Principles to be applied
39 Procedural fairness is implied through the operation of a common law principle of interpretation and its precise content depends upon the particular statutory framework: Minister for Immigration and Border Protection v SZMTA [2019] HCA 3 at [34] (Bell, Gageler and Keane JJ).
40 The applicant relied, in particular, upon the reasoning of Allsop CJ (Collier J agreeing) in Degning v Minister for Home Affairs [2019] FCAFC 67. The reasoning of the Chief Justice in Degning exposes the importance of undertaking an evaluative, context specific inquiry when adjudging whether particular steps have resulted in procedural unfairness of a kind that was not contemplated by the kind of statutory power being exercised. Drawing on authority approved in SZBEL v Minister for Immigration and Multicultural and Indigenous Affairs [2006] HCA 63; (2006) 228 CLR 152 at [32], the Chief Justice said at [12]:
Applying these principles, Mr Degning was entitled to have his mind directed to the critical issues or facts on which the decision was likely to turn unless the recognition of the issue was, from the material with which he was provided, an obvious and natural conclusion to draw.
41 Degning was a case concerned with a decision by the Minister, but SZBEL was a case more like the present where there was a review in the Tribunal of a migration decision made by a delegate of the Minister. In SZBEL the Court said at [35]:
… But if the Tribunal takes no step to identify some issue other than those that the delegate considered dispositive, and does not tell the applicant what that other issue is, the applicant is entitled to assume that the issues the delegate considered dispositive are 'the issues arising in relation to the decision under review'. That is why the point at which to begin the identification of issues arising in relation to the decision under review will usually be the reasons given for that decision. And unless some other additional issues are identified by the Tribunal (as they may be), it would ordinarily follow that, on review by the Tribunal, the issues arising in relation to the decision under review would be those which the original decision-maker identified as determinative against the applicant.
42 These observations resonate in the circumstances of the present case where the Minister's delegate applied the earlier direction and the applicant was not informed in any way of the prospect that the terms of the new Direction No 79 might affect the assessment of the seriousness of his conduct until closing submissions.
43 However, the implied obligation of procedural fairness is only breached if there is practical injustice: SZMTA at [38]. It must concern an aspect of procedure that is of a kind that has practical consequences for the decision to be made in exercise of the statutory power.
44 Further, statutes which require a condition to be observed in the course of a decision-making process are not ordinarily interpreted as denying legal force and effect to every decision that might be made in breach of the condition. Rather, there is a threshold of materiality that must be breached before there is invalidity. Ordinarily, a breach of a condition of the exercise of statutory power cannot be material unless compliance could have resulted in the making of a different decision: Hossain v Minister for Immigration and Border Protection [2018] HCA 34; (2018) 264 CLR 123 at [29]-[31] (Kiefel CJ, Gageler and Keane JJ). Materiality is thus essential to the existence of jurisdictional error: SZMTA at [45].
45 The questions of practical injustice and materiality may be distinct. This was the view expressed by Edelman J in BVD17 v Minister for Immigration and Border Protection [2019] HCA 34 at [66]. In that decision, his Honour described the hearing rule as a statutory implication that will usually require the power to be exercised 'by respecting those requirements of justice that natural reason would require having regard to all of the circumstances': at [45]. Expressed in that way, it requires the observance of procedures that are natural to human beings. It incorporates their characteristic response to a particular situation in manifesting an innate sense of fairness. Natural reason would not require something to be done that was not necessary in order to afford practical justice. Therefore, inherent in that general description is an aspect of practicality; that is, what is reasonable and sensible having regard to the nature of the power being exercised and the circumstances in which it is being exercised. The requirement to be read into the statute as a matter of construction by implication is not one the content of which can be stated in abstract terms. It is a requirement that itself incorporates a need to consider context. So, you do not know what is necessary to meet the requirement until you know the particular circumstances.
46 However, in SZMTA, Bell, Gageler and Keane JJ appear to have treated practical injustice and materiality as different words used to express the same principle, namely that any denial of an opportunity to make submissions must be material to the Tribunal's decision: see [38] and [49]. Although the language 'realistic possibility that the Tribunal's decision could have been different' is ultimately used to describe what must be shown, so also is the language from the long standing authority of Stead v State Government Insurance Commission [1986] HCA 54; (1986) 161 CLR 141 at 145 where it was said that it is no easy task for the court to satisfy itself 'that what appears on its face to have been a denial of natural justice could have had no bearing on the outcome'. Also referenced was the following passage from the reasons of McHugh J in Re Refugee Review Tribunal; Ex Parte Aala [2000] HCA 57; (2000) 204 CLR 82 at [104] (a passage concerned with when a breach of natural justice has an invalidating effect rather than the content of the rules of natural justice):
Not every breach of the rules of natural justice affects the making of a decision. The decision-maker may have entirely upheld the case for the party adversely affected by the breach; or the decision may have turned on an issue different from that which gave rise to the breach of natural justice. Breach of the rules of natural justice, therefore, does not automatically invalidate a decision adverse to the party affected by the breach. This principle was acknowledged by this Court in Stead v State Government Insurance Commission when it said that 'not every departure from the rules of natural justice at a trial will entitle the aggrieved party to a new trial.' Nevertheless, once a breach of natural justice is proved, a court should refuse relief only when it is confident that the breach could not have affected the outcome because '[i]t is no easy task for a court ... to satisfy itself that what appears on its face to have been a denial of natural justice could have had no bearing on the outcome.' In this case, however, the denial of natural justice did not affect the outcome. After analysing the reasons of the second Tribunal and the history of the proceedings, the best conclusion is that the Tribunal would have found that the prosecutor did not have a well-founded fear of persecution even if it had had the four statements before it.
(footnotes omitted)
47 The warnings in these passages have been referred to in the context of judicial review where a failure to afford procedural fairness has been established and the Court must decide whether it affected the outcome: see, for example, WZARH v Minister for Immigration and Border Protection [2014] FCAFC 137; (2014) 230 FCR 130 at [28] (decision upheld on appeal).
48 There do appear to be two aspects to the inquiry. First, whether there has been breach of the rules of procedural fairness. Second, whether that breach was material and therefore invalidating. However, the inquiries merge to some degree. As procedural fairness is contextual, the implied obligation does not require procedural steps to be taken that would be pointless in the particular circumstances. It is focussed in a practical way upon what fairness demands in the particular situation. Also, procedural fairness may not require a particular step to be taken because the decision-maker has not been not provided with adequate material to demonstrate that any purpose would be served by taking that step. There may be no procedural unfairness if the Tribunal acts on the basis of an assessment (objectively justifiable), to the effect that no practical purpose would be served by taking a particular procedural step. However, such evaluations are to be undertaken without knowing how the decision-maker might reason as to contested issues. The content of a fair procedure is to be established by reference to the context at the time the procedure is established, not with foresight as to the outcome. Otherwise, there would be fundamental unfairness in the form of a decision-maker justifying a decision not to adopt a particular procedure by reference to a view as to the likely outcome.
49 Therefore, as to the requirements of procedural fairness, the relevant question is about the processes not the actual decision: SZBEL at [25] (Gleeson CJ, Kirby, Hayne, Callinan and Heydon JJ).
50 Materiality addresses a different aspect. It is concerned with the extent of the invalidating effect of a demonstrated failure to conform to the requirements of procedural fairness. It gives effect to a principle of construction that means that, unless there is some other indication in the statute, a breach of a statutory requirement (including the implied requirement to afford procedural fairness) does not invalidate an ultimate decision unless the breach was material in the sense that compliance could have led to a different outcome. Importantly, it involves a consideration of the decision that has been reached and any reasons provided for that decision.
51 The use in SZMTA of the language of 'realistic possibility' appears to allow for the inherent uncertainty in undertaking an inquiry as to what might have been the outcome if a different, fairer procedure had been followed. It is not the case that procedural fairness is invalidating unless the Court can conclude with certainty that the result would have been the same if the unfairness had not occurred. Rather, there must be a realistic possibility that it affected the result. That directs the inquiry to a consideration of what might have happened if the procedure had been different. The warnings stated in Stead and Aala remain to be heeded. At the point when materiality is being considered, the reasoning and result are the outcome of a flawed procedure. The question is whether, absent the flaw, a different result could have been reached. If that possibility is demonstrated then there is invalidity.
52 What appears to be a significant consequence of recognising that materiality must be demonstrated before there is invalidating error, is that it emphasises the need for an applicant to show that the outcome could have been affected. On an application for judicial review, the applicant has the onus of establishing on the balance of probabilities the facts which found the claim to relief: BVD17 at [38] (Kiefel CJ, Bell, Gageler, Keane, Nettle and Gordon JJ). If the applicant for review fails to clear the hurdle of demonstrating that the error was one whose absence might have resulted in a different outcome then the review application fails: BJK17 v Minister for Immigration, Citizenship, Migrant Services and Multicultural Affairs [2019] FCAFC 171 at [37]-[39] (Middleton, Bromberg and Snaden JJ).
53 The materiality inquiry is backward looking. It is concerned with whether there was a material invalidating failure to comply with a condition of the valid exercise of power in the particular case. I addressed these aspects in PQSM v Minister for Home Affairs [2019] FCA 1540 at [65]. However, it remains an inquiry as to whether compliance with the requirements of natural justice 'could realistically have resulted in the decision-maker making a different decision: i.e., whether the … applicant has been deprived of the realistic possibility of a successful outcome': Minister for Immigration and Border Protection v CPA16 [2019] FCAFC 40 at [33] (Yates, Murphy and Moshinsky JJ).
54 Further, as I noted in CHZ19 v Minister for Home Affairs (No 2) [2019] FCA 1112 at [34]-[37], in undertaking that inquiry it is not for the Court to usurp the statutory task entrusted to the Tribunal and form its own view as to what the result ought to have been, or indeed what the result could have been. There is jurisdictional error if there was a realistic prospect of success before the decision-maker, that is to say, if the decision made by the particular decision-maker could realistically have been different if the alleged procedural unfairness had not occurred.
55 As a result, even if the applicant demonstrates a failure to afford procedural fairness of the kind alleged, in order for the applicant to demonstrate invalidating jurisdictional error, the applicant must demonstrate on the facts and taking account of the Tribunal's reasoning that there is a realistic possibility that the Tribunal's decision could have been different if the breach of procedural fairness had not occurred.