Causation

Causation is the legal requirement that a plaintiff prove the defendant's conduct or product actually caused the injury being sued over. In asbestos cases, this usually means showing both that asbestos exposure caused the disease (general causation) and that exposure to a specific defendant's asbestos was a substantial factor in causing it (specific causation).

Origin

The word comes from the Latin causa, meaning "cause" or "reason." Modern tort law developed causation into two distinct inquiries, "cause in fact" and "proximate (legal) cause", through 19th- and 20th-century English and American common law decisions.

Significance in Asbestos Context

Causation is often the central battleground in an asbestos case. Your legal team will generally need to establish two things: (1) that asbestos can cause your disease (general causation, usually well-established for mesothelioma, lung cancer, and asbestosis), and (2) that exposure to each defendant's specific product or worksite was a substantial contributing factor to your illness (specific causation). Because asbestos diseases have long latency periods (often 20–50 years) and most patients were exposed to multiple products from multiple companies, proving specific causation requires careful reconstruction of your work and exposure history, sometimes supported by co-worker testimony, product identification, industrial hygiene analysis, and expert medical opinion. Defendants frequently attack causation by arguing the exposure to their product was too brief, too low, or that another company's product was the "real" cause.

Example Sentence

To meet the causation requirement, the attorneys gathered Navy service records, shipyard rosters, and a pulmonologist's report linking the patient's mesothelioma to the insulation products he handled in the 1970s.

Related Terms

Proximate Cause, Substantial Factor Test, Specific Causation, General Causation, Burden of Proof, Product Identification

Notes

• Start writing down every job, jobsite, and product you remember being around asbestos for. Even brief exposures can matter. Memory fades, and this list becomes the backbone of proving causation.
• Preserve employment records, union records, Social Security earnings statements, military service records (especially DD-214s for Navy veterans), and any old pay stubs or tax documents that confirm where you worked and when.
• Ask family members and former co-workers if they remember the brands of insulation, gaskets, joint compound, brakes, or other products you worked with. Product identification is often decisive for specific causation.
• Different states apply different causation standards (such as the "substantial factor" test, "frequency-regularity-proximity" test, or "any exposure" theories); ask your attorney which standard applies in the jurisdiction where your case will be filed.