N.J. Stat. § 17:45-1
For the purpose of this chapter a mutual benefit association is hereby declared to be a corporation, society or voluntary association, other than a fraternal beneficiary society, order, or association and other than an insurance corporation, organized without capital stock, and carried on for the sole benefit of its members who shall be residents of this State and their beneficiaries and not for profit, and making provision for the payment of benefits in case of sickness, disability or death of its members, the fund from which the payment of such benefits shall be made and the fund from which the expenses of such association shall be defrayed being derived from fees, dues, assessments or other contributions collected from its members.
N.J.S. § 17:45-1