N.J. Stat. § 53:5A-15.1
For the purposes of sections 12 d., 13 d., and 14 e. a member of the State Police Retirement System shall be deemed to be an active member for a period of no more than 93 days while on official leave of absence without pay when such leave is due to any reason other than illness, and for a period of not more than 1 year in the event of an official leave (a) to fulfill a residency requirement for an advanced degree, or (b) as a full-time student at an institution of higher education, and (1) while he is disabled due to sickness or injury arising out of or in the course of his employment as a member to whom this chapter applies, is not engaged in any gainful occupation, and is receiving or entitled to receive periodic benefits (including any commutation of, or substitute for, such benefits) for loss of time on account of such disability under or by reason of workmen's compensation law, occupational disease law or similar legislation and has not retired or terminated his membership; or (2) for a period of no more than 2 years while on an official leave of absence without pay if satisfactory evidence is presented to the retirement system that such leave of absence without pay is due to the member's personal illness other than an illness to which (1) above applies.
If a member dies within 30 days after the date of retirement or the date of board approval, whichever is later, a death benefit shall be payable only if he is deemed to be an active member in accordance with this section; provided, however, a member applying for disability benefits shall be deemed an active member if he was covered by the death benefit provisions of the act at the termination of employment, filed the application for disability retirement with the retirement system within 30 days following such termination of employment and dies within 30 days after the date of retirement or the date of board approval, whichever is later.
N.J.S. § 53:5A-15.1