Where this sits
- Chapter 4.5.
- Division of Workers' Compensation
- Subchapter 2. Workers' Compensation Appeals Board--Rules and Practice Procedure
- Article 5. Applications and Answers
The regulation, as printed
Authority and history
Note: Authority cited: Sections 133, 5307, 5309 and 5708, Labor Code. Reference: Sections 126, 5300, 5301, 5316, 5454, 5500 and 5501, Labor Code.
1. Amendment of section and Note filed 12-19-2002; operative 1-1-2003. Submitted to OAL for printing only pursuant to Government Code section 11351 (Register 2002, No. 51). 2. Amendment of section and Note filed 11-17-2008; operative 11-17-2008. Submitted to OAL for printing only (Register 2008, No. 47). 3. Amendment of section heading, section and Note filed 9-23-2013; operative 10-23-2013. Submitted as a file and print by the Workers' Compensation Appeals Board pursuant to Government Code section 11351 (Register 2013, No. 39). 4. New article 5 heading, renumbering of former section 10450 to section 10510 and new section 10450 filed 12-17-2019; operative 1-1-2020. Submitted to OAL for printing only pursuant to Government Code section 11351 (Register 2019, No. 51).
What panels did with this rule
Released decisions that named § 10450, with the passage each turned on. A panel decision persuades; it does not bind.
- ADJ9354045 · 2025-08-05 · Bakersfield District Office8 CCR § 10450
Determinative passage · p.4Next, defendant's argument that it accepted liability for injury to applicant's back and paid medical benefits and temporary disability is similarly unconvincing. As relevant here, WCAB Rule 10450 (Cal. Code Regs., tit. 8, § 10450) specifies that the jurisdiction of the Appeals Board is invoked by way of an application for "proceedings for the adjudication of rights and liabilities... and that no discovery may be conducted until the application is filed." That is, the purpose of the application is to give the Appeals Board the authority to adjudicate disputes, and it is based on the underlying assumption that disputes exist. Yet, defendant ignores that applicant filed an Application after the two letters of May 2013 and March 2014 that it refers to in support of its arguments that it accepted liability.
The Board noted that the application filed by applicant invoked jurisdiction and assumed disputes existed, countering defendant's argument that liability was accepted.
Official decision · page 4 → - ADJ3348532 · 2021-10-18 · Long Beach District Office8 CCR § 10450
Determinative passage · p.13In addition to the above, lien claimant, David Silver, MD's, Petition dated 3/18/2016 fails to comply with CCR § 10510(d) (formerly CCR § 10450(e)). The Petition dated 3/18/2016 is denied, therefore, based upon CCR § 10510(d).
Petition for Costs and Sanctions failed to comply with this regulation and was properly denied.
Official decision · page 13 →
Rules beside this one
Article 5. Applications and Answers — regulations rarely stand alone, and the answer is often two sections away.
- § 10451.1Determination of Medical-Legal Expense Disputes. [Repealed]6 decisions
- § 10451.2Determination of Medical Treatment Disputes. [Repealed]1 decisions
- § 10451.3Petition for Costs. [Renumbered]
- § 10451.4Petition to Enforce Independent Bill Review Determination. [Renumbered]
- § 10452Petition for Disqualification of Judge. [Renumbered]
- § 10453Petition for Automatic Reassignment of Trial or Expedited Hearing to Another Workers' Compensation Judge. [Renumbered]