Exhibit 99.1
 (HUBB LOGO)
    
    News fromThe Chubb CorporationThe Chubb Corporation
15 Mountain View Road  P.O. Box 1615
Warren, New Jersey 07061-1615
Telephone: 908-903-2000
 FOR IMMEDIATE RELEASE
 Chubb Reports Second Quarter Net Income per Share of $1.42;
Operating Income per Share Is $1.27;
Combined Ratio Is 94.9% including Catastrophe Impact of 11.3 Points
 
 2011 Operating Income per Share Guidance Is Increased
To Range of $5.55 to $5.85




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2       Six-Month Results




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3        Outlook for 2011




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4   
    
    A 4% to 6% increase in net written premiums, including a 1% positive impact of
foreign currency translation based on exchange rates as of June 30, 2011.
    
    A combined ratio between 92% and 94%.
    
    Approximately flat property and casualty investment income after taxes.
    
    Approximately 291 million average diluted shares outstanding for the year.
  Second Quarter Operations Review
 Chubb Personal Insurance
  Chubb Commercial Insurance




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5 Chubb Specialty Insurance
   Webcast Conference Call to be held Today at 5 P.M.
 st http://www.chubb.com
 About Chubb
  http://www.chubb.com
  For further information contact:
    
    Investors:
    
    Glenn A. Montgomery
(908) 903-2365Media:
    
    Mark E. Greenberg
(908) 903-2682




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6 Definitions of Key Terms
 Operating Income
 Underwriting Income (Loss)
  Property and Casualty Investment Income After Income Tax
 Book Value per Common Share with Available-for-Sale Fixed Maturities at Amortized Cost
 Combined Loss and Expense Ratio or Combined Ratio
 Net Written Premiums Growth (Decrease) Excluding the Impact of Currency Fluctuation .




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7 FORWARD-LOOKING INFORMATION
  
    
    global political conditions and the occurrence of terrorist attacks, including any nuclear,
biological, chemical or radiological events;
    
    the effects of the outbreak or escalation of war or hostilities;
    
    premium pricing and profitability or growth estimates overall or by lines of business or
geographic area, and related expectations with respect to the timing and terms of any required
regulatory approvals;
    
    adverse changes in loss cost trends;
    
    our ability to retain existing business and attract new business;
    
    our expectations with respect to cash flow and investment income and with respect to other
income;
    
    the adequacy of our loss reserves, including:
 
    
    our expectations relating to reinsurance recoverables;
    
    the willingness of parties, including us, to settle disputes;
    
    developments in judicial decisions or regulatory or legislative
actions relating to coverage and liability, in particular, for
asbestos, toxic waste and other mass tort claims;
    
    development of new theories of liability;
    
    our estimates relating to ultimate asbestos liabilities;
    
    the impact from the bankruptcy protection sought by various asbestos
producers and other related businesses; and
    
    the effects of proposed asbestos liability legislation, including the
impact of claims patterns arising from the possibility of legislation
and those that may arise if legislation is not passed;
 
    
    the availability and cost of reinsurance coverage;
    
    the occurrence of significant weather-related or other natural or human-made disasters,
particularly in locations where we have concentrations of risk, or changes to our estimates of
our potential exposure to such events;




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8 
 
    
    the impact of economic factors on companies on whose behalf we have issued surety bonds,
and in particular, on those companies that file for bankruptcy or otherwise experience
deterioration in creditworthiness;
    
    the effects of disclosures by, and investigations of, companies relating to possible
accounting irregularities, practices in the financial services industry, investment losses or
other corporate governance issues, including:
 
    
    claims and litigation arising out of stock option backdating, spring loading
and other equity grant practices by public companies;
    
    the effects on the capital markets and the markets for directors and officers and
errors and omissions insurance;
    
    claims and litigation arising out of actual or alleged accounting or other
corporate malfeasance by other companies;
    
    claims and litigation arising out of practices in the financial services industry;
    
    claims and litigation relating to uncertainty in the credit and broader financial
markets; and
    
    legislative or regulatory proposals or changes;
 
    
    the effects of changes in market practices in the U.S. property and casualty insurance
industry arising from any legal or regulatory proceedings, related settlements and industry
reform, including changes that have been announced and changes that may occur in the future;
    
    the impact of legislative, regulatory and similar developments on our business, including
those relating to terrorism, catastrophes, the financial markets, solvency standards, capital
requirements and accounting guidance;
    
    any downgrade in our claims-paying, financial strength or other credit ratings;
    
    the ability of our subsidiaries to pay us dividends;
    
    general political, economic and market conditions, whether globally or in the markets in
which we operate, including:
 
    
    changes in interest rates, market credit spreads and the performance
of the financial markets;
    
    currency fluctuations;
    
    the effects of inflation;
    
    changes in domestic and foreign laws, regulations and taxes;
    
    changes in competition and pricing environments;
    
    regional or general changes in asset valuations;
    
    the inability to reinsure certain risks economically; and
    
    changes in the litigation environment;
 
    
    our ability to implement managements strategic plans and initiatives.




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9 THE CHUBB CORPORATION
 SUPPLEMENTARY FINANCIAL DATA
 Periods Ended June 30Second Quarter
    
    
    Six Months2011
    
    
    2010
    
    
    2011
    
    
    2010(in millions)PROPERTY AND CASUALTY INSURANCEUnderwritingNet Premiums Written
    
    $
    3,055
    
    
    $
    2,886
    
    
    $
    5,914
    
    
    $
    5,651Increase in Unearned Premiums
    
    
    (142
    )
    
    
    (87
    )
    
    
    (147
    )
    
    
    (70
    )Premiums Earned
    
    
    2,913
    
    
    
    2,799
    
    
    
    5,767
    
    
    
    5,581Losses and Loss Expenses
    
    
    1,847
    
    
    
    1,660
    
    
    
    3,612
    
    
    
    3,390Operating Costs and Expenses
    
    
    955
    
    
    
    889
    
    
    
    1,859
    
    
    
    1,751Increase in Deferred Policy Acquisition Costs
    
    
    (32
    )
    
    
    (21
    )
    
    
    (57
    )
    
    
    (43
    )Dividends to Policyholders
    
    
    8
    
    
    
    8
    
    
    
    16
    
    
    
    16Underwriting Income
    
    
    135
    
    
    
    263
    
    
    
    337
    
    
    
    467InvestmentsInvestment Income Before Expenses
    
    
    405
    
    
    
    393
    
    
    
    796
    
    
    
    789Investment Expenses
    
    
    11
    
    
    
    8
    
    
    
    21
    
    
    
    17Investment Income
    
    
    394
    
    
    
    385
    
    
    
    775
    
    
    
    772Other Income (Charges)
    
    
    11
    
    
    
    4
    
    
    
    16
    
    
    
    (3
    )Property and Casualty Income
    
    
    540
    
    
    
    652
    
    
    
    1,128
    
    
    
    1,236CORPORATE AND OTHER
    
    
    (63
    )
    
    
    (40
    )
    
    
    (126
    )
    
    
    (103
    )CONSOLIDATED OPERATING INCOME BEFORE INCOME TAX
    
    
    477
    
    
    
    612
    
    
    
    1,002
    
    
    
    1,133Federal and Foreign Income Tax
    
    
    103
    
    
    
    152
    
    
    
    223
    
    
    
    292CONSOLIDATED OPERATING INCOME
    
    
    374
    
    
    
    460
    
    
    
    779
    
    
    
    841REALIZED INVESTMENT GAINS AFTER INCOME TAX
    
    
    45
    
    
    
    58
    
    
    
    149
    
    
    
    141CONSOLIDATED NET INCOME
    
    $
    419
    
    
    $
    518
    
    
    $
    928
    
    
    $
    982PROPERTY AND CASUALTY INVESTMENT INCOME AFTER INCOME TAX
    
    $
    318
    
    
    $
    311
    
    
    $
    628
    
    
    $
    624




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10 Periods Ended June 30Second Quarter
    
    
    Six Months2011
    
    
    2010
    
    
    2011
    
    
    2010OUTSTANDING SHARE DATA(in millions)Average Common and Potentially Dilutive Shares
    
    
    295.4
    
    
    
    326.7
    
    
    
    297.7
    
    
    
    330.8Actual Common Shares at End of Period
    
    
    285.9
    
    
    
    314.5
    
    
    
    285.9
    
    
    
    314.5DILUTED EARNINGS PER SHARE DATAOperating Income
    
    $
    1.27
    
    
    $
    1.41
    
    
    $
    2.62
    
    
    $
    2.54Realized Investment Gains
    
    
    .15
    
    
    
    .18
    
    
    
    .50
    
    
    
    .43Net Income
    
    $
    1.42
    
    
    $
    1.59
    
    
    $
    3.12
    
    
    $
    2.97Effect of Catastrophes
    
    $
    (.72
    )
    
    $
    (.38
    )
    
    $
    (1.31
    )
    
    $
    (1.06
    )
 June 30
    
    
    Dec. 31
    
    
    June 302011
    
    
    2010
    
    
    2010BOOK VALUE PER COMMON SHARE
    
    $
    55.23
    
    
    $
    52.24
    
    
    $
    49.39BOOK VALUE PER COMMON SHARE,with Available-for-Sale Fixed
Maturities at Amortized Cost
    
    
    51.34
    
    
    
    49.05
    
    
    
    45.61
 PROPERTY AND CASUALTY UNDERWRITING RATIOS
 Second Quarter
    
    
    Six Months2011
    
    
    2010
    
    
    2011
    
    
    2010Losses and Loss Expenses to Premiums Earned
    
    
    63.6
    %
    
    
    59.5
    %
    
    
    62.8
    %
    
    
    60.9
    %Underwriting Expenses to Premiums Written
    
    
    31.3
    
    
    
    30.9
    
    
    
    31.5
    
    
    
    31.1Combined Loss and Expense Ratio
    
    
    94.9
    %
    
    
    90.4
    %
    
    
    94.3
    %
    
    
    92.0
    %Effect of Catastrophes on Combined Loss
and Expense Ratio
    
    
    11.3
    %
    
    
    6.9
    %
    
    
    10.4
    %
    
    
    9.6
    %
 PROPERTY AND CASUALTY LOSSES AND LOSS EXPENSES COMPONENTS
 Second Quarter
    
    
    Six Months2011
    
    
    2010
    
    
    2011
    
    
    2010(in millions)Paid Losses and Loss Expenses
    
    $
    1,743
    
    
    $
    1,686
    
    
    $
    3,210
    
    
    $
    3,118Increase (Decrease) in Unpaid
Losses and Loss Expenses
    
    
    104
    
    
    
    (26
    )
    
    
    402
    
    
    
    272Total Losses and Loss Expenses
    
    $
    1,847
    
    
    $
    1,660
    
    
    $
    3,612
    
    
    $
    3,390




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11 PROPERTY AND CASUALTY PRODUCT MIX
 Net Premiums Written
    
    
    Combined Loss and% Increase
    
    
    Expense Ratios2011
    
    
    2010
    
    
    (Decrease)
    
    
    2011
    
    
    2010(in millions)SIX MONTHS ENDED JUNE 30Personal InsuranceAutomobile
    
    $
    343
    
    
    $
    314
    
    
    
    9
    %
    
    
    92.4
    %
    
    
    90.8
    %Homeowners
    
    
    1,214
    
    
    
    1,164
    
    
    
    4
    
    
    
    96.1
    
    
    
    103.8Other
    
    
    400
    
    
    
    404
    
    
    
    (1
    )
    
    
    95.4
    
    
    
    88.9Total Personal
    
    
    1,957
    
    
    
    1,882
    
    
    
    4
    
    
    
    95.3
    
    
    
    98.6Commercial InsuranceMultiple Peril
    
    
    562
    
    
    
    540
    
    
    
    4
    
    
    
    114.1
    
    
    
    103.6Casualty
    
    
    855
    
    
    
    812
    
    
    
    5
    
    
    
    83.7
    
    
    
    89.7Workers Compensation
    
    
    463
    
    
    
    409
    
    
    
    13
    
    
    
    91.8
    
    
    
    90.8Property and Marine
    
    
    756
    
    
    
    691
    
    
    
    9
    
    
    
    119.1
    
    
    
    90.8Total Commercial
    
    
    2,636
    
    
    
    2,452
    
    
    
    8
    
    
    
    101.6
    
    
    
    93.4Specialty InsuranceProfessional Liability
    
    
    1,146
    
    
    
    1,153
    
    
    
    (1
    )
    
    
    85.6
    
    
    
    86.7Surety
    
    
    173
    
    
    
    159
    
    
    
    9
    
    
    
    47.5
    
    
    
    43.9Total Specialty
    
    
    1,319
    
    
    
    1,312
    
    
    
    1
    
    
    
    81.2
    
    
    
    81.7Total Insurance
    
    
    5,912
    
    
    
    5,646
    
    
    
    5
    
    
    
    94.6
    
    
    
    92.2Reinsurance Assumed
    
    
    2
    
    
    
    5
    
    
    
    *
    
    
    
    *
    
    
    
    *Total
    
    $
    5,914
    
    
    $
    5,651
    
    
    
    5
    
    
    
    94.3
    
    
    
    92.0QUARTERS ENDED JUNE 30Personal InsuranceAutomobile
    
    $
    181
    
    
    $
    168
    
    
    
    8
    %
    
    
    92.0
    %
    
    
    90.2
    %Homeowners
    
    
    681
    
    
    
    647
    
    
    
    5
    
    
    
    97.7
    
    
    
    94.5Other
    
    
    201
    
    
    
    193
    
    
    
    4
    
    
    
    98.6
    
    
    
    90.5Total Personal
    
    
    1,063
    
    
    
    1,008
    
    
    
    5
    
    
    
    96.9
    
    
    
    92.9Commercial InsuranceMultiple Peril
    
    
    295
    
    
    
    286
    
    
    
    3
    
    
    
    122.2
    
    
    
    95.2Casualty
    
    
    419
    
    
    
    398
    
    
    
    5
    
    
    
    84.0
    
    
    
    91.0Workers Compensation
    
    
    220
    
    
    
    187
    
    
    
    18
    
    
    
    93.9
    
    
    
    91.5Property and Marine
    
    
    376
    
    
    
    338
    
    
    
    11
    
    
    
    113.2
    
    
    
    93.9Total Commercial
    
    
    1,310
    
    
    
    1,209
    
    
    
    8
    
    
    
    102.5
    
    
    
    92.9Specialty InsuranceProfessional Liability
    
    
    595
    
    
    
    583
    
    
    
    2
    
    
    
    84.6
    
    
    
    87.2Surety
    
    
    85
    
    
    
    83
    
    
    
    2
    
    
    
    44.5
    
    
    
    47.7Total Specialty
    
    
    680
    
    
    
    666
    
    
    
    2
    
    
    
    80.0
    
    
    
    82.5Total Insurance
    
    
    3,053
    
    
    
    2,883
    
    
    
    6
    
    
    
    95.3
    
    
    
    90.4Reinsurance Assumed
    
    
    2
    
    
    
    3
    
    
    
    *
    
    
    
    *
    
    
    
    *Total
    
    $
    3,055
    
    
    $
    2,886
    
    
    
    6
    
    
    
    94.9
    
    
    
    90.4
 
 *
    
    The change in net premiums written and the combined loss and expense ratios are no
longer presented for Reinsurance Assumed since this business is in run-off.