New Jersey Statutes Title 34. Labor and Workmen's Compensation 34 § 19-10

No employer or employer's agent, representative or designee may, except as provided in section 3 of this act,  1 require its employees to attend an employer-sponsored meeting or participate in any communications with the employer or its agents or representatives, the purpose of which is to communicate the employer's opinion about religious or political matters.

This act shall not be construed as prohibiting an employer from permitting its employees to voluntarily attend employer-sponsored meetings or providing other communications to the employees, if the employer notifies the employees that they may refuse to attend the meetings or accept the communications without penalty.