N.J. Stat. Ann. § 43:16A-17.1

19. If possible, whenever any beneficiary shall, in writing, request the board of trustees to make deductions from his retirement allowance or pension for the purpose of paying premiums for the pensioners' group health insurance plan or the State Health Benefits program, the board may make such deductions and transmit the sums so deducted to the companies carrying the policies. Any such written authorization may be withdrawn by any beneficiary upon filing notice of such withdrawal with the division.