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Construction & Workplace Injuries

Third-Party Liability in Construction Accidents Explained

Key Takeaways

  • Workers’ compensation does not cover all losses; third-party claims can recover pain, suffering, and full damages.
  • Subcontractors, property owners, and equipment manufacturers may all carry third-party liability on a job site.
  • Defective machinery or tools can support a product liability claim against the manufacturer, not your employer.
  • Falls, struck-by incidents, and electrocution are among the most common accidents tied to third-party claims.
  • Oregon law allows injured workers to pursue both workers’ compensation and a separate third-party personal injury lawsuit.
In this article
  1. What Is Third-Party Liability in a Construction Accident Case?
  2. Who Can Be Held Liable Besides Your Employer?
  3. Defective Equipment and Unsafe Machinery Often Lead to Third-Party Claims
  4. Common Construction Accidents That Involve Third-Party Liability
  5. What Compensation May Be Available in a Third-Party Construction Claim
  6. What Evidence Helps Prove Third-Party Negligence
  7. How Oregon Law Can Affect Construction Accident Claims
  8. Speak With a Portland Construction Accident Lawyer About Third-Party Claims

Construction sites in Portland carry real dangers, and injured workers often assume their only path forward is workers’ compensation. Third-party liability in construction accidents refers to claims brought against parties other than your direct employer. While workers’ comp covers medical expenses and partial wages, a personal injury lawsuit opens the door to damages workers’ comp cannot provide.

Consulting a Portland Construction Accident Lawyer at Paulson Coletti Trial Attorneys is the right first step.

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What Is Third-Party Liability in a Construction Accident Case?

Workers’ compensation is the first remedy after a job site injury, but not the only one. Third-party liability in construction accidents arises when someone other than your employer contributed to the injury. These claims operate outside the workers’ comp system and allow recovery of damages that it does not provide, including pain and suffering.

Who Can Be Held Liable Besides Your Employer?

Construction sites involve multiple contractors, vendors, and stakeholders. When anyone acts negligently, they may face legal consequences.

  • General Contractors: A general contractor who neglects safety protocols may be liable for injuries to subcontractor employees.
  • Subcontractors: When one subcontractor’s crew creates a hazardous condition that injures workers from another trade, that subcontractor can face third-party liability.
  • Property Owners: Developers and landowners who retain control over a work site owe a duty to maintain reasonably safe conditions.
  • Equipment Manufacturers: A manufacturer whose defective tool or machine causes injury may be held responsible regardless of how it was used.
  • Engineers and Architects: When a design professional’s plans introduce unsafe conditions, liability can follow if workers are injured.

Defective Equipment and Unsafe Machinery Often Lead to Third-Party Claims

Machinery failures are a frequent source of third-party claims. A collapsing crane, a buckled scaffold, or a power tool that fails due to a flaw can give rise to a product liability claim. The worker must show the product was defective and that the defect caused the harm. According to the Bureau of Labor Statistics Census of Fatal Occupational Injuries, contact with objects and equipment accounts for a significant share of construction fatalities each year.

Common Construction Accidents That Involve Third-Party Liability

Several types of injuries frequently give rise to third-party claims on Portland construction sites.

  • Falls from Height: Defective scaffolding or an unsecured platform can support a third-party claim against the responsible contractor or owner.
  • Struck-by Incidents: Workers hit by falling materials or equipment operated by another contractor’s crew may have claims beyond workers’ compensation.
  • Electrocution: Improper wiring or equipment with manufacturing defects can implicate parties outside the direct employer.
  • Trench Collapses: A general contractor’s failure to shore an excavation properly can extend liability beyond the direct employer.

What Compensation May Be Available in a Third-Party Construction Claim

A third-party claim can recover damages that workers’ compensation does not address, including lost wages, pain and suffering, and future medical costs. When an injury results in permanent disability, the gap between workers’ comp and a third-party recovery can be considerable.

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What Evidence Helps Prove Third-Party Negligence

Establishing third-party liability requires a clear connection between the responsible party’s conduct and the worker’s injury. Photographs, equipment records, and witness statements form the foundation. Safety engineer testimony often demonstrates that a contractor or manufacturer failed to meet the applicable standard.

How Oregon Law Can Affect Construction Accident Claims

Oregon’s workers’ compensation system, governed by Oregon Revised Statutes Chapter 656, shields employers from direct civil suits. That protection does not extend to third parties. ORS 656 preserves a worker’s right to bring a separate personal injury claim against any negligent party outside the employment relationship. Oregon follows a modified comparative fault standard, reducing recovery by the worker’s share of fault but keeping it available provided that share does not exceed 50 percent.

Speak With a Portland Construction Accident Lawyer About Third-Party Claims

These cases require a thorough investigation of every party connected to the site. At Paulson Coletti Trial Attorneys, our team examines every angle, not just your employer’s role, to build the strongest possible case.

Call (503) 226-6361 today to speak with a Portland Construction Accident Lawyer about your options.

Paulson Coletti

Trial Attorneys PC

Jane Paulson and John Coletti

At Paulson Coletti, a local firm based in Oregon, justice is our mission. As experienced trial attorneys, we fight for injury victims across Oregon and Washington, holding negligent parties accountable. With a proven track record in and out of the courtroom, we are dedicated to securing fair compensation for our clients. We take a client-centered approach, focusing on cases we believe in and delivering results that matter. No fees unless we win—because justice should never come with financial risk.

This page has been written, edited, and fact-checked by our team of legal writers in accordance with our editorial guidelines. It has been approved by partners Jane Paulson and John Coletti — respected trial attorneys with decades of experience representing personal injury victims.