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