Hunter and New England Local Health District v McKenna

The High Court of Australia heard appeals from the Court of Appeal of the Supreme Court of New South Wales concerning alleged negligence by the Hunter and New England Local Health District and its medical staff. The dispute arose from the discharge of a mentally ill person, who subsequently caused harm to the respondents, the relatives of that person. The respondents claimed the hospital and its staff owed them a common law duty of care to protect them from harm caused by the discharged patient.

The central legal issue before the High Court was whether the hospital and its medical staff owed a common law duty of care to protect third parties against harm caused by a mentally ill person upon their discharge. This question required the Court to consider whether such a common law duty was inconsistent with the statutory duties and powers conferred upon medical superintendents and hospitals under the *Mental Health Act 1990* (NSW) regarding the admission, detention, and discharge of mentally ill persons.

The High Court reasoned that the *Mental Health Act 1990* (NSW) comprehensively prescribed the powers, duties, and responsibilities of doctors and hospitals in managing mentally ill persons, including the conditions for their admission, detention, and discharge. The Act stipulated that a person could only be detained if the medical superintendent was of the opinion that no less restrictive care was appropriate and reasonably available. The Court found these statutory provisions to be inconsistent with the imposition of a common law duty of care owed by the hospital and its staff to protect third parties from harm caused by a discharged patient. Consequently, the Court concluded that the appellant hospital and Dr Coombes did not owe the respondents a relevant duty of care. The appeals were allowed, and the orders of the Court of Appeal were set aside, with the appeal to that Court being dismissed.