The PMA Insurance Group Enters Into an Agreement to be the Workers' Compensation Insurance Provider for the Wholesalers Insurance Plan

Blue Bell, Pennsylvania, June 17, 2006 -- The PMA Insurance Group has entered into an agreement to be the workers' compensation insurance provider for the Wholesalers Insurance Plan (WIP), offered by American Wholesalers Underwriting, Ltd. of Stamford, Connecticut.

The WIP is a national insurance program dedicated to servicing the risk management needs of the durable goods wholesaler/distribution industry. The industry includes wholesale operations ranging from automotive, electrical and plumbing to HVAC, medical supplies and industrial parts and material handling equipment. Through the WIP, durable goods wholesalers can obtain workers' compensation, property, inland marine, auto liability, general liability and umbrella insurance in a single program.

WIP's workers' compensation product is now being underwritten by The PMA Insurance Group, rated A- (excellent) by A.M. Best.

"PMA is very pleased to bring its workers' compensation products and services to the WIP program," says John Santulli, Senior Vice President, Marketing & Field Operations, The PMA Insurance Group. "We have extensive experience in underwriting and servicing wholesalers and look forward to bringing our expertise to this program."

Agents and brokers can obtain more information on the WIP by contacting: Mike Ebert, Manager of Program Development, The PMA Insurance Group, (717) 730-8116 or email: Mike_Ebert@pmagroup.com or contact your local PMA Branch Office.

The PMA Insurance Group, a multi-lines property and casualty insurer specializing in workers' compensation, is known for service excellence and high levels of customer satisfaction. In addition to workers' compensation, PMA offers commercial automobile, commercial multi-peril, general liability and umbrella insurance.

The PMA Insurance Group is headquartered in Blue Bell, Pennsylvania and includes Pennsylvania Manufacturers' Association Insurance Company, Manufacturers Alliance Insurance Company and Pennsylvania Manufacturers Indemnity Company, which are subsidiaries of PMA Capital Corporation (NASDAQ: PMACA).

American Wholesalers Underwriting, Ltd. (AWUL) is a nationally recognized Program Administrator, Underwriter and Wholesaler serving Retail Insurance Agencies. AWUL is a recognized leader in various segments of the property and casualty insurance industry. Notably, through its Wholesalers Insurance Plan (WIP), they have underwritten insurance products for durable and non-durable goods wholesalers/distributors for over 12 years.

For more information on the WIP program, please visit www.awul.com or call John Shea, Vice President, AWUL, 1(800) 303-4321