The Full Court's decision in Singh
85 In Singh, the Full Court identified the following principles as relating to legal unreasonableness:
(a) legal unreasonableness is invariably fact dependent, so that in any given case determining whether an exercise of power involves legal unreasonableness requires "careful evaluation of the evidence before the Court, including any inferences which may be drawn from that evidence" (at [42]);
(b) as is the case with the obligation to afford procedural fairness, there is an implication that the Parliament intends a power to be exercised reasonably, subject to any clear statutory qualification or contrary intention (at [43]);
(c) legal unreasonableness falls into two categories: it can be a conclusion reached by a supervising court after identifying an underlying jurisdictional error in the decision-making process or it can also be "outcome focused" without necessarily identifying another underlying jurisdictional error (at [44]);
(d) where a decision-maker has given reasons for its decision, the supervising court must look at those reasons to understand why the power was exercised as it was. It would be "a rare case where the reasons demonstrate a justification but the ultimate exercise of the power would be seen to be legally unreasonable" (at [47];
(e) the indicia of legal unreasonableness are to be found in the scope, subject and purpose of the relevant statutory provision. As the Full Court observed at [48]:
The standard of legal reasonableness will apply across a range of statutory powers, but the indicia of legal unreasonableness will need to be found in the scope, subject and purpose of the particular statutory provisions in issue in any given case. As we have said, unlike some other grounds for review of the exercise of power, the reasoning process in review for legal unreasonableness will inevitably be fact dependent. That is not to diminish the importance of the supervising court maintaining an approach which does not involve the substitution of its own judgment for that of the decision-maker. Rather, it is to recognise that any analysis which involves concepts such as "intelligible justification" must involve scrutiny of the factual circumstances in which the power comes to be exercised…;
(f) in the case of discretionary powers vested in a body such as the Tribunal, the location of those powers in the statutory scheme as aids to the performance of a review function is important, noting that the entire function of a review by that Tribunal under Pt 5 of the Act is to make the correct or preferable decision in respect of an individual applicant or application (at [49]);
(g) the interaction between a tribunal's obligations of procedural fairness in conducting a review and the standard of legal reasonableness can operate to control the manner in which such a tribunal may exercise a discretion reposed in it (at [50]); and
(h) s 360 requires the Tribunal to give an applicant a meaningful opportunity to appear and present evidence and argument, which involves a fact dependent exercise in each case to determine whether such an opportunity or real chance has been afforded (at [51]).
86 Although neither Li nor Singh dealt directly with the Tribunal's power under s 359(2) to invite a person to give information which the Tribunal considers relevant to its review, or the related duty which arises under s 359(1) to have regard to information which the Tribunal gets, the principles established in these decisions are relevant to the operation of those and other related provisions in the circumstances here.
87 Applying these principles, I consider that the FCCA erred in not concluding that the Tribunal acted unreasonably in the relevant legal sense in failing to ask Mr Le during the course of its interview of him questions relating to the matters set out in [33] above which were relevant to the review.
88 First, in requesting that Mr Le be available to give evidence by telephone, the Tribunal plainly considered that he might be able to give it information which was relevant to the review. The Tribunal was not obliged to obtain oral evidence from him but it chose to do so. Moreover, it chose to proceed with its request that he be available to give oral evidence on 14 January 2014 notwithstanding that, on that same day, it had received from him a further written statement of evidence.
89 Secondly, having determined to exercise its discretionary power under s 359(2) to invite Mr Le to give information orally and having complied with the requirements in s 359B(1) and (3), the Tribunal was obliged to conduct its interview of Mr Le reasonably in the sense explained in cases such as Li and Singh. The purpose of s 359 is to empower the Tribunal in its discretion to get information, either orally or in writing, which is relevant to the issues arising in the review. That purpose is not unlike the purpose of s 360 (see the comments in Li set out in [81] above). In a case where the Tribunal, in its discretion, determines to have a person give oral evidence at an interview it is plainly contemplated that this will occur before the Tribunal makes its decision. That is necessarily implicit in the obligation imposed by s 359(1) to have regard to relevant information which is obtained under that provision. And as is also the case with s 360(1), the opportunity for a person to give information in response to an invitation made under s 359(1) and (2) must be meaningful. The Tribunal has a discretion as to the questions which it will raise with a person whom it invites to give information at an interview, however, those questions must give effect to the requirement that the opportunity to give information is meaningful (see further below at [90]). As the Full Court stated in Singh at [51] what amounts to a "meaningful opportunity" to present evidence "will be fact dependent in each case". In my view, this observation is equally applicable to an interview conducted pursuant to ss 359(2) and 359B(3).
90 Thirdly, it is important to bear in mind that the Tribunal's decision to request that Mr Le be available to give evidence must have been a decision taken by it in the exercise of its discretion under s 359(1) and (2) of the Act and the discharge of its concomitant obligations under s 359B(1) and (3). It was plainly contemplated that further steps would be taken to implement that discretion, including asking questions of Mr Le at interview which were relevant to the issues arising in the review. I do not regard the principles established in Li and Singh relating to the presumption that statutory powers and duties must be exercised reasonably in a legal sense to be confined in the circumstances of this case to the Tribunal's initial decision to have Mr Le give evidence. If the requirement of reasonableness in the legal sense does not also extend to the Tribunal's subsequent questioning of Mr Le at interview, the opportunity afforded to him to give oral evidence could be nothing more than an empty gesture. Furthermore, the discretion conferred upon the Tribunal by s 359 must be viewed in the context of other provisions in Div 5 which confer powers on the Tribunal which are plainly intended to facilitate the Tribunal's core function of conducting a review. Those powers include the power to obtain oral evidence under oath or affirmation from a person whom the Tribunal decides to call as a witness.
91 Fourthly, the opportunity afforded to Mr Le by the Tribunal's request to give oral evidence had to be "real and meaningful and not just an empty gesture" (see Minister for Immigration & Multicultural & Indigenous Affairs v Maltsin [2005] FCAFC 118 (Maltsin) at [38] and the other authorities cited there). Although that epithet was used in Maltsin in relation to the giving of oral evidence by witnesses in respect of whom the review applicant has given a notice to the Tribunal under s 361(2), there is no reason why the same standard or requirement should not apply where, as here, the Tribunal of its own volition calls a witness under s 359(2).
92 Fifthly, in the circumstances of this case the Tribunal must have believed that Mr Le was capable of giving information which it considered to be relevant to the issues arising in relation to the decision under review, otherwise the Tribunal would have lacked power under s 359(2) to invite him to give oral evidence.
93 Sixthly, the Parliament plainly regarded any information which is obtained by the Tribunal pursuant to the exercise of its powers under s 359(1) and (2) to be significant because it imposed an express obligation on the Tribunal under s 359(1) to have regard to information which is relevant and which it obtains under either s 359(1) or (2).
94 Seventhly, it is also significant that the Parliament saw fit in s 366D to prohibit anyone other than the Tribunal from examining or cross-examining a person who appears before the Tribunal to give evidence. This serves to reinforce the Tribunal's inquisitorial role and its responsibility of ensuring that a witness whom it calls to give oral evidence is given a "real and meaningful" opportunity to give evidence on issues which the Tribunal considers to be relevant.
95 Eighthly, although as Hayne J observed in SAAP v Minister for Immigration and Multicultural and Indigenous Affairs [2005] HCA 24; (2005) 228 CLR 294 at [192], the review process of the Refugee Review Tribunal (RRT) under Pt 7 of the Act is "a predominantly documentary process" (and the same may be said in respect of the Tribunal's review process under Pt 5), it is evident from various provisions in Pt 5 that it is contemplated that the Tribunal may obtain both written or oral evidence from a witness, not limited to the review applicant. Moreover, the Tribunal's power to get such information or evidence orally is facilitated by its express powers to administer an oath or affirmation (s 363(1)(a) and (3)(c) and (d)); to summon a person who is in Australia to appear before it to give evidence (s 363(3)(a)); to take oral evidence by telephone or by other means (ss 359(2) and 366) and to appoint an interpreter for the purposes of communication between the Tribunal and a person giving evidence in an appropriate case (s 366C).
96 I respectfully agree with the following observations of Rangiah J in CZBH v Minister for Immigration and Border Protection [2014] FCA 1023 (CZBH) at [55]-[56] which, while directed at the RRT, are also apposite to the Tribunal when it conducts a review under Div 5 of Pt 5:
55. The Tribunal's core function pursuant to s 414(1) is to review decisions of the first respondent or his delegates that fall within s 411(1). Its process is inquisitorial. Its task is to make the correct or preferable decision on the materials before it: Li at [10] per French CJ. Section 426 and the ancillary provisions dealing with the taking of oral evidence recognise that in some cases the opportunity given to an applicant to present the evidence of witnesses in written form may not be enough. The purpose of those provisions must include assisting the Tribunal to arrive at the correct or preferable decision through the advantages that may be conferred by obtaining the oral evidence of witnesses.
56. One of the circumstances evidently contemplated by s 426 is where an applicant has been unable for some reason to obtain a written statement from a witness. Importantly, s 426 must also contemplate that obtaining oral evidence may assist the Tribunal to decide upon the credibility of a witness who has provided a written statement. In Butera v Director of Public Prosecutions (Vic) [1987] HCA 58; (1987) 164 CLR 180, Mason CJ and Brennan and Deane JJ held at 189:
A witness who gives evidence orally demonstrates, for good or ill, more about his or her credibility than a witness whose evidence is given in documentary form.
Although that statement was made in the context of considering a criminal trial conducted by a court, it is also true of oral evidence given before a Tribunal which is engaged in an inquisitorial process. In Chen v Minister for Immigration and Ethnic Affairs [1994] FCA 985; (1994) 48 FCR 591 at 599 and 602, the Full Court indicated that an oral hearing before the Minister's delegate may be required where issues of credibility arise. The Tribunal may find oral evidence given under oath or affirmation more persuasive than evidence given by written statement. If oral evidence is obtained by the Tribunal, it will also have the opportunity to test the credibility of the evidence given in any written statement by questioning a witness in the same way that it has the opportunity to test the evidence of an applicant.
97 Ninthly, the Tribunal did not explain why it considered that Mr Le might be able to give evidence which was relevant to the issues arising in the review, nor did it explain why it only asked the perfunctory questions which it did. Hence, this is a case where no explicit reasons have been given by the Tribunal which explain its impugned actions or conduct.
98 Of course, the Tribunal could not have reviewed Mr Le's statement dated 13 January 2014 when it indicated to the appellant's solicitor back on 19 December 2013 that it might wish to take evidence from Mr Le. It may reasonably be inferred, however, that the reason why the Tribunal wished to hear from him was because it considered that he might be able to respond to some or all of those credibility concerns, particular in respect of himself but also possibly in respect of the appellant. The Tribunal appreciated the existence of some of those credibility concerns because they were highlighted in the delegate's decision and findings as well as in other documents which were before the Tribunal, such as the Department's notes of its interview with Mr Le on 10 November 2011. That issues of credit were also in the Tribunal's mind during the course of the hearing is confirmed by the fact that the first substantive question asked of Mr Le in his telephone interview on 14 January 2014 was directed to the delegate's concern that "this was not a genuine spouse application". This suggests that the Tribunal considered that Mr Le could give relevant evidence on that issue at the very least.
99 It might also reasonably be assumed that, given these credibility concerns, the Tribunal considered (or, alternatively, should have considered) that justice and fairness required that Mr Le be given an opportunity to comment (see s 357A(3) of the Act and the potential for its exhortations to inform the operation of other provisions in Div 5 of Pt 5 of the Act, including s 359).
100 Finally, it is also relevant to note that although Mr Le himself was unable to seek a Tribunal review of the delegate's decision refusing him a partner visa, his wife, who is an Australian citizen, availed herself of the right to initiate such a review. In my view, another relevant feature of the circumstances of this case is that Mr Le was the visa applicant and not merely a disinterested witness. It was his application for a visa which set in train the events which ultimately resulted in his wife seeking a review of the delegate's decision. Mr Le's prominent role in the matter is also reflected in the fact that he was interviewed by the delegate as well as the Tribunal and that he provided two separate written statements in support of his visa application. The delegate's decision refusing him a partner visa plainly had an adverse affect on the rights and interests of both his wife and himself.
101 It goes without saying that the Tribunal would not be obliged to accept the responses given by Mr Le to the matters which ought to have been put to him in respect of its credibility concerns. But for the Tribunal to carry out its jurisdiction to conduct a review as contemplated by Div 5, in the particular circumstances of this case it was obliged to raise those matters with Mr Le for his comment.
102 That is not to deny that there may be cases where the Tribunal could justifiably come to the view that no point would be served by hearing the evidence of a particular witness, such as where the evidence of an applicant is so compromised that hearing oral evidence from a corroborating witness could not affect the outcome (see CZBH at [58]). But that is not the case here. The Tribunal did not explain why it did not squarely put to Mr Le its specific credibility concerns. The credibility of both the appellant and Mr Le were very live issues at the time of the Tribunal's hearing. Some of those issues of concern to the Tribunal were likely to be within Mr Le's knowledge and capacity to explain. Having determined to arrange for Mr Le to give oral evidence, justice and fairness obliged the Tribunal to provide him with a meaningful opportunity to address those issues of concern. This required the Tribunal to put those issues of concern to Mr Le for comment in terms which enabled him meaningfully to respond. The Tribunal failed to do so. The perfunctory questions asked of Mr Le were such that the credibility concerns of the Tribunal, which were later to be relied upon by it, among other matters, in dismissing the review application and as outlined in [33] above, were never fairly or squarely put to Mr Le for his response.
103 In the particular circumstances of this case, the Tribunal's actions constitute unreasonableness in the legal sense. By not providing Mr Le with a meaningful opportunity to address the particular issues of concern regarding credibility which the Tribunal had and which are outlined in [33] above, it constructively failed to exercise its jurisdiction to review the delegate's decision. That constitutes jurisdictional error. I emphasise that this conclusion reflects the particular facts of this case and, in my opinion, does not involve an impermissible review by the Court of the merits of the case.
104 I respectfully disagree with the observations of the primary judge to the effect that it is understandable that the Tribunal may not have felt the need to ask Mr Le anything "of great moment" because he had prepared two written statements (the second of which was for the specific purposes of the Tribunal's review) and because the Tribunal also had the benefit of the Department's notes of its interview with Mr Le. As noted above, it was the Tribunal itself who determined to request that Mr Le give evidence albeit that that decision was made prior to reviewing his second statement. And, having received and reviewed that statement, the Tribunal proceeded to take oral evidence from him in circumstances where it may be inferred that the Tribunal continued to entertain concerns about his credibility (and also that of his wife). Taking oral evidence from Mr Le provided the Tribunal with the opportunity to test the credibility of his previous evidence, as well as also providing him with an opportunity to respond to relevant matters which were of concern to the Tribunal regarding his wife's credibility and which were potentially within his knowledge or capacity to respond to.
105 For completeness, I should indicate that I also respectfully disagree with the primary judge's observation (set out at [39] above) that the Court should show deference "of a higher order" to that shown where the Tribunal decides not to call a witness nominated by a review applicant. I can see no sound basis for that approach. Such an approach gives insufficient attention to s 357A(3) as well as to the stipulated conditions which define the exercise of the Tribunal's power under s 359. In particular, as emphasised above, the Tribunal's discretion to get any information that it considers relevant in the conduct of the review, including inviting a person to give information orally, only exists in circumstances where the Tribunal considers the information it seeks to be relevant to that review. As has been emphasised above, the review which is conducted by the Tribunal must be a meaningful review and a lawful exercise of jurisdiction which is aimed at arriving at the correct or preferable decision.