Three New York specialty contractors and a reinsurance carrier have filed racketeering lawsuits against what they claim is a network of law firms, medical practices and members of a single Queens, N.Y., family that defrauded the insurer and firms in workers compensation claims over phony and staged workplace accidents.

The newest lawsuit, filed in federal district court in New York City by reinsurer Ionian Re expands the list of defendants to include the family and three building restoration and waterproofing contractors, Skyline Restoration Inc., Urban D.C. Inc. and DNA Contracting & Waterproofing as plaintiffs.