Third-Party Claims in Offshore Injury Cases: Beyond Your Employer

When you are hurt offshore, your employer is often not the only party at fault, and a claim against your employer is often not your only source of recovery. Third-party claims are how injured maritime workers reach the full value of their case, especially when workers’ compensation alone falls short.

This article is for informational purposes only and does not constitute legal advice. Third-party liability and the rules for protecting your benefits are complex and fact-specific; before acting or settling, consult a licensed maritime attorney.

Key Facts at a Glance

• A third-party claim targets a non-employer whose negligence or defective product contributed to a maritime injury (Source: Cornell LII).
• Longshore workers can sue a negligent vessel owner for vessel negligence under 33 U.S.C. § 905(b) (Source: Cornell LII).
• The vessel’s duties to a longshore worker are the turnover duty, the active control duty, and the duty to intervene, Scindia Steam Navigation Co. v. De Los Santos, 451 U.S. 156 (1981) (Source: Justia).
• Other third parties, such as equipment manufacturers and contractors, can be sued under 33 U.S.C. § 933 (Source: Cornell LII).
• Products liability is part of general maritime law, East River Steamship Corp. v. Transamerica Delaval, 476 U.S. 858 (1986) (Source: Justia).
• Under Section 933, the employer or its insurer holds a lien on a third-party recovery for benefits it paid (Source: Cornell LII).
• A Longshore worker generally must obtain the employer’s written approval before settling a third-party claim, or risk losing future benefits (Source: Cornell LII).

Maritime injury law channels claims against your own employer into specific systems: the Jones Act for seamen and the Longshore and Harbor Workers’ Compensation Act for many other maritime workers. Those systems have real limits. The Longshore Act is no-fault but pays only capped wage benefits and medical care, with nothing for pain and suffering. Even a Jones Act recovery can be constrained by comparative fault and the financial realities of suing an employer. Third-party claims open a separate, often larger source of compensation by reaching the other companies whose conduct or products caused the harm.

This guide explains how third-party claims work in offshore injury cases: what they are, why they matter so much, who can be sued, the Section 905(b) vessel negligence claim, maritime product liability, how these claims interact with Jones Act and Longshore benefits, and the employer’s lien that can quietly eat into a recovery if it is not handled correctly.

What Is a Third-Party Claim in a Maritime Injury Case?

A third-party claim is a lawsuit against someone other than your employer who shares responsibility for your injury. While your employer is generally addressed through the Jones Act or Longshore benefits, the offshore workplace is crowded with other companies: the manufacturer of the winch or crane, the owner of the vessel you were working aboard, the operator of the platform, and the various contractors and subcontractors on the job. When one of them is negligent, or supplies defective equipment, the injured worker can bring an ordinary tort claim against that party for full damages. These claims are governed by general maritime law and, for Longshore workers, are expressly preserved by statute. The third-party claim runs in parallel with the worker’s benefits, and it is frequently where the largest part of a recovery comes from.

Why Do Third-Party Claims Matter So Much?

Third-party claims matter because they unlock damages that the compensation systems withhold. The Longshore Act is a no-fault bargain: a covered worker gets medical care and a portion of lost wages without proving fault, but generally cannot recover pain and suffering, full lost earning capacity, or loss of consortium from the employer (Source: Cornell LII). A third-party tort claim has no such cap; a worker who proves a manufacturer or vessel owner was at fault can recover the full range of personal injury damages. That difference is enormous for a seriously injured worker, because the no-fault benefits often cover only a fraction of a lifetime loss. For Longshore and OCSLA workers in particular, a third-party claim is frequently the only route to full compensation. The table below contrasts the two sources of recovery.

Who Can Be a Third Party in an Offshore Injury?

Almost any non-employer whose conduct or product caused the injury can be a third party. Common defendants include the manufacturers of cranes, winches, wire rope, valves, and safety equipment that fail; the owner, operator, or charterer of a vessel the worker was on or near; the operator of a fixed platform; general contractors and subcontractors responsible for unsafe conditions or operations; staffing and service companies; and the owners or crews of other vessels involved in a collision or allision. On a multi-employer offshore job, responsibility is often shared among several companies, and identifying every potentially liable party early is part of building the case. Which theory applies, vessel negligence, product liability, or ordinary negligence, depends on who the defendant is and what role they played in causing the harm.

What Is a Section 905(b) Vessel Negligence Claim?

Section 905(b) is the Longshore Act’s built-in third-party claim against a negligent vessel. While a covered worker cannot sue the employer in tort, 33 U.S.C. § 905(b) preserves the right to sue the owner or operator of a vessel for the vessel’s own negligence (Source: Cornell LII). The Supreme Court defined the vessel’s duties in Scindia Steam Navigation Co. v. De Los Santos, 451 U.S. 156 (1981): the turnover duty to hand over the ship and its equipment in reasonably safe condition, the active control duty over areas the vessel still controls, and the duty to intervene when it knows of a dangerous condition the contractor is failing to address (Source: Justia). Where the employer also owns the vessel, the worker may sue it in its separate capacity as a vessel owner. We cover this remedy in depth in our Section 905(b) guide.

Can You Sue a Manufacturer for Defective Equipment?

Yes. Maritime law recognizes product liability, so a worker hurt by defective equipment can sue the manufacturer. The Supreme Court confirmed that products liability is part of general maritime law in East River Steamship Corp. v. Transamerica Delaval, Inc., 476 U.S. 858 (1986) (Source: Justia). A claim can rest on a defective design, a manufacturing defect, or a failure to warn of a known danger, and offshore equipment, from crane controls to wire rope to chemical systems, is a frequent source of these claims. One important limit comes from East River itself: under the economic loss doctrine, when a defective product damages only itself and causes purely economic loss, the remedy lies in contract, not tort. That limit rarely bars a personal injury claim, where the worker, not just the product, was harmed, but it shapes how these cases are framed.

Worked example: A deckhand is injured when a crane’s load-brake fails because of a design defect. He receives Longshore medical and wage benefits from his employer, which is not at fault for the design. He also sues the crane manufacturer in product liability for the full value of his injury, including pain and suffering, and the vessel owner under Section 905(b) if vessel negligence contributed.

How Do Third-Party Claims Work With Jones Act and Longshore Benefits?

Third-party claims stack on top of the worker’s primary remedy rather than replacing it. A Jones Act seaman sues the employer under the Jones Act and can separately sue third parties, such as a product manufacturer or another vessel, in tort. A Longshore worker collects no-fault benefits from the employer and pursues third parties under Sections 905(b) and 933. The claims proceed together, but the recoveries are coordinated so the worker is not paid twice for the same loss. For Longshore and OCSLA workers the third-party claim is especially valuable because it is the only place pain and suffering and full earning-capacity losses can be recovered. The interaction is technical, and how the benefits and the third-party recovery are sequenced affects how much the worker keeps, which is why these claims are handled together rather than in isolation.

What Is the Employer’s Lien on a Third-Party Recovery?

When a Longshore worker recovers from a third party, the employer or its insurer is generally entitled to be repaid the benefits it already paid, through a statutory lien under 33 U.S.C. § 933 (Source: Cornell LII). Just as important, the worker usually must obtain the employer’s written approval before settling a third-party claim; settling without it can forfeit the right to future Longshore benefits, a trap that has cost unwary workers dearly. Handled correctly, the lien is negotiated and reduced, often to account for the worker’s attorney’s fees and the realities of the recovery, leaving the worker with a substantial net amount. Handled carelessly, it can swallow much of the recovery or jeopardize ongoing benefits. This is the single most technical part of a third-party case and the place where experienced counsel earns its keep.

How Do Defendants Defend Third-Party Claims?

Third-party defendants have a familiar set of defenses. A manufacturer argues its product was not defective, that the worker or employer misused or altered it, or that the economic loss doctrine bars the claim. A vessel owner sued under Section 905(b) argues it satisfied the Scindia duties and that the dangerous condition was under the employer-contractor’s control. All third parties raise comparative fault, which reduces but does not eliminate recovery in maritime cases, and they police the statute of limitations, generally three years for maritime tort claims (Source: Cornell LII). Defendants also exploit the settlement-approval and lien rules, sometimes structuring offers to create conflicts between the worker and the Longshore carrier. The worker’s response is thorough investigation of every potentially liable party, expert proof of the defect or negligence, and careful coordination of any settlement with the employer’s lien.

Key Authorities on Maritime Third-Party Claims

Frequently Asked Questions

What is a third-party claim in a maritime injury case?

It is a lawsuit against someone other than your employer, such as an equipment manufacturer, a vessel owner, a platform operator, or a contractor, whose negligence or defective product helped cause your injury. Unlike no-fault benefits, a third-party claim can recover full damages, including pain and suffering.

Can I file a third-party claim and still get Longshore benefits?

Yes. Longshore benefits and third-party claims work together. You collect no-fault medical and wage benefits from your employer and separately sue any negligent third party under Sections 905(b) and 933. The recoveries are coordinated so you are not paid twice for the same loss, and the employer holds a lien for benefits it paid.

What is a Section 905(b) claim?

A Section 905(b) claim is a Longshore worker’s negligence lawsuit against the owner or operator of a vessel. Under Scindia, the vessel owes a turnover duty, an active control duty, and a duty to intervene. It is the main third-party route for harbor workers injured by a vessel’s negligence.

Can I sue the manufacturer of equipment that injured me?

Yes. Products liability is part of general maritime law under East River, so a worker hurt by a defectively designed or manufactured product, or one with an inadequate warning, can sue the manufacturer for full damages. The economic loss doctrine limits claims where only the product itself is damaged, but that rarely bars a personal injury claim.

Why is a third-party claim more valuable than workers’ compensation?

Because compensation systems like the Longshore Act are no-fault but capped: they pay medical care and partial wages, with nothing for pain and suffering or full earning-capacity loss. A third-party tort claim has no such cap, so it often recovers far more for a seriously injured worker.

Do I need my employer’s permission to settle a third-party claim?

Often yes. Under Section 933, a Longshore worker generally must obtain the employer’s written approval before settling a third-party claim, and settling without it can forfeit future benefits. The employer or its insurer also holds a lien on the recovery for benefits already paid, which is usually negotiated down.

How long do I have to file a maritime third-party claim?

Maritime tort claims generally carry a three-year statute of limitations, though specific deadlines can vary by the defendant and the theory. Because evidence such as the failed equipment and vessel records must be preserved, the practical deadline to start building the case is much earlier. Have your claim reviewed promptly.

References and Sources

1. Exclusiveness of liability and vessel negligence, 33 U.S.C. § 905, Cornell LII
2. Compensation for injuries where third persons are liable, 33 U.S.C. § 933, Cornell LII
3. Scindia Steam Navigation Co. v. De Los Santos, 451 U.S. 156 (1981), Justia
4. East River Steamship Corp. v. Transamerica Delaval, Inc., 476 U.S. 858 (1986), Justia
5. Jones Act, 46 U.S.C. § 30104, Cornell LII
6. Maritime statute of limitations, 46 U.S.C. § 30106, Cornell LII
7. Offshore Injury Help, Section 905(b) vessel negligence claims
8. Offshore Injury Help, Longshore and Harbor Workers’ Compensation Act overview

Editorial Standards and Review

This article follows a zero-hallucination policy. Every legal rule, case holding, and statute is traced to a primary or authoritative source linked inline and listed above; Supreme Court holdings are cited to the official reporter and verified against Justia, and statutory text is verified against the U.S. Code. We are not a law firm and not attorneys, and nothing here is legal advice. Whether a third party is liable, and how a recovery interacts with your benefits and any lien, depends on the specific facts, so an injured worker should consult a licensed maritime attorney before acting or settling. Last reviewed June 2026. See our editorial standards.