How Product and Equipment Defects Fit Into Workplace Claims

When a factory worker in Louisiana is injured by defective machinery, the legal landscape opens beyond workers' compensation. The Louisiana Products Liability Act (LPLA) provides a direct claim against the manufacturer of the product that caused the injury — a claim that can recover damages that the comp system never pays, including pain and suffering, full lost wages, and loss of enjoyment of life. Understanding how product defect claims work, and how they interact with workers' comp, is essential for any factory worker dealing with a serious industrial injury.

The Louisiana Products Liability Act: An Overview

Louisiana RS 9:2800.51 through 9:2800.60 — the Louisiana Products Liability Act — is the exclusive basis for products liability claims against manufacturers in Louisiana. The LPLA replaced the prior common-law negligence and warranty theories that had previously coexisted in Louisiana products cases. If you want to sue a manufacturer in Louisiana, you must do so under the LPLA. No other theory of recovery against a manufacturer is available.

A manufacturer is liable under the LPLA if:

• The manufacturer placed the product into commerce
• The product was unreasonably dangerous in one of four ways
• The unreasonably dangerous characteristic of the product caused the claimant's damage
• The claimant's damage arose from a reasonably anticipated use of the product

"Manufacturer" under the LPLA means any person or entity in the business of manufacturing a product for placement into trade or commerce, including sellers who are in the business of selling the product who exercise control over or have particular knowledge about the manufacture of the product. In factory injury cases, this usually means the company that designed and built the machine or tool that caused the injury.

The Four Theories of LPLA Liability

1. Construction or Composition Defect

Under RS 9:2800.55, a product is unreasonably dangerous in construction if, at the time the product left the manufacturer's control, the product deviated in a material way from the manufacturer's specifications or performance standards for the product or from otherwise identical products manufactured by the same manufacturer.

We explain how fault percentages and deadlines work after a Louisiana injury in our 2026 Tort Reform Survival Guide.

In factory injury cases, this applies when a specific unit of a machine was built incorrectly — a weld failed, a component was installed improperly, a material fell below specification. The flaw is in the individual unit, not the design class as a whole. These cases often require evidence of what the manufacturer's own quality control records show, including any inspection failures associated with the unit that caused the injury.

2. Design Defect

Under RS 9:2800.56, a product is unreasonably dangerous in design if, at the time the product left the manufacturer's control, there existed an alternative design for the product that was capable of preventing the claimant's damage, and the likelihood that the product's design would cause the claimant's damage and the gravity of that damage outweighed the burden on the manufacturer of adopting such alternative design and the adverse effect, if any, of such alternative design on the utility of the product.

This is the most commonly litigated LPLA theory in factory injury cases. The analysis involves a risk-utility balancing test — the plaintiff must show that a feasible alternative design existed and that the manufacturer's choice to use the current design, given the known risks, was unreasonable.

In machine guarding cases, the analysis often focuses on:

• Whether industry standards (ANSI, OSHA, ISO) called for the type of guarding that was absent
• Whether comparable machines from other manufacturers incorporated the safer design at the time of manufacture
• Whether the manufacturer's own engineering records show awareness of the injury risk and evaluation of safer alternatives
• Whether the cost of implementing the safer design would have been commercially reasonable relative to the product's price and utility

3. Inadequate Warning

Under RS 9:2800.57, a product is unreasonably dangerous because of an inadequate warning if, at the time the product left the manufacturer's control, the product possessed a characteristic that may cause damage and the manufacturer failed to use reasonable care to provide an adequate warning of such characteristic and its danger to users and handlers of the product.

In factory settings, inadequate warning claims arise most often in chemical exposure cases — where a substance lacked adequate labeling under federal OSHA HazCom standards, or where safety data sheets (SDS) failed to disclose known health risks — and in equipment cases where the manufacturer failed to warn about the hazardous potential of specific machine features, maintenance scenarios, or operating conditions.

The LPLA does not require a warning if the user already knew or should have known of the danger. However, in industrial settings, courts examine whether the worker had the specific technical knowledge to appreciate the danger — general awareness that machines can be dangerous is not the same as specific knowledge of the machine's particular failure mode.

4. Breach of Express Warranty

Under RS 9:2800.58, a product is unreasonably dangerous when it does not conform to an express warranty made by the manufacturer about the product if the express warranty induced the claimant to use the product and the claimant's damage was caused by the failure of the product to conform to the express warranty. This theory is less commonly the primary basis for factory injury LPLA claims but can be relevant when a manufacturer made specific safety representations in marketing materials or operator manuals that the product failed to satisfy.

How LPLA Claims Interact With Workers' Comp

Workers' comp from your employer and an LPLA claim against the machine manufacturer are separate claims against separate defendants. Louisiana law allows you to pursue both simultaneously. However, there is a coordination-of-benefits mechanism: if you recover in a third-party LPLA suit for the same damages that comp has already paid — medical expenses and lost wages, for example — the employer's workers' comp insurer has a right of subrogation. This means the insurer can claim reimbursement from your LPLA recovery for what it paid out.

The practical consequence is that your net recovery in an LPLA case against a machine manufacturer is not automatically reduced dollar-for-dollar by every comp payment. Pain and suffering, loss of enjoyment of life, and future damages not yet paid by comp are not subject to subrogation. A skilled attorney structures the LPLA case to maximize the portion of recovery that is outside the comp reimbursement right.

Identifying a Potential LPLA Claim After a Factory Injury

Not every factory injury produces an LPLA claim. The threshold question is whether a product — a machine, a tool, a chemical, a component — contributed to the injury in a way that reflects an unreasonably dangerous characteristic of that product. Some indicators that an LPLA claim may exist:

• The machine lacked a guard that comparable machines from other manufacturers include as standard
• The machine had a history of the same type of malfunction before the incident
• The OSHA standard or relevant industry safety standard called for protection that the machine did not provide
• A chemical involved in the injury lacked adequate labeling or SDS documentation
• A structural or mechanical failure occurred in a component operating well within its rated parameters
• The manufacturer issued a recall, safety bulletin, or product modification related to the type of incident that caused the injury

This assessment requires investigation. The machine's make, model, year of manufacture, serial number, and maintenance history all matter. The product's original operator manual, engineering drawings, and any known modification history are relevant. A liability engineer or industrial safety expert may be needed to evaluate the machine's design against applicable standards.

The One-Year Prescriptive Period

Louisiana Civil Code Art. 3492 establishes a one-year prescriptive period for delictual (tort) claims, including LPLA claims. The clock begins running from the date of the injury or the date the injured person discovered — or reasonably should have discovered — the injury and its cause. In most factory injury cases, the cause is known at the time of the injury, so the one-year period begins at the incident date.

Receiving workers' comp benefits does not toll (pause) the prescriptive period for an LPLA claim against a manufacturer. The two claims are against different defendants. Workers collecting comp while the one-year window expires on their LPLA claim permanently lose the products liability recovery. This is one of the primary reasons prompt attorney consultation is critical after any serious factory injury.

Substantial Modification and the LPLA

Under RS 9:2800.53(5), "damage" covered by the LPLA does not include damage caused by an unreasonably dangerous characteristic of a product that was created by a substantial alteration or modification of the product by someone other than the manufacturer. If an employer removed a guard from a machine after purchase, and it was that removal — not an original design defect — that caused the injury, the LPLA claim against the manufacturer is significantly weakened.

However, substantial modification does not automatically bar an LPLA claim. Louisiana courts look at whether the modification was reasonably foreseeable to the manufacturer. A machine manufacturer who designed the guard as easily removable without tools, knowing that production workers routinely remove guards for cleaning, may not escape LPLA liability even when the employer removed the guard — because the manufacturer could foresee that its design would lead to unsafe guard removal. This foreseeability question is highly fact-specific.

Legal Disclaimer: This article provides general information about Louisiana products liability law applicable to workplace injury claims and is not legal advice. The LPLA and its interpretation by Louisiana courts evolves over time. Consult a licensed Louisiana personal injury attorney for guidance specific to your case. Reading this article does not create an attorney-client relationship.