In Wisconsin, all companies writing worker's compensation insurance must be members of the Wisconsin Compensation Rating Bureau (Bureau). The following is the 2004 list of Bureau membership.

Use your particular browser's "Find. . ." capability or the alphabetic links below to help locate the company you are interested in.

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1ST AUTO & CASUALTY INS CO
ACCEPTANCE CASUALTY INS CO
ACCEPTANCE INSURANCE CO
ACCIDENT FUND INSURANCE CO OF AMERICA
ACE AMERICA INSURANCE CO
ACE FIRE UNDERWRITERS INS CO
ACE INDEMNITY INS CO
ACE PROPERTY & CASUALTY INS CO
ACIG INSURANCE CO
ACUITY A MUTUAL INSURANCE CO
ADDISON INSURANCE CO
ADVANTAGE WORKERS COMP INS CO
AFFILIATED FM INSURANCE CO
AIG CENTENNIAL INSURANCE CO
AIG NATIONAL INSURANCE CO
AIG PREMIER INSURANCE CO
AIU INSURANCE CO
ALEA NORTH AMERICA INS CO
ALLIANZ GLOBAL RISK INSURANCE CO
ALLSTATE INDEMNITY CO
ALLSTATE INSURANCE CO
AMCO INSURANCE CO
AMCOMP ASSURANCE CORP
AMERICAN & FOREIGN INS CO
AMERICAN ALTERNATIVE INS CORP
AMERICAN AUTOMOBILE INS CO
AMERICAN CASUALTY CO OF READING
AMERICAN CENTENNIAL INS CO
AMERICAN COMPENSATION INS CO
AMERICAN COUNTRY INS CO
AMERICAN ECONOMY INS CO
AMERICAN EMPLOYERS INSURANCE CO
AMERICAN FAMILY MUTUAL INS CO
AMERICAN FIRE & CASUALTY CO
AMERICAN FUJI FIRE & MARINE
AMERICAN GENERAL PROPERTY INS CO
AMERICAN GUARANTEE & LIABILITY
AMERICAN HARDWARE MUTUAL INS CO
AMERICAN HEALTHCARE INDEMNITY CO
AMERICAN HOME ASSURANCE CO
AMERICAN INSURANCE CO
AMERICAN INTERNATIONAL INS CO
AMERICAN INTERNATIONAL SOUTH INS
AMERICAN INTERSTATE INSURANCE CO
AMERICAN MANUFACTURERS MUTUAL
AMERICAN MOTORISTS INSURANCE CO
AMERICAN NATIONAL PROPERTY & CAS CO
AMERICAN PHYSICIANS ASSURANCE CO
AMERICAN PROTECTION INS CO
AMERICAN REINSURANCE CO
AMERICAN SAFETY CASUALTY INS CO
AMERICAN SELECT INSURANCE CO
AMERICAN STATES INSURANCE CO
AMERICAN ZURICH INSURANCE CO
AMERISURE INSURANCE CO
AMERISURE MUTUAL INSURANCE CO
AMEX ASSURANCE CO
AMGUARD INSURANCE CO
ANSUR AMERICA INSURANCE CO
ARCH INSURANCE CO
ARGONAUT GREAT CENTRAL INS CO
ARGONAUT INSURANCE CO
ARGONAUT MIDWEST INSURANCE CO
ASSOCIATED INDEMNITY CO
ASSURANCE CO OF AMERICA
ATHENA ASSURANCE CO
ATLANTA INTERNATIONAL INS CO
ATLANTIC MUTUAL INSURANCE CO
ATLANTIC SPECIALTY INSURANCE CO
AUTO OWNERS INSURANCE CO
AUTOMOBILE INS CO OF HARTFORD
AXA CORPORATE SOLUTIONS INS CO
BADGER MUTUAL INSURANCE CO
BALBOA INSURANCE CO
BANCINSURE INC
BANKERS MULTIPLE LINE INS CO
BANKERS STANDARD INSURANCE CO
BCS INSURANCE CO
BENCHMARK INSURANCE CO
BERKLEY INSURANCE CO
BERKLEY REGIONAL INS CO
BIRMINGHAM FIRE INS CO OF PENN
BITUMINOUS CASUALTY CO
BITUMINOUS FIRE & MARINE INS CO
BLUE RIDGE INDEMNITY CO
BLUE RIDGE INSURANCE CO
BOSTON OLD COLONY INSURANCE
BROTHERHOOD MUTUAL INS CO
BUCKEYE STATE MUTUAL INS CO
BUILDERS MUTUAL INSURANCE CO
CALIFORNIA INDEMNITY INS CO
CAPITOL INDEMNITY CORPORATION
CAROLINA CASUALTY INSURANCE CO
CENTENNIAL INSURANCE CO
CENTRAL MUTUAL INSURANCE CO
CENTRE INSURANCE CO
CENTURY INDEMNITY CO
CHARTER OAK FIRE INSURANCE CO
CHEROKEE INSURANCE CO
CHICAGO MUTUAL INSURANCE CO
CHUBB INDEMNITY INSURANCE CO
CHUBB NATIONAL INSURANCE CO
CHURCH MUTUAL INSURANCE CO
CINCINNATI CASUALTY CO
CINCINNATI INDEMNITY CO
CINCINNATI INSURANCE CO
CITIES & VILLAGES INSURANCE CO
CITIZENS INSURANCE CO OF AMERICA
CLARENDON NATIONAL INSURANCE CO
CLERMONT INSURANCE CO
COLONIAL AMERICAN CAS & SURETY
COMMERCE & INDUSTRY INS CO
COMMERCIAL CASUALTY INS CO
COMMERCIAL INS CO OF NEWARK NJ
COMMUNITY INSURANCE CORP
COMPANION COMMERCIAL INS CO
COMPANION PROPERTY & CAS INS CO
COMPASS INSURANCE CO
CONNECTICUT INDEMNITY CO
CONSOLIDATED INSURANCE CO
CONSTITUTION INSURANCE CO
CONTINENTAL CASUALTY CO
CONTINENTAL DIVIDE INS CO
CONTINENTAL INSURANCE CO
CONTINENTAL NATIONAL IND CO
CONTINENTAL WESTERN INS CO
CONVERIUM INS (NORTH AMERICA) INC
COOPERATIVE MUTUAL INSURANCE CO
COREGIS INSURANCE CO
CORNHUSKER CASUALTY CO
COUNTRY MUTUAL INSURANCE CO
CRUM & FORSTER INDEMNITY CO
CUMIS INSURANCE SOCIETY
DAIMLER/CHRYSLER INSURANCE CO
DAIRYLAND INSURANCE CO
DAKOTA TRUCK UNDERWRITERS
DARWIN NATIONAL ASSURANCE CO
DEERFIELD INSURANCE CO
DEPOSITORS INSURANCE CO
DIAMOND INSURANCE CO
DISCOVER PROPERTY & CASUALTY INS CO
DISTRICTS MUTUAL INSURANCE CO
EASTGUARD INSURANCE CO
ECONOMY FIRE & CASUALTY CO
ECONOMY PREFERRED INSURANCE CO
ELECTRIC INSURANCE CO
EMCASCO INSURANCE CO
EMPLOYERS FIRE INSURANCE CO
EMPLOYERS INS OF WAUSAU
EMPLOYERS MUTUAL CASUALTY CO
EMPLOYERS REINSURANCE CORP
ERIE INSURANCE CO
ERIE INSURANCE EXCHANGE
ERIE INSURANCE PROP & CAS CO
EVEREST NATIONAL INSURANCE CO
EXECUTIVE RISK INDEMNITY INC
FAIRFIELD INSURANCE CO
FAIRMONT INSURANCE CO
FAIRMONT SPECIALTY INSURANCE CO
FARMERS AUTOMOBILE INS ASSOC
FARMERS INSURANCE EXCHANGE
FARMINGTON CASUALTY CO
FARMLAND MUTUAL INSURANCE CO
FEDERAL INSURANCE CO
FEDERATED MUTUAL INSURANCE CO
FEDERATED RURAL ELECTRIC INS
FEDERATED SERVICE INSURANCE CO
FIDELITY & CASUALTY CO OF NY
FIDELITY & DEPOSIT CO OF MD
FIDELITY & GUARANTY INS CO
FIDELITY & GUARANTY INS UNDER
FIRE & CASUALTY INS CO OF CONN
FIREMANS FUND INS CO OF WI
FIREMANS FUND INSURANCE CO
FIREMEN'S INS CO OF NEWARK
FIRST DAKOTA INDEMNITY CO
FIRST FINANCIAL INSURANCE CO
FIRST LIBERTY INSURANCE CORP
FIRST NATIONAL INS CO OF AMERICA
FIRST NONPROFIT INSURANCE CO
FLAGSHIP CITY INSURANCE CO
FLORISTS MUTUAL INSURANCE CO
FOREMOST INSURANCE CO
FORTUITY INSURANCE CO
FRANKENMUTH MUTUAL INS CO
FRONTIER INSURANCE CO
GENERAL CASUALTY CO OF ILLINOIS
GENERAL CASUALTY CO OF WI
GENERAL INS CO OF AMERICA
GENERAL REINSURANCE CORP
GENESIS INSURANCE CO
GERMANTOWN MUTUAL INSURANCE CO
GLEN FALLS INSURANCE CO
GLOBE INDEMNITY CO
GRANGE MUTUAL CASUALTY CO
GRANITE STATE INSURANCE CO
GRAY INSURANCE CO
GREAT AMERICAN ALLIANCE INSURANCE CO
GREAT AMERICAN ASSURANCE CO
GREAT AMERICAN INS CO OF NY
GREAT AMERICAN INSURANCE CO
GREAT AMERICAN SECURITY INS CO
GREAT AMERICAN SPIRIT INS CO
GREAT DIVIDE INSURANCE CO
GREAT MIDWEST INSURANCE CO
GREAT NORTHERN INSURANCE CO
GREAT NORTHWEST INSURANCE CO
GREAT WEST CASUALTY CO
GREATER NEW YORK MUTUAL INS CO
GREENWICH INSURANCE CO
GRINNELL MUTUAL REINSURANCE CO
GROCERS INSURANCE CO
GUIDEONE AMERICA MUTUAL INS CO
GUIDEONE ELITE INSURANCE CO
GUIDEONE MUTUAL INSURANCE CO
GULF INSURANCE CO
HANOVER INSURANCE CO
HARCO NATIONAL INSURANCE CO
HARLEYSVILLE INSURANCE CO
HARLEYSVILLE LAKE STATES INSURANCE CO
HARTFORD ACCIDENT & INDEMNITY CO
HARTFORD CASUALTY INSURANCE CO
HARTFORD FIRE INSURANCE CO
HARTFORD INSURANCE CO OF MIDWEST
HARTFORD UNDERWRITERS INS CO
HASTINGS MUTUAL INSURANCE CO
HAWKEYE SECURITY INS CO
HIGHLAND INSURANCE CO
HOMELAND CENTRAL INSURANCE CO
HOMESITE INSURANCE CO
HOUSTON GENERAL INSURANCE CO
ILLINOIS NATIONAL INSURANCE CO
IMPERIAL CASUALTY & INDEMNITY CO
IMT INSURANCE CO (MUTUAL)
INDEMNITY INS CO OF NORTH AMER
INDIANA INSURANCE CO
INDIANA LUMBERMENS MUTUAL INS CO
INS CO OF STATE OF PENNSYLVANIA
INSURANCE CO OF NORTH AMERICA
INSURANCE CO OF THE WEST
INSURANCE CORP OF NEW YORK
INTEGRITY MUTUAL INSURANCE CO
INTERNATIONAL BUSINESS
IOWA MUTUAL INSURANCE CO
KANSAS CITY FIRE & MARINE INS CO
KEMPER CASUALTY INSURANCE CO
L M GENERAL INSURANCE CO
L M INSURANCE CORPORATION
L M PERSONAL INSURANCE CO
L M PROPERTY & CASUALTY INSURANCE CO
LANCER INSURANCE CO
LAURIER INDEMNITY CO
LEAGUE OF WI MUNICIPALITIES MUTUAL INS
LIBERTY INSURANCE CORPORATION
LIBERTY INSURANCE UNDERWRITERS
LIBERTY MUTUAL FIRE INS CO
LIBERTY MUTUAL INSURANCE CO
LINCOLN GENERAL INSURANCE CO
LUMBERMENS MUTUAL CASUALTY CO
LUMBERMENS UNDERWRITING ALLIANCE
MAPLE VALLEY MUTUAL INS CO
MARKEL INSURANCE CO
MARYLAND CASUALTY CO
MARYLAND INSURANCE CO
MASSACHUSETTS BAY INSURANCE CO
MASSWEST INSURANCE CO
MEDICAL ASSURANCE CO IINC
MEDICAL PROTECTIVE CO
MEDMARC CASUALTY INSURANCE CO
MEEMIC INSURANCE CO
MERIDIAN SECURITY INSURANCE CO
METROPOLITAN DIRECT PROP & CAS
MIC PROPERTY & CASUALTY INS CO
MICHIGAN MILLERS MUTUAL INS CO
MID CENTURY INSURANCE CO
MIDDLESEX INSURANCE CO
MIDDLESEX MUTUAL ASSURANCE CO
MIDWEST EMPLOYERS CAS CO
MIDWEST FAMILY MUTUAL INSURANCE
MIDWESTERN INDEMNITY CO
MILBANK INSURANCE CO
MILLERS FIRST INSURANCE CO
MILWAUKEE CASUALTY INSURANCE CO
MILWAUKEE INSURANCE CO
MILWAUKEE SAFEGUARD INSURANCE CO
MITSUI SUMITOMO INSURANCE CO OF AMERICA
MITSUI SUMITOMO INSURANCE USA INC
MONROE GUARANTY INSURANCE CO
MUTUAL SERVICE CASUALTY INS CO
NATIONAL AMERICAN INS CO OF CA
NATIONAL AMERICAN INSURANCE CO
NATIONAL BEN FRANKLIN INS CO
NATIONAL FARMERS UNION PROP & CAS
NATIONAL FIRE INS CO OF HARTFORD
NATIONAL GRANGE MUTUAL INS CO
NATIONAL INDEMNITY CO
NATIONAL INTERSTATE INSURANCE CO
NATIONAL LIABILITY & FIRE INS CO
NATIONAL REINSURANCE CORPORATION
NATIONAL SURETY CORPORATION
NATIONAL UNION FIRE INS CO -PENN
NATIONWIDE AFFINITY INS CO OF AMERICA
NATIONWIDE AGRIBUSINESS INS CO
NATIONWIDE ASSURANCE CO
NATIONWIDE INSURANCE CO OF AMERICA
NATIONWIDE MUTUAL FIRE INS CO
NATIONWIDE MUTUAL INSURANCE CO
NATIONWIDE PROPERTY & CASUALTY
NETHERLANDS INSURANCE CO
NEW HAMPSHIRE INDEMNITY CO
NEW HAMPSHIRE INSURANCE CO
NEWARK INSURANCE CO
NIAGARA FIRE INS CO OF NEW YORK
NIPPONKOA INSURANCE CO LTD
NLC MUTUAL INSURANCE CO
NORGUARD INSURANCE CO
NORTH AMERICAN ELITE INS CO
NORTH AMERICAN SPECIALTY INS CO
NORTH RIVER INSURANCE CO
NORTHBROOK INDEMNITY CO
NORTHERN ASSURANCE CO OF AMERICA
NORTHERN INS CO OF NEW YORK
NORTHWESTERN NATIONAL INS CO
OCCIDENTAL FIRE & CASUALTY INS
ODYSSEY AMERICA REINSURANCE CORP
OHIC INSURANCE CO FORMERLY
OHIO CASUALTY INSURANCE CO
OHIO FARMERS INSURANCE CO
OHIO SECURITY INSURANCE CO
OLD REPUBLIC INSURANCE CO
OLD REPUBLIC MERCANTILE INS CO
OMAHA INDEMNITY CO
ONEBEACON AMERICA INSURANCE CO
ONEBEACON INSURANCE CO
ONEBEACON MIDWEST INS CO
OWNERS INSURANCE CO
PACIFIC EMPLOYERS INSURANCE CO
PACIFIC INDEMNITY CO
PARTNERRE INSURANCE CO OF NY
PARTNERS MUTUAL INSURANCE CO
PATRIOT GENERAL INSURANCE CO
PEERLESS INSURANCE CO
PEKIN INSURANCE CO
PENN MILLERS INSURANCE CO
PENNSYLVANIA GENERAL INS CO
PENNSYLVANIA LUMBERMENS MUTUAL INS
PENNSYLVANIA MANUFACTURERS ASSOC
PENNSYLVANIA NATIONAL MUTUAL CAS
PETROLEUM CASUALTY CO
PHARMACISTS MUTUAL INSURANCE CO
PHOENIX ASSURANCE CO OF NEW YORK
PHOENIX INSURANCE CO
PLATINUM UNDERWRITERS REINSURANCE INC
PMA CAPITAL INSURANCE CORP
POTOMAC INSURANCE CO OF ILLINOIS
PREFERRED PROFESSIONALS INS CO
PROFESSIONAL LIAB INS CO OF AMERICA
PROPERTY & CASUALTY CO OF HTFD
PROTECTIVE INSURANCE CO
PROVIDENCE WASHINGTON INS CO
PUBLIC SERVICE MUTUAL INS CO
QUANTA INDEMNITY CO
RAMPART INSURANCE CO
REDLAND INSURANCE CO
REGENT INSURANCE CO
REINSURANCE CO OF AMERICA
REPUBLIC FRANKLIN INSURANCE CO
REPUBLIC INDEMNITY CO OF AMERICA
REPUBLIC INDEMNITY CO OF CALIF
REPUBLIC WESTERN INSURANCE CO
RESPONSE 'WORLDWIDE INSURANCE CO
RISCORP NATIONAL INS CO
ROCHDALE INSURANCE CO
ROCKFORD MUTUAL INSURANCE CO
ROYAL & SUNALLIANCE PERSONAL INS CO
ROYAL INDEMNITY CO
ROYAL INSURANCE CO OF AMERICA
RURAL MUTUAL INSURANCE CO
SAFECO INSURANCE CO OF AMERICA
SAFEGUARD INSURANCE CO
SAFETY FIRST INSURANCE CO
SAFETY NATIONAL CASUALTY CORP
SAGAMORE INSURANCE CO
SCOR REINSURANCE CO
SEABOARD SURETY CO
SEABRIGHT INSURANCE CO
SEATON INSURANCE CO
SECURA INSURANCE A MUTUAL CO
SECURA SUPREME INSURANCE CO
SECURITY INS CO OF HARTFORD
SELECT INSURANCE CO
SELECTIVE INS OF SOUTH CAROLINA
SELECTIVE INS OF THE SOUTHEAST
SENECA INSURANCE CO
SENTINEL INSURANCE CO LTD
SENTRY INSURANCE A MUTUAL CO
SENTRY SELECT INSURANCE CO
SHEBOYGAN FALLS INSURANCE CO
SIRIUS AMERICA INS CO
SOCIETY INSURANCE A MUTUAL CO
SOMPO JAPAN INS CO OF AMERICA
SOUTHERN FIRE & CASUALTY CO
SOUTHERN GUARANTY INSURANCE CO
SOUTHERN PILOT INSURANCE CO
SPECIALTY NATIONAL INSURANCE CO
ST PAUL FIRE & CASUALTY CO
ST PAUL FIRE & MARINE INS CO
ST PAUL GUARDIAN INSURANCE CO
ST PAUL MEDICAL INS CO
ST PAUL MERCURY INSURANCE CO
ST PAUL PROTECTIVE INSURANCE CO
STANDARD FIRE INSURANCE CO
STAR INSURANCE CO
STARNET INSURANCE CO
STATE AUTO PROPERTY & CAS INS CO
STATE AUTOMOBILE MUTUAL INS CO
STATE FARM FIRE & CASUALTY CO
STATE FARM GENERAL INSURANCE CO
STATE FUND MUTUAL INSURANCE
STONINGTON INSURANCE CO
T H E INSURANCE CO
TEACHERS INSURANCE CO
THE DOCTORS CO
TIG INSURANCE CO
TIG PREMIER INSURANCE
TNUS INSURANCE CO
TOKIO MARINE & NICHIDO FIRE INS CO LTD
TOYOTA MOTOR INSURANCE CO
TRANS PACIFIC INSURANCE CO
TRANSCONTINENTAL INSURANCE CO
TRANSGUARD INS CO OF AMERICA INC
TRANSPORT INSURANCE CO
TRANSPORTATION INSURANCE CO
TRAVELERS CAS & SURETY CO
TRAVELERS CAS & SURETY OF AMER
TRAVELERS CASUALTY CO OF CT
TRAVELERS CASUALTY INS CO OF AMERICA
TRAVELERS COMMERCIAL CASUALTY CO
TRAVELERS COMMERCIAL INS CO
TRAVELERS INDEMNITY CO OF AMER
TRAVELERS INDEMNITY CO OF CT
TRAVELERS INDEMNITY CO
TRAVELERS INSURANCE CO
TRAVELERS PROP & CAS CO OF AMERICA
TRINITY UNIVERSAL INSURANCE CO
TRI-STATE INS CO OF MINNESOTA
TRUCK INSURANCE EXCHANGE
TRUMBULL INSURANCE CO
TRUSTGARD INSURANCE CO
TWIN CITY FIRE INSURANCE CO
U S SPECIALTY INSURANCE CO
ULICO CASUALTY CO
UNIGARD INSURANCE CO
UNION INSURANCE CO
UNITED FIRE & CASUALTY CO
UNITED NATIONAL CASUALTY INS CO
UNITED NATIONAL SPECIALTY INSURANCE CO
UNITED SECURITY INSURANCE CO
UNITED STATES FIDELITY & GUAR
UNITED STATES FIRE INS CO
UNITED STATES LIABILITY INS CO
UNITED WISCONSIN INSURANCE
UNITRIN AUTO & HOME INSURANCE CO
UNITRIN PREFERRED INSURANCE CO
UNIVERSAL UNDERWRITERS INSURANCE
UTICA MUTUAL INSURANCE CO
VALIANT INSURANCE CO
VALLEY FORGE INSURANCE CO
VANLINER INSURANCE CO
VENTURE INSURANCE CO
VIGILANT INSURANCE CO
VIKING INS CO OF WISCONSIN
VIRGINIA SURETY CO
WAUSAU BUSINESS INSURANCE CO
WAUSAU GENERAL INSURANCE CO
WAUSAU UNDERWRITERS INS CO
WEST AMERICAN INSURANCE CO
WEST BEND MUTUAL INSURANCE CO
WESTCHESTER FIRE INSURANCE CO
WESTERN DIVERSIFIED CAS INS CO
WESTERN NATIONAL ASSURANCE CO
WESTERN NATIONAL MUTUAL INS CO
WESTFIELD INSURANCE CO
WESTFIELD NATIONAL INSURANCE CO
WESTPORT INSURANCE CO
WILLIAMSBURG NATIONAL INS CO
WILSON MUTUAL INSURANCE CO
WISCONSIN AMERICAN MUTUAL INS CO
WISCONSIN COUNTY MUTUAL INS CORP
WISCONSIN MUNICIPAL MUTUAL INS CO
X L INSURANCE AMERICA INC
X L REINSURANCE AMERICA INC
X L SPECIALTY INSURANCE CO
YORK INSURANCE CO
ZENITH INSURANCE CO
ZURICH AMERICAN INS CO OF IL
ZURICH AMERICAN INSURANCE CO