3.2 How is the question of the merit of any appeal to be approached in the circumstances of the present case?
15 A central issue on the application concerned how merit was to be assessed in the context of an application for an extension of time being heard by a single judge where, in order to succeed on any appeal, both parties agreed that it would be necessary for the applicant to establish that the decision in Lesi was plainly wrong unless the appeal were referred to a Full Court. As for example French J (as his Honour then was) held in Hicks v Minister for Immigration and Multicultural and Indigenous Affairs [2003] FCA 757 (Hicks) with respect to the judicial comity to be extended by a single judge to the decision of another judge:
75. It is well established that a judge of this Court should follow an earlier decision of another judge unless of the view that it is plainly wrong - Takapana Investments Pty Ltd v Teco Information Systems Co Ltd (1998) 82 FCR 25 at 33 (Goldberg J), citing Towney v Minister for Land and Water Conservation for New South Wales (1997) 147 ALR 402 at 412 and Esso Australia Resources Ltd v Commissioner of Taxation (Cth) (1997) 150 ALR 117 at 121. See also La Macchia v Minister for Primary Industries and Energy (1992) 110 ALR 201 at 204 where Burchett J said:
"The doctrine of stare decisis does not, of course, compel the conclusion that a judge must always follow a decision of another judge of the same court. Even a decision of a single justice of the High Court exercising original jurisdiction, while "deserving of the closest and respectful consideration", does not make that demand upon a judge of this court: Businessworld Computers Pty Ltd v Australian Telecommunications Commission (1988) 82 ALR 499 at 504. But the practice in England, and I think also in Australia, is that "a judge of first instance will as a matter of judicial comity usually follow the decision of another judge of first instance [scil of coordinate jurisdiction] unless he is convinced that the judgment was wrong": Halsbury, 4th ed, vol 26, para 580. The word "usually" indicates that the approach required is a flexible one, and the authorities illustrate that its application may be influenced, either towards or away from an acceptance of the earlier decision, by circumstances so various as to be difficult to comprehend within a single concise formulation of principle…"
16 As French J then observed, the importance of the "injunction to judicial comity" does not merely lie in "mutual politeness as between judges of the same or co-ordinate jurisdictions." Rather, his Honour continued:
76. … It tends also to uphold the authority of the courts and confidence in the law by the value it places upon consistency in judicial decision-making and mutual respect between judges. And where questions of law, and statutory construction, are concerned the proposition that a judge who has taken one view of the law or a statute is 'clearly wrong' is one not lightly to be advanced having regard to the choices that so often confront the courts particularly in the area of statutory construction
17 The Minister argued that it was necessary for the applicant to establish that the decision in Lesi was plainly wrong in line with the doctrine of judicial comity for the following reasons, notwithstanding that this was an application for an extension of time and therefore a "gateway" only to an appeal. First, the Minister submitted that, absent a referral to a Full Court, any appeal under s 44 of the AAT Act would be heard by a single judge of the Court. Thus while a single judge could recommend that the appeal be referred to a Full Court, the decision ultimately lay with the Chief Justice who may or may not accept the recommendation. Secondly, the Minister submitted that a single judge would be bound to dismiss the appeal unless persuaded that the decision was plainly wrong as a matter of judicial comity. Thirdly, given that the applicant conceded that the decision in Lesi was not plainly wrong, the Minister submitted that it followed that any appeal which, in the ordinary course would be heard by a single judge, has no prospects of success and the application for an extension of time should therefore be refused.
18 The first and second steps in the Minister's submission are plainly correct. However, in my view, the argument falls at the third step. The error in the last step is that it approaches the issue of an extension of time solely through the prism of a first instance decision, as opposed to a consideration of the substantive merits of the issue sought to be litigated. In this regard, even if the matter were not referred in the first instance to a Full Court, there would be a right to appeal to a Full Court which could overrule Lesi if persuaded simply that it was wrong. That being so, the rationale for dismissing an extension of time application because it lacks merit does not apply to a case where there is a serious doubt as to the correctness of a decision applied by the AAT. This is because it cannot be said that it would be pointless in such a case to grant the extension of time, and that the parties and the Court's resources would be diverted to the hearing and determination of an appeal for no good purpose: see Jamal at [12].
19 The applicant argued instead that the correct test was whether, on a rough and ready assessment, there is a serious doubt as to correctness of the construction of the relevant provisions adopted in Lesi. In my view, that submission must be accepted. While neither party could identify any authority directly on point, posing the test in this manner accords proper respect to the first instance decision of another judge of this Court, while ensuring that where there is a serious doubt about the correctness of that decision, it can be litigated and ultimately determined by a Full Court either on referral, if appropriate, or in due course on appeal. By analogy, as French J in Hicks at [76] observed in obiter, given the importance of the considerations underlying the requirements of judicial comity, "where a serious doubt arises on the part of one judge, about the correctness of the law as stated by another, in a matter of importance, it may be desirable for a case to be stated to the Full Court for early resolution of the question in contention."
20 By contrast if the Minister's approach were adopted, the decision of a single judge refusing the extension of time would be interlocutory. As such, it could be appealed to a Full Court only if leave were granted under s 24(1A) of Federal Court of Australia Act 1976 (Cth) (FCA Act), unless the application for the extension of time itself were referred to a Full Court under s 20(3) of the FCA Act. As the applicant submitted, while clearly a single judge might recommend that an application for an extension of time be determined by a Full Court and the Chief Justice may accept the recommendation and make directions accordingly:
This emphasis [in the FCA Act] on the single judge avoids inconvenience and delay. A single judge should, absent some special reason, determine preliminary or procedural matters such as the extension. The Full Court should not be convened where no substantive proceeding may result or where multiple hearings may be needed …
(Applicant's Supplementary Submissions at [15])
21 By analogy Charlesworth J explained in Kassiou v Heard (Liquidator) [2017] FCA 425 (Kassiou) in the context of dismissing an application for a direction that an application for leave to appeal be listed before a Full Court, as opposed to a single judge which is the default position under s 25 of the FCA Act:
12. It may be accepted that the degree of complexity or difficulty attending a question will be a relevant consideration in the exercise of the discretion to refer the question to the Full Court under s 25(6). But the mere existence of some difficulty is in my view insufficient. The policy underlying the status quo in s 25(2) ought be given considerable weight in determining whether the preliminary question of the kind arising in this matter ought to be heard and determined by a Full Court rather than a single judge. The referral of all questions of law involving some degree of difficulty to a Full Court would, to my mind, be an inefficient use of the overall resources of the Court and would undermine the overarching purpose of the Court's practice and procedure provisions: FCA Act, s 37M.