

The Hanover Insurance Group.
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Harleysville Preferred Insurance Company
Old Republic General Insurance Corp
Utica Mutual Insurance Company
Liberty Mutual Insurance Company
Riverport Insurance Company
T.H.E. Insurance Company
Falls Lake National Insurance Company
Harleysville Worcester Insurance Company
Nationwide General Insurance Company
Pennsylvania National Mutual Cas Ins Co
California
Insurance companies writing workers’ compensation coverage in California, listed by market share.
State Compensation Insurance Fund
Insurance Company of the West
Travelers Property Casualty Co of Amer
Technology Insurance Company, Inc.
Zurich American Insurance Company
Zenith Insurance Company
Cypress Insurance Company
Employers Preferred Insurance Company
Property and Casualty Ins Co of Hartford
ACE American Insurance Company
Security National Insurance Company
Arch Insurance Company
Pacific Compensation Insurance Company
Everest Premier Insurance Company
StarStone National Insurance Company
Federal Insurance Company
Old Republic Insurance Company
American Zurich Insurance Company
Service American Indemnity Company
Berkshire Hathaway Homestate Ins Co
Redwood Fire and Casualty Insurance Co
Mid-Century Insurance Company
CompWest Insurance Company
Preferred Employers Insurance Company
Benchmark Insurance Company
Republic Indemnity Company of America
National Union Fire Ins Co Pittsburgh PA
Falls Lake Fire and Casualty Company
SiriusPoint America Insurance Company
State Farm Fire and Casualty Company
Alaska National Insurance Company
NorGUARD Insurance Company
Clear Spring Property & Casualty Company
Markel Insurance Company
Sentinel Insurance Company, Ltd.
Preferred Professional Insurance Company
Safety National Casualty Corporation
Oak River Insurance Company
Employers Assurance Company
National Casualty Company
WCF National Insurance Company
Starr Indemnity & Liability Company
Wesco Insurance Company
United Wisconsin Insurance Company
Liberty Mutual Fire Insurance Company
Hartford Accident and Indemnity Company
Sequoia Insurance Company
XL Specialty Insurance Company
Everest National Insurance Company
AIU Insurance Company
Hartford Casualty Insurance Company
Republic Indemnity Company of California
Liberty Insurance Corporation
Twin City Fire Insurance Company
Hartford Insurance Co of the Midwest
Ohio Security Insurance Company
Star Insurance Company
StarNet Insurance Company
State National Insurance Company, Inc.
ZNAT Insurance Company
Hartford Fire Insurance Company
Transverse Insurance Company
LM Insurance Corporation
ProCentury Insurance Company
Palomar Specialty Insurance Company
XL Insurance America, Inc.
Church Mutual Insurance Company, S.I.
CorePointe Insurance Company
AmGUARD Insurance Company
Trumbull Insurance Company
Great American Alliance Insurance Co
California Insurance Company
Hartford Underwriters Insurance Company
American Casualty Company of Reading, PA
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Harleysville Insurance Company
National Surety Corporation
Samsung F & M Insurance Co, Ltd USB
American National Property & Casualty Co
Trans Pacific Insurance Company
American Select Insurance Company
EastGUARD Insurance Company
Great American Insurance Company
Great Northern Insurance Company
Westfield Insurance Company
Listed insurers might not conduct business in all domiciles.