J. Blair Craig has left the insurance defense firm he helped found, Harper Waldon & Craig, and joined a plaintiffs’ firm that his son, Brian W. Craig, started with Harlan H.F. Wood at the beginning of the year.

Craig said he left Harper Waldon & Craig in February for Wood & Craig after 26 years because of “office politics,” but he declined to elaborate. His departure comes a year after another name partner, Thomas D. Harper, left Harper Waldon Craig, because its main client, State Farm Mutual Automobile Insurance Co., announced that it would shift from paying hourly rates to flat fees for much of its auto claims defense work.