N.J. Stat. § 48:3-44
A new identification badge shall be made and issued by the public utility from time to time to reflect any substantial changes in the employee's appearance, but in any case, a new badge shall be issued at least once every 6 years. Each new identification badge shall contain a new color photograph of the employee's face and said photograph shall be taken not more than 2 weeks before the date upon which the new identification badge is issued.
A new identification badge shall also be issued to an employee whenever the facial appearance of said employee undergoes a noticeable alteration. For the purposes of this act, "noticeable alteration" means a change in the facial appearance such as, but not limited to, a change in hair color, style, shape or length, the growth, alteration or removal of beards, goatees, mustaches or sideburns, the wearing of spectacles or contact lenses in lieu of spectacles previously worn, or a major change caused by an accident or surgery.
N.J.S. § 48:3-44