Section 6620 Of Chapter 7. Appeal Proceedings From California Labor Code >> Division 5. >> Part 1. >> Chapter 7.

. Upon the filing of a petition for reconsideration, or having granted reconsideration upon its own motion, the appeals board may, with or without further proceedings and with or without notice affirm, rescind, alter, or amend the order or decision made and filed by the appeals board or hearing officer on the basis of the evidence previously submitted in the case, or may grant reconsideration and direct the taking of additional evidence. Notice of the time and place of any hearing on reconsideration shall be given to the petitioner and adverse parties and to such other persons as the appeals board orders.