WORKPLACE INJURIES | 2026-09-29
Beyond Workers’ Comp: The Third-Party Claim for a California Workplace Injury (Labor Code § 3852)
Workers’ compensation is usually the exclusive remedy against your employer — but when someone else caused your on-the-job injury, California lets you bring a separate lawsuit for full damages.
For most on-the-job injuries, workers’ compensation is the injured worker’s exclusive remedy against the employer — a no-fault system that pays defined benefits but not full tort damages. What many injured workers do not realize is that when a <strong>third party</strong> — someone other than the em
Workers’ compensation is a trade-off: guaranteed but limited benefits, in exchange for giving up the right to sue the employer. But it does not bar claims against everyone. When a third party caused a workplace injury, a full-damages lawsuit is available.
The Comp Exclusivity Rule — and Its Boundary
California’s workers’ compensation system is generally the exclusive remedy for a work injury against the employer. The worker receives medical care and defined benefits without proving fault, but generally cannot sue the employer for pain and suffering or full damages. That exclusivity, however, protects the employer — not third parties who are not the employer.
The Third-Party Claim — Labor Code § 3852
Labor Code § 3852 provides that the injured worker’s claim for compensation does not affect their right to bring an action for damages against any person other than the employer who is responsible for the injury. In other words, receiving workers’ comp does not bar — and is in addition to — a civil lawsuit against a liable third party. In that lawsuit, the worker can recover the full range of tort damages, including pain and suffering, that comp does not provide.
Who the Third Party Might Be
- The manufacturer of a defective machine or tool that caused the injury (a products liability claim).
- A negligent driver who hit the worker while they were driving for work.
- A property owner or general contractor (other than the employer) whose unsafe premises caused the injury.
- A subcontractor or other on-site company whose negligence contributed.
Identifying every non-employer whose fault contributed is central, because that is where full recovery lies.
The Employer’s Lien and Subrogation
Because the employer (or its comp insurer) paid benefits, California law gives it a right to be reimbursed out of the worker’s third-party recovery — through a lien, a direct action, or by joining the case (Labor Code §§ 3852–3864). The employer’s lien is generally reduced to account for its share of any fault and for a fair portion of the attorney’s fees and costs the worker incurred to create the recovery (under principles such as the Witt v. Jackson reduction and common-fund allocation). Coordinating the comp lien with the third-party recovery is an important part of maximizing the worker’s net result.
Why It Matters
A third-party recovery can be many times the value of comp benefits, because it includes damages comp does not — full future medical care, lost earning capacity, and pain and suffering. Injured workers who assume comp is their only option leave that recovery on the table. Every serious workplace injury should be evaluated for a third-party claim.
Frequently Asked Questions
Can I sue if I was hurt at work?
Generally not your employer (comp is the exclusive remedy), but you can sue a responsible third party — someone other than the employer — for full damages under Labor Code § 3852, in addition to your comp claim.
Who can be a third-party defendant?
Equipment manufacturers, negligent drivers, non-employer property owners or contractors, and other companies whose fault contributed.
Does my employer get some of the recovery?
Yes — the employer/insurer has a subrogation lien for the benefits it paid, reduced for its share of fault and a fair portion of your attorney’s fees and costs.
Why pursue a third-party claim?
Because it provides full tort damages — including pain and suffering and full future losses — that workers’ compensation does not.
Related Personal Injury Guides
Talk to a California Workplace-Injury Attorney
If someone other than your employer caused your on-the-job injury, a third-party claim can provide full damages. Trembach Law Firm evaluates California workplace third-party claims. Call (818) 514-7680.
Contact Trembach Law Firm at (818) 514-7680 for a confidential consultation.
Trembach Law Firm | 27001 Agoura Road, Suite 350, Calabasas, CA 91301