N.J. Stat. § 40A:5-20
Whenever any official ceases to hold office in any local unit, on the day of the expiration of his term of office, he shall forthwith deliver to the clerk of the local unit, or other person who may be designated by the governing body to receive the same, all moneys, papers, books, memoranda, accounts and any data of any nature whatever pertaining to his office.
On failure or refusal to carry out the provisions of this section within 5 days after the expiration of his term, he shall, on notice in writing of such delinquency from the chief executive officer of the local unit, be subject to a penalty of $50.00 for each day of refusal or neglect to comply therewith. The penalty shall be collected by the local unit in an action at law.
N.J.S. § 40A:5-20