N.J. Stat. § 43:15A-42
A member, under 60 years of age, who has 10 or more years of credit for New Jersey service, shall, upon the application of the head of the department in which he shall have been employed or upon his own application or the application of one acting in his behalf, be retired for ordinary disability by the board of trustees. The physician or physicians designated by the board shall have first made a medical examination of him at his residence or at any other place mutually agreed upon and shall have certified to the board that the member is physically or mentally incapacitated for the performance of duty and should be retired.
The service requirement provisions of this amendatory and supplementary act shall not become effective for 5 years following the effective date of the act.
No person who becomes a member of the retirement system on or after the effective date of P.L. 2010, c. 3 shall be eligible for retirement pursuant to this section.
N.J.S. § 43:15A-42