R v Blackburn; Ex parte

The parties involved were R (the Crown) and Blackburn, who sought a writ of prohibition. The dispute concerned the jurisdiction of a Conciliation Commissioner appointed under the *Industrial Arbitration Act 1904* (Cth) to make certain orders. The matter came before the High Court of Australia.

The central legal issue before the High Court was whether the Conciliation Commissioner had the power to make an order that would have the effect of preventing a person from being employed by a particular employer. This question turned on the interpretation of the Commissioner's statutory powers under the *Industrial Arbitration Act 1904* (Cth).

The High Court held that the Commissioner's powers did not extend to making orders that would prevent a person from entering into or continuing in an employment relationship. The Court reasoned that such an order would be an unwarranted interference with the freedom of contract and the right to work, and that the Act did not grant such a broad and restrictive power. The Court applied principles of statutory interpretation, emphasizing that powers of such a significant nature must be clearly and unambiguously conferred by the legislation.

The High Court made absolute the order nisi for a writ of prohibition, thereby preventing the Conciliation Commissioner from making the proposed order.