N.J. Stat. Ann. § 45:14C-17

The State board shall, upon application to it and the payment of the prescribed fee, issue a State master plumber's license without examination to any person who, within 6 months following the effective date of this act, submits satisfactory evidence that he has been employed or engaged in the business of plumbing for 5 years prior to the date of his application for a State license. The persons entitled to State license under this provision of this act shall comply with the remaining provisions of this act.