Section 121 Of Chapter 5. Division Of Workers’ Compensation From California Labor Code >> Division 1. >> Chapter 5.

. The chairman of the appeals board may authorize its secretary and any two assistant secretaries to act as deputy appeals board members and may delegate authority and duties to these deputies. Not more than three deputies may act as appeals board members at any one time. No act of any deputy shall be valid unless it is concurred in by at least one member of the appeals board.