Any hearing required by this act to be held before the department shall be held before the commissioner or a member of the department designated by him, who shall have power to subpoena witnesses and compel their attendance, administer oaths and require the production for examination of any books or papers relating to any matter under investigation in any such hearing. The department, at the request of any respondent to a complaint made by it, or to it, pursuant to this act, shall subpoena and compel the attendance of such witnesses as the respondent may designate and require the production for examination of any books or papers relating to any matter under investigation in any such hearing.
N.J.S. § 13:1G-13