(a) The department, in consultation with the board, shall employ two persons who are not members of the board. One shall serve as the executive secretary of the board. The other shall serve as investigator for the board. The executive secretary is the principal executive officer of the board and is in the partially exempt service under AS 39.25.120.
(b) The executive secretary of the board shall perform duties as prescribed by the board.
(c) The investigator employed under (a) of this section

(1) shall conduct investigations into alleged violations of this chapter and into alleged violations of regulations and orders of the board;
(2) shall, at the request of the board, conduct investigations based on complaints filed with the department or with the board; and
(3) is directly responsible and accountable to the board, except that only the department has authority to terminate the investigator’s employment, and the department shall provide day-to-day and administrative supervision of the investigator.