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    <link:label id="lab_us-gaap_ResidentialPortfolioSegmentMember_3963B81F94B5DE95FA3D7A4519F466B3_terseLabel_en-US" xlink:label="lab_us-gaap_ResidentialPortfolioSegmentMember_3963B81F94B5DE95FA3D7A4519F466B3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Residential</link:label>
    <link:label id="lab_us-gaap_ResidentialPortfolioSegmentMember_3963B81F94B5DE95FA3D7A4519F466B3_label_en-US" xlink:label="lab_us-gaap_ResidentialPortfolioSegmentMember_3963B81F94B5DE95FA3D7A4519F466B3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Residential Portfolio Segment [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ResidentialPortfolioSegmentMember" xlink:label="loc_us-gaap_ResidentialPortfolioSegmentMember_3963B81F94B5DE95FA3D7A4519F466B3" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ConsumerPortfolioSegmentMember_94C1A2B4E66FA0BFCF077A4519F480AC_terseLabel_en-US" xlink:label="lab_us-gaap_ConsumerPortfolioSegmentMember_94C1A2B4E66FA0BFCF077A4519F480AC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Consumer</link:label>
    <link:label id="lab_us-gaap_ConsumerPortfolioSegmentMember_94C1A2B4E66FA0BFCF077A4519F480AC_label_en-US" xlink:label="lab_us-gaap_ConsumerPortfolioSegmentMember_94C1A2B4E66FA0BFCF077A4519F480AC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Consumer Portfolio Segment [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ConsumerPortfolioSegmentMember" xlink:label="loc_us-gaap_ConsumerPortfolioSegmentMember_94C1A2B4E66FA0BFCF077A4519F480AC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConsumerPortfolioSegmentMember_94C1A2B4E66FA0BFCF077A4519F480AC" xlink:to="lab_us-gaap_ConsumerPortfolioSegmentMember_94C1A2B4E66FA0BFCF077A4519F480AC" xlink:type="arc" />
    <link:label id="lab_us-gaap_LoanRestructuringModificationAxis_9C04E3D4CC3CA00569CA7A4519F49646_terseLabel_en-US" xlink:label="lab_us-gaap_LoanRestructuringModificationAxis_9C04E3D4CC3CA00569CA7A4519F49646" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loan Restructuring Modification [Axis]</link:label>
    <link:label id="lab_us-gaap_LoanRestructuringModificationAxis_9C04E3D4CC3CA00569CA7A4519F49646_label_en-US" xlink:label="lab_us-gaap_LoanRestructuringModificationAxis_9C04E3D4CC3CA00569CA7A4519F49646" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loan Restructuring Modification [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_LoanRestructuringModificationAxis" xlink:label="loc_us-gaap_LoanRestructuringModificationAxis_9C04E3D4CC3CA00569CA7A4519F49646" xlink:type="locator" />
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    <link:label id="lab_us-gaap_LoanRestructuringModificationDomain_9B581CA276B0DE3DFEA97A4519F4492F_terseLabel_en-US" xlink:label="lab_us-gaap_LoanRestructuringModificationDomain_9B581CA276B0DE3DFEA97A4519F4492F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loan Restructuring Modification [Domain]</link:label>
    <link:label id="lab_us-gaap_LoanRestructuringModificationDomain_9B581CA276B0DE3DFEA97A4519F4492F_label_en-US" xlink:label="lab_us-gaap_LoanRestructuringModificationDomain_9B581CA276B0DE3DFEA97A4519F4492F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loan Restructuring Modification [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_LoanRestructuringModificationDomain" xlink:label="loc_us-gaap_LoanRestructuringModificationDomain_9B581CA276B0DE3DFEA97A4519F4492F" xlink:type="locator" />
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    <link:label id="lab_ewbc_PrincipalForbearancePaymentsTermExtensionsPrincipalDefermentsMember_D226BC65921D3BF9C04B7A4519F49F3F_terseLabel_en-US" xlink:label="lab_ewbc_PrincipalForbearancePaymentsTermExtensionsPrincipalDefermentsMember_D226BC65921D3BF9C04B7A4519F49F3F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Principal</link:label>
    <link:label id="lab_ewbc_PrincipalForbearancePaymentsTermExtensionsPrincipalDefermentsMember_D226BC65921D3BF9C04B7A4519F49F3F_label_en-US" xlink:label="lab_ewbc_PrincipalForbearancePaymentsTermExtensionsPrincipalDefermentsMember_D226BC65921D3BF9C04B7A4519F49F3F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Principal Forbearance Payments, Term Extensions, Principal Deferments [Member]</link:label>
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    <link:loc xlink:href="ewbc-20170630.xsd#ewbc_PrincipalForbearancePaymentsTermExtensionsPrincipalDefermentsMember" xlink:label="loc_ewbc_PrincipalForbearancePaymentsTermExtensionsPrincipalDefermentsMember_D226BC65921D3BF9C04B7A4519F49F3F" xlink:type="locator" />
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    <link:label id="lab_ewbc_PrincipalAndInterestDefermentsOrReductionsMember_1FD0692CA7010E45E7F87A4519F4F6A6_terseLabel_en-US" xlink:label="lab_ewbc_PrincipalAndInterestDefermentsOrReductionsMember_1FD0692CA7010E45E7F87A4519F4F6A6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Principal and Interest</link:label>
    <link:label id="lab_ewbc_PrincipalAndInterestDefermentsOrReductionsMember_1FD0692CA7010E45E7F87A4519F4F6A6_label_en-US" xlink:label="lab_ewbc_PrincipalAndInterestDefermentsOrReductionsMember_1FD0692CA7010E45E7F87A4519F4F6A6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Principal And Interest Deferments Or Reductions [Member]</link:label>
    <link:label id="lab_ewbc_PrincipalAndInterestDefermentsOrReductionsMember_1FD0692CA7010E45E7F87A4519F4F6A6_documentation_en-US" xlink:label="lab_ewbc_PrincipalAndInterestDefermentsOrReductionsMember_1FD0692CA7010E45E7F87A4519F4F6A6" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Principal And Interest Deferments Or Reductions [Member]</link:label>
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    <link:label id="lab_ewbc_OtherModificationsMember_760C46B86453E7B54F5B7A4519F417E8_terseLabel_en-US" xlink:label="lab_ewbc_OtherModificationsMember_760C46B86453E7B54F5B7A4519F417E8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other</link:label>
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    <link:label id="lab_ewbc_OtherModificationsMember_760C46B86453E7B54F5B7A4519F417E8_documentation_en-US" xlink:label="lab_ewbc_OtherModificationsMember_760C46B86453E7B54F5B7A4519F417E8" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other Modifications [Member]</link:label>
    <link:loc xlink:href="ewbc-20170630.xsd#ewbc_OtherModificationsMember" xlink:label="loc_ewbc_OtherModificationsMember_760C46B86453E7B54F5B7A4519F417E8" xlink:type="locator" />
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    <link:label id="lab_us-gaap_FinancingReceivableModificationsLineItems_60C4BCCB406A619388AD7A4519F59B2D_terseLabel_en-US" xlink:label="lab_us-gaap_FinancingReceivableModificationsLineItems_60C4BCCB406A619388AD7A4519F59B2D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financing Receivable, Modifications [Line Items]</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_FinancingReceivableModificationsLineItems" xlink:label="loc_us-gaap_FinancingReceivableModificationsLineItems_60C4BCCB406A619388AD7A4519F59B2D" xlink:type="locator" />
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    <link:label id="lab_us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2_88B0FA4D8B3660A07ED37A4519F576C7_verboseLabel_en-US" xlink:label="lab_us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2_88B0FA4D8B3660A07ED37A4519F576C7" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Post-modification outstanding recorded investment</link:label>
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    <link:label id="lab_us-gaap_FairValueMeasurementsNonrecurringMember_A1D4679013A043452DD8BD87EA1FA181_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueMeasurementsNonrecurringMember_A1D4679013A043452DD8BD87EA1FA181" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair Value, Measurements, Nonrecurring</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_FairValueMeasurementsNonrecurringMember" xlink:label="loc_us-gaap_FairValueMeasurementsNonrecurringMember_A1D4679013A043452DD8BD87EA1FA181" xlink:type="locator" />
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    <link:label id="lab_ewbc_ReceivablesOriginatedOrAcquiredWithoutDeterioratedCreditQualityMember_69597625BE144D23FC26BD87EA1F825D_verboseLabel_en-US" xlink:label="lab_ewbc_ReceivablesOriginatedOrAcquiredWithoutDeterioratedCreditQualityMember_69597625BE144D23FC26BD87EA1F825D" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Non-PCI impaired loans</link:label>
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    <link:label id="lab_ewbc_OtherRealEstateOwnedMember_0A06EFD70D4A5B0B5E6DBD87EA1FC972_terseLabel_en-US" xlink:label="lab_ewbc_OtherRealEstateOwnedMember_0A06EFD70D4A5B0B5E6DBD87EA1FC972" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">OREO</link:label>
    <link:label id="lab_ewbc_OtherRealEstateOwnedMember_0A06EFD70D4A5B0B5E6DBD87EA1FC972_label_en-US" xlink:label="lab_ewbc_OtherRealEstateOwnedMember_0A06EFD70D4A5B0B5E6DBD87EA1FC972" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Real Estate Owned [Member]</link:label>
    <link:label id="lab_ewbc_OtherRealEstateOwnedMember_0A06EFD70D4A5B0B5E6DBD87EA1FC972_documentation_en-US" xlink:label="lab_ewbc_OtherRealEstateOwnedMember_0A06EFD70D4A5B0B5E6DBD87EA1FC972" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents other real estate owned.</link:label>
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    <link:label id="lab_ewbc_LoansHeldForSaleMember_E69835CAFB970E6AB7A2BD87EA1F2884_terseLabel_en-US" xlink:label="lab_ewbc_LoansHeldForSaleMember_E69835CAFB970E6AB7A2BD87EA1F2884" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loans held-for-sale</link:label>
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    <link:label id="lab_ewbc_LoansHeldForSaleMember_E69835CAFB970E6AB7A2BD87EA1F2884_documentation_en-US" xlink:label="lab_ewbc_LoansHeldForSaleMember_E69835CAFB970E6AB7A2BD87EA1F2884" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Loans held-for-sale including, but not limited to, mortgage loans and finance receivables.</link:label>
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    <link:label id="lab_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_32D676C33A1C66610EE9CBA9113E81A3_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_5DC0FB4DDBAD50BF944522CEF6C9DA3C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of earnings per share calculations</link:label>
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    <link:label id="lab_ewbc_IncomeProducingFinancingReceivableMember_3FBE100341774B4229295380BD530397_terseLabel_en-US" xlink:label="lab_ewbc_IncomeProducingFinancingReceivableMember_3FBE100341774B4229295380BD530397" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Income producing</link:label>
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    <link:label id="lab_ewbc_LandCommercialRealEstateMember_28C8B52357E1857D3C555380BD5389B7_terseLabel_en-US" xlink:label="lab_ewbc_LandCommercialRealEstateMember_28C8B52357E1857D3C555380BD5389B7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Land</link:label>
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    <link:label id="lab_ewbc_LandCommercialRealEstateMember_28C8B52357E1857D3C555380BD5389B7_documentation_en-US" xlink:label="lab_ewbc_LandCommercialRealEstateMember_28C8B52357E1857D3C555380BD5389B7" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Class of financing receivables related to commercial real estate land financing receivables.</link:label>
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    <link:label id="lab_ewbc_FinancingReceivables1To89DaysPastDueMember_CF94A0D2547A66527482CB91B3A307BE_terseLabel_en-US" xlink:label="lab_ewbc_FinancingReceivables1To89DaysPastDueMember_38B86AE0F414574A8CB44179C4DC706A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Nonaccrual Loans Less Than 90 Days Past Due</link:label>
    <link:label id="lab_ewbc_FinancingReceivables1To89DaysPastDueMember_CF94A0D2547A66527482CB91B3A307BE_label_en-US" xlink:label="lab_ewbc_FinancingReceivables1To89DaysPastDueMember_38B86AE0F414574A8CB44179C4DC706A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financing Receivables, 1 To 89 Days Past Due [Member]</link:label>
    <link:label id="lab_ewbc_FinancingReceivables1To89DaysPastDueMember_CF94A0D2547A66527482CB91B3A307BE_documentation_en-US" xlink:label="lab_ewbc_FinancingReceivables1To89DaysPastDueMember_38B86AE0F414574A8CB44179C4DC706A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Financing Receivables, 1 To 89 Days Past Due [Member]</link:label>
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    <link:label id="lab_us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember_5F9FE9B4BFBC7C7DABCDCB91B3A3F284_terseLabel_en-US" xlink:label="lab_us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember_364EC6155762563BB905B91C664A62E1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Nonaccrual Loans 90 or More Days Past Due</link:label>
    <link:label id="lab_us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember_5F9FE9B4BFBC7C7DABCDCB91B3A3F284_label_en-US" xlink:label="lab_us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember_364EC6155762563BB905B91C664A62E1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financing Receivables, Equal to Greater than 90 Days Past Due [Member]</link:label>
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    <link:label id="lab_us-gaap_FinancingReceivableRecordedInvestmentPastDueLineItems_11EA4DA3B1319CFE5642CB91B3AA347D_terseLabel_en-US" xlink:label="lab_us-gaap_FinancingReceivableRecordedInvestmentPastDueLineItems_C6459A3297C75EF5AEE0075E1CAE55E1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Nonaccrual and Past Due Loans</link:label>
    <link:label id="lab_us-gaap_FinancingReceivableRecordedInvestmentPastDueLineItems_11EA4DA3B1319CFE5642CB91B3AA347D_label_en-US" xlink:label="lab_us-gaap_FinancingReceivableRecordedInvestmentPastDueLineItems_C6459A3297C75EF5AEE0075E1CAE55E1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financing Receivable, Recorded Investment, Past Due [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestmentPastDueLineItems" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentPastDueLineItems_C6459A3297C75EF5AEE0075E1CAE55E1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentPastDueLineItems_C6459A3297C75EF5AEE0075E1CAE55E1" xlink:to="lab_us-gaap_FinancingReceivableRecordedInvestmentPastDueLineItems_C6459A3297C75EF5AEE0075E1CAE55E1" xlink:type="arc" />
    <link:label id="lab_ewbc_NumberOfDaysBeyondLoanClassifiedNonaccrual_C09BB6DCF66458BD28D2CB91B3AA5ABD_terseLabel_en-US" xlink:label="lab_ewbc_NumberOfDaysBeyondLoanClassifiedNonaccrual_229A908305B95C218B90A995D6E1D7DB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of days beyond loan classified nonaccrual</link:label>
    <link:label id="lab_ewbc_NumberOfDaysBeyondLoanClassifiedNonaccrual_C09BB6DCF66458BD28D2CB91B3AA5ABD_label_en-US" xlink:label="lab_ewbc_NumberOfDaysBeyondLoanClassifiedNonaccrual_229A908305B95C218B90A995D6E1D7DB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number Of Days Beyond Loan Classified Nonaccrual</link:label>
    <link:label id="lab_ewbc_NumberOfDaysBeyondLoanClassifiedNonaccrual_C09BB6DCF66458BD28D2CB91B3AA5ABD_documentation_en-US" xlink:label="lab_ewbc_NumberOfDaysBeyondLoanClassifiedNonaccrual_229A908305B95C218B90A995D6E1D7DB" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The number of days a loan is past due and is placed on nonaccrual status.</link:label>
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    <link:label id="lab_us-gaap_FinancingReceivableRecordedInvestmentPastDue_1059BC9C9D34D5A6D792CB91B3AA756A_terseLabel_en-US" xlink:label="lab_us-gaap_FinancingReceivableRecordedInvestmentPastDue_E5C09B9915DE572F8AD1C6A20B827F8D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total Accruing Past Due Loans</link:label>
    <link:label id="lab_us-gaap_FinancingReceivableRecordedInvestmentPastDue_1059BC9C9D34D5A6D792CB91B3AA756A_label_en-US" xlink:label="lab_us-gaap_FinancingReceivableRecordedInvestmentPastDue_E5C09B9915DE572F8AD1C6A20B827F8D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financing Receivable, Recorded Investment, Past Due</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestmentPastDue" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentPastDue_E5C09B9915DE572F8AD1C6A20B827F8D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentPastDue_E5C09B9915DE572F8AD1C6A20B827F8D" xlink:to="lab_us-gaap_FinancingReceivableRecordedInvestmentPastDue_E5C09B9915DE572F8AD1C6A20B827F8D" xlink:type="arc" />
    <link:label id="lab_us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus_33F456CC63C34A81AC91CB91B3AACE9E_terseLabel_en-US" xlink:label="lab_us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus_F7F331E90F045D6F96B331B16B709974" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total Nonaccrual Loans</link:label>
    <link:label id="lab_us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus_33F456CC63C34A81AC91CB91B3AACE9E_label_en-US" xlink:label="lab_us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus_F7F331E90F045D6F96B331B16B709974" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financing Receivable, Recorded Investment, Nonaccrual Status</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus_F7F331E90F045D6F96B331B16B709974" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus_F7F331E90F045D6F96B331B16B709974" xlink:to="lab_us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus_F7F331E90F045D6F96B331B16B709974" xlink:type="arc" />
    <link:label id="lab_us-gaap_FinancingReceivableRecordedInvestmentCurrent_FDE836DA8B1A2741E863CB91B3AA2F28_terseLabel_en-US" xlink:label="lab_us-gaap_FinancingReceivableRecordedInvestmentCurrent_E28100B6F90E5541BCA443FD95B896AF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Current Accruing Loans</link:label>
    <link:label id="lab_us-gaap_FinancingReceivableRecordedInvestmentCurrent_FDE836DA8B1A2741E863CB91B3AA2F28_label_en-US" xlink:label="lab_us-gaap_FinancingReceivableRecordedInvestmentCurrent_E28100B6F90E5541BCA443FD95B896AF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financing Receivable, Recorded Investment, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestmentCurrent" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentCurrent_E28100B6F90E5541BCA443FD95B896AF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentCurrent_E28100B6F90E5541BCA443FD95B896AF" xlink:to="lab_us-gaap_FinancingReceivableRecordedInvestmentCurrent_E28100B6F90E5541BCA443FD95B896AF" xlink:type="arc" />
    <link:label id="lab_us-gaap_NotesReceivableGross_96B58444E9F1612003A9CB91B3AA1041_totalLabel_en-US" xlink:label="lab_us-gaap_NotesReceivableGross_6DA2E31515295B619AA5C10FCA1AC397" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total loans</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NotesReceivableGross" xlink:label="loc_us-gaap_NotesReceivableGross_6DA2E31515295B619AA5C10FCA1AC397" xlink:type="locator" />
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    <link:label id="lab_ewbc_LoansReceivableOriginatedMember_D70C9BE945774A4E9ADDAF3C3CA6C1EC_terseLabel_en-US" xlink:label="lab_ewbc_LoansReceivableOriginatedMember_D70C9BE945774A4E9ADDAF3C3CA6C1EC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Originated</link:label>
    <link:label id="lab_ewbc_LoansReceivableOriginatedMember_D70C9BE945774A4E9ADDAF3C3CA6C1EC_label_en-US" xlink:label="lab_ewbc_LoansReceivableOriginatedMember_D70C9BE945774A4E9ADDAF3C3CA6C1EC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loans Receivable, Originated [Member]</link:label>
    <link:label id="lab_ewbc_LoansReceivableOriginatedMember_D70C9BE945774A4E9ADDAF3C3CA6C1EC_documentation_en-US" xlink:label="lab_ewbc_LoansReceivableOriginatedMember_D70C9BE945774A4E9ADDAF3C3CA6C1EC" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Loans Receivable, Originated [Member]</link:label>
    <link:loc xlink:href="ewbc-20170630.xsd#ewbc_LoansReceivableOriginatedMember" xlink:label="loc_ewbc_LoansReceivableOriginatedMember_D70C9BE945774A4E9ADDAF3C3CA6C1EC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ewbc_LoansReceivableOriginatedMember_D70C9BE945774A4E9ADDAF3C3CA6C1EC" xlink:to="lab_ewbc_LoansReceivableOriginatedMember_D70C9BE945774A4E9ADDAF3C3CA6C1EC" xlink:type="arc" />
    <link:label id="lab_ewbc_LoansReceivablePurchasedMember_75026CFD2DA6C16CC61BAF3C3CA6BC47_terseLabel_en-US" xlink:label="lab_ewbc_LoansReceivablePurchasedMember_75026CFD2DA6C16CC61BAF3C3CA6BC47" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Purchased</link:label>
    <link:label id="lab_ewbc_LoansReceivablePurchasedMember_75026CFD2DA6C16CC61BAF3C3CA6BC47_label_en-US" xlink:label="lab_ewbc_LoansReceivablePurchasedMember_75026CFD2DA6C16CC61BAF3C3CA6BC47" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loans Receivable, Purchased [Member]</link:label>
    <link:label id="lab_ewbc_LoansReceivablePurchasedMember_75026CFD2DA6C16CC61BAF3C3CA6BC47_documentation_en-US" xlink:label="lab_ewbc_LoansReceivablePurchasedMember_75026CFD2DA6C16CC61BAF3C3CA6BC47" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Loans Receivable, Purchased [Member]</link:label>
    <link:loc xlink:href="ewbc-20170630.xsd#ewbc_LoansReceivablePurchasedMember" xlink:label="loc_ewbc_LoansReceivablePurchasedMember_75026CFD2DA6C16CC61BAF3C3CA6BC47" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ewbc_LoansReceivablePurchasedMember_75026CFD2DA6C16CC61BAF3C3CA6BC47" xlink:to="lab_ewbc_LoansReceivablePurchasedMember_75026CFD2DA6C16CC61BAF3C3CA6BC47" xlink:type="arc" />
    <link:label id="lab_ewbc_SinglefamilyResidentialCommercialAndIndustrialMember_92EBB89898064E52EA9AAF3C3CA63D4D_terseLabel_en-US" xlink:label="lab_ewbc_SinglefamilyResidentialCommercialAndIndustrialMember_92EBB89898064E52EA9AAF3C3CA63D4D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Single-family residential and C&amp;I</link:label>
    <link:label id="lab_ewbc_SinglefamilyResidentialCommercialAndIndustrialMember_92EBB89898064E52EA9AAF3C3CA63D4D_label_en-US" xlink:label="lab_ewbc_SinglefamilyResidentialCommercialAndIndustrialMember_92EBB89898064E52EA9AAF3C3CA63D4D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Single-family Residential, Commercial And Industrial [Member]</link:label>
    <link:label id="lab_ewbc_SinglefamilyResidentialCommercialAndIndustrialMember_92EBB89898064E52EA9AAF3C3CA63D4D_documentation_en-US" xlink:label="lab_ewbc_SinglefamilyResidentialCommercialAndIndustrialMember_92EBB89898064E52EA9AAF3C3CA63D4D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Single-family Residential, and Commercial And Industrial [Member]</link:label>
    <link:loc xlink:href="ewbc-20170630.xsd#ewbc_SinglefamilyResidentialCommercialAndIndustrialMember" xlink:label="loc_ewbc_SinglefamilyResidentialCommercialAndIndustrialMember_92EBB89898064E52EA9AAF3C3CA63D4D" xlink:type="locator" />
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    <link:label id="lab_ewbc_MultifamilyResidentialCommercialAndIndustrialAndCommercialRealEstateMember_18557F4F05397EB3625BAF3C3CA6DB8A_terseLabel_en-US" xlink:label="lab_ewbc_MultifamilyResidentialCommercialAndIndustrialAndCommercialRealEstateMember_18557F4F05397EB3625BAF3C3CA6DB8A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Multifamily residential, C&amp;I, and CRE</link:label>
    <link:label id="lab_ewbc_MultifamilyResidentialCommercialAndIndustrialAndCommercialRealEstateMember_18557F4F05397EB3625BAF3C3CA6DB8A_label_en-US" xlink:label="lab_ewbc_MultifamilyResidentialCommercialAndIndustrialAndCommercialRealEstateMember_18557F4F05397EB3625BAF3C3CA6DB8A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Multifamily Residential, Commercial And Industrial, And Commercial Real Estate [Member]</link:label>
    <link:label id="lab_ewbc_MultifamilyResidentialCommercialAndIndustrialAndCommercialRealEstateMember_18557F4F05397EB3625BAF3C3CA6DB8A_documentation_en-US" xlink:label="lab_ewbc_MultifamilyResidentialCommercialAndIndustrialAndCommercialRealEstateMember_18557F4F05397EB3625BAF3C3CA6DB8A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Multifamily Residential, Commercial And Industrial, And Commercial Real Estate [Member]</link:label>
    <link:loc xlink:href="ewbc-20170630.xsd#ewbc_MultifamilyResidentialCommercialAndIndustrialAndCommercialRealEstateMember" xlink:label="loc_ewbc_MultifamilyResidentialCommercialAndIndustrialAndCommercialRealEstateMember_18557F4F05397EB3625BAF3C3CA6DB8A" xlink:type="locator" />
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    <link:label id="lab_ewbc_ResidentialMultifamilyMember_4CE088CB8C287045DF82AF3C3CA711E1_terseLabel_en-US" xlink:label="lab_ewbc_ResidentialMultifamilyMember_4CE088CB8C287045DF82AF3C3CA711E1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Multifamily</link:label>
    <link:label id="lab_ewbc_ResidentialMultifamilyMember_4CE088CB8C287045DF82AF3C3CA711E1_label_en-US" xlink:label="lab_ewbc_ResidentialMultifamilyMember_4CE088CB8C287045DF82AF3C3CA711E1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Residential Multifamily [Member]</link:label>
    <link:label id="lab_ewbc_ResidentialMultifamilyMember_4CE088CB8C287045DF82AF3C3CA711E1_documentation_en-US" xlink:label="lab_ewbc_ResidentialMultifamilyMember_4CE088CB8C287045DF82AF3C3CA711E1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Class of financing receivables related to residential multifamily receivables.</link:label>
    <link:loc xlink:href="ewbc-20170630.xsd#ewbc_ResidentialMultifamilyMember" xlink:label="loc_ewbc_ResidentialMultifamilyMember_4CE088CB8C287045DF82AF3C3CA711E1" xlink:type="locator" />
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    <link:label id="lab_ewbc_LoansSoldInSecondaryMarketMember_22AD6015B97387B34795AF3C3CA7C107_terseLabel_en-US" xlink:label="lab_ewbc_LoansSoldInSecondaryMarketMember_22AD6015B97387B34795AF3C3CA7C107" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loans sold in secondary market</link:label>
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    <link:label id="lab_us-gaap_LoansReceivableHeldForSaleNetAbstract_3D3BEF18286F0F6908E7AF3C3CA7736F_terseLabel_en-US" xlink:label="lab_us-gaap_LoansReceivableHeldForSaleNetAbstract_3D3BEF18286F0F6908E7AF3C3CA7736F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loans Held-for-Sale</link:label>
    <link:label id="lab_us-gaap_LoansReceivableHeldForSaleNetAbstract_3D3BEF18286F0F6908E7AF3C3CA7736F_label_en-US" xlink:label="lab_us-gaap_LoansReceivableHeldForSaleNetAbstract_3D3BEF18286F0F6908E7AF3C3CA7736F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loans Receivable Held-for-sale, Net, Not Part of Disposal Group [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_LoansReceivableHeldForSaleNetAbstract" xlink:label="loc_us-gaap_LoansReceivableHeldForSaleNetAbstract_3D3BEF18286F0F6908E7AF3C3CA7736F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LoansReceivableHeldForSaleNetAbstract_3D3BEF18286F0F6908E7AF3C3CA7736F" xlink:to="lab_us-gaap_LoansReceivableHeldForSaleNetAbstract_3D3BEF18286F0F6908E7AF3C3CA7736F" xlink:type="arc" />
    <link:label id="lab_us-gaap_LoansReceivableHeldForSaleNetNotPartOfDisposalGroup_0A523C8DE7C0922D20F6AF3C3CA71928_terseLabel_en-US" xlink:label="lab_us-gaap_LoansReceivableHeldForSaleNetNotPartOfDisposalGroup_0A523C8DE7C0922D20F6AF3C3CA71928" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loans held-for-sale</link:label>
    <link:label id="lab_us-gaap_LoansReceivableHeldForSaleNetNotPartOfDisposalGroup_0A523C8DE7C0922D20F6AF3C3CA71928_label_en-US" xlink:label="lab_us-gaap_LoansReceivableHeldForSaleNetNotPartOfDisposalGroup_0A523C8DE7C0922D20F6AF3C3CA71928" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loans Receivable Held-for-sale, Net, Not Part of Disposal Group</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_LoansReceivableHeldForSaleNetNotPartOfDisposalGroup" xlink:label="loc_us-gaap_LoansReceivableHeldForSaleNetNotPartOfDisposalGroup_0A523C8DE7C0922D20F6AF3C3CA71928" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LoansReceivableHeldForSaleNetNotPartOfDisposalGroup_0A523C8DE7C0922D20F6AF3C3CA71928" xlink:to="lab_us-gaap_LoansReceivableHeldForSaleNetNotPartOfDisposalGroup_0A523C8DE7C0922D20F6AF3C3CA71928" xlink:type="arc" />
    <link:label id="lab_us-gaap_TransferOfPortfolioLoansAndLeasesToHeldForSale1_15195A9F1285AB473ED0AF3C3CA76A6D_terseLabel_en-US" xlink:label="lab_us-gaap_TransferOfPortfolioLoansAndLeasesToHeldForSale1_15195A9F1285AB473ED0AF3C3CA76A6D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loans held-for-investment transferred to loans held-for-sale, net</link:label>
    <link:label id="lab_us-gaap_TransferOfPortfolioLoansAndLeasesToHeldForSale1_15195A9F1285AB473ED0AF3C3CA76A6D_label_en-US" xlink:label="lab_us-gaap_TransferOfPortfolioLoansAndLeasesToHeldForSale1_15195A9F1285AB473ED0AF3C3CA76A6D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Transfer of Portfolio Loans and Leases to Held-for-sale</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_TransferOfPortfolioLoansAndLeasesToHeldForSale1" xlink:label="loc_us-gaap_TransferOfPortfolioLoansAndLeasesToHeldForSale1_15195A9F1285AB473ED0AF3C3CA76A6D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_TransferOfPortfolioLoansAndLeasesToHeldForSale1_15195A9F1285AB473ED0AF3C3CA76A6D" xlink:to="lab_us-gaap_TransferOfPortfolioLoansAndLeasesToHeldForSale1_15195A9F1285AB473ED0AF3C3CA76A6D" xlink:type="arc" />
    <link:label id="lab_us-gaap_AllowanceForLoanAndLeaseLossesWriteOffs_AC2D686A3D6C0C52B916AF3C3CA773CD_verboseLabel_en-US" xlink:label="lab_us-gaap_AllowanceForLoanAndLeaseLossesWriteOffs_AC2D686A3D6C0C52B916AF3C3CA773CD" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Write-down of loans transferred from loans held-for-investment to loans held-for-sale recorded to allowance for loan losses</link:label>
    <link:label id="lab_us-gaap_AllowanceForLoanAndLeaseLossesWriteOffs_AC2D686A3D6C0C52B916AF3C3CA773CD_label_en-US" xlink:label="lab_us-gaap_AllowanceForLoanAndLeaseLossesWriteOffs_AC2D686A3D6C0C52B916AF3C3CA773CD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Allowance for Loan and Lease Losses, Write-offs</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AllowanceForLoanAndLeaseLossesWriteOffs" xlink:label="loc_us-gaap_AllowanceForLoanAndLeaseLossesWriteOffs_AC2D686A3D6C0C52B916AF3C3CA773CD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AllowanceForLoanAndLeaseLossesWriteOffs_AC2D686A3D6C0C52B916AF3C3CA773CD" xlink:to="lab_us-gaap_AllowanceForLoanAndLeaseLossesWriteOffs_AC2D686A3D6C0C52B916AF3C3CA773CD" xlink:type="arc" />
    <link:label id="lab_us-gaap_FinancingReceivableSignificantSales_DFC6AE068B8B8966F0DFAF3C3CA70856_terseLabel_en-US" xlink:label="lab_us-gaap_FinancingReceivableSignificantSales_DFC6AE068B8B8966F0DFAF3C3CA70856" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loans sold</link:label>
    <link:label id="lab_us-gaap_FinancingReceivableSignificantSales_DFC6AE068B8B8966F0DFAF3C3CA70856_label_en-US" xlink:label="lab_us-gaap_FinancingReceivableSignificantSales_DFC6AE068B8B8966F0DFAF3C3CA70856" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financing Receivable, Significant Sales</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_FinancingReceivableSignificantSales" xlink:label="loc_us-gaap_FinancingReceivableSignificantSales_DFC6AE068B8B8966F0DFAF3C3CA70856" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinancingReceivableSignificantSales_DFC6AE068B8B8966F0DFAF3C3CA70856" xlink:to="lab_us-gaap_FinancingReceivableSignificantSales_DFC6AE068B8B8966F0DFAF3C3CA70856" xlink:type="arc" />
    <link:label id="lab_us-gaap_GainLossOnSaleOfLoansAndLeases_34DEDBB86C92A5D56A60AF3C3CA81CE3_terseLabel_en-US" xlink:label="lab_us-gaap_GainLossOnSaleOfLoansAndLeases_34DEDBB86C92A5D56A60AF3C3CA81CE3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net gains (losses) from sales of loans held-for-sale during the period</link:label>
    <link:label id="lab_us-gaap_GainLossOnSaleOfLoansAndLeases_34DEDBB86C92A5D56A60AF3C3CA81CE3_label_en-US" xlink:label="lab_us-gaap_GainLossOnSaleOfLoansAndLeases_34DEDBB86C92A5D56A60AF3C3CA81CE3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Gain (Loss) on Sale of Loans and Leases</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_GainLossOnSaleOfLoansAndLeases" xlink:label="loc_us-gaap_GainLossOnSaleOfLoansAndLeases_34DEDBB86C92A5D56A60AF3C3CA81CE3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GainLossOnSaleOfLoansAndLeases_34DEDBB86C92A5D56A60AF3C3CA81CE3" xlink:to="lab_us-gaap_GainLossOnSaleOfLoansAndLeases_34DEDBB86C92A5D56A60AF3C3CA81CE3" xlink:type="arc" />
    <link:label id="lab_us-gaap_SecuritizationFinancialAssetForWhichTransferIsAccountedAsSaleGainLossOnSale_14A63A793685C81CD156AF3C3CA8F02A_terseLabel_en-US" xlink:label="lab_us-gaap_SecuritizationFinancialAssetForWhichTransferIsAccountedAsSaleGainLossOnSale_14A63A793685C81CD156AF3C3CA8F02A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Gain on securitizations</link:label>
    <link:label id="lab_us-gaap_SecuritizationFinancialAssetForWhichTransferIsAccountedAsSaleGainLossOnSale_14A63A793685C81CD156AF3C3CA8F02A_label_en-US" xlink:label="lab_us-gaap_SecuritizationFinancialAssetForWhichTransferIsAccountedAsSaleGainLossOnSale_14A63A793685C81CD156AF3C3CA8F02A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale, Gain (Loss) on Sale</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_SecuritizationFinancialAssetForWhichTransferIsAccountedAsSaleGainLossOnSale" xlink:label="loc_us-gaap_SecuritizationFinancialAssetForWhichTransferIsAccountedAsSaleGainLossOnSale_14A63A793685C81CD156AF3C3CA8F02A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SecuritizationFinancialAssetForWhichTransferIsAccountedAsSaleGainLossOnSale_14A63A793685C81CD156AF3C3CA8F02A" xlink:to="lab_us-gaap_SecuritizationFinancialAssetForWhichTransferIsAccountedAsSaleGainLossOnSale_14A63A793685C81CD156AF3C3CA8F02A" xlink:type="arc" />
    <link:label id="lab_us-gaap_ServicingAssetAtAmortizedValuePeriodIncreaseDecrease_D857F8893D80989F21BBAF3C3CA8CE2F_terseLabel_en-US" xlink:label="lab_us-gaap_ServicingAssetAtAmortizedValuePeriodIncreaseDecrease_D857F8893D80989F21BBAF3C3CA8CE2F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Mortgage servicing rights</link:label>
    <link:label id="lab_us-gaap_ServicingAssetAtAmortizedValuePeriodIncreaseDecrease_D857F8893D80989F21BBAF3C3CA8CE2F_label_en-US" xlink:label="lab_us-gaap_ServicingAssetAtAmortizedValuePeriodIncreaseDecrease_D857F8893D80989F21BBAF3C3CA8CE2F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Servicing Asset at Amortized Cost, Period Increase (Decrease)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ServicingAssetAtAmortizedValuePeriodIncreaseDecrease" xlink:label="loc_us-gaap_ServicingAssetAtAmortizedValuePeriodIncreaseDecrease_D857F8893D80989F21BBAF3C3CA8CE2F" xlink:type="locator" />
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    <link:label id="lab_us-gaap_HeldToMaturitySecurities_6A3B5E98ED6590260EE2AF3C3CA88656_verboseLabel_en-US" xlink:label="lab_us-gaap_HeldToMaturitySecurities_6A3B5E98ED6590260EE2AF3C3CA88656" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Held-to-maturity investment security</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_HeldToMaturitySecurities" xlink:label="loc_us-gaap_HeldToMaturitySecurities_6A3B5E98ED6590260EE2AF3C3CA88656" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_HeldToMaturitySecurities_6A3B5E98ED6590260EE2AF3C3CA88656" xlink:to="lab_us-gaap_HeldToMaturitySecurities_6A3B5E98ED6590260EE2AF3C3CA88656" xlink:type="arc" />
    <link:label id="lab_ewbc_SecuritizationOrAssetBackedFinancingArrangementTransferOfSecuritizedLoans_19D9D17489DF6CA46911AF3C3CA8EB6C_terseLabel_en-US" xlink:label="lab_ewbc_SecuritizationOrAssetBackedFinancingArrangementTransferOfSecuritizedLoans_19D9D17489DF6CA46911AF3C3CA8EB6C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loans securitized</link:label>
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    <link:loc xlink:href="ewbc-20170630.xsd#ewbc_SecuritizationOrAssetBackedFinancingArrangementTransferOfSecuritizedLoans" xlink:label="loc_ewbc_SecuritizationOrAssetBackedFinancingArrangementTransferOfSecuritizedLoans_19D9D17489DF6CA46911AF3C3CA8EB6C" xlink:type="locator" />
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    <link:label id="lab_us-gaap_FinancingReceivableSignificantPurchases_5E52EF619BA39673F7BAAF3C3CA856E5_terseLabel_en-US" xlink:label="lab_us-gaap_FinancingReceivableSignificantPurchases_5E52EF619BA39673F7BAAF3C3CA856E5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loans purchased</link:label>
    <link:label id="lab_us-gaap_FinancingReceivableSignificantPurchases_5E52EF619BA39673F7BAAF3C3CA856E5_label_en-US" xlink:label="lab_us-gaap_FinancingReceivableSignificantPurchases_5E52EF619BA39673F7BAAF3C3CA856E5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financing Receivable, Significant Purchases</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_FinancingReceivableSignificantPurchases" xlink:label="loc_us-gaap_FinancingReceivableSignificantPurchases_5E52EF619BA39673F7BAAF3C3CA856E5" xlink:type="locator" />
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    <link:label id="lab_us-gaap_AssetsFairValueAdjustment_67ED7714C284A7301146AF3C3CA8D26E_terseLabel_en-US" xlink:label="lab_us-gaap_AssetsFairValueAdjustment_67ED7714C284A7301146AF3C3CA8D26E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Lower of cost or fair value adjustment</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AssetsFairValueAdjustment" xlink:label="loc_us-gaap_AssetsFairValueAdjustment_67ED7714C284A7301146AF3C3CA8D26E" xlink:type="locator" />
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    <link:label id="lab_us-gaap_EquityAbstract_04AB363DB2AF6A85D4A2C5F665CBC8FE_label_en-US" xlink:label="lab_us-gaap_EquityAbstract_04AB363DB2AF6A85D4A2C5F665CBC8FE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Equity [Abstract]</link:label>
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    <link:label id="lab_us-gaap_LaborAndRelatedExpense_6BFE5193496027267ABB538010B523F4_label_en-US" xlink:label="lab_us-gaap_LaborAndRelatedExpense_6BFE5193496027267ABB538010B523F4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Labor and Related Expense</link:label>
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    <link:label id="lab_us-gaap_OccupancyNet_C7868F1ED7EAD9B6670B538010B57D19_label_en-US" xlink:label="lab_us-gaap_OccupancyNet_C7868F1ED7EAD9B6670B538010B57D19" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Occupancy, Net</link:label>
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    <link:label id="lab_us-gaap_LegalFees_7644D256F6B8EA5A0C04538010B554F6_label_en-US" xlink:label="lab_us-gaap_LegalFees_7644D256F6B8EA5A0C04538010B554F6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Legal Fees</link:label>
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    <link:label id="lab_ewbc_DepositRelatedExpenses_8B85F1B92DFE37C2A457538010B68EF8_terseLabel_en-US" xlink:label="lab_ewbc_DepositRelatedExpenses_8B85F1B92DFE37C2A457538010B68EF8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deposit related expense</link:label>
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    <link:label id="lab_us-gaap_DerivativeAssetFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection_01498DD0D86F136A3489E5BCC251913C_label_en-US" xlink:label="lab_us-gaap_DerivativeAssetFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection_01498DD0D86F136A3489E5BCC251913C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative Asset, Fair Value, Offset Against Collateral, Net of Not Subject to Master Netting Arrangement, Policy Election</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_DerivativeAssetFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection" xlink:label="loc_us-gaap_DerivativeAssetFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection_01498DD0D86F136A3489E5BCC251913C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeAssetFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection_01498DD0D86F136A3489E5BCC251913C" xlink:to="lab_us-gaap_DerivativeAssetFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection_01498DD0D86F136A3489E5BCC251913C" xlink:type="arc" />
    <link:label id="lab_us-gaap_DerivativeCollateralObligationToReturnCash_7FFEDEBAE836E620D4CAE5BCC251C65E_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeCollateralObligationToReturnCash_7FFEDEBAE836E620D4CAE5BCC251C65E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash collateral received</link:label>
    <link:label id="lab_us-gaap_DerivativeCollateralObligationToReturnCash_7FFEDEBAE836E620D4CAE5BCC251C65E_label_en-US" xlink:label="lab_us-gaap_DerivativeCollateralObligationToReturnCash_7FFEDEBAE836E620D4CAE5BCC251C65E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative, Collateral, Obligation to Return Cash</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_DerivativeCollateralObligationToReturnCash" xlink:label="loc_us-gaap_DerivativeCollateralObligationToReturnCash_7FFEDEBAE836E620D4CAE5BCC251C65E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeCollateralObligationToReturnCash_7FFEDEBAE836E620D4CAE5BCC251C65E" xlink:to="lab_us-gaap_DerivativeCollateralObligationToReturnCash_7FFEDEBAE836E620D4CAE5BCC251C65E" xlink:type="arc" />
    <link:label id="lab_us-gaap_OffsettingDerivativeLiabilitiesAbstract_7C72DB17D10F299AD512E5BCC251B8B5_terseLabel_en-US" xlink:label="lab_us-gaap_OffsettingDerivativeLiabilitiesAbstract_7C72DB17D10F299AD512E5BCC251B8B5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Derivatives Liabilities</link:label>
    <link:label id="lab_us-gaap_OffsettingDerivativeLiabilitiesAbstract_7C72DB17D10F299AD512E5BCC251B8B5_label_en-US" xlink:label="lab_us-gaap_OffsettingDerivativeLiabilitiesAbstract_7C72DB17D10F299AD512E5BCC251B8B5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Offsetting Derivative Liabilities [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_OffsettingDerivativeLiabilitiesAbstract" xlink:label="loc_us-gaap_OffsettingDerivativeLiabilitiesAbstract_7C72DB17D10F299AD512E5BCC251B8B5" xlink:type="locator" />
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    <link:label id="lab_us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement_A4DC57DE1C6F6DE57896E5BCC2518D89_totalLabel_en-US" xlink:label="lab_us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement_A4DC57DE1C6F6DE57896E5BCC2518D89" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Gross Amounts including Contracts Not Subject to Master Netting Arrangement</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement" xlink:label="loc_us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement_A4DC57DE1C6F6DE57896E5BCC2518D89" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement_A4DC57DE1C6F6DE57896E5BCC2518D89" xlink:to="lab_us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement_A4DC57DE1C6F6DE57896E5BCC2518D89" xlink:type="arc" />
    <link:label id="lab_us-gaap_DerivativeLiabilityNotSubjectToMasterNettingArrangement_BFDB5B115DE634537A52E5BCC252E10C_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeLiabilityNotSubjectToMasterNettingArrangement_BFDB5B115DE634537A52E5BCC252E10C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Contracts Not Subject to Master Netting Arrangements</link:label>
    <link:label id="lab_us-gaap_DerivativeLiabilityNotSubjectToMasterNettingArrangement_BFDB5B115DE634537A52E5BCC252E10C_label_en-US" xlink:label="lab_us-gaap_DerivativeLiabilityNotSubjectToMasterNettingArrangement_BFDB5B115DE634537A52E5BCC252E10C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative Liability, Not Subject to Master Netting Arrangement</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_DerivativeLiabilityNotSubjectToMasterNettingArrangement" xlink:label="loc_us-gaap_DerivativeLiabilityNotSubjectToMasterNettingArrangement_BFDB5B115DE634537A52E5BCC252E10C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeLiabilityNotSubjectToMasterNettingArrangement_BFDB5B115DE634537A52E5BCC252E10C" xlink:to="lab_us-gaap_DerivativeLiabilityNotSubjectToMasterNettingArrangement_BFDB5B115DE634537A52E5BCC252E10C" xlink:type="arc" />
    <link:label id="lab_us-gaap_DerivativeFairValueOfDerivativeLiability_C65E7BEA42D704AD68A2E5BCC2526A07_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeFairValueOfDerivativeLiability_C65E7BEA42D704AD68A2E5BCC2526A07" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Gross Amounts</link:label>
    <link:label id="lab_us-gaap_DerivativeFairValueOfDerivativeLiability_C65E7BEA42D704AD68A2E5BCC2526A07_label_en-US" xlink:label="lab_us-gaap_DerivativeFairValueOfDerivativeLiability_C65E7BEA42D704AD68A2E5BCC2526A07" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative Liability, Fair Value, Gross Liability</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeLiability" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeLiability_C65E7BEA42D704AD68A2E5BCC2526A07" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeFairValueOfDerivativeLiability_C65E7BEA42D704AD68A2E5BCC2526A07" xlink:to="lab_us-gaap_DerivativeFairValueOfDerivativeLiability_C65E7BEA42D704AD68A2E5BCC2526A07" xlink:type="arc" />
    <link:label id="lab_us-gaap_DerivativeLiabilityFairValueGrossAsset_8F8ACCE5BB00080B1608E5BCC252F445_negatedLabel_en-US" xlink:label="lab_us-gaap_DerivativeLiabilityFairValueGrossAsset_8F8ACCE5BB00080B1608E5BCC252F445" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Gross Amounts Offset on the Consolidated Balance Sheets</link:label>
    <link:label id="lab_us-gaap_DerivativeLiabilityFairValueGrossAsset_8F8ACCE5BB00080B1608E5BCC252F445_label_en-US" xlink:label="lab_us-gaap_DerivativeLiabilityFairValueGrossAsset_8F8ACCE5BB00080B1608E5BCC252F445" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative Liability, Fair Value, Gross Asset</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_DerivativeLiabilityFairValueGrossAsset" xlink:label="loc_us-gaap_DerivativeLiabilityFairValueGrossAsset_8F8ACCE5BB00080B1608E5BCC252F445" xlink:type="locator" />
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    <link:label id="lab_us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral_D42CC5004F7ED7684E21E5BCC2528443_totalLabel_en-US" xlink:label="lab_us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral_D42CC5004F7ED7684E21E5BCC2528443" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net Amounts Presented on the Consolidated Balance Sheets</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral_D42CC5004F7ED7684E21E5BCC2528443" xlink:type="locator" />
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    <link:label id="lab_ewbc_DerivativeFairValueOfDerivativeLiabilityGrossAmountsNotOffsetAbstract_F9AC5293AE3850922ED8E5BCC2526E17_terseLabel_en-US" xlink:label="lab_ewbc_DerivativeFairValueOfDerivativeLiabilityGrossAmountsNotOffsetAbstract_F9AC5293AE3850922ED8E5BCC2526E17" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Gross Amounts Not Offset on the Consolidated Balance Sheets</link:label>
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    <link:label id="lab_us-gaap_DerivativeLiabilityNotOffsetPolicyElectionDeduction_48EEB34D09519026D2E8E5BCC252DDC2_negatedLabel_en-US" xlink:label="lab_us-gaap_DerivativeLiabilityNotOffsetPolicyElectionDeduction_48EEB34D09519026D2E8E5BCC252DDC2" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Derivative Amount</link:label>
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    <link:label id="lab_ewbc_DerivativeCollateralRightToReclaimCollateral_5714694BA646D0C1272BE5BCC252D354_negatedTerseLabel_en-US" xlink:label="lab_ewbc_DerivativeCollateralRightToReclaimCollateral_5714694BA646D0C1272BE5BCC252D354" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Collateral Posted</link:label>
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    <link:label id="lab_ewbc_DerivativeCollateralRightToReclaimCollateral_5714694BA646D0C1272BE5BCC252D354_documentation_en-US" xlink:label="lab_ewbc_DerivativeCollateralRightToReclaimCollateral_5714694BA646D0C1272BE5BCC252D354" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount of right to receive collateral under master netting agreements that have not been offset against derivative liabilities.</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_DerivativeLiabilityFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection" xlink:label="loc_us-gaap_DerivativeLiabilityFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection_37B3BA580AB687ED4897E5BCC2527E2C" xlink:type="locator" />
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    <link:label id="lab_ewbc_NumberofSegmentToWhichBroadAdministrativeSupportWasProvided_EFBC519A3E8C47FFEB74C02B0EB902A8_terseLabel_en-US" xlink:label="lab_ewbc_NumberofSegmentToWhichBroadAdministrativeSupportWasProvided_EFBC519A3E8C47FFEB74C02B0EB902A8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of segment whom broad administrative support are provided</link:label>
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    <link:label id="lab_ewbc_NumberofSegmentToWhichBroadAdministrativeSupportWasProvided_EFBC519A3E8C47FFEB74C02B0EB902A8_documentation_en-US" xlink:label="lab_ewbc_NumberofSegmentToWhichBroadAdministrativeSupportWasProvided_EFBC519A3E8C47FFEB74C02B0EB902A8" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the number of segments that are provided broad administrative support.</link:label>
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    <link:label id="lab_us-gaap_UnfundedLoanCommitmentMember_CAFCB2FD3B079AD5DE3DB425F09F7B65_terseLabel_en-US" xlink:label="lab_us-gaap_UnfundedLoanCommitmentMember_CAFCB2FD3B079AD5DE3DB425F09F7B65" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Allowance for Unfunded Credit Reserves</link:label>
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    <link:label id="lab_ewbc_AllowanceForUnfundedCreditReservesRollForward_0A0BCBE86888B946BCE1B425F09F2A74_documentation_en-US" xlink:label="lab_ewbc_AllowanceForUnfundedCreditReservesRollForward_0A0BCBE86888B946BCE1B425F09F2A74" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Allowance For Unfunded Credit Reserves [Roll Forward]</link:label>
    <link:loc xlink:href="ewbc-20170630.xsd#ewbc_AllowanceForUnfundedCreditReservesRollForward" xlink:label="loc_ewbc_AllowanceForUnfundedCreditReservesRollForward_0A0BCBE86888B946BCE1B425F09F2A74" xlink:type="locator" />
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    <link:loc xlink:href="ewbc-20170630.xsd#ewbc_AllowanceforUnfundedLoanCommitmentsandLettersofCredit" xlink:label="loc_ewbc_AllowanceforUnfundedLoanCommitmentsandLettersofCredit_490271A351DF9FE524E8B425F09F51F0" xlink:type="locator" />
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    <link:label id="lab_ewbc_AllowanceforUnfundedLoanCommitmentsandLettersofCredit_AB19F82000974B13BB35B425F09F37CA_periodEndLabel_en-US" xlink:label="lab_ewbc_AllowanceforUnfundedLoanCommitmentsandLettersofCredit_AB19F82000974B13BB35B425F09F37CA" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Ending balance</link:label>
    <link:loc xlink:href="ewbc-20170630.xsd#ewbc_AllowanceforUnfundedLoanCommitmentsandLettersofCredit" xlink:label="loc_ewbc_AllowanceforUnfundedLoanCommitmentsandLettersofCredit_AB19F82000974B13BB35B425F09F37CA" xlink:type="locator" />
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    <link:label id="lab_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_4FC332B27543C12C3964C81520A0D425_label_en-US" xlink:label="lab_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_4FC332B27543C12C3964C81520A0D425" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement of Comprehensive Income [Abstract]</link:label>
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    <link:label id="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentAbstract_6A78B00E697408B88501C81520A0FD2C_terseLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentAbstract_6A78B00E697408B88501C81520A0FD2C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other comprehensive income, net of tax:</link:label>
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    <link:label id="lab_us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent_CA5AF1C8D3A91FEE43A4C81520A0C075_terseLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent_CA5AF1C8D3A91FEE43A4C81520A0C075" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net change in unrealized gains on available-for-sale investment securities</link:label>
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    <link:label id="lab_ewbc_LoantoValueRatio_559F2A9F659F7DB803317A451A7A40EE_terseLabel_en-US" xlink:label="lab_ewbc_LoantoValueRatio_559F2A9F659F7DB803317A451A7A40EE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loan-to-value ratio (or less at origination)</link:label>
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    <link:label id="lab_us-gaap_ResidentialRealEstateMember_76352AFB8B0DA38D116FDE28C6541DD0_terseLabel_en-US" xlink:label="lab_us-gaap_ResidentialRealEstateMember_B77F36F1F5E256F1A05381090E1300D2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Residential real estate properties</link:label>
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    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_A20E0011FA4CDD62D85ED0709C592AAD_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_5A99FE61784D59C4936298B79A10BEDC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2018</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_5A99FE61784D59C4936298B79A10BEDC" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_5A99FE61784D59C4936298B79A10BEDC" xlink:type="arc" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost_6745B8692F8659DE9D5564426D65B20C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost_6745B8692F8659DE9D5564426D65B20C" xlink:to="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost_6745B8692F8659DE9D5564426D65B20C" xlink:type="arc" />
    <link:label id="lab_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_516BFACE9D43304F5EF2CB91B44930D5_totalLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_23E4E6AA7894502691E29762665D778C" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total available-for-sale investment securities</link:label>
    <link:label id="lab_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_516BFACE9D43304F5EF2CB91B44930D5_label_en-US" xlink:label="lab_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_23E4E6AA7894502691E29762665D778C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Available-for-sale Debt Securities, Amortized Cost Basis</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_23E4E6AA7894502691E29762665D778C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_23E4E6AA7894502691E29762665D778C" xlink:to="lab_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_23E4E6AA7894502691E29762665D778C" xlink:type="arc" />
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesFairValueAbstract_53B1412F05601B1F14EACB91B4495387_terseLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesFairValueAbstract_52A679383F125BBFA4504B15C1DA67AB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Estimated Fair Value</link:label>
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesFairValueAbstract_53B1412F05601B1F14EACB91B4495387_label_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesFairValueAbstract_52A679383F125BBFA4504B15C1DA67AB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesFairValueAbstract" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesFairValueAbstract_52A679383F125BBFA4504B15C1DA67AB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesFairValueAbstract_52A679383F125BBFA4504B15C1DA67AB" xlink:to="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesFairValueAbstract_52A679383F125BBFA4504B15C1DA67AB" xlink:type="arc" />
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue_7315ABA261B0A6BC44BECB91B4498082_terseLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue_F93B62869A3257CBA92F86747B4F4D25" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Due within one year</link:label>
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue_7315ABA261B0A6BC44BECB91B4498082_label_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue_F93B62869A3257CBA92F86747B4F4D25" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Available-for-sale Securities, Debt Maturities, Next Twelve Months, Fair Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue_F93B62869A3257CBA92F86747B4F4D25" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue_F93B62869A3257CBA92F86747B4F4D25" xlink:to="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue_F93B62869A3257CBA92F86747B4F4D25" xlink:type="arc" />
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    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue_C792BDDDF540FE0DBCFDCB91B449442E_label_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue_E4F30B2D47E1507D82F9313034D39866" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Available-for-sale Securities, Debt Maturities, Year Two Through Five, Fair Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue_E4F30B2D47E1507D82F9313034D39866" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue_E4F30B2D47E1507D82F9313034D39866" xlink:to="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue_E4F30B2D47E1507D82F9313034D39866" xlink:type="arc" />
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue_9B5EBCC60D5F725BDB83CB91B4495EFE_terseLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue_4585AC3235F352F8AD7590F25DF01617" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Due after five years through ten years</link:label>
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue_9B5EBCC60D5F725BDB83CB91B4495EFE_label_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue_4585AC3235F352F8AD7590F25DF01617" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Fair Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue_4585AC3235F352F8AD7590F25DF01617" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue_4585AC3235F352F8AD7590F25DF01617" xlink:to="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue_4585AC3235F352F8AD7590F25DF01617" xlink:type="arc" />
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue_AE78661A17CFF644CB3DCB91B449FB8E_terseLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue_F2F29929FD1652C084A7156638625766" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Due after ten years</link:label>
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue_AE78661A17CFF644CB3DCB91B449FB8E_label_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue_F2F29929FD1652C084A7156638625766" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue_F2F29929FD1652C084A7156638625766" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue_F2F29929FD1652C084A7156638625766" xlink:to="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue_F2F29929FD1652C084A7156638625766" xlink:type="arc" />
    <link:label id="lab_us-gaap_AvailableForSaleSecurities_1E1CCE0EE674EA44F8C9CB91B4493E7D_totalLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecurities_69DBB592EEC9515C86638BA3A8CD12AF" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total available-for-sale investment securities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AvailableForSaleSecurities" xlink:label="loc_us-gaap_AvailableForSaleSecurities_69DBB592EEC9515C86638BA3A8CD12AF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AvailableForSaleSecurities_69DBB592EEC9515C86638BA3A8CD12AF" xlink:to="lab_us-gaap_AvailableForSaleSecurities_69DBB592EEC9515C86638BA3A8CD12AF" xlink:type="arc" />
    <link:label id="lab_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAbstract_5024A041590896C7E3E1CB91B44936CC_terseLabel_en-US" xlink:label="lab_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAbstract_0F17468E4E4D5C7DB08FC1D5EBB0115D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Held-to-maturity investment security</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAbstract_0F17468E4E4D5C7DB08FC1D5EBB0115D" xlink:to="lab_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAbstract_0F17468E4E4D5C7DB08FC1D5EBB0115D" xlink:type="arc" />
    <link:label id="lab_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasisAbstract_C51C9513BE7EA8ECB267CB91B44921FC_terseLabel_en-US" xlink:label="lab_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasisAbstract_1841DCF38CF658018E5A9C300637F32D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amortized Cost</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasisAbstract_1841DCF38CF658018E5A9C300637F32D" xlink:to="lab_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasisAbstract_1841DCF38CF658018E5A9C300637F32D" xlink:type="arc" />
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    <link:label id="lab_us-gaap_ShareBasedCompensation_C04589433E02C8A4AE33B425F30454D9_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensation_C04589433E02C8A4AE33B425F30454D9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Stock-based compensation</link:label>
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    <link:label id="lab_us-gaap_GainLossOnSalesOfLoansNet_C82A403634C764C540BFB425F3042699_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_GainLossOnSalesOfLoansNet_C82A403634C764C540BFB425F3042699" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Net gains on sales of loans</link:label>
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    <link:label id="lab_us-gaap_OtherOperatingActivitiesCashFlowStatement_8C2C5D58B2D858236E95B425F3057203_label_en-US" xlink:label="lab_us-gaap_OtherOperatingActivitiesCashFlowStatement_8C2C5D58B2D858236E95B425F3057203" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Operating Activities, Cash Flow Statement</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_OtherOperatingActivitiesCashFlowStatement" xlink:label="loc_us-gaap_OtherOperatingActivitiesCashFlowStatement_8C2C5D58B2D858236E95B425F3057203" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherOperatingActivitiesCashFlowStatement_8C2C5D58B2D858236E95B425F3057203" xlink:to="lab_us-gaap_OtherOperatingActivitiesCashFlowStatement_8C2C5D58B2D858236E95B425F3057203" xlink:type="arc" />
    <link:label id="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities_93E4F1E94B6BF8704EFEB425F305917A_totalLabel_en-US" xlink:label="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities_93E4F1E94B6BF8704EFEB425F305917A" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total adjustments</link:label>
    <link:label id="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities_93E4F1E94B6BF8704EFEB425F305917A_label_en-US" xlink:label="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities_93E4F1E94B6BF8704EFEB425F305917A" 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</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities" xlink:label="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities_93E4F1E94B6BF8704EFEB425F305917A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities_93E4F1E94B6BF8704EFEB425F305917A" xlink:to="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities_93E4F1E94B6BF8704EFEB425F305917A" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_2F9647203D3F1D1A328FB425F3054CD3_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_2F9647203D3F1D1A328FB425F3054CD3" 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:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_2F9647203D3F1D1A328FB425F3054CD3_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_2F9647203D3F1D1A328FB425F3054CD3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Operating Activities, Continuing Operations</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_2F9647203D3F1D1A328FB425F3054CD3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_2F9647203D3F1D1A328FB425F3054CD3" xlink:to="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_2F9647203D3F1D1A328FB425F3054CD3" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_1729E30C95F93A16383CB425F3050F09_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_1729E30C95F93A16383CB425F3050F09" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">CASH FLOWS FROM INVESTING ACTIVITIES</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_1729E30C95F93A16383CB425F3050F09_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_1729E30C95F93A16383CB425F3050F09" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_1729E30C95F93A16383CB425F3050F09" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_1729E30C95F93A16383CB425F3050F09" xlink:to="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_1729E30C95F93A16383CB425F3050F09" xlink:type="arc" />
    <link:label id="lab_ewbc_NetIncreaseDecreaseInAbstract_A76503B434748A02FF03B425F3055192_terseLabel_en-US" xlink:label="lab_ewbc_NetIncreaseDecreaseInAbstract_A76503B434748A02FF03B425F3055192" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net (increase) decrease in:</link:label>
    <link:label id="lab_ewbc_NetIncreaseDecreaseInAbstract_A76503B434748A02FF03B425F3055192_label_en-US" xlink:label="lab_ewbc_NetIncreaseDecreaseInAbstract_A76503B434748A02FF03B425F3055192" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Increase (Decrease) in [Abstract]</link:label>
    <link:label id="lab_ewbc_NetIncreaseDecreaseInAbstract_A76503B434748A02FF03B425F3055192_documentation_en-US" xlink:label="lab_ewbc_NetIncreaseDecreaseInAbstract_A76503B434748A02FF03B425F3055192" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">abstract</link:label>
    <link:loc xlink:href="ewbc-20170630.xsd#ewbc_NetIncreaseDecreaseInAbstract" xlink:label="loc_ewbc_NetIncreaseDecreaseInAbstract_A76503B434748A02FF03B425F3055192" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ewbc_NetIncreaseDecreaseInAbstract_A76503B434748A02FF03B425F3055192" xlink:to="lab_ewbc_NetIncreaseDecreaseInAbstract_A76503B434748A02FF03B425F3055192" xlink:type="arc" />
    <link:label id="lab_us-gaap_PaymentsForProceedsFromLoansAndLeases_E45C229C4F05EA3BE3E0B425F3051C7E_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsForProceedsFromLoansAndLeases_E45C229C4F05EA3BE3E0B425F3051C7E" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Loans held-for-investment</link:label>
    <link:label id="lab_us-gaap_PaymentsForProceedsFromLoansAndLeases_E45C229C4F05EA3BE3E0B425F3051C7E_label_en-US" xlink:label="lab_us-gaap_PaymentsForProceedsFromLoansAndLeases_E45C229C4F05EA3BE3E0B425F3051C7E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments for (Proceeds from) Loans and Leases</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_PaymentsForProceedsFromLoansAndLeases" xlink:label="loc_us-gaap_PaymentsForProceedsFromLoansAndLeases_E45C229C4F05EA3BE3E0B425F3051C7E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsForProceedsFromLoansAndLeases_E45C229C4F05EA3BE3E0B425F3051C7E" xlink:to="lab_us-gaap_PaymentsForProceedsFromLoansAndLeases_E45C229C4F05EA3BE3E0B425F3051C7E" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProceedsFromPaymentsForInInterestBearingDepositsInBanks_45F2664A027AB8AF792FB425F30697CB_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromPaymentsForInInterestBearingDepositsInBanks_45F2664A027AB8AF792FB425F30697CB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Interest-bearing deposits with banks</link:label>
    <link:label id="lab_us-gaap_ProceedsFromPaymentsForInInterestBearingDepositsInBanks_45F2664A027AB8AF792FB425F30697CB_label_en-US" xlink:label="lab_us-gaap_ProceedsFromPaymentsForInInterestBearingDepositsInBanks_45F2664A027AB8AF792FB425F30697CB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from (Payments for) in Interest-bearing Deposits in Banks</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ProceedsFromPaymentsForInInterestBearingDepositsInBanks" xlink:label="loc_us-gaap_ProceedsFromPaymentsForInInterestBearingDepositsInBanks_45F2664A027AB8AF792FB425F30697CB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromPaymentsForInInterestBearingDepositsInBanks_45F2664A027AB8AF792FB425F30697CB" xlink:to="lab_us-gaap_ProceedsFromPaymentsForInInterestBearingDepositsInBanks_45F2664A027AB8AF792FB425F30697CB" xlink:type="arc" />
    <link:label id="lab_ewbc_PaymentsforProceedsfromQualifiedAffordableHousingPartnershipsandOtherTaxCreditInvestments_D95F8C5C08A57B537A42B425F306C1FB_negatedTerseLabel_en-US" xlink:label="lab_ewbc_PaymentsforProceedsfromQualifiedAffordableHousingPartnershipsandOtherTaxCreditInvestments_D95F8C5C08A57B537A42B425F306C1FB" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Investments in qualified affordable housing partnerships, tax credit and other investments, net</link:label>
    <link:label id="lab_ewbc_PaymentsforProceedsfromQualifiedAffordableHousingPartnershipsandOtherTaxCreditInvestments_D95F8C5C08A57B537A42B425F306C1FB_label_en-US" xlink:label="lab_ewbc_PaymentsforProceedsfromQualifiedAffordableHousingPartnershipsandOtherTaxCreditInvestments_D95F8C5C08A57B537A42B425F306C1FB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments for (Proceeds from) Qualified Affordable Housing Partnerships and Other Tax Credit Investments</link:label>
    <link:label id="lab_ewbc_PaymentsforProceedsfromQualifiedAffordableHousingPartnershipsandOtherTaxCreditInvestments_D95F8C5C08A57B537A42B425F306C1FB_documentation_en-US" xlink:label="lab_ewbc_PaymentsforProceedsfromQualifiedAffordableHousingPartnershipsandOtherTaxCreditInvestments_D95F8C5C08A57B537A42B425F306C1FB" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The net cash outflow or inflow for the increase (decrease) in investments in qualified affordable housing partnerships and other investments that qualify for Community Reinvestment Act (CRA) credits or other types of tax credits.</link:label>
    <link:loc xlink:href="ewbc-20170630.xsd#ewbc_PaymentsforProceedsfromQualifiedAffordableHousingPartnershipsandOtherTaxCreditInvestments" xlink:label="loc_ewbc_PaymentsforProceedsfromQualifiedAffordableHousingPartnershipsandOtherTaxCreditInvestments_D95F8C5C08A57B537A42B425F306C1FB" xlink:type="locator" />
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    <link:label id="lab_us-gaap_PaymentsToAcquireInvestmentsAbstract_F1D9710E3BA1FA9986B5B425F306179E_terseLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireInvestmentsAbstract_F1D9710E3BA1FA9986B5B425F306179E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Purchases of:</link:label>
    <link:label id="lab_us-gaap_PaymentsToAcquireInvestmentsAbstract_F1D9710E3BA1FA9986B5B425F306179E_label_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireInvestmentsAbstract_F1D9710E3BA1FA9986B5B425F306179E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments to Acquire Investments [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_PaymentsToAcquireInvestmentsAbstract" xlink:label="loc_us-gaap_PaymentsToAcquireInvestmentsAbstract_F1D9710E3BA1FA9986B5B425F306179E" xlink:type="locator" />
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    <link:label id="lab_us-gaap_PaymentsForSecuritiesPurchasedUnderAgreementsToResell_356910F78B84006E04AEB425F306F0CE_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsForSecuritiesPurchasedUnderAgreementsToResell_356910F78B84006E04AEB425F306F0CE" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Resale agreements</link:label>
    <link:label id="lab_us-gaap_PaymentsForSecuritiesPurchasedUnderAgreementsToResell_356910F78B84006E04AEB425F306F0CE_label_en-US" xlink:label="lab_us-gaap_PaymentsForSecuritiesPurchasedUnderAgreementsToResell_356910F78B84006E04AEB425F306F0CE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments for Securities Purchased under Agreements to Resell</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_PaymentsForSecuritiesPurchasedUnderAgreementsToResell" xlink:label="loc_us-gaap_PaymentsForSecuritiesPurchasedUnderAgreementsToResell_356910F78B84006E04AEB425F306F0CE" xlink:type="locator" />
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    <link:label id="lab_us-gaap_PaymentsToAcquireAvailableForSaleSecurities_8E6D6941B31041185783B425F306A539_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireAvailableForSaleSecurities_8E6D6941B31041185783B425F306A539" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Available-for-sale investment securities</link:label>
    <link:label id="lab_us-gaap_PaymentsToAcquireAvailableForSaleSecurities_8E6D6941B31041185783B425F306A539_label_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireAvailableForSaleSecurities_8E6D6941B31041185783B425F306A539" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments to Acquire Available-for-sale Securities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_PaymentsToAcquireAvailableForSaleSecurities" xlink:label="loc_us-gaap_PaymentsToAcquireAvailableForSaleSecurities_8E6D6941B31041185783B425F306A539" xlink:type="locator" />
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    <link:label id="lab_us-gaap_PaymentsToAcquireLoansReceivable_DE6837ED59704BA0757AB425F3061120_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireLoansReceivable_DE6837ED59704BA0757AB425F3061120" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Loans held-for-investment</link:label>
    <link:label id="lab_us-gaap_PaymentsToAcquireLoansReceivable_DE6837ED59704BA0757AB425F3061120_label_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireLoansReceivable_DE6837ED59704BA0757AB425F3061120" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments to Acquire Loans Receivable</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_PaymentsToAcquireLoansReceivable" xlink:label="loc_us-gaap_PaymentsToAcquireLoansReceivable_DE6837ED59704BA0757AB425F3061120" xlink:type="locator" />
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    <link:label id="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_77888AC32DF39232362AB425F30633E7_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_77888AC32DF39232362AB425F30633E7" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Premises and equipment</link:label>
    <link:label id="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_77888AC32DF39232362AB425F30633E7_label_en-US" xlink:label="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_77888AC32DF39232362AB425F30633E7" 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/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_77888AC32DF39232362AB425F30633E7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_77888AC32DF39232362AB425F30633E7" xlink:to="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_77888AC32DF39232362AB425F30633E7" xlink:type="arc" />
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    <link:label id="lab_us-gaap_ComprehensiveIncomeNoteTextBlock_CB9BFF5E6F9CC7B36421CB91B1C6AB9D_terseLabel_en-US" xlink:label="lab_us-gaap_ComprehensiveIncomeNoteTextBlock_8AD17AA820F05AF888D71AF3337121D4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accumulated Other Comprehensive Income (Loss)</link:label>
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    <link:label id="lab_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_3608AD0D24CF43108A8DA41E20C27C8A_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_3608AD0D24CF43108A8DA41E20C27C8A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of carrying amounts and fair values of the Company's financial instruments</link:label>
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    <link:label id="lab_us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract_C9F2494962BC095C836CA41E20C2666A_terseLabel_en-US" xlink:label="lab_us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract_C9F2494962BC095C836CA41E20C2666A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financial assets:</link:label>
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    <link:label id="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_E2AB65550C74C4FC79A7A41E20C27D17_terseLabel_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_E2AB65550C74C4FC79A7A41E20C27D17" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash and cash equivalents</link:label>
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    <link:label id="lab_us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract_A917E5124BF72549D58DA41E20C25A8C_terseLabel_en-US" xlink:label="lab_us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract_A917E5124BF72549D58DA41E20C25A8C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financial liabilities:</link:label>
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    <link:label id="lab_us-gaap_DepositsByTypeAbstract_37FBB57B9C3F1DE43BD4A41E20C2EBE2_terseLabel_en-US" xlink:label="lab_us-gaap_DepositsByTypeAbstract_37FBB57B9C3F1DE43BD4A41E20C2EBE2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Customer deposits:</link:label>
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