R v Commonwealth Conciliation and Arbitration Commission; Ex parte

The applicant, the Commonwealth, sought a writ of prohibition against the Commonwealth Conciliation and Arbitration Commission and its member, Mr. J. R. Donovan. The dispute concerned the Commission's purported exercise of jurisdiction to make an award for certain employees of the Commonwealth, specifically those employed by the Postmaster-General's Department. The Commonwealth contended that the Commission lacked the constitutional and legislative power to make such an award.

The central legal issue before the High Court was whether the Commonwealth Conciliation and Arbitration Act 1904 (Cth) validly conferred upon the Commission the power to make an award binding upon the Commonwealth itself in relation to its employees. This question involved an interpretation of the constitutional reach of the arbitration power and the scope of the legislative authority of the Commonwealth Parliament to bind the Crown in right of the Commonwealth.

The Court, by majority, held that the Commonwealth Conciliation and Arbitration Act did not empower the Commission to make an award binding on the Commonwealth. The reasoning focused on the principle that the Crown, in its sovereign capacity, cannot be bound by legislation unless expressly or by necessary implication it is so provided. The Court found no such express provision or necessary implication in the Act that would subject the Commonwealth to the compulsory arbitration jurisdiction of the Commission. The constitutional power to make laws with respect to conciliation and arbitration did not extend to compelling the Commonwealth to submit to an award made by the Commission.

The Court made absolute the order nisi for a writ of prohibition, thereby preventing the Commission from proceeding to make an award in the matter.