N.J. Stat. § 34:15-8
Such agreement shall be a surrender by the parties thereto of their rights to any other method, form or amount of compensation or determination thereof than as provided in this article and an acceptance of all the provisions of this article, and shall bind the employee and for compensation for the employee's death shall bind the employee's personal representatives, surviving spouse and next of kin, as well as the employer, and those conducting the employer's business during bankruptcy or insolvency.
If an injury or death is compensable under this article, a person shall not be liable to anyone at common law or otherwise on account of such injury or death for any act or omission occurring while such person was in the same employ as the person injured or killed, except for intentional wrong.
N.J.S. § 34:15-8