R v Watson; Ex parte Australian Workers' Union

The High Court of Australia considered an application for a writ of prohibition brought by the Australian Workers' Union (AWU) against R. Watson, the Registrar of the Australian Industrial Court. The AWU sought to prevent the Registrar from proceeding with an inquiry into the affairs of the union, which had been initiated following a complaint by a member. The core of the dispute concerned the validity of certain rules of the AWU and whether the Registrar had the power to conduct the inquiry under the relevant industrial legislation.

The central legal issue before the High Court was whether the Registrar possessed the statutory authority to investigate the AWU's affairs based on the complaint received. This required the Court to interpret the provisions of the relevant legislation, specifically concerning the Registrar's powers to inquire into the conduct of registered organisations and the validity of their rules. The Court also had to determine whether the rules of the AWU, which were the subject of the complaint, were validly made and enforceable under the Act.

The High Court, in its joint judgment, held that the Registrar did not have the power to conduct the inquiry as sought. The Court reasoned that the statutory provisions empowering the Registrar to investigate were confined to specific circumstances not present in this case. Furthermore, the Court found that the rules of the AWU in question were not invalid, and therefore, the basis for the Registrar's proposed inquiry was unfounded. The Court concluded that the Registrar had acted in excess of his statutory powers.

The High Court made absolute the order nisi for a writ of prohibition, thereby preventing the Registrar from proceeding with the inquiry.