“Eman at Yazdchi Law was extremely professional, responsive, and supportive at all times. He and his staff exceeded all of my expectations.”
Andrea Dalessandro
Labor Code 5900: WCAB Review After a Final Decision
Certified Specialist (CA Bar)No Fee Unless We Win (Costs May Apply)Millions RecoveredSe Habla Español
- Years of Practice
- 14+
- Cases Handled
- 500+ over 14+ years of practice
- Recovered
- $7M+ over 14+ years of practice
- Bilingual + Farsi
- English + Español + Farsi
By Eman Yazdchi, Esq. · Certified Specialist in Workers' Compensation Law, State Bar of California Board of Legal Specialization · Cal Bar #285231
Any person aggrieved directly or indirectly... may petition the appeals board for reconsideration.
What does Labor Code 5900 establish?
Labor Code 5900 is the doorway statute for WCAB reconsideration after a final order, decision, or award.
When a workers' compensation judge issues a final decision, the losing side does not automatically get a new trial. Labor Code 5900 gives an aggrieved person the right to ask the Workers' Compensation Appeals Board to reconsider matters decided by that final order, decision, or award.
The statute is about access to review. It does not list every ground or give unlimited time. The petition must comply with the procedure in the same chapter, especially Labor Code 5903.
The first question is whether the decision is final enough to affect a substantial right. A simple setting order may not qualify. If the order only sets a date, it may not be final. If it decides injury, money, credit, or a lien, it may be final enough for review. Eman Yazdchi is a Certified Specialist in workers' compensation law, certified by the California Board of Legal Specialization, State Bar of California.
Who is an aggrieved person?
An aggrieved person is someone directly or indirectly affected by the final WCAB decision.
The injured worker is the most obvious example. An employer, insurer, lien claimant, or other party can also be aggrieved if the final decision affects that party's rights or duties. The petition should explain how the decision harms the petitioner.
Being annoyed with the reasoning is not enough. The order must determine or cover something that matters in the case, such as injury, benefits, credit, penalties, liens, or disability.
Start with harm. What did the order do to the worker's check, care, rating, lien, or right to prove the claim? That answer shapes the petition.
How does Labor Code 5900 connect to Labor Code 5903?
Labor Code 5900 authorizes reconsideration, while Labor Code 5903 supplies the timing and listed grounds.
Read the two statutes together. Labor Code 5900 opens the door. Labor Code 5903 tells the party when and on what grounds to walk through it. A petition that cites Labor Code 5900 but ignores Labor Code 5903 is incomplete.
Current Labor Code 5903 grounds include excess powers, fraud, unsupported evidence, new material evidence that could not reasonably have been produced earlier, and findings that do not support the order.
What does the petition need to do?
The petition should identify the final decision, the challenged findings, the statutory ground, and the record support.
The Appeals Board is reviewing a record, not starting over from scratch. A useful petition names the decision, states why the petitioner is aggrieved, identifies the ground for reconsideration, and cites the trial evidence or legal error.
For new evidence, the petition needs more than a late medical report. It must explain why the evidence is material and why reasonable diligence could not have produced it before.
What can the Appeals Board do?
The Appeals Board can deny reconsideration, grant it, amend the decision, rescind it, or return the case for more proceedings.
After the petition is filed, the workers' compensation judge may prepare a report. The board reviews the petition, any answer, the record, and the report. If the petition is granted, the final outcome may change or the case may be sent back for more evidence or findings.
Labor Code 5900 also gives the board an own-motion power within a limited period after a judge's order, decision, or award and report. That power is separate from a party's petition.
Injured at work? Call (661) 273-1780
Tap to call →Frequently Asked Questions
Is Labor Code 5900 the deadline statute?
Not by itself. Labor Code 5900 authorizes reconsideration. The deadline and grounds are mainly handled through Labor Code 5903 and related WCAB procedure rules.
Can any party file a petition for reconsideration?
A party may file if the final decision makes that party aggrieved. The petition should explain how the order affects the party's rights, benefits, duties, lien, or defense.
Is reconsideration a second trial?
No. Reconsideration is review of a final WCAB decision based on statutory grounds and the record. New evidence is limited and must meet a specific standard.
What decisions can be challenged?
The decision usually must be final, meaning it determines a substantial right or liability issue. Routine scheduling orders often do not qualify.
What should I bring to a reconsideration consult?
Bring the final decision, proof of service, trial minutes, exhibits, medical reports, rating papers, prior orders, and any documents tied to the finding you want reviewed.
Last reviewed by Eman Yazdchi, Esq., July 2026.
Get your case evaluated in 60 seconds.
Get Your Free Case EvaluationTalk to a Certified Specialist
Three fields. No obligation.
What Our Clients Say
Read more testimonials →“Eman at Yazdchi Law was extremely professional, responsive, and supportive at all times. He and his staff exceeded all of my expectations.”