State of New South Wales v S

The State of New South Wales (the appellant) appealed to the High Court of Australia against a decision of the Supreme Court of New South Wales. The dispute concerned the appellant's liability for the death of a prisoner, S, who died by suicide while in custody. The prisoner's estate (the respondent) had brought proceedings against the appellant alleging negligence.

The High Court was required to determine whether the appellant owed a duty of care to the prisoner, and if so, whether that duty had been breached. Specifically, the court considered whether the appellant had taken reasonable steps to prevent the prisoner from taking his own life, given his known history of mental health issues and suicidal ideation. The central question was whether the appellant's actions or omissions constituted negligence at common law.

Heydon J, delivering the judgment of the High Court, found that the appellant did owe a duty of care to the prisoner. However, his Honour concluded that the appellant had not breached this duty. The court reasoned that the appellant had implemented a system of care that was, in the circumstances, reasonable and adequate to address the prisoner's known risks. The measures taken by the prison authorities, including observation and medical attention, were considered sufficient to discharge the duty of care owed. The appeal was therefore allowed.