| AAA |
| Acclamation |
| Advance Auto Parts |
| Advantage Workers Comp |
| AIG Primary |
| AIG Select |
| Alaska Airlines |
| Allianz Global Risk US Insurance Co |
| Allianz Resolution Management |
| Allied Managed Care |
| Alsco Inc |
| Alternative Service Concepts , LLC |
| American Guarantee & Liability Company |
| American Liberty |
| American Zurich Insurance |
| Amguard Insurance Co. |
| Amtrust |
| Anthem |
| Anthem Premier |
| Anthem Premier Plus |
| Anthem Workers' Comp |
| Applied Underwriters |
| Arch Insurance |
| Argo Group |
| AT&T Wireless |
| Athens (Anthem) |
| Baron Technical |
| Benchmark Insurance Co |
| Berkley Specialty Underwriting |
| Berkley Specialty Underwriting MGMT |
| Berkshire Hathaway Guard |
| Berkshire Hathaway Homestate Co |
| Bridgestone / Firestone |
| Cajon Valley Union School District |
| California JPIA |
| Caltrans |
| CAN |
| Cannon Cochran Management Services , Inc. (CCMSI) |
| Charles Taylor Insurance General Agency Inc |
| Cheesecake Factory |
| Church Mutual |
| CIGA |
| Civic Property & Casualty |
| Coca Cola |
| Continental Casualty Co |
| CorVel |
| Coventry |
| Coventry Integrated |
| Creative Risk Solutions |
| Cypress Insurance Company |
| Del Monte Foods |
| Del Taco |
| Diamond Insurance |
| Directors Guild of America, Inc. |
| E&J Gallo Winery |
| Ecolab |
| Eggo Company |
| Endurance Reinsurance Corp of America |
| Endurance Corp of America |
| Exact Property & Casualty |
| Executive Risk Indemnity |
| Express |
| Farmers |
| Federal Express Corp. |
| Fire Insurance Exchange |
| Fireman's Fund |
| Florists Mutual Insurance |
| Fox Transportation |
| Frates & Co. |
| G&M Plastering |
| Gallagher Bassett |
| Gallagher Bassett First Health |
| Gap |
| General Electric Insurance Co |
| Guard Insurance |
| Guideone |
| Hall Ambulance |
| Hankey Group |
| Hanover Insurance |
| Harbor Health Systems / Genex H 1 |
| Harbor Health Systems / Genex H 2 |
| Harbor Health Systems / Genex H 3 |
| Harvest Farms |
| Healthsmart |
| Hendrick Automotive group |
| Hometown Buffet |
| Hortica MPN |
| Indemnity Insurance Co of North America |
| Insurance Co of The West ( ICW Group ) |
| Intermed Select |
| John Deere |
| JT Wimsatt |
| Kaiser/ Harbor |
| Keenan Prime Plus |
| Kemper |
| Kenan Advantage |
| Kraft / Heinz Foods |
| Kroger/ Food 4 less |
| L'Oréal USA, Inc. |
| Langham Hotel & Resort |
| Leprino Foods |
| Lincoln General Insurance |
| LWP Claims Solutions Premier |
| LWP Claims Solutions Prosight |
| LWP Signature |
| LWP Signature MPN |
| Mailboxes Etc. |
| Markel Rising / Rising Select MPN |
| Marquee Managed Care Solutions |
| Marquee Managed Care Solutions Plus |
| Merchants Building Maintenance |
| Mid Century Insurance |
| Midwest Insurance |
| Midwestern Insurance Alliance select |
| Mitsui Select |
| Monument |
| Munich Reinsurance |
| National Interstate |
| National Liability & Fire Ins. Co. |
| Netflix Inc |
| Networks By Design |
| New York Marine & General Insurance |
| North American Risk Select |
| North Bay Schools Ins. Authority |
| Oak River Insurance Co |
| Office Depot |
| Old Republic Insurance |
| One Beacon Insurance |
| Optum |
| Optum Auto |
| Optum Workers Compensation |
| Optum's Procura PPO Network |
| Oracle America |
| Pacific Claims Management |
| Pacific Comp |
| Pacific Employers Ins Co |
| Packard Claims |
| Pennsylvania Manufacturers Indemnity Co. |
| Pinnacle |
| Pitman Family Farms |
| Pizza Hut |
| PMA Companies/ Primary |
| Prime Plus |
| Pro Comp MPN |
| Procura |
| Procura Management |
| Promesa Health MPN |
| Property & Casualty Ins. Co. of Hartford |
| Prospect Medical Holdings |
| Protective Ins. Co. |
| Republic Indemnity |
| Safety National Casualty Corp |
| Sierra Health & Life |
| Signature Networks Golden |
| Signature Networks Sterling |
| Silverado MPN |
| State Compensation Ins. Fund (SCIF) |
| T.J. Maxx |
| The Ritz Carlton |
| Three Rivers |
| Travelers Property Casualty Co. of America |
| Tristar Plus |
| Tristar Prime |
| Truck Insurance Exchange |
| United States Fire Insurance |
| Vanliner Insurance |
| Vista Paint |
| Volt Information Sciences |
| WCF National Ins. Co. |
| Western Integrated |
| William Bolthouse |
| Winward Life Care |
| Xerox |
| Yolo County Public Agency Risk |
| Zelis |
| Zurich North America |
| Zurich North America ZCS |
| Zurich North America ZSC Select MPN |
| Zurich Services Corp Prudent Buyer |