Negligence

Negligence is the legal claim that someone caused harm by failing to act with the care a reasonable person or company would have used in the same situation. To prove negligence, a plaintiff generally must show four things: a duty to act carefully, a breach of that duty, that the breach caused the injury, and actual damages. In asbestos cases, this often means showing a company knew or should have known asbestos was dangerous and failed to warn workers or take protective steps.

Origin

The word comes from the Latin negligentia, meaning carelessness. Modern negligence law took shape in 19th-century English common law, especially in the 1932 case Donoghue v. Stevenson, which established the general duty to avoid foreseeable harm to others.

Significance in Asbestos Context

Negligence is one of the most common legal theories used in asbestos lawsuits, often pleaded alongside strict liability and failure to warn. The heart of an asbestos negligence claim is usually what the defendant knew about asbestos hazards and when they knew it, internal memos, industry studies (such as those by the Saranac Laboratory in the 1930s), and trade association documents are frequently used to show companies were aware of the risk decades before warning workers. For patients, this means your case may turn on records of corporate knowledge from the era when you were exposed, which is why detailed work histories (employers, job sites, products, dates) are so important. Defendants commonly argue that the dangers were not yet known during the exposure period, so the standard of care is judged against what was reasonably knowable at that time.

Example Sentence

His attorneys built the negligence claim around 1940s company memos showing the manufacturer knew asbestos caused lung disease but continued selling insulation products without warnings.

Related Terms

Duty of Care, Breach of Duty, Causation, Failure to Warn, Strict Liability, State of the Art

Notes

• Work with your legal team to document every job, job site, product, and approximate date of exposure. Corporate knowledge during those specific years is central to a negligence claim.
• Preserve any old pay stubs, union records, military service records, photographs, or co-worker contact information; these help establish when and where exposure occurred.
• Ask whether your case will also be brought under strict liability or failure-to-warn theories, which can have different proof requirements than negligence.
• Negligence claims have strict filing deadlines (statutes of limitation) that often start running at diagnosis. Don't delay speaking with an attorney experienced in asbestos litigation.