Skip to Main Content

This information is provided free of charge by the Department of Industrial Relations from its web site at These regulations are for the convenience of the user and no representation or warranty is made that the information is current or accurate. See full disclaimer at
Chapter 4.5. Division of Workers' Compensation
Subchapter 2. Workers' Compensation Appeals Board--Rules and Practice Procedure
Article 11. Evidence

Return to index
New query

§ 10670. Documentary Evidence.

The filing of a document does not signify its receipt in evidence and, except for the documents listed in rule 10803, only those documents that have been received in evidence shall be included in the record of proceedings on the case.
(a) Certified copies of reports or records of any governmental agency, division or bureau shall be admissible in evidence in lieu of the original reports or records.
(b) The Workers' Compensation Appeals Board may decline to receive in evidence:
(1) Any document not listed on the Pre-Trial Conference Statement.
(2) Any document not served at or prior to the mandatory settlement conference, unless good cause is shown.
(3) Any document not filed 20 days prior to trial, unless otherwise ordered by a workers' compensation judge or good cause is shown.
(4) Any physician's report that does not comply with Labor Code section 4628 unless good cause has been shown for the failure to comply and, after notice of non-compliance, compliance takes place within a reasonable period of time or within a time prescribed by the workers' compensation judge.
(5) Any report that does not comply with the verification requirements of Labor Code section 5703(a)(2)or 5703(j)(2).
(c) Except as provided by rule 10677(a), no “original” business records, medical records or other documentary evidence shall be filed with the Workers' Compensation Appeals Board. Only a photocopy or other reproduction of an original document shall be filed.
(d) Where a willful suppression of evidence is shown to exist, it shall be presumed that the evidence would be adverse, if produced.
Note: Authority cited: Sections 133, 5307, 5309 and 5708, Labor Code. Reference: Sections 126, 4628, 5316, 5500, 5501, 5703, 5708 and 5813, Labor Code.
1. New article 11 heading and new section filed 12-17-2019; operative 1-1-2020. Submitted to OAL for printing only pursuant to Government Code section 11351 (Register 2019, No. 51).
2. New subsection (c), repealer of subsection (d) and subsection relettering filed 12-15-2021; operative 1-1-2022 pursuant to Government Code section 11343.4(b)(3). Submitted to OAL for filing and printing only pursuant to Government Code section 11351 (Register 2021, No. 51).

Go BackGo Back to Article 11 Table of Contents