Public Service Association of South Australia Incorporated v Industrial Relations Commission of South Australia & Anor

The Public Service Association of South Australia Incorporated (PSA) sought judicial review of a decision made by the Industrial Relations Commission of South Australia (IRC) and the State of South Australia. The dispute concerned the interpretation and application of the *Public Sector Management Act 1995* (SA) and the *Industrial Relations Act 1994* (SA) in relation to the PSA's right to represent its members in certain industrial matters before the IRC.

The High Court was required to determine whether the IRC had erred in law by refusing to grant the PSA leave to appear before it in proceedings concerning the interpretation of a certified agreement. Specifically, the court considered whether the PSA had a sufficient interest in the proceedings to be granted leave to intervene, and whether the IRC's refusal to grant leave was a jurisdictional error. The central question was whether the IRC had correctly applied the principles governing the intervention of third parties in industrial disputes.

The High Court held that the IRC had made a jurisdictional error. The Court reasoned that the PSA, as the industrial union representing the employees covered by the certified agreement, had a direct and substantial interest in the interpretation of that agreement. The IRC's refusal to grant leave to appear, based on a narrow interpretation of its powers and the PSA's standing, failed to give adequate consideration to the PSA's statutory role and the importance of ensuring that agreements affecting its members were properly interpreted. The Court affirmed the principle that industrial tribunals should adopt a broad and liberal approach when considering the intervention of parties with a legitimate interest in industrial matters.

The High Court ordered that the decision of the Industrial Relations Commission of South Australia be quashed and remitted to the Commission for reconsideration according to law.