Cal. Code Regs. tit. 8, § 371.2
(a) Amendment of a citation or appeal is permitted in the following circumstances so long as any party opposing the amendment has an opportunity to demonstrate any prejudice that the requested amendment will create. In determining whether prejudice is shown by a party opposing an amendment, consideration shall be given to the specific evidence that the opponent of the amendment would be unable to present because of the timing of the request, if the amendment were granted.
(2) A request for an amendment that causes prejudice to the opposing party shall be granted if one of the following circumstances apply:
(A) In the case of a request filed and served at least 20 days before the hearing:
(B) In the case of a request brought less than 20 days before the hearing or during a hearing:
(b) Amendment of a citation or an appeal is not permitted when:
Note: Authority cited: Section 148.7, Labor Code. Reference: Section 11507, Government Code; and Sections 6317 and 6603(a), Labor Code.
1. New section filed 10-30-92; operative 11-30-92 (Register 92, No. 44).
2. Amendment of section heading and subsection (b) filed 8-16-99; operative 9-15-99 (Register 99, No. 34).
3. Amendment of subsection (a) filed 11-26-2007; operative 12-26-2007 (Register 2007, No. 48).
4. Amendment of section heading and repealer and new section filed 4-15-2013; operative 7-1-2013 (Register 2013, No. 16).
5. Amendment of subsections (a)(2)(A)(iii)-(iv) and (a)(2)(B)(iii) filed 8-2-2016; operative 10-1-2016 (Register 2016, No. 32).