N.J. Stat. Ann. § 2A:82-41

Any person against whom a claim is asserted for compensation or damages for personal injuries or death resulting from personal injuries, either under the workmen's compensation act of the state of New Jersey, chapter fifteen of Title 34 of the Revised Statutes, or at law, or his insurance carrier, shall be permitted to examine the records of a hospital in reference to such injured or deceased person.