N.J. Stat. § 40:37-161
If any member of the police force, who is a member of said fund, in good standing shall voluntarily retire therefrom and his resignation be accepted, the commission shall return to him all the assessments which he has paid into the fund; and in case of the death of any such member of the police force, while in the employ of the commission, whose death did not occur in the performance of duty and who at his death was not receiving a pension as provided for in sections 40:37-157 to 40:37-168 of this Title, the commission shall return to his legal representatives all the assessments by him paid into the fund if he left no widow or minor child or children surviving him, but if he left a widow surviving him the park commission shall pay the widow of any such member, an annual pension equal to 1/2 of the average annual salary being paid such member for the last 3 years of his employment prior to the time of his death, under the same terms and conditions as prescribed for widows of members of the police force or department retired and pensioned as provided in section 40:37-165 of this Title.
N.J.S. § 40:37-161