New Jersey Statutes Title 2A. Administration of Civil and Criminal Justice 2A § 44-139

The claimant first bringing an action for the enforcement of his claim in the superior court as provided by this article, shall make parties to the action all who have filed claims, the contractor, the subcontractor referred to in the claims, and the public agency with whom the contract was made.  If the public agency is not a corporation, then the county or municipality under which it is constituted shall be made a party defendant.