- AIG
- Association Casualty
- Bankers
- Burns & Wilcox
- Chubb
- Columbia Insurance Group
- Employers
- Foremost
- Lexington
- Liberty Mutual
- Markel
- Mercury
- Nationwide
- Ohio Casualty
- Philadelphia
- Progressive
- Safeco
- Texas FAIR Plan
- Texas Mutual
- Travelers
- UPC
- USLI
- Utica National Insurance Group
- Western World
- Zurich