Question of law 3: compliance with sections 43(2) and 43(2B)
66 None of the references to the evidence in the preceding paragraphs are to be found in the Tribunal's reasons, in a way which clearly links that evidence with its finding at [48]. It is true that the Tribunal referred in some detail to, and accepted, Dr Kernutt's report, and Dr Heffernan's reports. There is some inconsistency between various statements made by Dr Heffernan, but he was not called to give evidence at the Tribunal so any disconformities were not explored. Nevertheless, the Tribunal's reasons do not explain how the Tribunal came to rely on particular parts of what Dr Heffernan said, rather than other parts.
67 As I have observed at [50] above in relation to the first question of law, the Tribunal's reasons should be read as a whole to see how it understood and applied the phrase in cl 6(rr)(iv) and cl 9 of the 2007 SoP. Its fact finding concerning whether Mr Holden suffered from PTSD (including the evidence to which it refers in those parts) found an inference, which I am prepared to draw, that those parts of its reasons were expressed with the knowledge of the task it needed subsequently to perform, and the issues it needed subsequently to decide, under the SoP about ischaemic heart disease. As I have concluded at [54] above, its reasons do not disclose any erroneous approach to the construction of cl 6(rr)(iv) and cl 9 of the 2007 SoP.
68 To draw an inference in terms of the Tribunal's understanding of its task, and to find no error in its reasons in relation to the proper construction of cl 6(rr)(iv) and cl 9 of the 2007 SoP, is one thing. To address whether, given that inferential process is necessary, it can be said the Tribunal has complied with its obligations under s 43(2B) of the AAT Act, is another.
69 Two issues thus present for determination. First, what is the content of the obligations in ss 43(2) and 43(2B) of the AAT Act and has the Tribunal complied with them? Second, if there has been a failure to comply with those obligations, does such a failure constitute an error of law? Indeed, in terms of s 44 of the AAT Act and the nature of this Court's jurisdiction (on which see Rana v Repatriation Commission (2011) 126 ALD 1; [2011] FCAFC 124 at [11] per Kenny, Stone and Logan JJ; Birdseye v Australian Securities and Investments Commission (2003) 76 ALD 321; [2003] FCAFC 232 at [11]-[16] per Branson and Stone JJ; TNT Skypak International (Aust) Pty Ltd v Federal Commissioner of Taxation (1988) 82 ALR 175 at 178 per Gummow J), the correct expression of this issue is whether a question concerning failures to comply with ss 43(2) and 43(2B) is a question of law.
70 If those issues are answered favourably to the applicant's contentions, a further issue about appropriate relief arises. Since I am prepared to answer those first issues favourably to the applicant, I deal with the appropriate relief at [84] below.
71 In Dornan v Riordan (1990) 24 FCR 564 at 573, the Full Court held that where a statutory obligation to give reasons is a requirement for the exercise under the statute of a decision-making power, then a "substantial" failure to state reasons will constitute an error of law. In that case, a central issue on judicial review was how the Pharmaceutical Benefits Remuneration Tribunal had arrived at the "base rate" for the dispensing fee paid to pharmacists. The Tribunal determined there should be a reduction in the "base rate" from $4.55 to $3.50, but nowhere in its reasons did it explain how it arrived at that figure. In those circumstances, the Full Court held that the failure to give reasons, as its constituting statute required it to do, was a substantial one, because the reasons were not "adequate to enable the Court to determine whether or not any other error had occurred in the reasoning process" (at 575). This aspect was also emphasised, along with others, by the Full Court in Civil Aviation Safety Authority v Central Aviation Pty Ltd (2009) 179 FCR 554; [2009] FCAFC 137 (the CASA case).
72 I note at first instance in the CASA case a careful review and discussion by Perram J of the distinctions in the authorities between errors of law and questions of law, where inadequate reasons are concerned: see Civil Aviation Safety Authority v Central Aviation Pty Ltd (2009) 108 ALD 329; [2009] FCA 49. It is not necessary for me to enter that debate for the purposes of resolving this appeal. The Full Court in the CASA case made it clear that a failure to state reasons for a decision - at least where a statement of reasons is a requirement of the exercise of the decision-making process - constitutes an error of law: at [49]. The Court clearly had in mind legally inadequate reasons as included in the expression"failure".
73 The separate question whether a failure to comply with a statutory reasons obligation invalidates the exercise of power itself may depend on inferences to be drawn from the reasoning process exposed by the reasons of the decision-maker: see Repatriation Commission v O'Brien (1985) 155 CLR 422 at 445-446 per Brennan J. Even where reasons are legally adequate, the reasons in fact given by a decision-maker may also reveal a failure to take relevant considerations into account or a misunderstanding of the law to be applied, because those reasons reveal what the decision-maker considered to be material, and how the decision-maker approached her or his statutory task: see Minister for Immigration and Multicultural Affairs v Yusuf (2001) 206 CLR 323; [2001] HCA 30 at [38] per Gaudron J, at [69], [75] per McHugh, Gummow and Hayne JJ.
74 The distinction between inadequate reasons which do not have the additional feature of revealing other errors of law and those which do is illustrated by the reasoning in Re Minister for Immigration and Multicultural Affairs; Ex parte Palme (2003) 216 CLR 212; [2003] HCA 56 at [39]-[48] per Gleeson CJ, Gummow and Heydon JJ. Having identified the statutory reasons obligation in that case as a step "posterior" to the making of the visa decision, and having referred to the distinction in Melbourne Stevedoring 88 CLR 100, the majority said (at [44],[48]):
Here, the question is whether the step under s 501G which logically and temporally succeeds the making of a decision in exercise of a power is a condition precedent to that exercise. The possibility that this is so may be conceded. But, as Project Blue Sky emphasised, the answer depends upon the construction of the Act to determine whether it was a purpose of the Act that an act done or not done, in breach of the provision, should be invalid. This gives rise to several immediate difficulties for the prosecutor.
…
The visa cancellation decision may be reviewed in this Court for jurisdictional error. Such error may be found from what is disclosed by reasons provided under s 501G(1)(e). Failure to provide reasons may also be reviewed in this Court and compliance by the Minister with the statutory duty may be ordered. The reasons then provided may furnish grounds for prohibition under s 75(v) in respect of the visa cancellation decision. But what is not provided for is for a prosecutor, as in this case, to bypass that earlier step utilising mandamus, and to impeach the visa cancellation decision itself for want of discharge of the duty to provide reasons. There is, as was pointed out in argument, a critical distinction between failure to comply with s 501G(1)(e) and using that failure to conclude that the visa cancellation decision is flawed by jurisdictional error.
75 In an appeal under s 44 of the AAT Act, which does not depend on the concept of jurisdictional error, the distinction between reasons which are non-compliant with a statutory obligation and reasons which are non-compliant and also reveal other errors may be most relevant to the relief sought. Otherwise, so long as a question of law is raised in respect of the Tribunal's alleged non-compliance with ss 43(2) and 43(2B), this Court has jurisdiction to determine the matter and exercise the powers conferred on it by s 44 of the AAT Act if it finds such a failure to have occurred.
76 This is not a case of wholesale, or repeated, inadequacy of reasons. The Commission put its argument much more specifically than that, which is why its submissions focused on s 43(2B) rather than s 43(2).
77 So far as s 43(2B) is concerned, the obligation in s 43(2B) is twofold. The Tribunal must set out its findings on material questions of fact, and it must include "a reference" to the evidence or other material on which those findings are based. In a busy administrative tribunal such as the AAT, the content of the obligation in s 43(2B) must be approached with due appreciation of the circumstances in which the obligation must be discharged, including the obligations contained in s 33 of the AAT Act. As Bromberg J observed in Willis v Repatriation Commission (2012) 202 FCR 323; [2012] FCA 399 at [17]-[18], the s 43(2B) obligation must be applied with a view to the materiality and significance of particular findings on material questions of fact in each review. That is consistent with the approach in Dornan 24 FCR 564, that one of the central functions of a statutory obligation for a tribunal to give reasons is to facilitate appeals, here on questions of law only, or judicial review.
78 Where findings on material questions of fact are in issue, or are significant, it has been held that s 43(2B) requires the Tribunal to explain what evidence it has accepted or rejected in making those findings: TelePacific Pty Ltd v Commissioner of Taxation (2005) 218 ALR 85; [2005] FCA 158 at [50] per Sackville J, and the authorities there cited. The text of s 43(2B) requires the Tribunal to "refer" to the evidence or other material on which its material findings of fact were made, but this element is no more than an inclusive aspect of the general reasons obligation in s 43(2), rather than exhaustive of it. I accept that, at least on matters which are centrally in issue or significant, some level of explanation by the Tribunal in the manner suggested by Sackville J will usually be required for compliance with s 43(2B).
79 In my opinion, it cannot be doubted that whether the hypothesis raised by Mrs Holden was upheld by cl 6(rr)(iv) and cl 9 of the 2007 SoP was a significant issue in the Tribunal's review. It also cannot be doubted that whether, as a matter of fact, Mr Holden's death from ischaemic heart disease was related to his war service because he had a clinically significant anxiety spectrum disorder within the terms of cl 6(rr)(iv) and cl 9 of the 2007 SoP was an important issue in the Tribunal's review. Its reasons disclose an awareness that it needed to make findings on material facts in order to address those issues. At [48] of its reasons it made such a finding, but it did not explain why it had done so, nor did it include any reference to the evidence or other material on which its finding was based. This was only partial, and insufficient, compliance with s 43(2B).
80 The questions posed by cl 6(rr)(iv) and cl 9 of the 2007 SoP are different questions to those posed by the 2008 SoP on PTSD. They occur at a different stage of the process required by s 120(3) of the Act. They are the final stepping stones to a determination either in favour or against a claim by a veteran or a veteran's family. They concern the very causative relationship to which ss 120(1) and 120(3) of the Act are directed. Whilst one might speculate about how the Tribunal reached the conclusion it did, and point to evidence available to it, such observations are no substitute for the discharge by the Tribunal of its obligation under s 43(2) and more particularly under s 43(2B).
81 The Commission, on determination of the review by the Tribunal, was required to pay to Mrs Holden a pension in accordance with the Act. It is entitled to understand, by way of express explanation, why the Tribunal concluded Mrs Holden was entitled to that pension under the terms of cl 6(rr)(iv) and cl 9 of the 2007 SoP and what evidence or material it relied upon for that conclusion. The answer to that step in the statutory process was contested on the merits by the Commission before the Tribunal, and the Tribunal was required to record in more detail its explanation of the findings it made.