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What Is California Labor Code §5950 (Writ of Review 45-Day Deadline)?
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By Eman Yazdchi, Esq. · Certified Specialist in Workers' Compensation Law, State Bar of California Board of Legal Specialization · Cal Bar #285231
Any person affected by an order, decision, or award of the appeals board may, within the time limit specified in this section, apply to the Supreme Court or to the court of appeal for the appellate district in which he resides, for a writ of review, for the purpose of inquiring into and determining the lawfulness of the original order, decision, or award or of the order, decision, or award following reconsideration. The application for writ of review must be made within 45 days after a petition for reconsideration is denied, or, if a petition is granted or reconsideration is had on the appeal board's own motion, within 45 days after the filing of the order, decision, or award following reconsideration.
What does Labor Code 5950 establish?
Labor Code 5950 provides the procedural gateway for taking a California workers' comp dispute to the Court of Appeal. The application must be filed within 45 days of the final WCAB order on reconsideration.
Labor Code 5950 is the writ deadline. It gives the Court of Appeal jurisdiction to review WCAB decisions for legal error. The 45-day clock starts from the WCAB's reconsideration order, not the original trial decision. Missing the deadline strips the court of jurisdiction. The WCAB decision becomes final and unreviewable in the state court system.
Eman Yazdchi is a Certified Specialist in workers' compensation law, certified by the California Board of Legal Specialization, State Bar of California. He handles Labor Code 5950 writ proceedings when legal error at the WCAB has produced an unjust result.
What does the Labor Code 5950 writ process involve?
The writ petition is filed with the Court of Appeal and asks the court to review the WCAB's final order for legal error. The writ is discretionary. The court can deny it summarily, without an explanation.
Most Labor Code 5950 writs are denied summarily. When the court grants the writ, it reviews the WCAB record. No new evidence is presented to the Court of Appeal. The review is limited to legal error: misapplication of law, lack of substantial evidence, denial of due process, or jurisdictional defects. Factual findings from the WCAB stand if supported by substantial evidence.
How does Labor Code 5950 relate to Labor Code 5903 reconsideration?
Reconsideration under Labor Code 5903 must be exhausted before filing a Labor Code 5950 writ. The reconsideration petition must be filed within 25 days of the workers' comp judge's decision. The writ follows if reconsideration is denied or decided adversely.
The sequence is strict. First, file a Labor Code 5903 Petition for Reconsideration with the WCAB within 25 days of the WCJ's decision (20 days if served electronically). Second, after the WCAB rules on reconsideration, file the Labor Code 5950 writ with the Court of Appeal within 45 days. Skipping reconsideration bars the writ.
What grounds support a Labor Code 5950 writ?
The Court of Appeal reviews for legal error: misapplication of law, lack of substantial evidence, due process violations, and jurisdictional defects. It does not retry the facts the WCAB decided on the record.
A Labor Code 5950 writ will not succeed simply because the outcome was unfavorable. The court must find that the WCAB applied the law incorrectly, ignored substantial evidence, or denied due process. Factual findings are reviewed deferentially. A wrong legal standard applied to correct facts is the most common successful ground for a writ.
How does Labor Code 5950 fit into the full California appellate framework?
The full appellate path runs three levels: Labor Code 5903 reconsideration at the WCAB, Labor Code 5950 writ to the Court of Appeal, and a discretionary petition for review at the California Supreme Court under Labor Code 5951.
Each level has its own deadline and standard. Reconsideration is 25 days from the trial decision (20 electronic). The writ is 45 days from the reconsideration order. Supreme Court review is discretionary and rarely granted. The WCAB decision is final and binding unless reviewed through this precise procedural sequence.
Related: California appeal pillar · Labor Code 5903 explainer.
Injured at work? Call (661) 273-1780
Tap to call →Eman Yazdchi is a Certified Specialist in workers' compensation law, certified by the California Board of Legal Specialization, State Bar of California. Yazdchi Law serves injured workers throughout Greater Los Angeles. We appear at the WCAB in Van Nuys, Los Angeles, Long Beach, Pomona, San Bernardino, Riverside, and Oxnard. Call (661) 273-1780 for a free case review.
Frequently Asked Questions
What happens if the 45-day Labor Code 5950 deadline is missed?
Missing the 45-day deadline under Labor Code 5950 strips the Court of Appeal of jurisdiction. The WCAB decision becomes final. It can no longer be reviewed by any state court. The deadline is jurisdictional, not merely procedural. California courts have consistently refused to extend it. Missing the deadline ends the appeal permanently.
Does the Labor Code 5950 writ review new evidence?
No. The Labor Code 5950 writ is limited to the record that was before the WCAB. The Court of Appeal does not hear new testimony or review new documents. Any evidence that was not submitted during the WCAB proceedings cannot be considered on writ review. The writ is a legal error check, not a second factual hearing.
How often does the Court of Appeal grant a Labor Code 5950 writ?
The Court of Appeal grants a full writ of review in a small fraction of cases filed. Most petitions are denied summarily without a written explanation. When the court does grant the writ, it proceeds to review the legal error alleged. Successful writs typically involve clear misapplication of statutory law or a denial of procedural due process at the WCAB.
Can a worker file a Labor Code 5950 writ without exhausting reconsideration?
No. Exhaustion of WCAB reconsideration under Labor Code 5903 is a prerequisite to filing a Labor Code 5950 writ. Skipping reconsideration and going directly to the Court of Appeal bars the writ. The reconsideration petition must be filed within 25 days of the WCJ's decision, and the WCAB must rule on it, before the writ deadline can begin to run.
Who can file a Labor Code 5950 writ of review?
Any person affected by a WCAB order can file a Labor Code 5950 writ, including the injured worker, the employer, the insurer, or a lien claimant. The petitioner must have standing, meaning they must have been a party to the WCAB proceeding and adversely affected by the order. The petition is filed at the Court of Appeal for the appellate district where the petitioner resides.
Last reviewed by Eman Yazdchi, Esq., July 2026.
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