Consideration
9 Barwick CJ formulated the dominant purpose test for legal professional privilege in Grant v Downs (1976) 135 CLR 674 at 677 that, subsequently, Gleeson CJ, Gaudron and Gummow JJ, and Callinan J, approved in Esso Australia Resources Ltd v Commissioner of Taxation (1999) 201 CLR 49. The Chief Justice stated the principle as follows (135 CLR at 677):
a document which was produced or brought into existence either with the dominant purpose of its author, or of the person or authority under whose direction, whether particular or general, it was produced or brought into existence, of using it or its contents in order to obtain legal advice or to conduct or aid in the conduct of litigation, at the time of its production in reasonable prospect, should be privileged and excluded from inspection.
10 Where a client consults a lawyer to seek legal advice about how to proceed or deal with a situation with which the client is faced, ordinarily the client will have more than one decision to make or consideration to take into account in respect of the subject-matter of the advice sought. There is a distinction between legal advice which a client seeks and then considers, on the one hand, and the decision or action that the client takes having had the benefit of the legal advice, on the other.
11 Stephen, Mason and Murphy JJ explained in Grant 135 CLR at 685 that there is a public policy purpose for the law's recognition of legal professional privilege, in a passage that Gibbs CJ cited and applied, with the agreement of Mason and Brennan JJ, in Attorney-General (NT) v Kearney (1985) 158 CLR 500 at 511, 517 as follows:
The rationale of this head of privilege, according to traditional doctrine, is that it promotes the public interest because it assists and enhances the administration of justice by facilitating the representation of clients by legal advisors, the law being a complex and complicated discipline. This it does by keeping secret their communications, thereby inducing the client to retain the solicitor and seek his advice, and encouraging the client to make a full and frank disclosure of the relevant circumstances to the solicitor. The existence of the privilege reflects, to the extent to which it is accorded, the paramountcy of the public interest over a more general public interest, that which requires that in the interests of a fair trial, litigation should be conducted on the footing that all relevant documentary evidence is available.
(emphasis added)
12 Gibbs CJ added:
The reasons justifying the privilege apply when a public authority preparing regulations which will have the force of law seeks legal advice from its legal advisers. It is in the interest of the public as well as that of the authority that the latter should make full and candid disclosure to its advisers so that it may obtain sound legal advice.
(emphasis added)
13 Gummow J said in applying the sole purpose test in Hartogen Energy Limited (in liq) v The Australian Gas Light Company (1992) 36 FCR 557 at 568-569, albeit the principle is equally applicable in relation to the dominant purpose test:
The purpose for which a document is brought into existence is a question of fact: Grant v Downs at 692 (Jacobs J); Waterford v Commonwealth (supra) at 66 (Mason, Wilson JJ), 78 (Brennan J). In Grant v Downs (at 692) Jacobs J said:
"[T]he question the court should pose to itself is this - does the purpose of supplying the material to the legal adviser account for the existence of the material? I use the purpose here in the sense of intention - the intended use."
The purpose will ordinarily be that of the maker of the document, but this will not always be the case. In Laurenson v Wellington City Corporation [1927] NZLR 510, Skerrett CJ looked to the person who "calls into existence documents in the bona fide belief that litigation will probably ensue …" [emphasis supplied]. And the phrase I have emphasised was employed by Stephen, Mason, Murphy JJ in Grant v Downs (at 682-683). It is apt to describe the situations where, for example, solicitors commission the provision of a technical report; the relevant intention will not be that of the author but the solicitor.
(emphasis added)
14 Similar considerations apply to any person, whether an individual or corporation, which seeks advice about a legal dilemma in which it finds that it is placed.
15 I reject the applicant's argument that relied on statements such as that of Boral's chief executive officer, Mike Kane, in his email to the chief financial officer of Boral America of 22 November 2019: "Only question is what is the final number? Don't we need to get to mid-December first or early January?" The answers to those questions depended upon the legal and other advice that Boral's executives would have to consider and make decisions on to arrive at "the final number".
16 The dominant purpose of Alston & Bird's work, including in the three investigation reports, was to give Boral legal advice that it could consider and take into account in making decisions that included what it would disclose to the market.
17 It is also implausible that Boral would wish to act on such a serious issue without as full a consideration of its legal position as was possible for Alston & Bird to provide in the circumstances at the time it was called upon to give its various advices. As Bromberg J said in Kirby v Centro Properties Ltd (No 2) (2012) 87 ACSR 229 at 254 [88]:
In seeking advice as to the correct classification of its debt there can be no doubt that Centro held the operational purpose of wanting to utilise that advice to correct its classification of debt if that was required. But the existence of that operational purpose does not diminish the dominant purpose of obtaining legal advice. Legal advice is rarely sought in a commercial context merely for the sake of receiving advice. It is almost always sought by a client for the purpose of applying the advice to a commercial or other operational purpose. The existence of a posterior operational purpose of that kind is of no moment where the client's purpose in engaging its lawyer is to seek legal advice and assistance.
(emphasis added)
18 Having read each of the three investigation reports and considered Mr Diffley's and Ms Joseph's evidence, I am satisfied that the dominant, indeed, the sole purpose of Mr Diffley and Ms Kingsley, the authors of each report, in providing it to Boral, was to provide Alston & Bird's legal advice to its client, Boral, and to aid it in the conduct of the existing Windows litigation in the United States. I am also satisfied that this was the dominant purpose of those in Boral who caused the three investigation reports to come into existence.