Chaffey; Canellis; Mulheron; McKnight v Independent Commission Against Corruption

Lance William Chaffey, Stephen Francis Canellis, William Edward Mulheron, and Kenneth John McKnight (the applicants) sought special leave to appeal to the High Court of Australia against a decision of the Independent Commission Against Corruption (ICAC) (the respondent). The core of the dispute concerned the procedural fairness afforded to the applicants during ICAC proceedings, particularly in relation to the right to cross-examine a witness named Smith, and the impact of public hearings on their reputations.

The legal issues before the High Court involved determining the significance of cross-examination in the context of ICAC investigations, and whether the failure to allow adequate cross-examination, especially when a witness was unprepared on material matters, constituted a breach of procedural fairness. A related issue was whether the public nature of the proceedings, combined with the alleged inadequacy of cross-examination, amplified the damage to the applicants' reputations to a degree that warranted intervention. The applicants argued that the ICAC's approach to cross-examination, particularly concerning Mr. Smith, converted the publicity of the hearings into a matter of grave damage and a breach of natural justice.

The applicants contended that the majority decision below had not correctly assessed the relevance of cross-examination and had failed to give sufficient weight to the fact that Mr. Smith was unprepared to be cross-examined on crucial aspects of the evidence. They submitted that while the interest in reputation is recognized as a matter attracting a duty to observe natural justice, the specific circumstances of this case, involving the interplay of public hearings and limited cross-examination, represented a novel application of these principles. The applicants argued for a flexible approach to natural justice, consistent with recent trends in judicial decisions, to encompass the damage to reputation caused by the proceedings.