- Accident Fund Insurance Company
- Aetna
- Allstate
- American Fidelity
- Amerisafe
- AmTrust
- Anthem
- Assurant
- Auto-Owners
- Benefit Plan Administrators, Inc.
- Berkley Mid-Atlantic Group
- Brethren Mutual
- Builders Mutual Insurance
- Chubb
- Cigna
- Cincinnati Insurance Companies
- CNA
- Colonial Life
- Companion Life
- Coventry
- Dearborn Natl.
- Delta Dental
- Donegal
- Eastern Ins. Holdings
- EMC
- Employers
- Glatfelder
- Great American
- Guard
- Guardian
- GuideOne
- Hanover
- Hartford
- Humana
- Kansas City Life
- Key Risk
- Liberty Mutual
- Lincoln Financial Group
- Loudoun Mut.
- MEMIC
- MetLife
- MMG
- Mut. Assurance
- Nationwide
- Northern Neck
- Optima Health
- Philadelphia
- Piedmont Community
- PLM
- Principal
- Progressive
- Prudential
- Reliance Std.
- Rockwood Cas.
- Selective
- Sun Life
- The Standard
- Travelers
- United Educators
- United Healthcare
- VCGSIA
- VFIS