N.J. Stat. § 17:29A-3
Every rating organization shall make reasonable provision in its bylaws, rules, constitution, or otherwise, to permit any insurer engaged in the kind of insurance for which rate-making is done by such rating organization, to become a member thereof, or a subscriber for any kind of insurance or subdivision of a kind of insurance found by the commissioner to be a proper basis for service by the rating organization upon application therefor by such insurer. No insurer shall be a member of or a subscriber to more than one rating organization for the purpose of making rates for the same kind or for the same subdivision of a kind of insurance. No rating organization shall discriminate unfairly between insurers in the condition imposed for admission as subscribers, or in the services rendered to either members or subscribers. The refusal of any rating organization to admit an insurer as a subscriber shall, at the request of such insurer, be reviewed by the commissioner at a hearing held upon at least 10 days' notice to such rating organization and such insurer. If the commissioner shall find that the insurer has been refused admittance to such rating organization as a subscriber without justification, he shall make an order directing such rating organization to admit such insurer as a subscriber. If he shall find that the action of the rating organization in refusing admittance to an insurer as a subscriber is justified, he shall make an order affirming its action.
N.J.S. § 17:29A-3