“A fighting force both consistent and compassionate on a scale’s a 5 all around.”
Rachael Hall
✦ Certified Specialist in Workers’ Compensation Law, certified by the State Bar of California, Board of Legal Specialization ✦
By Eman Yazdchi, Esq. · Certified Specialist in Workers' Compensation Law, State Bar of California Board of Legal Specialization · Cal Bar #285231
Three clocks start when the order arrives: twenty days to file the Petition for Reconsideration, twenty-five if served by mail, then forty-five days for the Writ of Review.
A Wilmington worker has 20 days to file a Petition for Reconsideration and 25 more days to take a Writ of Review. Port of Los Angeles longshore, Tesoro refinery, and Harbor-adjacent logistics-corridor files are heard at the Los Angeles district WCAB. Certified Specialist Eman Yazdchi (California Board of Legal Specialization, State Bar of California) prepares the Petition and the writ.
Wilmington's Harbor-district workforce, refinery operators at Tesoro, Valero, and Phillips 66; port drayage truckers; tank-farm maintenance crews, produces specific injury patterns that create appellable orders: California Labor Code §4663, California's apportionment rule, apportionment awards against years of petrochemical cumulative exposure; California Labor Code §4553, the 50% serious-and-willful penalty when an employer knowingly failed to remedy a dangerous condition, serious-and-willful petitions on OSHA-documented violations; California Labor Code §4660, the permanent disability rating schedule, rating errors on the spine and pulmonary occupational tables; and treatment denials on respiratory-illness protocols under California Labor Code §4600, the employer's duty to provide all medically required treatment. The §5903, the six specific grounds on which a petition for reconsideration can succeed, Petition bundles every ground into one written filing. Call (661) 273-1780.
The Petition is filed at the Los Angeles district WCAB through EAMS, then transmitted to the seven-member Appeals Board in San Francisco for review within sixty days.
A Wilmington workers' compensation appeal is not a do-over. It is a verified, statute-driven proceeding governed by three Labor Code sections, and a Certified Specialist in Workers' Compensation Law (California Board of Legal Specialization, State Bar of California) calendars every one of them on day one. **Reconsideration under Labor Code §5900.** A §5900 petition for reconsideration is the first step. It is filed at the WCAB Los Angeles office (or the appeals board directly) within 20 days of service of the Findings & Award, Findings & Order, or other final order, plus five days for mail service under California Code of Civil Procedure §1013. The petition has to be verified by the petitioner and has to state the specific grounds in §5903. **Grounds under Labor Code §5903.** Section 5903 enumerates the six exclusive grounds: (a) the appeals board acted without or in excess of its powers; (b) the order was procured by fraud; (c) the evidence does not justify the findings of fact; (d) the petitioner discovered new evidence material to the case which could not reasonably have been discovered and produced; (e) the findings of fact do not support the order; and (f) the order is unreasonable. A petition that does not specifically state one of the §5903 grounds is denied as defective. **Writ of review under Labor Code §5950.** If the appeals board denies reconsideration, the only remaining remedy is a §5950 writ of review filed in the California Court of Appeal within 25 days of the date the appeals board's denial is filed. The writ is discretionary, the Court of Appeal grants review on a small fraction of petitions, and the standard of review is whether the appeals board acted without or in excess of its powers, the order was procured by fraud, or the findings of fact are unsupported by substantial evidence. **Why the deadlines matter in Wilmington.** The 20-day reconsideration window and the 25-day writ window are jurisdictional, they cannot be extended, equitably tolled, or saved by a stipulation. A Wilmington client who walks in on day 21 after the WCAB Los Angeles decision has often already lost the appeal. We do not let that happen. **Local context.** The California Division of Workers' Compensation 2024 reconsideration statistics show petition volume up year-over-year, and the WCIRB California 2024 State of the System Report documents continued growth in litigated-claim frequency, both of which mean appellate calendaring discipline matters more, not less, for Wilmington claims venued at WCAB Los Angeles.Related on yazdchilaw.com: California workers' comp appeal pillar guide · Bloomington workers' comp appeal · Chinatown workers' comp appeal · Wilmington denied workers' comp claim · California Labor Code §5903 (Petition for Reconsideration deadline).
Three deadlines drive every California workers' comp appeal: 20 days (electronic) or 25 days (mail service) for a §5900 Petition for Reconsideration; 30 days for a §4610.5 IMR appeal of a Utilization Review treatment denial; 25 days from the reconsideration denial for a §5950 Writ of Review to the California Court of Appeal.
Under California Labor Code §5903 a Petition for Reconsideration must rest on one of six specific grounds, (a) the appeals board acted without or in excess of its powers; (b) the order, decision, or award was procured by fraud; (c) the evidence does not justify the findings of fact; (d) the petitioner discovered new evidence that could not, with reasonable diligence, have been produced at hearing; (e) the findings of fact do not support the order, decision, or award; (f) any other matter required by law. A verified Petition for Reconsideration must be signed under penalty of perjury and served on every party and lien claimant on the same day it is filed with the appeals board.
The Petition is filed at the Long Beach WCAB district where the underlying Workers' Compensation Judge (WCJ) ruling was issued, then transmitted to the seven-member Workers' Compensation Appeals Board in San Francisco for review. After filing, the assigned trial-WCJ prepares a Report and Recommendation on Reconsideration; the appeals board then issues a written decision either granting the petition (which usually orders a rehearing on a defined issue, sometimes en banc) or denying it. If the petition is denied, the only remaining remedy is a §5950 Writ of Review to the California Court of Appeal, a discretionary writ the court may grant or summarily deny within 60 days.
Injured at work? Call (661) 273-1780
Tap to call →Wilmington appeals are e-filed through EAMS to the Los Angeles district WCAB; writ review is handled by the California Court of Appeal for the relevant appellate district.
Most Wilmington workers' compensation matters are venued at the WCAB Los Angeles district office, and our case calendar reflects that. Wilmington is Port of LA trucker and refinery workforce, inside Harbor, and the local workforce mix shapes what kinds of appeals we actually see. Wilmington is Port-of-Los-Angeles-adjacent and dominated by drayage trucking, container-yard, longshore-support, and refinery employers. Wilmington workers' compensation claims are heavy industrial, back and shoulder cumulative-trauma in drayage drivers, chemical exposure in refinery workers, and Jones-Act / Longshore overlap that requires careful jurisdictional analysis. When we take a Wilmington workers' comp case, we open the file at WCAB Los Angeles, calendar the relevant statutes, run the §4663 apportionment analysis early, and tell the client, in plain English, what the realistic outcome looks like. Call (661) 273-1780.Last reviewed by Eman Yazdchi, Esq., June 2026.
Get your case evaluated in 60 seconds.
Get Your Free Case EvaluationThree fields. No obligation.
Read more testimonials →“A fighting force both consistent and compassionate on a scale’s a 5 all around.”