Workplace Accidents
Can You Sue a Third Party for a Work Injury in California?
Yes. In California, you usually cannot sue your own employer for a work injury because workers’ compensation is the exclusive remedy, but you can file a personal injury lawsuit against a third party whose negligence caused or contributed to the injury. Common third parties include a negligent driver who hit you while you were working, the manufacturer of defective equipment, a property owner, or a subcontractor on a shared job site. A third-party claim can recover damages workers’ compensation does not pay, including pain and suffering and the full amount of lost income.
Many injured workers never learn that a second claim exists, so it is worth asking early who else may have played a role in what happened.
Why Workers’ Compensation Is Not Always the Whole Story
Under California Labor Code Section 3600 and Section 3602, workers’ compensation generally replaces a lawsuit against your employer. In exchange, you receive benefits without proving fault. The trade-off is that benefits are limited. They cover medical care and a portion of lost wages, but they do not compensate you for pain, emotional distress, or loss of enjoyment of life.
Labor Code Section 3852 preserves your right to sue anyone other than your employer who is legally responsible for the injury. That is where a third-party claim fits.
| What It Covers | Workers’ Compensation | Third-Party Claim |
|---|---|---|
| Medical treatment | Yes | Yes |
| Lost wages | Partial, capped by statute | Full past and future loss |
| Pain and suffering | No | Yes |
| Proof of fault required | No | Yes |
| Who pays | Employer’s comp insurer | The negligent party or its insurer |
Who Can Be a Third Party in a Work Injury Case?
Negligent Drivers
If you were hurt in a crash while driving for work, making deliveries, or working in a roadside zone, the at-fault driver can be sued like in any other car accident claim.
Equipment and Product Manufacturers
A defective ladder, forklift, saw, or machine guard can support a product liability claim against the company that designed, made, or sold it, even if no one was careless in using it.
Property Owners and Managers
Workers who are injured on property their employer does not control, such as a client’s building, may have a premises liability claim if a dangerous condition caused the injury.
Other Contractors on the Site
On construction sites, another company’s employees often create the hazard. A subcontractor that left an unguarded opening or dropped materials may be responsible. Liability rules on multi-employer sites can be complex, so the facts of control and responsibility matter.
California law allows a direct claim against an employer only in narrow situations, such as a willful physical assault by the employer, fraudulent concealment of an injury that makes it worse, or the removal of a required power press guard. These exceptions are rare and fact specific.
Hurt on the job because of someone outside your company? A free case review can identify every party who may be responsible.
Get a Free Case ReviewSteps to Protect a Third-Party Claim
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Report the Injury to Your Employer
California generally requires notice to your employer within 30 days under Labor Code Section 5400. Late notice can complicate both claims.
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Identify Everyone Involved
Write down the names of other companies, drivers, equipment brands, and property owners connected to the incident.
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Preserve the Equipment and Scene
Ask that any machine, tool, or vehicle involved be kept as it is. Repairs or disposal can destroy key evidence of a defect.
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Get Medical Care and Keep Records
Follow your treatment plan and keep every record. The same records usually support both the comp claim and the injury claim.
What Happens to Your Workers’ Comp Benefits?
You can usually pursue both. However, your employer or its comp insurer typically has a right to be reimbursed from a third-party recovery for benefits already paid, and may receive a credit against future benefits. How that lien is calculated and negotiated can have a large effect on what you take home, which is why coordinating both claims matters. For a closer look at damages, see which damages you can claim after a serious injury.
Most third-party injury lawsuits in California must be filed within two years under Code of Civil Procedure Section 335.1, and shorter deadlines apply if a government entity is involved. A Walnut Creek workplace accident lawyer can review whether a third party shares responsibility.
Frequently Asked Questions
Can I sue my employer directly for a workplace injury in California?
Usually not. Workers’ compensation is the exclusive remedy against an employer, with only narrow statutory exceptions.
Can I collect workers’ comp and file a lawsuit at the same time?
Yes, against a third party. The comp insurer may seek reimbursement from the third-party recovery.
What if I was partly at fault for the accident?
California’s comparative fault rule reduces a third-party recovery by your share of fault but does not necessarily bar it.
Does a temp or staffing agency worker have third-party rights?
Possibly. Depending on who controlled the work, the host company or another contractor may be a potential defendant.
Injured at Work Because of Someone Else?
Every case at The Herman Firm gets direct attorney attention from the first call. Consultations are free, and you pay nothing unless we win.
Call 925-532-1977 Request a Free Case Review