N.J. Stat. § 40A:14-62
Whenever any person possessing an exempt fireman certificate holds an office, position or employment under a commission elected or appointed by the governing bodies of 2 or more municipalities, whose term of such office, position or employment is not fixed by law, the said person shall hold his office, position or employment during good behavior and shall not be removed therefrom for political reasons but only for good cause after a fair and impartial hearing.
No such commission shall abolish, change the title or reduce the emoluments of any office, position or employment held by an exempt fireman for the purpose of terminating his said service.
For the herein purposes no term of office, position or employment of any such person shall be deemed to be fixed by law or coterminous with that of a noncontinuous appointing or employing board or body.
N.J.S. § 40A:14-62