    <link:label id="lab_dy_TargetSharesMember_6A7362F224D2E494C62168E5EF986215_terseLabel_en-US" xlink:label="lab_dy_TargetSharesMember_6A7362F224D2E494C62168E5EF986215" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Target Shares</link:label>
    <link:label id="lab_dy_TargetSharesMember_6A7362F224D2E494C62168E5EF986215_label_en-US" xlink:label="lab_dy_TargetSharesMember_6A7362F224D2E494C62168E5EF986215" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Target Shares [Member]</link:label>
    <link:label id="lab_dy_TargetSharesMember_6A7362F224D2E494C62168E5EF986215_documentation_en-US" xlink:label="lab_dy_TargetSharesMember_6A7362F224D2E494C62168E5EF986215" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Target Shares</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_TargetSharesMember" xlink:label="loc_dy_TargetSharesMember_6A7362F224D2E494C62168E5EF986215" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_TargetSharesMember_6A7362F224D2E494C62168E5EF986215" xlink:to="lab_dy_TargetSharesMember_6A7362F224D2E494C62168E5EF986215" xlink:type="arc" />
    <link:label id="lab_dy_SupplementalSharesMember_062071FC917942697ADC68E5EF9816A1_terseLabel_en-US" xlink:label="lab_dy_SupplementalSharesMember_062071FC917942697ADC68E5EF9816A1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Supplemental Shares</link:label>
    <link:label id="lab_dy_SupplementalSharesMember_062071FC917942697ADC68E5EF9816A1_label_en-US" xlink:label="lab_dy_SupplementalSharesMember_062071FC917942697ADC68E5EF9816A1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Supplemental Shares [Member]</link:label>
    <link:label id="lab_dy_SupplementalSharesMember_062071FC917942697ADC68E5EF9816A1_documentation_en-US" xlink:label="lab_dy_SupplementalSharesMember_062071FC917942697ADC68E5EF9816A1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Supplemental Shares</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_SupplementalSharesMember" xlink:label="loc_dy_SupplementalSharesMember_062071FC917942697ADC68E5EF9816A1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_SupplementalSharesMember_062071FC917942697ADC68E5EF9816A1" xlink:to="lab_dy_SupplementalSharesMember_062071FC917942697ADC68E5EF9816A1" xlink:type="arc" />
    <link:label id="lab_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions_75B581951225FAD21BDD68E5EF99A65D_terseLabel_en-US" xlink:label="lab_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions_75B581951225FAD21BDD68E5EF99A65D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unrecognized compensation expense related to stock options</link:label>
    <link:label id="lab_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions_75B581951225FAD21BDD68E5EF99A65D_label_en-US" xlink:label="lab_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions_75B581951225FAD21BDD68E5EF99A65D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions_75B581951225FAD21BDD68E5EF99A65D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions_75B581951225FAD21BDD68E5EF99A65D" xlink:to="lab_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions_75B581951225FAD21BDD68E5EF99A65D" xlink:type="arc" />
    <link:label id="lab_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_BD94AE13C9D1FE84B91F68E5EF99F9FE_terseLabel_en-US" xlink:label="lab_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_BD94AE13C9D1FE84B91F68E5EF99F9FE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total compensation cost not yet recognized, period for recognition</link:label>
    <link:label id="lab_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_BD94AE13C9D1FE84B91F68E5EF99F9FE_label_en-US" xlink:label="lab_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_BD94AE13C9D1FE84B91F68E5EF99F9FE" 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, Period for Recognition</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_BD94AE13C9D1FE84B91F68E5EF99F9FE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_BD94AE13C9D1FE84B91F68E5EF99F9FE" xlink:to="lab_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_BD94AE13C9D1FE84B91F68E5EF99F9FE" xlink:type="arc" />
    <link:label id="lab_dy_PotentialCompensationExpenseForPerformanceBasedSharesIfPerformanceGoalsAreMet_9C47F2A1907BA44B676A68E5EF99721E_terseLabel_en-US" xlink:label="lab_dy_PotentialCompensationExpenseForPerformanceBasedSharesIfPerformanceGoalsAreMet_9C47F2A1907BA44B676A68E5EF99721E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Compensation expense</link:label>
    <link:label id="lab_dy_PotentialCompensationExpenseForPerformanceBasedSharesIfPerformanceGoalsAreMet_9C47F2A1907BA44B676A68E5EF99721E_label_en-US" xlink:label="lab_dy_PotentialCompensationExpenseForPerformanceBasedSharesIfPerformanceGoalsAreMet_9C47F2A1907BA44B676A68E5EF99721E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Potential Compensation Expense for Performance Based Shares If Performance Goals Are Met</link:label>
    <link:label id="lab_dy_PotentialCompensationExpenseForPerformanceBasedSharesIfPerformanceGoalsAreMet_9C47F2A1907BA44B676A68E5EF99721E_documentation_en-US" xlink:label="lab_dy_PotentialCompensationExpenseForPerformanceBasedSharesIfPerformanceGoalsAreMet_9C47F2A1907BA44B676A68E5EF99721E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Potential Compensation Expense for Performance Based Shares If Performance Goals Are Met</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_PotentialCompensationExpenseForPerformanceBasedSharesIfPerformanceGoalsAreMet" xlink:label="loc_dy_PotentialCompensationExpenseForPerformanceBasedSharesIfPerformanceGoalsAreMet_9C47F2A1907BA44B676A68E5EF99721E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_PotentialCompensationExpenseForPerformanceBasedSharesIfPerformanceGoalsAreMet_9C47F2A1907BA44B676A68E5EF99721E" xlink:to="lab_dy_PotentialCompensationExpenseForPerformanceBasedSharesIfPerformanceGoalsAreMet_9C47F2A1907BA44B676A68E5EF99721E" xlink:type="arc" />
    <link:label id="lab_dy_ShareBasedCompensationByShareBasedPaymentAwardEquityAwardsOtherThanOptionsTargetAmount_107C5C4919D60D9BD8FB68E5EF997597_terseLabel_en-US" xlink:label="lab_dy_ShareBasedCompensationByShareBasedPaymentAwardEquityAwardsOtherThanOptionsTargetAmount_107C5C4919D60D9BD8FB68E5EF997597" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">RSUs outstanding</link:label>
    <link:label id="lab_dy_ShareBasedCompensationByShareBasedPaymentAwardEquityAwardsOtherThanOptionsTargetAmount_107C5C4919D60D9BD8FB68E5EF997597_label_en-US" xlink:label="lab_dy_ShareBasedCompensationByShareBasedPaymentAwardEquityAwardsOtherThanOptionsTargetAmount_107C5C4919D60D9BD8FB68E5EF997597" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation by Share-based Payment Award, Equity Awards Other than Options, Target Amount</link:label>
    <link:label id="lab_dy_ShareBasedCompensationByShareBasedPaymentAwardEquityAwardsOtherThanOptionsTargetAmount_107C5C4919D60D9BD8FB68E5EF997597_documentation_en-US" xlink:label="lab_dy_ShareBasedCompensationByShareBasedPaymentAwardEquityAwardsOtherThanOptionsTargetAmount_107C5C4919D60D9BD8FB68E5EF997597" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Share-based compensation by share-based payment award, equity awards other than options, target amount of performance shares</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_ShareBasedCompensationByShareBasedPaymentAwardEquityAwardsOtherThanOptionsTargetAmount" xlink:label="loc_dy_ShareBasedCompensationByShareBasedPaymentAwardEquityAwardsOtherThanOptionsTargetAmount_107C5C4919D60D9BD8FB68E5EF997597" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_ShareBasedCompensationByShareBasedPaymentAwardEquityAwardsOtherThanOptionsTargetAmount_107C5C4919D60D9BD8FB68E5EF997597" xlink:to="lab_dy_ShareBasedCompensationByShareBasedPaymentAwardEquityAwardsOtherThanOptionsTargetAmount_107C5C4919D60D9BD8FB68E5EF997597" xlink:type="arc" />
    <link:label id="lab_dy_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsCancelledinPeriod_8000EC595E8FDFDEB36C68E5EF991B93_terseLabel_en-US" xlink:label="lab_dy_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsCancelledinPeriod_8000EC595E8FDFDEB36C68E5EF991B93" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Forfeited or cancelled</link:label>
    <link:label id="lab_dy_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsCancelledinPeriod_8000EC595E8FDFDEB36C68E5EF991B93_label_en-US" xlink:label="lab_dy_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsCancelledinPeriod_8000EC595E8FDFDEB36C68E5EF991B93" 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, Cancelled in Period</link:label>
    <link:label id="lab_dy_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsCancelledinPeriod_8000EC595E8FDFDEB36C68E5EF991B93_documentation_en-US" xlink:label="lab_dy_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsCancelledinPeriod_8000EC595E8FDFDEB36C68E5EF991B93" 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, Cancelled in Period</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsCancelledinPeriod" xlink:label="loc_dy_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsCancelledinPeriod_8000EC595E8FDFDEB36C68E5EF991B93" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsCancelledinPeriod_8000EC595E8FDFDEB36C68E5EF991B93" xlink:to="lab_dy_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsCancelledinPeriod_8000EC595E8FDFDEB36C68E5EF991B93" xlink:type="arc" />
    <link:label id="lab_dy_SharebasedCompensationbySharebasedPaymentAwardEquityAwardsOtherthanOptionsTargetSharesExpectedtobeCanceled_DF804F8E8853F7B721AA68E5EF9A403A_terseLabel_en-US" xlink:label="lab_dy_SharebasedCompensationbySharebasedPaymentAwardEquityAwardsOtherthanOptionsTargetSharesExpectedtobeCanceled_DF804F8E8853F7B721AA68E5EF9A403A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Share-based Compensation by Share-based Payment Award, Equity Awards Other than Options, Target Shares Expected to be Canceled</link:label>
    <link:label id="lab_dy_SharebasedCompensationbySharebasedPaymentAwardEquityAwardsOtherthanOptionsTargetSharesExpectedtobeCanceled_DF804F8E8853F7B721AA68E5EF9A403A_label_en-US" xlink:label="lab_dy_SharebasedCompensationbySharebasedPaymentAwardEquityAwardsOtherthanOptionsTargetSharesExpectedtobeCanceled_DF804F8E8853F7B721AA68E5EF9A403A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation by Share-based Payment Award, Equity Awards Other than Options, Target Shares Expected to be Canceled</link:label>
    <link:label id="lab_dy_SharebasedCompensationbySharebasedPaymentAwardEquityAwardsOtherthanOptionsTargetSharesExpectedtobeCanceled_DF804F8E8853F7B721AA68E5EF9A403A_documentation_en-US" xlink:label="lab_dy_SharebasedCompensationbySharebasedPaymentAwardEquityAwardsOtherthanOptionsTargetSharesExpectedtobeCanceled_DF804F8E8853F7B721AA68E5EF9A403A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Share-based Compensation by Share-based Payment Award, Equity Awards Other than Options, Target Shares Expected to be Canceled</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_SharebasedCompensationbySharebasedPaymentAwardEquityAwardsOtherthanOptionsTargetSharesExpectedtobeCanceled" xlink:label="loc_dy_SharebasedCompensationbySharebasedPaymentAwardEquityAwardsOtherthanOptionsTargetSharesExpectedtobeCanceled_DF804F8E8853F7B721AA68E5EF9A403A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_SharebasedCompensationbySharebasedPaymentAwardEquityAwardsOtherthanOptionsTargetSharesExpectedtobeCanceled_DF804F8E8853F7B721AA68E5EF9A403A" xlink:to="lab_dy_SharebasedCompensationbySharebasedPaymentAwardEquityAwardsOtherthanOptionsTargetSharesExpectedtobeCanceled_DF804F8E8853F7B721AA68E5EF9A403A" xlink:type="arc" />
    <link:label id="lab_dy_SharebasedCompensationbySharebasedPaymentAwardEquityAwardsOtherthanOptionsSupplementalSharesExpectedtobeCanceled_1A6AA6405437D79FE37068E5EF9AAE90_terseLabel_en-US" xlink:label="lab_dy_SharebasedCompensationbySharebasedPaymentAwardEquityAwardsOtherthanOptionsSupplementalSharesExpectedtobeCanceled_1A6AA6405437D79FE37068E5EF9AAE90" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Share-based Compensation by Share-based Payment Award, Equity Awards Other than Options, Supplemental Shares Expected to be Canceled</link:label>
    <link:label id="lab_dy_SharebasedCompensationbySharebasedPaymentAwardEquityAwardsOtherthanOptionsSupplementalSharesExpectedtobeCanceled_1A6AA6405437D79FE37068E5EF9AAE90_label_en-US" xlink:label="lab_dy_SharebasedCompensationbySharebasedPaymentAwardEquityAwardsOtherthanOptionsSupplementalSharesExpectedtobeCanceled_1A6AA6405437D79FE37068E5EF9AAE90" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation by Share-based Payment Award, Equity Awards Other than Options, Supplemental Shares Expected to be Canceled</link:label>
    <link:label id="lab_dy_SharebasedCompensationbySharebasedPaymentAwardEquityAwardsOtherthanOptionsSupplementalSharesExpectedtobeCanceled_1A6AA6405437D79FE37068E5EF9AAE90_documentation_en-US" xlink:label="lab_dy_SharebasedCompensationbySharebasedPaymentAwardEquityAwardsOtherthanOptionsSupplementalSharesExpectedtobeCanceled_1A6AA6405437D79FE37068E5EF9AAE90" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Share-based Compensation by Share-based Payment Award, Equity Awards Other than Options, Supplemental Shares Expected to be Canceled</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_SharebasedCompensationbySharebasedPaymentAwardEquityAwardsOtherthanOptionsSupplementalSharesExpectedtobeCanceled" xlink:label="loc_dy_SharebasedCompensationbySharebasedPaymentAwardEquityAwardsOtherthanOptionsSupplementalSharesExpectedtobeCanceled_1A6AA6405437D79FE37068E5EF9AAE90" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_SharebasedCompensationbySharebasedPaymentAwardEquityAwardsOtherthanOptionsSupplementalSharesExpectedtobeCanceled_1A6AA6405437D79FE37068E5EF9AAE90" xlink:to="lab_dy_SharebasedCompensationbySharebasedPaymentAwardEquityAwardsOtherthanOptionsSupplementalSharesExpectedtobeCanceled_1A6AA6405437D79FE37068E5EF9AAE90" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_126CDF663164FB64CD0C68E5EF9AC52C_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_126CDF663164FB64CD0C68E5EF9AC52C" 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</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_126CDF663164FB64CD0C68E5EF9AC52C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_126CDF663164FB64CD0C68E5EF9AC52C" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_126CDF663164FB64CD0C68E5EF9AC52C" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_A0D41B788C5A6F1E7F6F7909CEB1915E_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_A0D41B788C5A6F1E7F6F7909CEB1915E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Accounts, Notes, Loans and Financing Receivable [Table]</link:label>
    <link:label id="lab_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_A0D41B788C5A6F1E7F6F7909CEB1915E_label_en-US" xlink:label="lab_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_A0D41B788C5A6F1E7F6F7909CEB1915E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Accounts, Notes, Loans and Financing Receivable [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable" xlink:label="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_A0D41B788C5A6F1E7F6F7909CEB1915E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_A0D41B788C5A6F1E7F6F7909CEB1915E" xlink:to="lab_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_A0D41B788C5A6F1E7F6F7909CEB1915E" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyTypeAxis_F794F83F09FA9A28CE607909CEB1D0F9_terseLabel_en-US" xlink:label="lab_us-gaap_AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyTypeAxis_F794F83F09FA9A28CE607909CEB1D0F9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Legal Entity of Counterparty, Type [Axis]</link:label>
    <link:label id="lab_us-gaap_AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyTypeAxis_F794F83F09FA9A28CE607909CEB1D0F9_label_en-US" xlink:label="lab_us-gaap_AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyTypeAxis_F794F83F09FA9A28CE607909CEB1D0F9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Legal Entity of Counterparty, Type [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyTypeAxis" xlink:label="loc_us-gaap_AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyTypeAxis_F794F83F09FA9A28CE607909CEB1D0F9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyTypeAxis_F794F83F09FA9A28CE607909CEB1D0F9" xlink:to="lab_us-gaap_AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyTypeAxis_F794F83F09FA9A28CE607909CEB1D0F9" xlink:type="arc" />
    <link:label id="lab_us-gaap_LegalEntityTypeOfCounterpartyDomain_C72736A7FC7840B95D977909CEB13AAB_terseLabel_en-US" xlink:label="lab_us-gaap_LegalEntityTypeOfCounterpartyDomain_C72736A7FC7840B95D977909CEB13AAB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Legal Entity Type of Counterparty [Domain]</link:label>
    <link:label id="lab_us-gaap_LegalEntityTypeOfCounterpartyDomain_C72736A7FC7840B95D977909CEB13AAB_label_en-US" xlink:label="lab_us-gaap_LegalEntityTypeOfCounterpartyDomain_C72736A7FC7840B95D977909CEB13AAB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Legal Entity Type of Counterparty [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LegalEntityTypeOfCounterpartyDomain" xlink:label="loc_us-gaap_LegalEntityTypeOfCounterpartyDomain_C72736A7FC7840B95D977909CEB13AAB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LegalEntityTypeOfCounterpartyDomain_C72736A7FC7840B95D977909CEB13AAB" xlink:to="lab_us-gaap_LegalEntityTypeOfCounterpartyDomain_C72736A7FC7840B95D977909CEB13AAB" xlink:type="arc" />
    <link:label id="lab_us-gaap_CorporationMember_CD03D17CF7BED8978F537909CEB1C829_terseLabel_en-US" xlink:label="lab_us-gaap_CorporationMember_CD03D17CF7BED8978F537909CEB1C829" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Corporation</link:label>
    <link:label id="lab_us-gaap_CorporationMember_CD03D17CF7BED8978F537909CEB1C829_label_en-US" xlink:label="lab_us-gaap_CorporationMember_CD03D17CF7BED8978F537909CEB1C829" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Corporation [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CorporationMember" xlink:label="loc_us-gaap_CorporationMember_CD03D17CF7BED8978F537909CEB1C829" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CorporationMember_CD03D17CF7BED8978F537909CEB1C829" xlink:to="lab_us-gaap_CorporationMember_CD03D17CF7BED8978F537909CEB1C829" xlink:type="arc" />
    <link:label id="lab_us-gaap_SubsequentEventTypeAxis_856955EF70DCFBEFEE937909CEB18EEB_terseLabel_en-US" xlink:label="lab_us-gaap_SubsequentEventTypeAxis_856955EF70DCFBEFEE937909CEB18EEB" 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_856955EF70DCFBEFEE937909CEB18EEB_label_en-US" xlink:label="lab_us-gaap_SubsequentEventTypeAxis_856955EF70DCFBEFEE937909CEB18EEB" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SubsequentEventTypeAxis" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_856955EF70DCFBEFEE937909CEB18EEB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_856955EF70DCFBEFEE937909CEB18EEB" xlink:to="lab_us-gaap_SubsequentEventTypeAxis_856955EF70DCFBEFEE937909CEB18EEB" xlink:type="arc" />
    <link:label id="lab_us-gaap_SubsequentEventTypeDomain_26F28322A7829E14E6D17909CEB17738_terseLabel_en-US" xlink:label="lab_us-gaap_SubsequentEventTypeDomain_26F28322A7829E14E6D17909CEB17738" 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_26F28322A7829E14E6D17909CEB17738_label_en-US" xlink:label="lab_us-gaap_SubsequentEventTypeDomain_26F28322A7829E14E6D17909CEB17738" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SubsequentEventTypeDomain" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_26F28322A7829E14E6D17909CEB17738" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_26F28322A7829E14E6D17909CEB17738" xlink:to="lab_us-gaap_SubsequentEventTypeDomain_26F28322A7829E14E6D17909CEB17738" xlink:type="arc" />
    <link:label id="lab_us-gaap_SubsequentEventMember_BDF291808A8298D4D1C67909CEB1DD5F_terseLabel_en-US" xlink:label="lab_us-gaap_SubsequentEventMember_BDF291808A8298D4D1C67909CEB1DD5F" 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_BDF291808A8298D4D1C67909CEB1DD5F_label_en-US" xlink:label="lab_us-gaap_SubsequentEventMember_BDF291808A8298D4D1C67909CEB1DD5F" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SubsequentEventMember" xlink:label="loc_us-gaap_SubsequentEventMember_BDF291808A8298D4D1C67909CEB1DD5F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SubsequentEventMember_BDF291808A8298D4D1C67909CEB1DD5F" xlink:to="lab_us-gaap_SubsequentEventMember_BDF291808A8298D4D1C67909CEB1DD5F" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccountsNotesAndLoansReceivableLineItems_4815B89852EBD49713FF7909CEB196C8_terseLabel_en-US" xlink:label="lab_us-gaap_AccountsNotesAndLoansReceivableLineItems_4815B89852EBD49713FF7909CEB196C8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accounts, Notes, Loans and Financing Receivable [Line Items]</link:label>
    <link:label id="lab_us-gaap_AccountsNotesAndLoansReceivableLineItems_4815B89852EBD49713FF7909CEB196C8_label_en-US" xlink:label="lab_us-gaap_AccountsNotesAndLoansReceivableLineItems_4815B89852EBD49713FF7909CEB196C8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accounts, Notes, Loans and Financing Receivable [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:label="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_4815B89852EBD49713FF7909CEB196C8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_4815B89852EBD49713FF7909CEB196C8" xlink:to="lab_us-gaap_AccountsNotesAndLoansReceivableLineItems_4815B89852EBD49713FF7909CEB196C8" xlink:type="arc" />
    <link:label id="lab_us-gaap_BilledContractReceivables_3D0E284375B81D0898DF7909CEB25753_terseLabel_en-US" xlink:label="lab_us-gaap_BilledContractReceivables_3D0E284375B81D0898DF7909CEB25753" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Contract billings</link:label>
    <link:label id="lab_us-gaap_BilledContractReceivables_3D0E284375B81D0898DF7909CEB25753_label_en-US" xlink:label="lab_us-gaap_BilledContractReceivables_3D0E284375B81D0898DF7909CEB25753" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Billed Contracts Receivable</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_BilledContractReceivables" xlink:label="loc_us-gaap_BilledContractReceivables_3D0E284375B81D0898DF7909CEB25753" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BilledContractReceivables_3D0E284375B81D0898DF7909CEB25753" xlink:to="lab_us-gaap_BilledContractReceivables_3D0E284375B81D0898DF7909CEB25753" xlink:type="arc" />
    <link:label id="lab_dy_ContractReceivableRetainageAndOtherReceivables_959F52BDF7112357CBCA7909CEB2D4E4_terseLabel_en-US" xlink:label="lab_dy_ContractReceivableRetainageAndOtherReceivables_959F52BDF7112357CBCA7909CEB2D4E4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Retainage and other receivables</link:label>
    <link:label id="lab_dy_ContractReceivableRetainageAndOtherReceivables_959F52BDF7112357CBCA7909CEB2D4E4_label_en-US" xlink:label="lab_dy_ContractReceivableRetainageAndOtherReceivables_959F52BDF7112357CBCA7909CEB2D4E4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Contract Receivable Retainage and Other Receivables</link:label>
    <link:label id="lab_dy_ContractReceivableRetainageAndOtherReceivables_959F52BDF7112357CBCA7909CEB2D4E4_documentation_en-US" xlink:label="lab_dy_ContractReceivableRetainageAndOtherReceivables_959F52BDF7112357CBCA7909CEB2D4E4" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Contract Receivable Retainage and Other Receivables</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_ContractReceivableRetainageAndOtherReceivables" xlink:label="loc_dy_ContractReceivableRetainageAndOtherReceivables_959F52BDF7112357CBCA7909CEB2D4E4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_ContractReceivableRetainageAndOtherReceivables_959F52BDF7112357CBCA7909CEB2D4E4" xlink:to="lab_dy_ContractReceivableRetainageAndOtherReceivables_959F52BDF7112357CBCA7909CEB2D4E4" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccountsReceivableGross_1C57F86B24306D7F3B567909CEB207C9_totalLabel_en-US" xlink:label="lab_us-gaap_AccountsReceivableGross_1C57F86B24306D7F3B567909CEB207C9" 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_AccountsReceivableGross_1C57F86B24306D7F3B567909CEB207C9_label_en-US" xlink:label="lab_us-gaap_AccountsReceivableGross_1C57F86B24306D7F3B567909CEB207C9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accounts Receivable, Gross</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AccountsReceivableGross" xlink:label="loc_us-gaap_AccountsReceivableGross_1C57F86B24306D7F3B567909CEB207C9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountsReceivableGross_1C57F86B24306D7F3B567909CEB207C9" xlink:to="lab_us-gaap_AccountsReceivableGross_1C57F86B24306D7F3B567909CEB207C9" xlink:type="arc" />
    <link:label id="lab_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_D13919FE6C52650CF44A7909CEB22FAB_negatedLabel_en-US" xlink:label="lab_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_D13919FE6C52650CF44A7909CEB22FAB" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Less: allowance for doubtful accounts</link:label>
    <link:label id="lab_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_D13919FE6C52650CF44A7909CEB22FAB_label_en-US" xlink:label="lab_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_D13919FE6C52650CF44A7909CEB22FAB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Allowance for Doubtful Accounts Receivable, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent" xlink:label="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_D13919FE6C52650CF44A7909CEB22FAB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_D13919FE6C52650CF44A7909CEB22FAB" xlink:to="lab_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_D13919FE6C52650CF44A7909CEB22FAB" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccountsReceivableNet_19E70E37D5E0B2DD1A287909CEB204A5_totalLabel_en-US" xlink:label="lab_us-gaap_AccountsReceivableNet_19E70E37D5E0B2DD1A287909CEB204A5" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Accounts receivable, net</link:label>
    <link:label id="lab_us-gaap_AccountsReceivableNet_19E70E37D5E0B2DD1A287909CEB204A5_label_en-US" xlink:label="lab_us-gaap_AccountsReceivableNet_19E70E37D5E0B2DD1A287909CEB204A5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accounts Receivable, Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AccountsReceivableNet" xlink:label="loc_us-gaap_AccountsReceivableNet_19E70E37D5E0B2DD1A287909CEB204A5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountsReceivableNet_19E70E37D5E0B2DD1A287909CEB204A5" xlink:to="lab_us-gaap_AccountsReceivableNet_19E70E37D5E0B2DD1A287909CEB204A5" xlink:type="arc" />
    <link:label id="lab_dy_CollectionofPastDueReceivableBalance_CE01FB60A6A6C77AB7087909CEB2286D_terseLabel_en-US" xlink:label="lab_dy_CollectionofPastDueReceivableBalance_CE01FB60A6A6C77AB7087909CEB2286D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Collection of Past Due Receivable Balance</link:label>
    <link:label id="lab_dy_CollectionofPastDueReceivableBalance_CE01FB60A6A6C77AB7087909CEB2286D_label_en-US" xlink:label="lab_dy_CollectionofPastDueReceivableBalance_CE01FB60A6A6C77AB7087909CEB2286D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Collection of Past Due Receivable Balance</link:label>
    <link:label id="lab_dy_CollectionofPastDueReceivableBalance_CE01FB60A6A6C77AB7087909CEB2286D_documentation_en-US" xlink:label="lab_dy_CollectionofPastDueReceivableBalance_CE01FB60A6A6C77AB7087909CEB2286D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Collection of Past Due Receivable Balance</link:label>
    <link:loc xlink:href="dy-20150425.xsd#dy_CollectionofPastDueReceivableBalance" xlink:label="loc_dy_CollectionofPastDueReceivableBalance_CE01FB60A6A6C77AB7087909CEB2286D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dy_CollectionofPastDueReceivableBalance_CE01FB60A6A6C77AB7087909CEB2286D" xlink:to="lab_dy_CollectionofPastDueReceivableBalance_CE01FB60A6A6C77AB7087909CEB2286D" xlink:type="arc" />
  </link:labelLink>
</link:linkbase>
