N.J. Stat. Ann. § 26:2J-29

Any employee of the State or any subdivision of the State or any institution supported in whole or in part by the State may elect to enroll in a health maintenance organization and have all deductions from his salary or wages and all contributions being paid by his employer to any health insurer paid instead to a health maintenance organization; provided, however, in no event, shall an employer under this section make a contribution to any alternative health benefits program greater than the contribution being made to any health plan pursuant to a contract in existence on the effective date of this act. Any such employee shall at least annually be allowed to choose an alternative health benefits program made available through his employer.