California Code, Labor Code - LAB § 148

(a) There is in the Department of Industrial Relations the Occupational Safety and Health Appeals Board, consisting of three members appointed by the Governor, subject to the approval of the Senate. One member shall be from the field of management, one shall be from the field of labor and one member shall be from the general public. The public member shall be chosen from other than the fields of management and labor. Each member of the appeals board shall devote his full time to the performance of his duties.

(b) The chairman and each member of the appeals board shall receive the annual salary provided for by Chapter 6 (commencing with Section 11550) of Part 1 of Division 3 of Title 2 of the Government Code.

(c) The Governor shall designate the chairman of the appeals board from the membership of the appeals board. The person so designated shall hold the office of chairman at the pleasure of the Governor. The chairman shall designate a member of the appeals board to act as chairman in his absence.