Company Information Company History: Union Insurance, based in Lincoln, Nebraska, is one of more than 30 property and casualty insurance company subsidiaries of W.R. Berkley Corporation, a publicly traded company based in Greenwich, Connecticut, which operates in the U.S. and internationally. Union Insurance Company is the successor to a mutual company formed in 1886. It was acquired by the W.R. Berkley Corporation in 1974. Union Insurance Company had direct premiums written in 2005 of $151 million with the largest contributors being commer ...