National Health Act 1953

The Minister may appoint a person to act as an additional member of the Tribunal:

during a vacancy in an office of an additional member; or

during any period, or during all periods, when an additional member is unavailable to perform his or her duties.

For rules that apply to acting appointments, see section 33A of the Acts Interpretation Act 1901.

Where the Tribunal as constituted for the purpose of a proceeding includes a person acting or purporting to be appointed under this section, or a person so acting or purporting to be appointed has done any act, the validity of any decision of, or of any direction given or other act done by, the Tribunal as so constituted, or of the act done by the person so acting or purporting to be appointed, shall not be called in question in any proceeding on the ground that the occasion for the person to act or for the appointment of the person had not arisen or that the occasion for the person’s appointment had passed or the person’s appointment had ceased to have effect.