“I am glad and so very pleased...he made happen what no other attorney could do. So far he has proven his weight in gold.”
Jamal Sharples
Antelope Valley
What Is California Labor Code §5410 (Five-Year Window to Reopen a Claim)?
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
Nothing in this chapter shall bar the right of any injured worker to institute proceedings for the collection of compensation within five years after the date of the injury upon the ground that the original injury has caused new and further disability.
What does California Labor Code §5410 actually allow?
Section 5410 lets an injured California worker reopen a closed comp claim within five years of injury if disability worsens or new treatment is needed.
Section 5410 is the five-year safety-valve, it lets a California injured worker reopen a closed comp case within five years of the injury date if disability worsens, new symptoms emerge, or new treatment is needed. It applies even after a Stipulated Award. Certified Specialist Eman Yazdchi (California Board of Legal Specialization, State Bar of California) files section 5410 petitions to reopen when a prior settlement no longer covers the worker's medical needs.
California Labor Code §5410 allows a California injured worker to petition the WCAB to reopen a workers' compensation claim within five years of the date of injury for new and further disability. The §5410 California rule is the safety valve when a closed claim worsens, additional medical treatment becomes necessary, permanent disability has increased beyond the original rating, or new symptoms manifest that were not contemplated at the time of the original settlement under California Labor Code §5001, the WCAB-approval requirement for a Compromise & Release, or California Labor Code §5003, the Stipulations with Request for Award format.
What is the §5410 California "new and further disability" standard?
New and further disability means any significant worsening of the industrial condition, additional surgery, new body part involvement, or measurably increased impairment.
Under California Labor Code §5410, "new and further disability" in California means a worsening of the original industrial injury not contemplated at the original settlement. The §5410 standard requires a measurable change, a previously settled back injury that now requires surgery, an industrial shoulder condition that has progressed to chronic pain syndrome, or a previously asymptomatic body part now symptomatic. Routine ongoing treatment is not §5410 California new and further disability.
How does §5410 California timing actually work?
The five-year clock runs from the date of injury, not the date of settlement, a worker injured in 2022 has until 2027 to file a section 5410 petition.
Under California Labor Code §5410, the California reopening petition must be filed within five years from the original date of injury, not five years from when the worsening was discovered, not five years from the settlement date. The §5410 five-year clock runs from the original California Labor Code §5412 date of injury (for CT cases) or the date of the specific traumatic event. A California worker who waits past the §5410 window loses the right to reopen entirely.
What can be recovered when a California §5410 reopening is granted?
A successful section 5410 reopening can recover additional medical treatment, increased permanent disability, and any temporary disability that accrues during the worsening period.
When a California §5410 petition is granted, the worker can recover additional benefits: further medical treatment under California Labor Code §4600, additional temporary disability under California Labor Code §4653 for new periods off work, increased permanent disability under California Labor Code §4660 reflecting the worsened condition, and the California Labor Code §4658.7 SJDB voucher when applicable. The §5410 California reopening can substantially increase total comp recovery when the worsening is severe.
How does §5410 interact with a §5001/§5003 Compromise & Release?
Section 5410 interacts with a section 5001 Compromise and Release: a C&R closes future medical care and bars reopening unless the parties expressly carved it out.
Under California Labor Code §5001 and California Labor Code §5003, a Compromise & Release closes out future benefits including the §5410 reopening right, the worker takes a lump sum and gives up the right to reopen. A Stipulations with Request for Award preserves the §5410 right but settles only the immediately known benefits. The C&R-vs-Stipulations choice in California is one of the most consequential decisions in a comp settlement because of the §5410 implication.
According to the WCIRB's 2024 California Workers' Compensation Losses & Expenses report, average indemnity per permanent-partial claim was $54,200 in policy year 2023, up from $49,600 in 2020, the dollar trend that drives both the §4658.7 voucher and the §4659 life-pension calculations.
Related reading: California pillar guide · §5412 explainer.
Related on yazdchilaw.com: California workers' compensation lawyer pillar · California Labor Code §5400.30 explained · California Labor Code §3700.6 explained · what to do if you can't go back to work after a workers' comp injury.
Injured at work? Call (661) 273-1780
Tap to call →Frequently Asked Questions
What does California Labor Code §5410 actually allow an injured worker to do?
California Labor Code §5410 allows a California injured worker to petition the WCAB to reopen a workers' compensation claim within five years of the date of injury for new and further disability. The §5410 California rule is the safety valve when a closed claim worsens, additional medical treatment becomes necessary, permanent disability has increased beyond the original rating, or new symptoms manifest that were not contemplated at the time of the original settlement under California Labor Code §5001 or California Labor Code §5003 Stipulations with Request for Award.
What is the California §5410 "new and further disability" standard?
Under California Labor Code §5410, "new and further disability" in California means a worsening of the original industrial injury that was not contemplated at the original settlement or award. The §5410 California standard requires the worker to show a measurable change, a previously settled back injury that now requires surgery, an industrial shoulder condition that has progressed to chronic pain syndrome, or a previously asymptomatic body part affected by the original injury that has now become symptomatic. Routine ongoing treatment is not §5410 California new and further disability.
How does the California §5410 timing actually work?
Under California Labor Code §5410, the California reopening petition must be filed within five years from the original date of injury, not five years from the date the worsening was discovered, and not five years from the settlement date. The §5410 California five-year clock runs from the original California Labor Code §5412 date of injury (for cumulative-trauma cases) or the date of the specific traumatic event. A California worker who waits past the §5410 five-year window loses the right to reopen the claim entirely, regardless of how much the condition has worsened.
What can a California worker actually recover when a §5410 reopening is granted?
When a California §5410 petition is granted, the worker can recover the additional benefits that have become necessary: further medical treatment under California Labor Code §4600, additional temporary disability under California Labor Code §4653 for new periods off work, increased permanent disability under California Labor Code §4660 reflecting the worsened condition, and the California Labor Code §4658.7 SJDB voucher when applicable. The §5410 California reopening can substantially increase the total comp recovery when the worsening is severe, particularly for back surgeries that follow conservatively settled California disc cases.
How does California §5410 interact with a §5001/§5003 Compromise & Release?
Under California Labor Code §5001 and California Labor Code §5003, a Compromise & Release closes out future benefits including the California Labor Code §5410 reopening right, the California worker takes a lump sum and gives up the right to reopen. A Stipulations with Request for Award preserves the §5410 reopening right but settles only the immediately known benefits. The C&R-vs-Stipulations choice in California is one of the most consequential decisions in a comp settlement because of the §5410 reopening implication.
Last reviewed by Eman Yazdchi, Esq., June 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 →“I am glad and so very pleased...he made happen what no other attorney could do. So far he has proven his weight in gold.”