What is a third-party claim?
A third-party claim is a personal injury claim against someone other than the direct employer. The injured worker still receives workers comp benefits (if applicable) from the employer's comp carrier — but adds a separate tort claim against the third party.
Third-party claims are not subject to workers comp limitations:
- No caps on pain and suffering, mental anguish, or punitive damages
- Full lost wages and lost earning capacity (not just the workers comp percentage)
- Loss of consortium for a spouse
- No exclusive remedy doctrine bar
The case proceeds in court as an ordinary negligence claim. The worker is the plaintiff. The third-party defendant is everyone except the direct employer.
Common third-party defendants by industry.
Oilfield workers
- The well operator (oil company on the lease)
- Other contractors on the wellsite (workover, wireline, casing, frac, etc.)
- Equipment manufacturers (rotating equipment, BOPs, mud pumps, etc.)
- Trucking companies that delivered to or from the wellsite
- Maintenance contractors
Construction workers
- The general contractor (when the injured worker is a subcontractor employee)
- The property owner (when the property owner retained safety control)
- Other subcontractors on the jobsite
- Equipment manufacturers (scaffolding, lifts, power tools, vehicles)
- Architects and engineers (for design defects)
Trucking workers
- Other drivers in multi-vehicle crashes
- The trucking company that hired the driver (vicarious liability)
- Shippers and brokers (where they directed unsafe conduct)
- Equipment manufacturers (tire blowouts, brake failures, steering defects)
- Maintenance contractors for the truck
Manufacturing and warehouse workers
- Manufacturers of defective equipment that caused the injury
- Outside contractors performing services on the premises
- Delivery drivers who caused injuries
- Property owners (if different from the employer)
Operator and general contractor liability.
For oilfield and construction workers, the most significant third-party defendant is typically the operator or general contractor — the entity that controlled the worksite even though it wasn't the direct employer.
The liability of an operator/GC for injuries to contractor employees turns on the degree of control retained. The Texas Supreme Court framework, articulated in cases like Coastal Marine Service v. Lawrence and refined over decades, asks:
- Did the operator/GC retain control over the means and methods of the work? (vs. just specifying the end result)
- Did the operator/GC have actual knowledge of the danger?
- Did the operator/GC have a contractual right to direct safety practices?
- Did the operator/GC actually exercise that right?
When the operator/GC retained meaningful control — through master service agreements, on-site company representatives, safety standards, or operational direction — they generally have liability for injuries arising from that control. Modern oilfield and large-construction operations almost always involve enough operator/GC control to support third-party claims.
Equipment defect claims — product liability.
When the injury was caused or worsened by defective equipment, the equipment manufacturer is a potential third-party defendant. Texas product liability law covers three theories:
Design defect
The product was designed in an unreasonably dangerous way. A safer alternative design existed. The risk of the design outweighed its utility.
Manufacturing defect
The specific unit that injured the worker was manufactured differently from the design — a flaw introduced during manufacturing.
Marketing defect (failure to warn)
The product lacked adequate warnings about a non-obvious danger. The user could not reasonably be expected to know about the risk without warning.
Product liability cases require specialized experts (mechanical engineers, design engineers, biomechanical experts) and often substantial discovery. But for serious injuries where defective equipment played a role, these claims can be enormous — manufacturer policies frequently run $25-100 million.
The workers comp subrogation question.
When a worker receives workers compensation benefits AND recovers from a third-party defendant, the workers comp carrier has a subrogation interest in the third-party recovery. This means the carrier gets reimbursed for the comp benefits paid, out of the third-party settlement.
Texas Lab. Code § 417.001 et seq. governs this. The basic rules:
- The comp carrier has the right of subrogation against any third-party recovery
- The subrogation amount is reduced by the worker's attorney fees and case expenses
- The carrier and the worker can negotiate the subrogation amount in many circumstances
- Special rules apply when the third-party recovery is less than the total comp benefits
The subrogation issue can be significant. For a worker who has received $300,000 in workers comp benefits and recovers $1,000,000 from a third-party, roughly $300,000 (minus fee/expense reduction) goes back to the comp carrier. The net to the worker is in the $700,000 range — still many multiples of what workers comp alone would have provided, but the subrogation matters and needs to be planned for.
Why early third-party investigation is critical.
Identifying every potential third-party defendant in the first 30 days of a workplace injury case is one of the highest-value early-stage actions. Why early matters:
- Statutes of limitations — 2 years in Texas, generally counted from the injury date. Late identification of a defendant means racing the clock.
- Evidence preservation — defective equipment can be repaired, modified, or destroyed. Wellsite documents can be lost or destroyed. Vehicle data can be overwritten. Once you know who the defendants are, you can demand preservation.
- Insurance limits — each defendant brings their own insurance policy. The more defendants identified, the more potential coverage available to compensate the injury.
- Strategic positioning — early identification allows the case to be filed and discovery to begin while evidence is still fresh and witnesses are still locatable.
This is part of what we do in the first 30 days of every workplace injury case — pull every contract, master service agreement, certificate of insurance, delivery record, OSHA report, and incident report we can find. Each one frequently reveals another defendant.