Third-Party Liability in California Construction Accidents

Legal Options Beyond Workers’ Comp

A construction accident can change your life in an instant. Beyond the physical pain, victims often face steep medical bills, time away from work, and the emotional burden of an uncertain future. Workers’ compensation provides some support, but in severe cases, it’s rarely enough.

That’s why third-party liability matters. When someone other than your employer contributed to the accident—like a subcontractor, equipment manufacturer, or property owner—you may have the right to pursue a separate personal injury claim. At Hulburt Law Firm, our San Diego construction accident attorneys specialize in uncovering every possible avenue for compensation.

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What Is Third-Party Liability in a Construction Accident?

Third-party liability refers to the legal responsibility of someone outside your employer who contributed to your injury. Unlike workers’ comp, which doesn’t require proving fault, a third-party claim is a personal injury lawsuit that requires you show negligence caused your harm.

This route can provide fuller compensation, including:

• Pain and suffering
• Emotional distress
• Full wage loss
• Future medical costs
• Wrongful death damages (for surviving family members)

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Who Can Be Held Liable in a Third-Party Construction Claim?

Construction sites often involve multiple parties sharing responsibilities. When safety protocols are ignored or hazards are overlooked, more than one entity may be legally accountable.

Here are common third parties who may be liable:

1. Subcontractors

Construction sites are often busy with multiple subcontractors hired to complete specialized tasks, such as concrete, carpentry, electrical, plumbing, or roofing. A subcontractor’s failure to follow safety protocols, negligence, or errors can lead to accidents that harm workers from other companies.

Examples:

• An excavator fails to properly shore or brace adjacent structures. 
• An electrician fails to properly secure live wires, resulting in electrocution.
• A roofer drops tools or materials that injure workers below.

2. Property Owners

Property owners have a legal obligation to ensure their premises are safe for construction work. If unsafe conditions on the property contribute to an accident, the owner may be held liable.

Examples:

• Failing to address known hazards, such as unstable structures or hazardous materials.
• Neglecting to warn construction workers of dangerous conditions, like hidden electrical wiring or toxic substances.

3. General Contractors

General contractors can be liable if they fail to maintain a safe work environment for all workers on-site.

Examples:

• Failure to enforce safety standards across the worksite.
• Failure to inspect work progress or properly sequence the subcontractors. 
• Overseeing defective or hazardous equipment without addressing known risks.

4. Equipment Manufacturers and Suppliers

Defective machinery, tools, or equipment can cause construction accidents. When an injury results from a product defect, workers may pursue a product liability claim against the manufacturer or distributor.

Examples:

• A malfunctioning crane causes a load to fall.
• Defective safety harnesses or scaffolding leads to falls.
• Power tools with design flaws cause injuries.

5. Delivery Drivers and Vendors

Vehicles frequently enter construction sites to deliver materials or supplies. If a delivery driver or vendor behaves negligently and causes an accident, they may be held liable.

Examples:

• A delivery truck collides with a worker on-site.
• Improper unloading of materials causes objects to fall.

6. Architects & Engineers

Design flaws or miscalculations can lead to structural failures and unsafe work conditions.

Example:

• A scaffold collapses due to flawed blueprints.

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How Do I Know If I Have a Valid Third-Party Claim?

Ask yourself the following:

• Was someone other than your employer involved in the accident?
• Did that person or company act negligently or recklessly?
• Did their actions directly cause your injury?
• Did your damages exceed what workers’ comp covers?

If you answered yes to these, you may have a valid third-party claim. An attorney can investigate further to confirm liability.

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What Compensation Is Available?

Third-party claims can help you recover:

• Medical Costs: Emergency treatment, surgeries, rehabilitation, long-term care.
• Lost Wages: Past income plus future lost earning capacity.
• Pain & Suffering: Physical pain, emotional trauma, and loss of enjoyment of life.
• Wrongful Death: If a loved one died, surviving family may recover for loss of support, funeral costs, and emotional grief.

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What Evidence Do I Need to Prove a Claim?

Winning a third-party case requires strong evidence:

• Photos or videos of the accident scene
• Witness statements from co-workers or bystanders
• OSHA reports and safety citations
• Maintenance or inspection records for equipment
• Medical records and expert opinions

Our legal team gathers and preserves this evidence quickly to build the strongest possible claim.

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How Does Third-Party Liability Work in San Diego?

Injured workers can file a lawsuit against third-parties who contributed to a workplace accident to recover financial compensation. 

Filing a Personal Injury Lawsuit

To hold a third party accountable, an injured worker must prove negligence or misconduct. This requires showing:

1. The third party had a duty of care to prevent harm.
2. They breached this duty through negligence or recklessness.
3. The breach directly caused the worker’s injuries.

Unlike workers’ compensation, which provides benefits regardless of fault, personal injury claims against third parties involve proving liability.

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What Is the Time Limit to File a Third-Party Claim in California?

In California, most personal injury claims must be filed within two years of the accident. If a government agency is involved, the window is just six months.

Waiting too long can mean losing your right to recover. That’s why it’s critical to act fast.

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Why Choose Hulburt Law Firm?

At Hulburt Law Firm, we have extensive experience with third-party construction claims in San Diego and throughout Southern California. Attorneys Leslie and Conor Hulburt are award-winning trial lawyers who understand both the legal and human sides of these complex cases.

We offer:

• Thorough investigations into all liable parties
• Strategic negotiation with insurers and corporations
• Trial-ready representation if your case goes to court
• Compassionate counsel every step of the way

We handle all construction accident cases on a contingency fee basis—meaning you don’t pay unless we win.

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Frequently Asked Questions

Can I file a third-party claim even if I received workers’ comp?
Yes. You can pursue both a workers’ comp claim and a third-party personal injury lawsuit.

What if multiple third parties were involved?
You can file claims against all parties who shared fault. California’s comparative negligence law allows multiple defendants to be held accountable.

How long does a third-party claim take?
Timelines vary, but most cases take several months to over a year, depending on complexity, evidence, and whether it settles or goes to trial.

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Contact Us for a Free Consultation

If you or someone you love has been injured in a construction accident involving a negligent third party, don’t leave your recovery to chance. Contact the trusted San Diego attorneys at Hulburt Law Firm for a free, confidential consultation.

• Complete our Online Contact Form
• Visit our San Diego Construction Accident Attorney page

The Truth Demands Justice—and we’re here to help you seek it.

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Related Content:

• Safety Regulations in California Construction 
• Common Construction Accident Injuries in San Diego
• Role of Construction Accident Attorney