When a complaint mentioned in section 4:12-14 of this title is filed with the secretary, he shall attempt to secure an explanation or adjustment, and, failing this within ten days, he shall cause a copy of the complaint, together with a notice of the time and place for a hearing thereon, to be served personally or by mail upon the applicant or licensee. If served by mail, the complaint and notice shall be directed to the applicant or licensee at his place of business, with postage prepaid thereon. Such service shall be made at least seven days before the hearing.
At the time and place appointed for the hearing, the secretary, or any of his assistants, shall hear the parties to the complaint, may administer oaths and shall enter in the records of the office of the secretary a decision either dismissing the complaint or specifying the facts which he deems established on the hearing.
N.J.S. § 4:12-15