Cal. Lab. Code § 53

Whenever in Section 1001 or in Part 1 (commencing with Section 11000) of Division 3 of Title 2 of the Government Code “head of the department” or similar designation occurs, the same shall, for the purposes of this code, mean the director, except that in respect to matters which by the express provisions of this code are committed to or retained under the jurisdiction of the Division of Workers’ Compensation, the State Compensation Insurance Fund, the Occupational Safety and Health Standards Board, the Occupational Safety and Health Appeals Board, or the Industrial Welfare Commission the designation shall mean the Division of Workers’ Compensation, the Administrative Director of the Division of Workers’ Compensation, the Workers’ Compensation Appeals Board, the State Compensation Insurance Fund, the Occupational Safety and Health Standards Board, the Occupational Safety and Health Appeals Board, or the Industrial Welfare Commission, as the case may be.