Workers' compensation

* American International Group (AIG)
    * Erie Insurance Group
    * Hanover Insurance
    * The Hartford
    * Liberty Mutual
    * Merchants Insurance Group
    * Missouri Employers Mutual
    * Nationwide Mutual Insurance Company
    * Penn National Insurance
    * Sentry Insurance
    * State Accident Insurance Fund
    * State Farm Insurance
    * WellPoint
    * Zenith Insurance Company

Travel insurance

* Access America, a brand of Mondial Assistance Group
    * International Medical Group
    * Seven Corners, Inc.
    * Travel Guard

Supplemental health insurance

* Allstate
    * MEGA Life and Health Insurance
    * State Farm Insurance

Supplemental insurance

* Aflac
    * Allstate
    * American Fidelity Assurance
    * Colonial Life & Accident Insurance Company
    * Conseco
    * Liberty National Life Insurance Company
    * Mutual of Omaha

Medicare

* Aetna
    * American Family Insurance
    * Bankers Life and Casualty
    * Conseco
    * Mutual of Omaha
    * Premera Blue Cross
    * Thrivent Financial for Lutherans

Health insurance (major medical insurance)

* AARP
    * Aetna
    * American Family Insurance
    * American National Insurance Company
    * Amerigroup
    * Anthem Blue Cross and Blue Shield
    * Assurant
    * Blue Cross and Blue Shield Association
    * Celtic Insurance Company, subsidiary of Centene Corporation
    * Centene Corporation
    * Cigna
    * Coventry Health Care
    * EmblemHealth
    * Fortis
    * Golden Rule Insurance Company
    * Group Health Cooperative
    * GHI
    * Health Net
    * HealthMarkets
    * HealthSpring
    * Highmark
    * Humana
    * Independence Blue Cross
    * Kaiser Permanente
    * LifeWise Health Plan of Oregon
    * Medical Mutual of Ohio
    * Molina Healthcare
    * Premera Blue Cross
    * Principal Financial Group
    * The Regence Group
    * Shelter Insurance
    * Thrivent Financial for Lutherans
    * UnitedHealth Group
    * Unitrin
    * Universal American Corporation
    * WellCare Health Plans
    * WellPoint

Annuity

 * Allstate
    * American Family Insurance
    * American Fidelity Assurance
    * Amica Mutual Insurance
    * Aviva
    * AXA Equitable Life Insurance Company
    * Bankers Life and Casualty
    * Conseco
    * Farmers Insurance Group
    * Fidelity
    * Genworth Financial
    * ING Group
    * Jackson National Life
    * John Hancock Insurance
    * MetLife
    * Mutual of Omaha
    * Nationwide Mutual Insurance Company
    * Old Mutual
    * Pacific Life
    * Protective Life
    * Prudential Financial
    * Standard Insurance Company
    * State Farm Insurance
    * Thrivent Financial for Lutherans
    * TIAA-CREF
    * Transamerica Corporation
    * UNIFI Companies
    * United of Omaha

insurance companies

 * 21st Century Insurance
    * AccuQuote
    * Alleghany Corporation
    * Allied Insurance
    * Allstate
    * American Automobile Association
    * American Family Insurance
    * American Income Life Insurance Company
    * American International Group (AIG)
    * American National Insurance Company
    * Amica Mutual Insurance
    * Aon Corporation
    * Assurant
    * Auto-Owners Insurance
    * AXA Equitable Life Insurance Company
    * Bankers Life & Casualty Company
    * Berkshire Hathaway
    * California Casualty
    * Capital Insurance Group
    * CNA Financial
    * Colonial Life & Accident Insurance Company
    * Commerce Insurance Group
    * Conseco
    * Country Financial
    * Chartis
    * Chubb Corp.
    * Encompass
    * Erie Insurance Group
    * Esurance
    * Everest Re Group
    * Evergreen USA RRG
    * Farmers Insurance Group
    * Federated Mutual Insurance
    * GAINSCO
    * GEICO
    * General Re
    * Genworth Financial
    * GMAC Insurance
    * Hanover Insurance
    * The Hartford
    * HCC Insurance Holdings
    * Hereford Insurance Company
    * Infinity Property & Casualty Corporation
    * International Fidelity Insurance Company
    * Jackson National Life
    * John Hancock Insurance
    * Kemper Insurance
    * Knights of Columbus Insurance
    * Liberty Mutual
    * Markel Corporation
    * Merchants Insurance Group
    * Mercury Insurance Group
    * MetLife
    * Mutual of America
    * Mutual of Omaha
    * Nationwide Mutual Insurance Company
    * New Jersey Manufacturers Insurance Company
    * New York Life Insurance Company
    * OneBeacon
    * Pacific Life
    * PEMCO
    * Penn Mutual
    * Principal Financial Group
    * Progressive
    * Protective Life
    * Prudential Financial
    * The Regence Group
    * Reliance Insurance Company
    * Response Insurance
    * RLI Corp.
    * Safe Auto Insurance Company
    * Safeco
    * Safeway Insurance Group
    * Sentry Insurance
    * Selective Insurance
    * Shelter Insurance
    * Southern Aid and Insurance Company
    * Standard Insurance Company
    * State Farm Insurance
    * Swiss Re
    * Symetra
    * Tri-State Consumer Insurance Company
    * TIAA-CREF
    * The Travelers Companies
    * Uniguard - Headquarter in greater Seattle area
    * United Auto Insurance Company
    * Unitrin Direct Auto Insurance
    * Unum
    * Vantislife Insurance Company
    * USAA
    * Wawanesa Insurance USA (CA and OR)
    * Wells Fargo
    * West Coast Life
    * Western Mutual Insurance Group
    * Westfield Insurance
    * Western Reserve Life Insurance Company
    * White Mountains Insurance Group