Procedural Fairness in Australian Law

Introduction

Procedural fairness, also referred to as natural justice, is a foundational principle of Australian administrative and judicial law requiring that decision-makers exercise their powers fairly and impartially. The doctrine encompasses two core rules: the hearing rule (the right to be heard) and the bias rule (the right to an impartial decision-maker). These rules are not fixed or rigid but are “flexible and adaptable” to the circumstances of each case.

The Hearing Rule

The hearing rule requires that a person whose rights, interests, or legitimate expectations will be affected by a decision must be given an opportunity to be heard. The content of the rule varies according to the statutory context, the nature of the decision, and the seriousness of the consequences.

The modern Australian approach was established in Kioa v West (1985) 159 CLR 550, where Mason J articulated the principle that procedural fairness is “flexible and adaptable” to the circumstances of each case. His Honour stated that “what is required by the principles of natural justice is a fair hearing, not a hearing that is as favourable as possible to the person affected.” The case concerned the cancellation of a visa and the application of procedural fairness to immigration decisions.

The content of the hearing rule generally includes:

• Notice of the proposed decision and the issues to be considered
• Disclosure of adverse material that is “credible, relevant and significant” to the decision
• Opportunity to respond to adverse material
• Legal representation, though this is not invariably required

In SZQQQ v Minister for Immigration and Border Protection (2015) 231 CLR 362, the High Court held that the threshold for the disclosure of adverse information is whether the information is “credible, relevant and significant” to the decision. This standard sets a lower bar than materiality, requiring disclosure of information that could rationally affect the assessment of the case.

Legitimate Expectation

The doctrine of legitimate expectation functions as a trigger or content modifier for procedural fairness obligations. In Minister for Immigration and Ethnic Affairs v Teoh (1995) 183 CLR 273, the High Court held that the ratification of a treaty by Australia gives rise to a legitimate expectation that administrative decision-makers will act consistently with its provisions.

However, the doctrine has been substantially qualified. In Re Minister for Immigration and Multicultural Affairs; Ex parte Lam (2003) 214 CLR 1, McHugh and Gleeson JJ questioned the utility of the “legitimate expectation” label, with Gleeson CJ observing that it may “add nothing to the requirement of fairness.”

The High Court in Minister for Immigration and Border Protection v WZARH (2015) 256 CLR 78 confirmed that Australian law does not recognise substantive legitimate expectations — expectations that a particular outcome will be provided. The doctrine remains procedural only in its operation.

The Bias Rule

The bias rule requires that a decision-maker be impartial and free from prejudice. The test for apprehended bias in Australian law is the “reasonable apprehension of bias” test established in Ebner v Official Trustee in Bankruptcy (2000) 205 CLR 337.

The joint judgment of Gleeson CJ, McHugh, Gummow, and Hayne JJ articulated the “double may” test: a judge should be disqualified if a “fair-minded lay observer might reasonably apprehend that the judge might not bring an impartial mind” to the resolution of the matter. This requires the party alleging bias to identify the matter said to give rise to the apprehension and to articulate the logical connection between that matter and the feared deviation from impartiality.

The Ebner test applies to:

• Actual bias: where the decision-maker has a pre-existing interest or prejudice
• Apprehended bias: where the circumstances give rise to a reasonable perception of partiality
• Structural bias: where the institutional framework creates an unacceptable risk of partiality (Isbester v Knox City Council (2015) 255 CLR 135)

Waiver of Procedural Fairness

Procedural fairness may be waived by the person entitled to it. Waiver requires “full knowledge” of the right and “unequivocal conduct” inconsistent with its exercise (Vakauta v Kelly (1989) 167 CLR 568). Waiver cannot be inferred merely from participation in the proceedings.

Effect of a Breach

A breach of procedural fairness constitutes jurisdictional error, rendering the decision void (ab initio) rather than merely voidable. In Minister for Immigration and Multicultural Affairs v Bhardwaj (2002) 209 CLR 597, the High Court held that a decision infected by jurisdictional error is “a decision that has been made without jurisdiction and is, for that reason, a nullity.”

The practical consequence is that the decision-maker must reconsider the matter according to law. However, in Hossain v Minister for Immigration and Border Protection (2018) 264 CLR 123, the High Court introduced a “materiality” requirement: not every breach of procedural fairness will invalidate a decision. The breach must be “material” in the sense that it could realistically have resulted in a different outcome.

The No Evidence Ground

The “no evidence” ground of review is a component of procedural fairness in some contexts. Under s 5(1)(h) of the Administrative Decisions (Judicial Review) Act 1977 (Cth), a decision may be reviewed where there was “no evidence or other material to justify the making of the decision.” The common law recognises a similar ground, though its boundaries are contested.

Reasons for Decision

The requirement to provide reasons for decision is a feature of procedural fairness in some contexts. The Administrative Decisions (Judicial Review) Act 1977 (Cth) imposes a statutory duty to give reasons upon request (s 13). At common law, there is no general duty to provide reasons, though such a duty may arise in particular statutory contexts (Public Service Board of NSW v Osmond (1986) 159 CLR 656).

Conclusion

Procedural fairness in Australia is a dynamic and context-sensitive doctrine. Its centrality to Australian public law reflects a fundamental commitment to the values of fairness, accountability, and legality in the exercise of public power.