N.J. Stat. Ann. § 45:15C-26

16. Whenever it shall appear to the board or the Department of Environmental Protection that a person has engaged in, or is engaging in, any unlawful activity under the provisions of this act, the person may be required to file, on a form prescribed by regulation, a statement in writing under oath as to the facts and circumstances concerning the rendering of any service or other violation of this act. The board or the department may examine any person in connection with any act or practice subject to the act, inspect any premises upon which any violation is alleged to have taken place or premises that constitute the licensee's place of business, and examine any record, book, document, account or paper maintained by or for any licensee in the conduct of his business.