H.1. Legal principles
78 There is no free standing common law duty in Australia imposed on a decision maker to give reasons in making a statutory decision: Wingfoot Australia Partners Pty Ltd v Kocak (2013) 252 CLR 480; [2013] HCA 43 at [43] (French CJ, Crennan, Bell, Gageler and Keane JJ) citing Public Service Board (NSW) v Osmond (1986) 159 CLR 656; [1986] HCA 7. The standard required of a written statement of reasons is therefore to be determined as an exercise in statutory construction: Wingfoot at [44].
79 Their Honours stated in Wingfoot at [45]:
General observations, drawn from cases decided in other statutory contexts and from academic writing, about functions served by the provision of reasons for making administrative decisions are here of limited utility. To observe, for example, that the provision of reasons imposes intellectual discipline, engenders public confidence and contributes to a culture of justification, is to say little about the standard of reasons required of a particular decision-maker in a particular statutory context. The standard of reasons required even of courts making judicial decisions can vary markedly with the context.
80 Section 473EA(1)(b) of the Migration Act (read with s 25D of the Acts Interpretation Act 1901 (Cth)), requires the Authority to set out the reasons for its decision. It contains "materially identical" requirements to s 430 of the Migration Act: BVD17 v Minister for Immigration and Border Protection (2019) 268 CLR 29; [2019] HCA 34 at [16] (Kiefel CJ, Bell, Gageler, Keane, Nettle and Gordon JJ).
81 Section 430 of the Migration Act provides:
430 Tribunal's decision and written statement
Written statement of decision
(1) Where the Tribunal makes its decision on a review (other than an oral decision), the Tribunal must make a written statement that:
(a) sets out the decision of the Tribunal on the review; and
(b) sets out the reasons for the decision; and
(c) sets out the findings on any material questions of fact; and
(d) refers to the evidence or any other material on which the findings of fact were based; and
(e) in the case of a decision under paragraph 426A(1C)(b) or subsection 426A(1E) to confirm the dismissal of an application - indicates that under subsection 426A(1F), the decision under review is taken to be affirmed; and
(f) records the day and time the statement is made.
Note: Decisions on a review under paragraph 426(1A)(a) or (1C)(b), or under subsection 426(1E), must be made by a written statement under this section. They cannot be given orally. These decisions may be made following the failure of an applicant to appear before the Tribunal.
How and when written decisions are taken to be made
(2) A decision on a review (other than an oral decision) is taken to have been made:
(a) by the making of the written statement; and
(b) on the day, and at the time, the written statement is made.
Note: For oral decisions, see section 430D.
(2A) The Tribunal has no power to vary or revoke a decision to which subsection (2) applies after the day and time the written statement is made.
Return of documents etc.
(3) After the Tribunal makes the written statement, the Tribunal must:
(a) return to the Secretary, any document that the Secretary has provided in relation to the review; and
(b) give the Secretary, a copy of any other document that contains evidence or material on which the findings of fact were based.
Validity etc. not affected by procedural irregularities
(4) The validity of a decision on a review, and the operation of subsection (2A), are not affected by:
(a) a failure to record, under paragraph (1)(f), the day and time when the written statement was made; or
(b) a failure to comply with subsection (3).
82 The appropriate construction of s 430 of the Migration Act was considered in Minister for Immigration and Multicultural Affairs v Yusuf (2001) 206 CLR 323; [2001] HCA 13 (Gleeson CJ, Gaudron, McHugh, Gummow, Kirby, Hayne and Callinan JJ). In Yusuf at [69], the plurality said:
It is not necessary to read s 430 as implying an obligation to make findings in order for it to have sensible work to do. Understanding s 430 as obliging the Tribunal to set out what were its findings on the questions of fact it considered material gives the section important work to do in connection with judicial review of decisions of the Tribunal. It ensures that a person who is dissatisfied with the result at which the Tribunal has arrived can identify with certainty what reasons the Tribunal had for reaching its conclusion and what facts it considered material to that conclusion. Similarly, a court which is asked to review the decision is able to identify the Tribunal's reasons and the findings it made in reaching that conclusion. The provision entitles a court to infer that any matter not mentioned in the s 430 statement was not considered by the Tribunal to be material. This may reveal some basis for judicial review by the Federal Court under Pt 8 of the Act, or by this Court in proceedings brought under s 75(v) of the Constitution. For example, it may reveal that the Tribunal made some error of law of the kind mentioned in s 476(1)(e) of the Act, such as incorrectly applying the law to the facts found by the Tribunal. It may reveal jurisdictional error. The Tribunal's identification of what it considered to be the material questions of fact may demonstrate that it took into account some irrelevant consideration or did not take into account some relevant consideration.
(Footnotes omitted.)
83 The Full Court in LPDT stated at [62] that:
unexplained findings in a decision-maker's reasons will not usually avoid a finding of error where, on review, it is possible to posit a logical and legally available means by which the finding could have been reached.
84 Their Honours then stated at [63] that it was accordingly necessary to look to the reasons of the Tribunal to discern its course of reasoning. Their Honours then concluded at [64]:
The Tribunal's reasons do not expose any chain of reasoning at all, let alone a comprehensible one, between the features of the Appellant's evidence referred to and the conclusion that sub-paragraph (a) "militates strongly in favour of a finding that the [Appellant's] criminal offending has been of a very serious nature". As such, the Tribunal's reasons involved error. It was not incumbent on the Appellant to establish just how the Tribunal came to state the conclusion that it stated, and that that unstated method of reasoning involved error. Rather, the error lies in the very lack of any articulated comprehensible connection between the conclusion and the articulated basis for it.