- Accident Fund Insurance Company
- AIC
- Allstate
- AmTrust
- Ascent Underwriters
- Berkshire Hathaway GUARD
- CareFirst BlueCross BlueShield
- Chesapeake Employers Ins.
- Chubb
- Erie Insurance
- Foremost
- Hartford
- Kemper
- Lancer
- Liberty Mutual
- National General
- Progressive
- Selective
- Travelers
- United Healthcare