List of Workers Compensation Insurance Companies
Below is a list of workers compensation insurance companies in alphabetical order. See the top 218 workers compensation carriers in North America below.
NAIC Lookup
You can press Control + F to search for a specific company by name or NAIC number. Or, you can search each company individually at the National Association of Insurance Commissioners.
State of Domicile |
Company Name |
NAIC Number |
NAIC Group Number |
| MI | ACCIDENT FUND INSURANCE COMPANY OF AMERICA | 10166 | 0572 |
| PA | ACE AMERICAN INSURANCE COMPANY | 22667 | 0626 |
| PA | ACE FIRE UNDERWRITERS INSURANCE COMPANY | 20702 | 0626 |
| PA | ACE PROPERTY AND CASUALTY INSURANCE COMPANY | 20699 | 0626 |
| IL | ACIG INSURANCE COMPANY | 19984 | 0594 |
| IN | ADVANTAGE WORKERS COMPENSATION INSURANCE COMPANY | 40517 | 0000 |
| PA | AIG PROPERTY CASUALTY COMPANY | 19402 | 0012 |
| AK | ALASKA NATIONAL INSURANCE COMPANY | 38733 | 0000 |
| MI | ALLMERICA FINANCIAL BENEFIT INSURANCE COMPANY | 41840 | 0088 |
| DE | AMERICAN ALTERNATIVE INSURANCE CORPORATION | 19720 | 0361 |
| MO | AMERICAN AUTOMOBILE INSURANCE COMPANY | 21849 | 0761 |
| PA | AMERICAN CASUALTY COMPANY OF READING, PENNSYLVANIA | 20427 | 0218 |
| IN | AMERICAN ECONOMY INSURANCE COMPANY | 19690 | 0111 |
| FL | AMERICAN FAMILY HOME INSURANCE COMPANY | 23450 | 0361 |
| NH | AMERICAN FIRE AND CASUALTY COMPANY | 24066 | 0111 |
| NY | AMERICAN GUARANTEE AND LIABILITY INSURANCE COMPANY | 26247 | 0212 |
| NY | AMERICAN HOME ASSURANCE COMPANY | 19380 | 0012 |
| OH | AMERICAN INSURANCE COMPANY | 21857 | 0761 |
| NE | AMERICAN INTERSTATE INSURANCE COMPANY | 31895 | 0680 |
| OH | AMERICAN MODERN HOME INSURANCE COMPANY | 23469 | 0361 |
| TX | AMERICAN STATES INSURANCE COMPANY OF TEXAS | 19712 | 0111 |
| IN | AMERICAN STATES INSURANCE COMPANY | 19704 | 0111 |
| IL | AMERICAN ZURICH INSURANCE COMPANY | 40142 | 0212 |
| MI | AMERISURE MUTUAL INSURANCE COMPANY | 23396 | 0124 |
| PA | AMGUARD INSURANCE COMPANY | 42390 | 0031 |
| MO | ARCH INSURANCE COMPANY | 11150 | 1279 |
| IL | ARGONAUT INSURANCE COMPANY | 19801 | 0457 |
| IL | ARGONAUT-MIDWEST INSURANCE COMPANY | 19828 | 0457 |
| IL | ARGONAUT-SOUTHWEST INSURANCE COMPANY | 19844 | 0457 |
| DE | ARROWOOD INDEMNITY COMPANY | 24678 | 0553 |
| CA | ASSOCIATED INDEMNITY CORPORATION | 21865 | 0761 |
| NY | ASSURANCE COMPANY OF AMERICA | 19305 | 0212 |
| NY | ATLANTIC SPECIALTY INSURANCE COMPANY | 27154 | 1129 |
| KS | BENCHMARK INSURANCE COMPANY | 41394 | 0000 |
| IA | BERKLEY NATIONAL INSURANCE COMPANY | 38911 | 0098 |
| DE | BERKLEY REGIONAL INSURANCE COMPANY | 29580 | 0098 |
| IN | BROTHERHOOD MUTUAL INSURANCE COMPANY | 13528 | 0000 |
| CA | CALIFORNIA CASUALTY INDEMNITY EXCHANGE | 20117 | 0033 |
| CA | CALIFORNIA INSURANCE COMPANY | 38865 | 0031 |
| CA | CARE WEST INSURANCE COMPANY | 10520 | 0000 |
| NY | CHUBB INDEMNITY INSURANCE COMPANY | 12777 | 0038 |
| IN | CHUBB NATIONAL INSURANCE COMPANY | 10052 | 0038 |
| WI | CHURCH MUTUAL INSURANCE COMPANY | 18767 | 0000 |
| OH | CINCINNATI CASUALTY COMPANY | 28665 | 0244 |
| OH | CINCINNATI INSURANCE COMPANY | 10677 | 0244 |
| MI | CITIZENS INSURANCE COMPANY OF AMERICA | 31534 | 0088 |
| CA | CIVIC PROPERTY AND CASUALTY COMPANY | 10315 | 0069 |
| NY | COMMERCE AND INDUSTRY INSURANCE COMPANY | 19410 | 0012 |
| SC | COMPANION PROPERTY AND CASUALTY INSURANCE COMPANY | 12157 | 0661 |
| CA | COMPWEST INSURANCE COMPANY | 12177 | 0572 |
| IL | CONTINENTAL CASUALTY COMPANY | 20443 | 0218 |
| PA | CONTINENTAL INSURANCE COMPANY | 35289 | 0218 |
| DE | CRUM & FORSTER INDEMNITY COMPANY | 31348 | 0158 |
| CA | CYPRESS INSURANCE COMPANY | 10855 | 0031 |
| CA | DENTISTS INSURANCE COMPANY | 40975 | 0000 |
| CT | DISCOVER PROPERTY & CASUALTY INSURANCE COMPANY | 36463 | 3548 |
| PA | EASTGUARD INSURANCE COMPANY | 14702 | 0031 |
| MA | ELECTRIC INSURANCE COMPANY | 21261 | 0057 |
| CA | EMPLOYERS COMPENSATION INSURANCE COMPANY | 11512 | 3363 |
| WI | EMPLOYERS INSURANCE COMPANY OF WAUSAU | 21458 | 0111 |
| IA | EMPLOYERS MUTUAL CASUALTY COMPANY | 21415 | 0062 |
| PA | EMPLOYERS’ FIRE INSURANCE COMPANY | 20648 | 1129 |
| DE | EVEREST NATIONAL INSURANCE COMPANY | 10120 | 1120 |
| CA | EXACT PROPERTY AND CASUALTY COMPANY | 10318 | 0069 |
| CA | EXPLORER INSURANCE COMPANY | 40029 | 0922 |
| CA | FARMERS INSURANCE EXCHANGE | 21652 | 0069 |
| CT | FARMINGTON CASUALTY COMPANY | 41483 | 3548 |
| IA | FARMLAND MUTUAL INSURANCE COMPANY | 13838 | 0140 |
| IN | FEDERAL INSURANCE COMPANY | 20281 | 0038 |
| WI | FIDELITY AND GUARANTY INSURANCE UNDERWRITERS, INC. | 25879 | 3548 |
| CA | FIREMAN’S FUND INSURANCE COMPANY | 21873 | 0761 |
| IL | FIRST LIBERTY INSURANCE CORPORATION | 33588 | 0111 |
| NH | FIRST NATIONAL INSURANCE COMPANY OF AMERICA | 24724 | 0111 |
| IL | FLORISTS’ MUTUAL INSURANCE COMPANY | 13978 | 0349 |
| MI | FOREMOST INSURANCE COMPANY GRAND RAPIDS, MICHIGAN | 11185 | 0069 |
| MI | FOREMOST PROPERTY AND CASUALTY INSURANCE COMPANY | 11800 | 0069 |
| MI | FOREMOST SIGNATURE INSURANCE COMPANY | 41513 | 0069 |
| WI | GENERAL CASUALTY COMPANY OF WISCONSIN | 24414 | 0796 |
| NH | GENERAL INSURANCE COMPANY OF AMERICA | 24732 | 0111 |
| PA | GRANITE STATE INSURANCE COMPANY | 23809 | 0012 |
| NY | GRAPHIC ARTS MUTUAL INSURANCE COMPANY | 25984 | 0201 |
| OH | GREAT AMERICAN ALLIANCE INSURANCE COMPANY | 26832 | 0084 |
| OH | GREAT AMERICAN ASSURANCE COMPANY | 26344 | 0084 |
| NY | GREAT AMERICAN INSURANCE COMPANY OF NEW YORK | 22136 | 0084 |
| ND | GREAT DIVIDE INSURANCE COMPANY | 25224 | 0098 |
| IN | GREAT NORTHERN INSURANCE COMPANY | 20303 | 0038 |
| NE | GREAT WEST CASUALTY COMPANY | 11371 | 0150 |
| DE | GREENWICH INSURANCE COMPANY | 22322 | 1285 |
| IA | GUIDEONE MUTUAL INSURANCE COMPANY | 15032 | 0303 |
| NH | HANOVER AMERICAN INSURANCE COMPANY | 36064 | 0088 |
| NH | HANOVER INSURANCE COMPANY | 22292 | 0088 |
| CT | HARTFORD ACCIDENT AND INDEMNITY COMPANY | 22357 | 0091 |
| IN | HARTFORD CASUALTY INSURANCE COMPANY | 29424 | 0091 |
| CT | HARTFORD FIRE INSURANCE COMPANY | 19682 | 0091 |
| IN | HARTFORD INSURANCE COMPANY OF THE MIDWEST | 37478 | 0091 |
| CT | HARTFORD UNDERWRITERS INSURANCE COMPANY | 30104 | 0091 |
| IL | HDI-GERLING AMERICA INSURANCE COMPANY | 41343 | 0517 |
| TX | IMPERIUM INSURANCE COMPANY | 35408 | 4381 |
| PA | INDEMNITY INSURANCE COMPANY OF NORTH AMERICA | 43575 | 0626 |
| PA | INSURANCE COMPANY OF THE STATE OF PENNSYLVANIA | 19429 | 0012 |
| CA | INSURANCE COMPANY OF THE WEST | 27847 | 0922 |
| IL | LIBERTY INSURANCE CORPORATION | 42404 | 0111 |
| WI | LIBERTY MUTUAL FIRE INSURANCE COMPANY | 23035 | 0111 |
| MA | LIBERTY MUTUAL INSURANCE COMPANY | 23043 | 0111 |
| OR | LIBERTY NORTHWEST INSURANCE CORPORATION | 41939 | 0111 |
| IL | LM INSURANCE CORPORATION | 33600 | 0111 |
| MO | LUMBERMEN’S UNDERWRITING ALLIANCE | 23108 | 0000 |
| PA | MANUFACTURERS ALLIANCE INSURANCE COMPANY | 36897 | 0150 |
| IL | MARKEL INSURANCE COMPANY | 38970 | 0785 |
| MD | MARYLAND CASUALTY COMPANY | 19356 | 0212 |
| NH | MASSACHUSETTS BAY INSURANCE COMPANY | 22306 | 0088 |
| NH | MEMIC INDEMNITY COMPANY | 11030 | 1332 |
| CA | MID-CENTURY INSURANCE COMPANY | 21687 | 0069 |
| WI | MIDDLESEX INSURANCE COMPANY | 23434 | 0169 |
| NY | MITSUI SUMITOMO INSURANCE COMPANY OF AMERICA | 20362 | 4715 |
| NY | MITSUI SUMITOMO INSURANCE USA INC. | 22551 | 4715 |
| OK | NATIONAL AMERICAN INSURANCE COMPANY | 23663 | 0000 |
| WI | NATIONAL CASUALTY COMPANY | 11991 | 0140 |
| IL | NATIONAL FIRE INSURANCE COMPANY OF HARTFORD | 20478 | 0218 |
| OH | NATIONAL INTERSTATE INSURANCE COMPANY | 32620 | 0084 |
| IL | NATIONAL SURETY CORPORATION | 21881 | 0761 |
| PA | NATIONAL UNION FIRE INSURANCE COMPANY OF PITTSBURGH, PA | 19445 | 0012 |
| IA | NATIONWIDE AGRIBUSINESS INSURANCE COMPANY | 28223 | 0140 |
| NH | NETHERLANDS INSURANCE COMPANY | 24171 | 0111 |
| PA | NEW HAMPSHIRE INSURANCE COMPANY | 23841 | 0012 |
| NY | NEW YORK MARINE AND GENERAL INSURANCE COMPANY | 16608 | 0256 |
| PA | NORGUARD INSURANCE COMPANY | 31470 | 0031 |
| PA | NORTH POINTE INSURANCE COMPANY | 27740 | 0796 |
| NJ | NORTH RIVER INSURANCE COMPANY | 21105 | 0158 |
| NY | NORTHERN INSURANCE COMPANY OF NEW YORK | 19372 | 0212 |
| NY | NOVA CASUALTY COMPANY | 42552 | 0088 |
| NE | OAK RIVER INSURANCE COMPANY | 34630 | 0031 |
| NH | OHIO CASUALTY INSURANCE COMPANY | 24074 | 0111 |
| NH | OHIO SECURITY INSURANCE COMPANY | 24082 | 0111 |
| IL | OLD REPUBLIC GENERAL INSURANCE CORPORATION | 24139 | 0150 |
| PA | OLD REPUBLIC INSURANCE COMPANY | 24147 | 0150 |
| PA | ONEBEACON AMERICA INSURANCE COMPANY | 20621 | 1129 |
| PA | ONEBEACON INSURANCE COMPANY | 21970 | 1129 |
| CA | PACIFIC COMPENSATION INSURANCE COMPANY | 11555 | 0501 |
| PA | PACIFIC EMPLOYERS INSURANCE COMPANY | 22748 | 0626 |
| WI | PACIFIC INDEMNITY COMPANY | 20346 | 0038 |
| IL | PEERLESS INDEMNITY INSURANCE COMPANY | 18333 | 0111 |
| NH | PEERLESS INSURANCE COMPANY | 24198 | 0111 |
| PA | PENNSYLVANIA MANUFACTURERS INDEMNITY COMPANY | 41424 | 0150 |
| PA | PENNSYLVANIA MANUFACTURERS’ ASSOCIATION INSURANCE COMPANY | 12262 | 0150 |
| TX | PETROLEUM CASUALTY COMPANY | 12297 | 0000 |
| IA | PHARMACISTS MUTUAL INSURANCE COMPANY | 13714 | 0775 |
| PA | PRAETORIAN INSURANCE COMPANY | 37257 | 0796 |
| CA | PREFERRED EMPLOYERS INSURANCE COMPANY | 10900 | 0098 |
| MI | PROCENTURY INSURANCE COMPANY | 21903 | 0748 |
| IN | PROPERTY AND CASUALTY INSURANCE COMPANY OF HARTFORD | 34690 | 0091 |
| IN | PROTECTIVE INSURANCE COMPANY | 12416 | 0867 |
| IL | PUBLIC SERVICE INSURANCE COMPANY | 15059 | 0853 |
| PA | QBE INSURANCE CORPORATION | 39217 | 0796 |
| WI | REGENT INSURANCE COMPANY | 24449 | 0796 |
| CA | REPUBLIC INDEMNITY COMPANY OF AMERICA | 22179 | 0084 |
| CA | REPUBLIC INDEMNITY COMPANY OF CALIFORNIA | 43753 | 0084 |
| TX | REPUBLIC UNDERWRITERS INSURANCE COMPANY | 24538 | 3489 |
| IL | RLI INSURANCE COMPANY | 13056 | 0783 |
| NH | SAFECO INSURANCE COMPANY OF AMERICA | 24740 | 0111 |
| IL | SAFECO INSURANCE COMPANY OF ILLINOIS | 39012 | 0111 |
| MO | SAFETY NATIONAL CASUALTY CORPORATION | 15105 | 3098 |
| NY | SAMSUNG FIRE & MARINE INSURANCE CO., LTD. (UNITED STATES BRANCH) | 38300 | 0000 |
| IL | SEABRIGHT INSURANCE COMPANY | 15563 | 4725 |
| DE | SECURITY NATIONAL INSURANCE COMPANY | 19879 | 2538 |
| CT | SENTINEL INSURANCE COMPANY, LTD. | 11000 | 0091 |
| WI | SENTRY CASUALTY COMPANY | 28460 | 0169 |
| WI | SENTRY INSURANCE A MUTUAL COMPANY | 24988 | 0169 |
| WI | SENTRY SELECT INSURANCE COMPANY | 21180 | 0169 |
| CA | SEQUOIA INSURANCE COMPANY | 22985 | 2538 |
| NY | SOMPO JAPAN FIRE & MARINE INSURANCE COMPANY OF AMERICA | 38997 | 3219 |
| NY | SOMPO JAPAN INSURANCE COMPANY OF AMERICA | 11126 | 3219 |
| TX | SOUTHERN INSURANCE COMPANY | 19216 | 3489 |
| CA | SPARTA AMERICAN INSURANCE COMPANY | 10079 | 4746 |
| CT | SPARTA INSURANCE COMPANY | 20613 | 4746 |
| CA | SPRINGFIELD INSURANCE COMPANY | 36790 | 0000 |
| CT | STANDARD FIRE INSURANCE COMPANY | 19070 | 3548 |
| MI | STAR INSURANCE COMPANY | 18023 | 0748 |
| DE | STARNET INSURANCE COMPANY | 40045 | 0098 |
| TX | STARR INDEMNITY & LIABILITY COMPANY | 38318 | 4670 |
| CA | STATE COMPENSATION INSURANCE FUND | 35076 | 0000 |
| IL | STATE FARM FIRE AND CASUALTY COMPANY | 25143 | 0176 |
| TX | STATE NATIONAL INSURANCE COMPANY, INC. | 12831 | 0093 |
| TX | STONINGTON INSURANCE COMPANY | 10340 | 0796 |
| NH | TECHNOLOGY INSURANCE COMPANY, INC. | 42376 | 2538 |
| CA | TIG INSURANCE COMPANY | 25534 | 0158 |
| NY | TNUS INSURANCE COMPANY | 32301 | 3098 |
| NY | TOKIO MARINE AMERICA INSURANCE COMPANY | 10945 | 3098 |
| DE | TORUS NATIONAL INSURANCE COMPANY | 25496 | 4725 |
| NY | TRANS PACIFIC INSURANCE COMPANY | 41238 | 3098 |
| IL | TRANSGUARD INSURANCE COMPANY OF AMERICA, INC | 28886 | 0225 |
| IL | TRANSPORTATION INSURANCE COMPANY | 20494 | 0218 |
| CT | TRAVELERS COMMERCIAL INSURANCE COMPANY | 36137 | 3548 |
| CT | TRAVELERS INDEMNITY COMPANY | 25658 | 3548 |
| CT | TRAVELERS INDEMNITY COMPANY OF CONNECTICUT | 25682 | 3548 |
| CT | TRAVELERS PROPERTY CASUALTY COMPANY OF AMERICA | 25674 | 3548 |
| CT | TRAVELERS PROPERTY CASUALTY INSURANCE COMPANY | 36161 | 3548 |
| CA | TRUCK INSURANCE EXCHANGE | 21709 | 0069 |
| CT | TRUMBULL INSURANCE COMPANY | 27120 | 0091 |
| IN | TWIN CITY FIRE INSURANCE COMPANY | 29459 | 0091 |
| CT | UNITED STATES FIDELITY AND GUARANTY COMPANY | 25887 | 3548 |
| DE | UNITED STATES FIRE INSURANCE COMPANY | 21113 | 0158 |
| WI | UNITED WISCONSIN INSURANCE COMPANY | 29157 | 0572 |
| NY | UTICA MUTUAL INSURANCE COMPANY | 25976 | 0201 |
| PA | VALLEY FORGE INSURANCE COMPANY | 20508 | 0218 |
| MO | VANLINER INSURANCE COMPANY | 21172 | 0084 |
| NY | VIGILANT INSURANCE COMPANY | 20397 | 0038 |
| WI | WAUSAU BUSINESS INSURANCE COMPANY | 26069 | 0111 |
| WI | WAUSAU UNDERWRITERS INSURANCE COMPANY | 26042 | 0111 |
| DE | WESCO INSURANCE COMPANY | 25011 | 2538 |
| IN | WEST AMERICAN INSURANCE COMPANY | 44393 | 0111 |
| MI | WILLIAMSBURG NATIONAL INSURANCE COMPANY | 25780 | 0748 |
| DE | XL INSURANCE AMERICA, INC. | 24554 | 1285 |
| DE | XL SPECIALTY INSURANCE COMPANY | 37885 | 1285 |
| CA | ZENITH INSURANCE COMPANY | 13269 | 0158 |
| CA | ZNAT INSURANCE COMPANY | 30120 | 0158 |
| IL | ZURICH AMERICAN INSURANCE COMPANY OF ILLINOIS | 27855 | 0212 |
| NY | ZURICH AMERICAN INSURANCE COMPANY | 16535 | 0212 |
List of Workers Compensation Insurance Companies