The PMA Insurance Group Names Eric Reiner, Assistant Vice President,
Central Region Claims

Blue Bell, Pennsylvania, June 12, 2006 -- The PMA Insurance Group is pleased to announce that Eric Reiner has been appointed Assistant Vice President, Central Region Claims. In his new role, Mr. Reiner will lead PMA's Insurance Claims Operation in Central and Western Pennsylvania, Maryland and Washington, DC.

"We are extremely pleased to have Eric leading our Central Region insurance claims operations," said Kurt Schuhl, Senior Vice President and Chief Claims Officer, The PMA Insurance Group. "Eric is a seasoned claims executive with a proven track record of leadership. I am confident that under Eric's guidance, our Central Region insurance clients will continue to receive the timely, high quality service for which PMA is renowned."

Mr. Reiner, who was previously Regional Claims Manager, Harrisburg, The PMA Insurance Group, joined the company in 1988 as a Senior Account Claims Representative. During his seventeen-year tenure with PMA, he has held several positions of increasing responsibility, including Regional Claims Supervisor, Claims Manager, and Corporate Liability Specialist. He began his insurance claims career in 1985.

Mr. Reiner earned a Bachelor of Science degree in Political Science from James Madison University, Harrisonburg, Virginia. He earned the Associate in Claims (AIC) designation and the Chartered Property & Casualty Underwriter (CPCU) designation.

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.

With offices from New York to Florida and west to Tennessee, The PMA Insurance Group is headquartered in Blue Bell, Pennsylvania. The PMA Insurance Group includes Pennsylvania Manufacturers' Association Insurance Company, Manufacturers Alliance Insurance Company and Pennsylvania Manufacturers Indemnity Company, which are subsidiaries of PMA Capital Corporation (NASDAQ: PMACA).