New Jersey Statutes Title 40A. Municipalities and Counties 40A § 14-127.3

The Board of Trustees of the Police and Firemen's Retirement System of New Jersey shall accept as a member of the retirement system any policeman otherwise eligible for membership appointed pursuant to section 1 of P.L.1979, c. 461 (C.40A:14-127.1), provided that he shall contribute to the retirement system at a rate based on his current age at the time of reenrollment; except that in the case where reappointment occurs within two years following the person's separation and such person has not withdrawn his contributions from the retirement system pursuant to section 11 of P.L.1944, c. 255 (C.43:16A-11), the person's rate of contribution upon reappointment shall be the same as it was at the time of separation.