N.J. Stat. Ann. § 17:9A-282

If the commissioner doubts the justice or validity of any claim made pursuant to sections 280 or 281, he shall reject it or shall allow it in the amount that he deems proper and shall serve notice of his action upon the claimant, either personally or by mail. An affidavit of service of such notice shall be filed in the department. An action upon such part of the claim as is rejected shall be brought within three months after such service, unless the commissioner, or the Superior Court, for cause shown, shall grant an additional period of time, not exceeding three months, and, if not brought within any period herein limited, shall thereafter be forever barred. A statement of the claimant's rights under this section shall be included in every notice of rejection.