N.J. Stat. § 53:5A-38
There shall be deducted from the payroll of each active member of the system 7 1/2% of the amount of his salary, which shall be turned over to the State Treasurer and be credited by him to the account of the State Police Retirement System. Members of the retirement system shall contribute 9% of salary to the system on and after the effective date of P.L. 2011, c. 78.
The deductions provided for herein shall be made notwithstanding that the minimum salary provided for by law for any member shall be reduced thereby. Every member shall be deemed to consent and agree to the deductions made and provided for herein, and payment of salary or compensation less said deductions shall be a full and complete discharge and acquittance of all claims and demands whatsoever for the service rendered by such person during the period covered by such payment, except as to the benefits provided under this act.
N.J.S. § 53:5A-38