The commissioner is authorized to incur such necessary expenses, and engage and appoint an executive officer and such competent and expert advisors, and clerical and stenographic assistants and investigators, as he may deem necessary to the proper performance of the purposes of this act, and may fix their compensation within the limits of any sums appropriated or made available to the commissioner for such purposes. No investigator employed by the commissioner need be employed in accordance with the provisions of, or in any manner shall be subject to, the provisions of Title 11, Civil Service, of the Revised Statutes.
N.J.S. § 5:8-94