Mesothelioma CASES

In English law, mesothelioma claims arise from asbestos exposure, usually decades before diagnosis. The disease is treated as an indivisible injury: once contracted, it is not meaningfully worsened by further exposure. Because long latency and multiple employers often make “but for” proof impossible, the courts apply a special causation rule for mesothelioma.

Definition and principles

Mesothelioma is a fatal asbestos-related cancer with a long latency period. Liability commonly involves several employers or occupiers who exposed the claimant to asbestos fibres at different times. Ordinary negligence principles (duty, breach, foreseeability) apply. The distinctive feature is causation: a defendant who materially increased the risk of the claimant contracting mesothelioma is treated as having caused the disease for civil liability purposes.

Causation and the Fairchild exception

Where multiple exposures by different defendants mean it is scientifically impossible to prove which exposure actually initiated the disease, a claimant may succeed by showing that the defendant’s breach made a material increase in risk of mesothelioma. This is a narrow exception to the normal “but for” test developed specifically for mesothelioma.

Apportionment and the Compensation Act 2006

Parliament has intervened so that, in England and Wales, a defendant found liable for materially increasing the risk is liable in full for the damage (subject to contribution claims between defendants). The court can then apportion responsibility between wrongdoers under contribution principles; the claimant need not chase every employer.

Insurance and the “trigger” issue

Employers’ liability insurance is compulsory. For historic policies, the key question is when the policy “triggers” for a long-tail disease. In mesothelioma, the courts have treated the relevant injury as occurring on exposure/inhalation during the policy period, so long-expired policies can be engaged.

Common scenarios

• Multiple employers: a worker exposed at several factories decades ago. Any employer whose breach materially increased risk can be sued; contribution sorts out shares between defendants and their insurers.
• Take-home exposure: secondary exposure (for example, contaminated work clothes) where duty and foreseeability are established on the facts.
• Occupiers / contractors: exposure during site work or refurbishment; duties turn on control of premises, knowledge of asbestos, and safe systems of work.

Damages and procedure

Damages are assessed on ordinary principles (pain and suffering, care, loss of earnings, services/dependency claims for families). Given prognosis, courts expedite trials. Provisional damages or interim payments are common. Where no solvent employer/insurer can be traced for post-1972 exposures, a statutory payment scheme may apply as a safety net.

Limitation

The primary limitation period for personal injury is three years from the date of knowledge (typically diagnosis) or from the claimant’s death for dependants, with the court retaining discretion to allow late claims where fair.

Practical importance

For claimants, assemble a detailed occupational and exposure history, contemporaneous records (where available), and medical evidence linking disease to asbestos. For defendants, test foreseeability and breach at the time, the factual basis for exposure, and contribution shares. Early insurer tracing and policy wording analysis are crucial in multi-employer cases.

See also: Industrial disease; Material increase in risk; Fairchild exception; Employers’ liability; Occupiers’ liability; Contribution; Employers’ Liability (Compulsory Insurance) Act 1969; Compensation Act 2006; Insurance trigger litigation; Limitation.