The invalidity point
19 As to the first point - the alleged invalidity of s 26(2) of the PID Act, Ms Clement relied on ss 15A and 15AA of the Acts Interpretation Act 1901 (Cth).
20 Section 15AA provides:
15AA Interpretation best achieving Act's purpose or object
In interpreting a provision of an Act, the interpretation that would best achieve the purpose or object of the Act (whether or not that purpose or object is expressly stated in the Act) is to be preferred to each other interpretation.
21 The objects of the PID Act are set out in s 6. They are:
(a) to promote the integrity and accountability of the Commonwealth public sector; and
(b) to encourage and facilitate the making of public interest disclosures by public officials; and
(c) to ensure that public officials who make public interest disclosures are supported and are protected from adverse consequences relating to the disclosures; and
(d) to ensure that disclosures by public officials are properly investigated and dealt with.
22 Ms Clement submitted that, if s 26(2) were valid, it would defeat the objects of the Act,
in removing protections from a group who have endured adverse consequences due to their having made public interest disclosures, in favour of provision of an immunity from liability for disclosable conduct, provide sanction for the past, present and future commissions of offences against persons who made public interest disclosures, enable evasion of accountability for the disclosable conduct that led to those disclosures, undermine the integrity of the Commonwealth public sector, discourage the making of public interest disclosures by public officials, ensure that significant public interest disclosures by public officials are not properly investigated, and would protect third parties that aid, abet, counsel or procure both disclosable conduct from Commonwealth public sector entities and reprisals against public interest disclosers.
23 The submission is misconceived.
24 First, s 15AA of the Acts Interpretation Act is only applicable where the provision in question admits of more than one interpretation. Section 26(2) of the PID Act does not.
25 Secondly, the objects of the Act are not defeated if s 26(2) is valid. Whether one provision of an Act conflicts with another provision of the same Act is a matter of statutory construction: Taniela v Minister for Immigration and Border Protection [2014] FCA 375 at [35] (Perry J) (appeal dismissed: Taniela v Minister for Immigration and Border Protection [2014] FCAFC 104). The meaning of s 6, like any statutory provision, must be determined "by reference to the language of the instrument viewed as a whole": Cooper Brookes (Wollongong) Pty Ltd v Federal Commissioner of Taxation (1981) 147 CLR 297 at 320 (Mason and Wilson JJ). See, too, Project Blue Sky Inc v Australian Broadcasting Authority (1998) 194 CLR 355 at [69] (McHugh, Gummow, Kirby and Hayne JJ). In Project Blue Sky their Honours went on to say at [70]:
Where conflict appears to arise from the language of particular provisions, the conflict must be alleviated, so far as possible, by adjusting the meaning of the competing provisions to achieve that result which will best give effect to the purpose and language of those provisions while maintaining the unity of all the statutory provisions.
26 The reference to public interest disclosures in s 6 is to public interest disclosures as defined in the Act. By s 26(2) public interest disclosures made before 14 January 2014 are excluded from the definition in s 26(1). In other words, the Act and its objects are only concerned with public interest disclosures made on and from that date.
27 Thirdly, even if there were some incongruence between s 26(2) and the objects of the PID Act as they are expressed in s 6, that would not mean that s 26(2) was in excess of the Commonwealth's legislative power or was for any other reason invalid. That is not the effect of s 15AA. Nor is it the effect of s 15A, which provides:
15A Construction of Acts to be subject to Constitution
Every Act shall be read and construed subject to the Constitution, and so as not to exceed the legislative power of the Commonwealth, to the intent that where any enactment thereof would, but for this section, have been construed as being in excess of that power, it shall nevertheless be a valid enactment to the extent to which it is not in excess of that power.
28 The effect of s 15A is not to render Commonwealth legislation invalid. It is to require that legislation be interpreted, where possible, in a manner that preserves its validity: see Victoria v Commonwealth (Industrial Relations Act Case) (1996) 187 CLR 416 at 501-02. It therefore makes no sense to say, as Ms Clement did, that:
interpretation of s 26(2) of the PID Act as being invalid, is the interpretation that complies with section 15A of the Acts Interpretation Act 1901 (Cth) and which meets the objects of the PID Act, as required by section 15AA of the Acts Interpretation Act 1901 (Cth).
29 The invalidity point is entirely without merit.
30 Ms Clement also referred to s 12 of the Acts Interpretation Act, which provides that every section of an Act shall have effect as a substantive enactment without introductory words. But no submissions were directed to it and its relevance is elusive.