Workers' Compensation Companies by Market Share

 

For more information on any company, click the Company Name "Info" link. To view all companies in the same group, click the NAIC Group Number.

Company NameState of DomicileNAIC NumberNAIC Group Number
STATE COMPENSATION INSURANCE FUND (Info)
CA
35076
0000
INSURANCE COMPANY OF THE WEST (Info)
CA
27847
0922
TRAVELERS PROPERTY CASUALTY COMPANY OF AMERICA (Info)
CT
25674
3548
ZURICH AMERICAN INSURANCE COMPANY (Info)
NY
16535
0212
ZENITH INSURANCE COMPANY (Info)
CA
13269
0158
CYPRESS INSURANCE COMPANY (Info)
CA
10855
0031
PACIFIC COMPENSATION INSURANCE COMPANY (Info)
CA
11555
4485
TECHNOLOGY INSURANCE COMPANY, INC. (Info)
DE
42376
2538
ACE AMERICAN INSURANCE COMPANY (Info)
PA
22667
0626
BENCHMARK INSURANCE COMPANY (Info)
KS
41394
4886
SECURITY NATIONAL INSURANCE COMPANY (Info)
DE
19879
2538
REDWOOD FIRE AND CASUALTY INSURANCE COMPANY (Info)
NE
11673
0031
FEDERAL INSURANCE COMPANY (Info)
IN
20281
0626
AMERICAN ZURICH INSURANCE COMPANY (Info)
IL
40142
0212
EVEREST PREMIER INSURANCE COMPANY (Info)
DE
16045
1120
EMPLOYERS PREFERRED INSURANCE COMPANY (Info)
FL
10346
3363
COMPWEST INSURANCE COMPANY (Info)
CA
12177
0572
ARCH INSURANCE COMPANY (Info)
MO
11150
1279
PREFERRED EMPLOYERS INSURANCE COMPANY (Info)
CA
10900
0098
PROPERTY AND CASUALTY INSURANCE COMPANY OF HARTFORD (Info)
IN
34690
0091
OLD REPUBLIC INSURANCE COMPANY (Info)
PA
24147
0150
NORGUARD INSURANCE COMPANY (Info)
PA
31470
0031
FALLS LAKE FIRE AND CASUALTY COMPANY (Info)
CA
15884
3494
OAK RIVER INSURANCE COMPANY (Info)
NE
34630
0031
REPUBLIC INDEMNITY COMPANY OF CALIFORNIA (Info)
CA
43753
0084
MID-CENTURY INSURANCE COMPANY (Info)
CA
21687
0069
BERKSHIRE HATHAWAY HOMESTATE INSURANCE COMPANY (Info)
NE
20044
0031
NATIONAL UNION FIRE INSURANCE COMPANY OF PITTSBURGH, PA (Info)
PA
19445
0012
PREFERRED PROFESSIONAL INSURANCE COMPANY (Info)
NE
36234
1154
STARSTONE NATIONAL INSURANCE COMPANY (Info)
DE
25496
4990
EMPLOYERS ASSURANCE COMPANY (Info)
FL
25402
3363
MARKEL INSURANCE COMPANY (Info)
IL
38970
0785
ALASKA NATIONAL INSURANCE COMPANY (Info)
AK
38733
4485
SAFETY NATIONAL CASUALTY CORPORATION (Info)
MO
15105
3098
EVEREST NATIONAL INSURANCE COMPANY (Info)
DE
10120
1120
LIBERTY MUTUAL FIRE INSURANCE COMPANY (Info)
WI
23035
0111
STATE FARM FIRE AND CASUALTY COMPANY (Info)
IL
25143
0176
STARR INDEMNITY & LIABILITY COMPANY (Info)
TX
38318
4670
SENTINEL INSURANCE COMPANY, LTD. (Info)
CT
11000
0091
WESCO INSURANCE COMPANY (Info)
DE
25011
2538
OLD REPUBLIC GENERAL INSURANCE CORPORATION (Info)
IL
24139
0150
CALIFORNIA INSURANCE COMPANY (Info)
CA
38865
4962
XL SPECIALTY INSURANCE COMPANY (Info)
DE
37885
0968
OHIO SECURITY INSURANCE COMPANY (Info)
NH
24082
0111
HARTFORD CASUALTY INSURANCE COMPANY (Info)
IN
29424
0091
NATIONAL CASUALTY COMPANY (Info)
OH
11991
0140
LIBERTY INSURANCE CORPORATION (Info)
IL
42404
0111
STATE NATIONAL INSURANCE COMPANY, INC. (Info)
TX
12831
0785
TWIN CITY FIRE INSURANCE COMPANY (Info)
IN
29459
0091
HARTFORD ACCIDENT AND INDEMNITY COMPANY (Info)
CT
22357
0091

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