Wicks; Sheehan v State Rail Authority of New South Wales known as State Rail

The High Court of Australia considered an appeal from the Court of Appeal of New South Wales concerning the liability of the State Rail Authority of New South Wales for injuries sustained by two former employees, Wicks and Sheehan. The employees had been exposed to asbestos during their employment and subsequently developed asbestos-related diseases. They brought proceedings against State Rail alleging negligence and breach of statutory duty.

The central legal issues before the High Court were whether State Rail owed a duty of care to its employees regarding exposure to asbestos, the scope of that duty, and whether State Rail had breached that duty. The court also had to consider the principles of causation, specifically whether the breaches of duty by State Rail had materially contributed to the development of the employees' diseases, and the application of the rule in *Bonnington Castings Ltd v Wardlaw* in the context of multiple causes of asbestos exposure.

The High Court affirmed that employers owe a duty of care to their employees to take reasonable steps to prevent foreseeable harm, including harm from exposure to asbestos. The court found that State Rail had breached this duty by failing to implement adequate safety measures and provide appropriate warnings to its employees about the dangers of asbestos. Applying the principles of causation, the court held that if an employer's breach of duty materially contributed to the development of an asbestos-related disease, even if other exposures also contributed, the employer could be held liable. The court distinguished the present case from situations where the plaintiff's injury was caused by a single, identifiable breach, emphasizing that in cases of cumulative exposure, the question is whether the breach was a material cause.

The High Court dismissed the appeal, upholding the decision of the Court of Appeal of New South Wales.