The First Issue: The Amendment
14 The applicant advances two principal contentions in disputing the validity of the Amendment. The first is that the Amendment only amended the "authorisation" in the Authorisation and Determination. In so doing it created a new investigation for a different period which in turn had to be determined to be a new special investigation in accordance with the procedures and subject to the safeguards of the ACC Act. Implicit in this is that any amendment of an investigation changes its character from that which was previously approved and for that reason requires a new determination to be made if it is to be a special investigation. It is said that to give the ACC access to coercive powers for an additional year is a significant change in what had previously been adopted or approved.
15 Secondly, it is contended that the ACC does not have any express power to amend a special investigation and it cannot rely upon the provisions of the Acts Interpretation Act 1901 (Cth) s 33(3) or s 33(1) to remedy this deficiency. I will elaborate on this submission below.
16 It is the applicant's submission in short that the first determination is unalterable for all time. The only way the same subject matter could be inquired into for a further period is by constituting a completely new and separate special investigation.
17 The respondent's contention is multi-tiered. First, it is said the applicant has not proved that the Amendment was not made either in the manner required by s 7C of the Act or in the manner she contends is required. Secondly it is contended that the power to amend is confirmed by s 33(3) of the Acts Interpretation Act. Thirdly, alternatively, if the Amendment did not amend the Authorisation and Determination, it was a fresh authorisation and determination for the purposes of s 33(1) of the Acts Interpretation Act. Finally, an implied power to make the particular amendment in question is relied upon.
18 Before giving my own conclusion, I should refer at the outset to the provisions of s 33(1) and (3) of the Acts Interpretation Act. These provide:
"(1) Where an Act confers a power or imposes a duty, then, unless the contrary intention appears, the power may be exercised and the duty shall be performed from time to time as occasion requires.
…
(3) Where an Act confers a power to make, grant or issue any instrument (including rules, regulations or by-laws) the power shall, unless the contrary intention appears, be construed as including a power exercisable in the like manner and subject to the like conditions (if any) to repeal, rescind, revoke, amend, or vary any such instrument."
19 Turning to the applicant's contentions, there are two matters I would note at the outset. First, notwithstanding the variety of prescriptions in the Act governing the making of a determination that an investigation is to be a special investigation, the Act does not impose, or make provision for the imposition of, time limitations on the duration of such investigations. It is unsurprising, given the subject matter of such investigations, that the legislature did not seek so to circumscribe the ACC. For whatever reason - and this cannot on the material before me be a proper subject of inference - in this matter the Board chose to impose a time limit on the investigation. It would, in my view, be quite surprising if the consequence of its so doing was either to disable itself from extending the time in which to complete the special investigation it had authorised, or to require the ACC to make a report of the outcomes of the investigation by the set date even if the investigation was incomplete. Nonetheless, it is said I am driven to such conclusions.
20 The second matter I would note is that in making the Amendment, no less so than in making the original Authorisation and Determination, the ACC purported to act under s 7C. As the applicant has conceded, there is no evidence before me that the Amendment was not actually made in compliance with the requirements of the ACC Act. But the applicant goes on to contend that it was invalid because it did not on its face disclose that it complied with the requirements of the Act. Why it should disclose this has not been explained.
21 The Amendment was clearly intended to be read with the earlier Authorisation and Determination. Collectively, these documents refer to those matters which the Act requires to be included in a determination: see s 7C(4). Beyond this, though, there is a number of matters prescribed by the Act in, or consequent upon, the making of a determination on which these documents are silent: see e.g. s 7G(4) on the prescribed voting majority. There is, though, no statutory requirement that those matters be referred to in the s 7C determination. I can see no reason for the alleged invalidity arising from a failure to refer to them.
22 The appropriate principle to be applied to the Amendment is that "the validity of an administrative … decision and the legality of steps taken pursuant to it are presumed valid until the … decision is set aside in appropriate proceedings": Ousley v The Queen (1997) 192 CLR 69 at 130. The "appropriate proceedings" here are under the AD(JR) Act. It is well established that in such proceedings it is for the applicant to establish her case that the Amendment is invalid: Industrial Equity Ltd v Deputy Commissioner of Taxation (1990) 170 CLR 649 at 671-672. To the extent that the alleged invalidity required proof of the non-existence of asserted "jurisdictional facts" the applicant here has not discharged her burden: Eatts v Dawson (1990) 21 FCR 166 at 171. She has not sought to adduce evidence from which a non-compliance with the requirements of the Act could properly be inferred.
23 I turn now to the applicant's two contentions. The first - that the Amendment created only a new investigation but not a new special investigation - can be disposed of shortly. What was established by the Authorisation and Determination was an investigation having a particular character, i.e. that of a special investigation. What the Amendment purported to do was to extend the period for which that investigation was authorised. Assuming the Board had power to extend that investigation, the only amendment it needed to make was to extend the period specified in pars 4(a) and (b) of the Authorisation and Determination for which the special investigation was authorised. This is what it did.
24 The critical question is whether it had the power to extend that investigation. In my view it did. By virtue of s 33 of the Acts Interpretation Act that power was included within the Board's s 7C power to authorise an investigation which the Board determines to be a special investigation.
25 To reiterate the terms of s 33(3), it provides:
"Where an Act confers a power to make, grant or issue any instrument (including rules, regulations or by-laws) the power shall, unless the contrary intention appears, be construed as including a power exercisable in the like manner and subject to the like conditions (if any) to repeal, rescind, revoke, amend, or vary any such instrument."
26 The two controversies raised by this sub-section that have resurfaced in this proceeding are (i) What is an "instrument"? and (ii) Does the subsection apply only to instruments of a particular kind? Persuasive recent authority relieves me of the need to enter upon either of these issues in any detail.