- Accident Fund Insurance Company
- AIG
- American Interstate
- Amerisure
- Auto-Owners
- BITCO Insurance Companies
- Builders
- Cincinnati Insurance Companies
- CNA
- Encompass
- FCCI
- Great American
- Hanover
- Hartford
- Liberty Mutual
- Montgomery
- Selective
- State Auto
- Travelers P&C
- Washington Nat'l.
- Westfield Insurance
- Zurich