N.J. Stat. § 43:10-59.4
A county probation officer of the county who, on the effective date of this act, is in active service and eligible to retire under this article shall, upon termination of the pension fund, be permitted to enroll in the Public Employees' Retirement System of New Jersey if the officer makes application for such enrollment not later than the 90th day following the termination. Within 120 days following the termination the county shall remit to the Public Employees' Retirement System all accumulated deductions standing to the credit of each officer so enrolled and shall remit the pro rata part of the county fund constituting the employer's account. Employees enrolled in the Public Employees' Retirement System pursuant to this act shall be members of the retirement system, and deductions from their salaries and contributions on their behalf shall be made as required by P.L. 1954, c.84 (C.43:15A-1 et seq.). Those employees shall have the same rights, benefits and obligations as all other members of the system. Any credit for public service which had been established in the terminated pension fund by those employees shall be established in the Public Employees' Retirement System. All outstanding obligations and arrearages shall be satisfied by a transferred employee as previously scheduled for payment to the terminated pension fund.
Upon enrollment of the employees in the Public Employees' Retirement System under the provisions of this act, the rate of contribution of each such newly enrolled member of the retirement system shall be determined by the rates payable by other members, except that the number of years of credited service in the terminated pension fund shall be deducted from the member's current age at the time of enrollment in order to fix the age upon which the rate of contribution is based.
The actuary of the Public Employees' Retirement System under this act shall calculate the difference, for each employee enrolled in the retirement system under this act, between the amounts transferred as provided herein and the amounts necessary to provide all benefits to which the employee shall be entitled upon such enrollment. The employer of the employee shall be liable to the retirement system for the full amount of that difference. Upon certification by the actuary of the Public Employees' Retirement System, each employer shall make such contributions as are required in order to meet the financial obligation. The chief fiscal officer of each employer shall transmit to the retirement system such information as the system shall require in order for the New Jersey State Division of Pensions and Benefits to comply with the provisions of this act.
N.J.S. § 43:10-59.4