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        <link:definition>0512 - Disclosure - Comprehensive Income (Tables)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:roleType roleURI="http://chubb.com/role/ReinsuranceDetails" id="ReinsuranceDetails">
        <link:definition>0609 - Disclosure - Reinsurance (Details)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:roleType roleURI="http://chubb.com/role/ReinsuranceTables" id="ReinsuranceTables">
        <link:definition>0509 - Disclosure - Reinsurance (Tables)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:roleType roleURI="http://chubb.com/role/ComprehensiveIncome" id="ComprehensiveIncome">
        <link:definition>0212 - Disclosure - Comprehensive Income</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:roleType roleURI="http://chubb.com/role/Reinsurance" id="Reinsurance">
        <link:definition>0209 - Disclosure - Reinsurance</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:roleType roleURI="http://chubb.com/role/SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesSchedule" id="SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesSchedule">
        <link:definition>0701 - Schedule - Consolidated Summary of Investments Other Than Investments in Related Parties (Schedule)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:roleType roleURI="http://chubb.com/role/EmployeeBenefits" id="EmployeeBenefits">
        <link:definition>0211 - Disclosure - Employee Benefits</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:roleType roleURI="http://chubb.com/role/StockBasedEmployeeCompensationPlansDetails" id="StockBasedEmployeeCompensationPlansDetails">
        <link:definition>0610 - Disclosure - Stock Based Employee Compensation Plans (Details)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:roleType roleURI="http://chubb.com/role/StockBasedEmployeeCompensationPlans" id="StockBasedEmployeeCompensationPlans">
        <link:definition>0210 - Disclosure - Stock Based Employee Compensation Plans</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://chubb.com/role/EmployeeBenefitsDetails" id="EmployeeBenefitsDetails">
        <link:definition>0611 - Disclosure - Employee Benefits (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://chubb.com/role/EmployeeBenefitsTables" id="EmployeeBenefitsTables">
        <link:definition>0511 - Disclosure - Employee Benefits (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:roleType roleURI="http://chubb.com/role/DebtAndCreditArrangementsDetails" id="DebtAndCreditArrangementsDetails">
        <link:definition>0607 - Disclosure - Debt and Credit Arrangements (Details)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://chubb.com/role/DeferredPolicyAcquisitionCostsDetails" id="DeferredPolicyAcquisitionCostsDetails">
        <link:definition>0604 - Disclosure - Deferred Policy Acquisition Costs (Details)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:roleType roleURI="http://chubb.com/role/DebtAndCreditArrangementsTables" id="DebtAndCreditArrangementsTables">
        <link:definition>0507 - Disclosure - Debt and Credit Arrangements (Tables)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:roleType roleURI="http://chubb.com/role/DebtAndCreditArrangements" id="DebtAndCreditArrangements">
        <link:definition>0207 - Disclosure - Debt and Credit Arrangements</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:roleType roleURI="http://chubb.com/role/DeferredPolicyAcquisitionCostsTables" id="DeferredPolicyAcquisitionCostsTables">
        <link:definition>0504 - Disclosure - Deferred Policy Acquisition Costs (Tables)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:roleType roleURI="http://chubb.com/role/DeferredPolicyAcquisitionCosts" id="DeferredPolicyAcquisitionCosts">
        <link:definition>0204 - Disclosure - Deferred Policy Acquisition Costs</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:roleType roleURI="http://chubb.com/role/QuarterlyFinancialData" id="QuarterlyFinancialData">
        <link:definition>0218 - Disclosure - Quarterly Financial Data</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:roleType roleURI="http://chubb.com/role/SupplementaryInsuranceInformation" id="SupplementaryInsuranceInformation">
        <link:definition>0303 - Schedule - Consolidated Supplementary Insurance Information</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:roleType roleURI="http://chubb.com/role/FinancialInformationOfRegistrant" id="FinancialInformationOfRegistrant">
        <link:definition>0302 - Schedule - Condensed Financial Information of Parent Company</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:roleType roleURI="http://chubb.com/role/SummaryOfInvestmentsOtherThanInvestmentsInRelatedParties" id="SummaryOfInvestmentsOtherThanInvestmentsInRelatedParties">
        <link:definition>0301 - Schedule - Consolidated Summary of Investments - Other Than Investments In Related Parties</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://chubb.com/role/DocumentAndEntityInformation" id="DocumentAndEntityInformation">
        <link:definition>00 - Document - Document and Entity Information</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:roleType roleURI="http://chubb.com/role/FederalAndForeignIncomeTaxTables" id="FederalAndForeignIncomeTaxTables">
        <link:definition>0508 - Disclosure - Federal and Foreign Income Tax (Tables)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://chubb.com/role/FederalAndForeignIncomeTaxDetails" id="FederalAndForeignIncomeTaxDetails">
        <link:definition>0608 - Disclosure - Federal and Foreign Income Tax (Details)</link:definition>
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      <link:roleType roleURI="http://chubb.com/role/UnpaidLossesAndLossExpensesTables" id="UnpaidLossesAndLossExpensesTables">
        <link:definition>0506 - Disclosure - Unpaid Losses and Loss Expenses (Tables)</link:definition>
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      <link:roleType roleURI="http://chubb.com/role/UnpaidLossesAndLossExpensesDetails" id="UnpaidLossesAndLossExpensesDetails">
        <link:definition>0606 - Disclosure - Unpaid Losses and Loss Expenses (Details)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
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        <link:definition>0617 - Disclosure - Shareholders' Equity (Details)</link:definition>
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      <link:roleType roleURI="http://chubb.com/role/ShareholdersEquityTables" id="ShareholdersEquityTables">
        <link:definition>0517 - Disclosure - Shareholders' Equity (Tables)</link:definition>
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        <link:definition>0605 - Disclosure - Property and equipment (Details)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:roleType roleURI="http://chubb.com/role/PropertyAndEquipmentTables" id="PropertyAndEquipmentTables">
        <link:definition>0505 - Disclosure - Property and Equipment (Tables)</link:definition>
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        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:roleType roleURI="http://chubb.com/role/ShareholdersEquity" id="ShareholdersEquity">
        <link:definition>0217 - Disclosure - Shareholders' Equity</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:roleType roleURI="http://chubb.com/role/FederalAndForeignIncomeTax" id="FederalAndForeignIncomeTax">
        <link:definition>0208 - Disclosure - Federal and Foreign Income Tax</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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        <link:definition>0206 - Disclosure - Unpaid Losses and Loss Expenses</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://chubb.com/role/PropertyAndEquipment" id="PropertyAndEquipment">
        <link:definition>0205 - Disclosure - Property and Equipment</link:definition>
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        <link:usedOn>link:definitionLink</link:usedOn>
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