New Jersey Statutes Title 40A. Municipalities and Counties 40A § 9-1.3

Unless otherwise provided by law, the governing body of any local unit may by resolution or ordinance, as appropriate, require, subject to the provisions of this act, all officers and employees employed by the local unit after the effective date of this act to be bona fide residents therein. A bona fide resident for the purpose of this act is a person having a permanent domicile within the local unit and one which has not been adopted with the intention of again taking up or claiming a previous residence acquired outside of the local unit's boundaries. Any local unit wherein the provisions of Title 11 (Civil Service)  1 of the Revised Statutes are operative, shall transmit a copy of the adopting ordinance or resolution, as the case may be, to the Civil Service Commission.