John Roach, Esq. | September 7, 2026 | Attorney Tips \ California Law
Hurt on the Job This Labor Day? A San Francisco Lawyer Explains When Workers’ Comp Is Not Your Only Claim
Labor Day weekend is supposed to honor working people. The bitter irony I see in my office every September: it’s also when a lot of working people get hurt — on holiday-schedule shifts, short-staffed job sites, and rush deliveries. And almost every injured worker who calls me starts with the same sentence: “They told me all I can do is file workers’ comp.”
That sentence costs California workers real money, because it’s often wrong. Workers’ comp is usually the starting point — but it is not always the whole case. When someone other than your employer played a role in your injury, you may also have a third-party personal injury claim — a separate case, against a separate defendant, with a separate (and usually much larger) pool of compensation. I’ve handled injury cases in San Francisco since 2009, and finding the third-party claim hiding inside a “comp case” is one of the most valuable things a lawyer does. Here’s how it works.
Workers’ Comp vs. a Third-Party Claim: The Difference in One Table’s Worth of Words
Workers’ compensation is no-fault insurance through your employer. It pays regardless of who caused the accident — but it pays a limited menu: medical treatment, a percentage of lost wages, and disability benefits set by formula. What it never pays is compensation for your pain, your suffering, and the full human cost of the injury. In exchange for the no-fault system, the law generally bars you from suing your employer.
A third-party claim is a full personal injury case against someone who isn’t your employer and who negligently caused or contributed to your injury. It requires proving fault — and in exchange, it pays what comp never will: full lost earnings (past and future), pain and suffering, and the complete measure of your damages. The two claims run at the same time. Filing comp does not waive the third-party case, and pursuing the third-party case does not threaten your comp benefits — though the two systems reimburse each other in ways a lawyer needs to manage, which I cover below.
Where Third-Party Claims Hide: The Five Most Common Scenarios
- Driving for work. A delivery driver, home-care aide, or tradesperson rear-ended between job sites has a comp claim through the employer and a full injury claim against the at-fault driver. This is the most commonly missed third-party case in California.
- Multi-employer job sites. On construction sites, the negligent party is often a different subcontractor — the electrician’s scaffold, the framer’s dropped load, the GC’s site-safety failures. Your comp claim runs through your employer; your injury claim runs against the negligent contractor. This is exactly how serious cases on the sites I describe on my construction brain injury and construction wrongful death pages get built.
- Defective equipment. A ladder that buckles, a saw guard that fails, a lift that drops — the manufacturer or distributor of a defective product answers in a product liability claim, no matter whose name is on your paycheck.
- Dangerous property. Injured while working at a customer’s building, a landlord’s premises, or a store you were delivering to? The property owner’s duty to keep the premises safe runs to you as a lawful visitor doing your job.
- Injured by the public. Drivers who hit flaggers and roadside crews, dogs that bite delivery workers, negligent security. If a member of the public hurt you while you worked, their insurance is in play.
Notice the pattern: ask who, besides your employer, touched the chain of events. If the honest answer is “someone,” you may be leaving the larger half of your case on the table. I walked through the comp-only trap for East Bay workers in my guide to workplace injury rights for Oakland employees — this post is the third-party half of that conversation.
Why the Third-Party Case Is Usually the Bigger Case
Comp pays two-thirds of your average weekly wage, capped by statute, and nothing for pain and suffering. A third-party case values the injury the way the civil justice system does: every dollar of past and future medical care, every dollar of lost earning capacity, and the real toll on your body and your life. For a serious injury — a back that won’t take weight again, a hand that won’t grip a tool, a brain injury that ends a career — the difference isn’t a rounding error. It’s routinely the difference between a formula payout and a seven-figure recovery. My results include a $650,000 spinal injury recovery and, across my practice, more than $25 million recovered for Bay Area clients since 2009.
The Catch a Lawyer Manages: The Comp Lien
When your third-party case recovers money, the workers’ comp insurer generally has a lien — a right to be reimbursed for benefits it paid. Handled lazily, the lien can swallow a settlement. Handled well, it becomes a negotiation: California law lets the lien be reduced for the comp carrier’s share of fault, for attorney’s fees, and through negotiated compromises. Managing the interplay between the two cases — timing, credits, lien reductions — is where an experienced lawyer materially raises what actually reaches your pocket, the same way medical lien reduction does in an ordinary injury case.
What to Do After a Work Injury With a Possible Third-Party Claim
- Report the injury to your employer right away and get medical care the same day. Late reporting is the number-one way both claims get attacked.
- Write down who else was involved — the other driver, the subcontractor’s name on the truck, the equipment brand and model, the property owner. The third-party defendant is identified from details like these.
- Preserve the evidence. Photos of the scene and equipment; don’t let a defective tool get repaired or thrown away — it’s the case.
- File the comp claim — it starts your medical care and wage benefits while the bigger case is built.
- Talk to a personal injury lawyer, not just a comp attorney. Comp firms handle the comp claim; the third-party case is a different specialty. Two years is the general deadline for the injury claim — and only six months if a government entity is involved, as it often is on public roadway and public-works jobs.
The “Exclusive Remedy” Rule — and Its Real Exceptions
California law generally bars an injured worker from suing their own employer directly for a workplace injury — workers’ compensation is supposed to be the “exclusive remedy” against the employer in exchange for no-fault benefits that don’t require proving negligence. That rule is exactly why the third-party claim matters so much: it’s the legal path around a wall that otherwise blocks a full recovery.
But the exclusive remedy rule has real exceptions, and missing one of them is how injured workers leave money on the table. If your employer intentionally caused your injury, or knew with substantial certainty that an injury was going to occur and did nothing, the exclusivity bar can fall away entirely. If your employer illegally failed to carry workers’ compensation insurance, you can sue them directly in civil court — and California law allows for enhanced damages in that situation specifically because it punishes employers who skip legally required coverage. And if you were injured on a job site controlled by a general contractor who wasn’t your direct employer, that contractor’s own negligence in controlling site safety can sometimes support a separate claim, independent of who technically signed your paycheck. Sorting out which of these applies is exactly the kind of analysis that gets missed when a case is only run through the workers’ comp system.
Two Different Clocks: Deadlines for the Comp Claim and the Third-Party Claim
One of the most common — and costly — mistakes injured workers make is assuming one deadline governs the whole situation. It doesn’t. Your workers’ compensation claim generally must be reported to your employer within 30 days and a formal claim filed within one year of the injury. Your separate third-party civil claim against the driver, property owner, contractor, or equipment manufacturer runs on California’s general two-year personal injury statute of limitations, as I explain in my guide to California’s statute of limitations. Treating the comp claim as the whole case, and letting two years pass without evaluating the third-party angle, is one of the most common ways an injured worker permanently loses the larger half of their recovery.
Your Immigration Status Does Not Change Any of This
Every worker in California has these rights — workers’ comp and third-party claims alike — regardless of immigration status. California law prohibits using immigration status as evidence in personal injury cases, and filing a claim is not an immigration proceeding. I serve the Spanish-speaking community directly in Spanish, and I’ve written about injury claims for undocumented victims in California because fear of asking is the single biggest reason legitimate cases die quietly.
Frequently Asked Questions: Work Injuries and Third-Party Claims
Can I sue my employer for a work injury in California?
Generally no — workers’ comp is the exclusive remedy against your employer, with narrow exceptions. But that bar protects only your employer. Anyone else who negligently caused your injury can be held fully liable in a third-party claim.
What is a third-party work injury claim?
A full personal injury lawsuit against someone other than your employer — an at-fault driver, another subcontractor, an equipment manufacturer, or a property owner — whose negligence caused your on-the-job injury. It runs alongside your comp claim and pays damages comp never covers, including pain and suffering.
Will a third-party lawsuit hurt my workers’ comp benefits?
No. The claims are designed to coexist. The comp carrier does hold a reimbursement lien against your third-party recovery, but that lien is negotiable — and reducing it is part of your lawyer’s job.
I was driving for work when another driver hit me. Do I have two claims?
Very likely yes: a comp claim through your employer and a personal injury claim against the at-fault driver (plus UM/UIM coverage if that driver is uninsured or underinsured). This is the most commonly missed third-party case.
How long do I have to file?
The third-party injury claim generally must be filed within two years — but if a public entity is involved (a city vehicle, a Caltrans roadway, a public-works site), a government claim is typically due within six months. The comp claim has its own, shorter reporting deadlines. Report now, sort the rest with counsel.
Does my immigration status affect my work injury claims?
No. Workers’ comp and third-party injury claims are available to every California worker regardless of status, and status is not admissible as evidence in a personal injury case.
What does it cost to find out if I have a third-party case?
Nothing. I review work injury cases in a free consultation, and I only get paid if I recover for you. If your case is comp-only, I’ll tell you that too.
Can my employer fire me for filing a workers’ comp claim?
No. California Labor Code section 132a makes it illegal for an employer to fire, discipline, or discriminate against you for filing a workers’ compensation claim, and violating it can expose the employer to additional penalties. Fear of retaliation stops a lot of injured workers from reporting an injury at all — it shouldn’t.
What if my employer didn’t have workers’ comp insurance?
If your employer was illegally uninsured, you’re generally not limited to the workers’ comp system at all — you can sue your employer directly in civil court, and California law allows for enhanced damages specifically because the employer skipped legally required coverage.
Injured on the Job? Get the Whole Case Valued — Free
If you or a family member was hurt at work anywhere in the Bay Area — on a job site, behind the wheel, on someone else’s property — call me at (415) 851-4557 for a free consultation before you assume comp is all there is. I’ve handled injury cases since 2009, recovered more than $25 million for my clients, and there’s no fee unless I win.
¿Se lesionó en el trabajo? La compensación laboral casi nunca es todo su caso. Atiendo a los trabajadores hispanos directamente en español — vea mi guía para el trabajador de construcción hispano lesionado, mi página de accidentes de construcción, o mi guía de lesiones personales en San Francisco — o llame al (415) 851-4557 para una consulta gratuita en español.