N.J. Stat. § 34:8A-8
No person shall act as a crew leader, nor shall any person employ a crew leader unless he possesses a current and valid certificate of registration issued by the Department of Labor and Industry. The application and certificate of registration forms shall be prescribed by the commissioner.
A certificate of registration shall expire at midnight on December 31 of the year for which it is granted unless sooner revoked or suspended by the commissioner. A certificate of registration may be renewed each year upon the filing of an application of renewal on a form prescribed by the commissioner. The certificate of registration, once issued, shall not be transferable, shall be kept by the registrant in his immediate personal possession and shall be displayed by the registrant upon request of the commissioner or any properly designated representatives of the commissioner or upon the request of the person by whom the crew leader is employed or upon the request of any seasonal farm worker or prospective seasonal farm worker.
Any person holding a valid certificate of registration pursuant to this act, or any regular employee of such a person, shall wear and display when engaging in activities as a crew leader such identification as the commissioner may require, showing such registration to be duly certified by the State and such regular employee to be the agent of such registrant.
Every such regular employee shall be subject to the provisions of this act and of any rules and regulations promulgated pursuant to this act to the same extent as if he were required to obtain a certificate of registration in his own name. For the purpose of this act, every registrant shall be responsible for the activities of every agent designated by him, and shall be subject to any penalties under this act, including the refusal, suspension or revocation of a certificate of registration, proceeding from any act of any agent designated by him, while such agent is engaged in activities as crew leader.
N.J.S. § 34:8A-8