N.J. Stat. Ann. § 43:10-102

A fund shall be created in the following manner for the purpose of paying such pensions, to wit: There shall be deducted from every payment of salary to each court interpreter, three per centum (3%) of the amount thereof; then there shall be contributed annually by the county the amount equivalent to three per centum (3%) of said interpreter's salaries; to said fund there shall be added all moneys donated for the purpose of such fund, and all rewards which may be paid to any court interpreter while acting as such court interpreter, all of which moneys and rewards shall be paid over to the board of chosen freeholders of the county to be deposited in such fund.