Principles of construction
179 The trial judge was persuaded that it was necessary for him to examine in some detail the course of negotiations between the legal advisers in order to ascertain the commercial framework in which the contracts were made. An examination of such matters from the point of view only of the parties risks a descent into an assessment of what was, or was likely to be, the subjective intentions of the parties rather than an examination of what the words of the contract would convey to a reasonable person knowing the commercial framework within which the contract was made. The fact that, as in the present case, contractual rights and obligations are commonly assignable to third parties who were not involved in negotiations makes it imperative that the task of construction remains based on an objective view of the contractual stipulations. In the present case, there was every reason to think that the parties intended that the settlement, and their ongoing obligations towards each other, would be comprehensively stated in the documents which they executed to accomplish the settlement. That conclusion is suggested by both the circumstances of the settlement, and the terms of the documents by which it was given effect.
180 The approach which was taken by the parties in the present case appeared to me to be supported by an assumption that, in recent years, the High Court has softened the previously strict necessity for an objective examination of the terms of the contract and has given its endorsement to the idea that an examination of the "surrounding circumstances" in which a contract was made now justifies acting on conclusions about the subjective intentions or desires of one party or of all parties. In my view, there is no reason to conclude that that has occurred. In order to illustrate why that is so it is necessary to make reference to the authorities.
181 In Secured Income Real Estate (Australia) Ltd v St Martins Investments Pty Ltd (1979) 144 CLR 596 ("Secured Income") Mason J said (at 606):
The respondent also sought to rely on the oral testimony given by officers of the appellant and the respondent as to what was said and done during the course of negotiations leading up to the making of the contract, with a view to demonstrating that the parties had "commercial" leases in mind. This was said to be evidence of surrounding circumstances to which recourse could be had in interpreting the contract. In truth the evidence is not evidence of surrounding circumstances; it is evidence of the antecedent oral negotiations and expectations of the parties and as such it cannot be used for the purpose of construing the words of a written contract intended by the parties to comprehensively record the terms of the agreement which they have made. As Lord Wilberforce said in Prenn v Simmonds:
" ... evidence of negotiations, or of the parties' intentions ... ought not to be received, and evidence should be restricted to evidence of the factual background known to the parties at or before the date of the contract, including evidence of the 'genesis' and objectively the 'aim' of the transaction.
As to the circumstances, and the object of the parties, there is no controversy in the present case. The agreement itself, on its face, almost supplies enough, without the necessity to supplement it by outside evidence."
The comment by his Lordship in the last paragraph which I have quoted has equal application to the present case where the provisions of the contract itself so amply demonstrate that the purpose of the parties was to provide against the possibility that the respondent's investment return on the purchase price was less than the figure stipulated.
(Citation omitted, emphasis added)
182 In Codelfa Construction Pty Ltd v State Rail Authority of New South Wales (1982) 149 CLR 337 there appears in the judgment of Mason J the passage which has been regarded as the seminal statement of the appropriate principle. His Honour said (at p 352):
The true rule is that evidence of surrounding circumstances is admissible to assist in the interpretation of the contract if the language is ambiguous or susceptible of more than one meaning. But it is not admissible to contradict the language of the contract when it has a plain meaning. Generally speaking facts existing when the contract was made will not be receivable as part of the surrounding circumstances as an aid to construction, unless they were known to both parties, although, as we have seen, if the facts are notorious knowledge of them will be presumed.
It is here that a difficulty arises with respect to the evidence of prior negotiations. Obviously the prior negotiations will tend to establish objective background facts which were known to both parties and the subject matter of the contract. To the extent to which they have this tendency they are admissible. But in so far as they consist of statements and actions of the parties which are reflective of their actual intentions and expectations they are not receivable. The point is that such statements and actions reveal the terms of the contract which the parties intended or hoped to make. They are superseded by, and merged in, the contract itself. The object of the parol evidence rule is to exclude them, the prior oral agreement of the parties being inadmissible in aid of construction, though admissible in an action for rectification.
Consequently when the issue is which of two or more possible meanings is to be given to a contractual provision we look, not to the actual intentions, aspirations or expectations of the parties before or at the time of the contract, except in so far as they are expressed in the contract, but to the objective framework of facts within which the contract came into existence, and to the parties' presumed intention in this setting. We do not take into account the actual intentions of the parties and for the very good reason that an investigation of those matters would not only be time consuming but it would also be unrewarding as it would tend to give too much weight to these factors at the expense of the actual language of the written contract.
(Emphasis added)
183 Later cases have given more encouragement to consideration of surrounding circumstances than Mason J's observations suggest. Those later cases accept that surrounding circumstances may be taken into account to understand the meaning of contractual terms whether or not ambiguity is present (see the explanation in Masterton Homes Pty Ltd v Palm Assets Pty Ltd (2009) 261 ALR 382 per Allsop P at [1]-[3]).
184 In Royal Botanic Gardens and Domain Trust v South Sydney City Council (2002) 186 ALR 289 the High Court majority joint judgment said (at [10]):
10 In Codelfa, Mason J (with whose judgment Stephen J and Wilson J agreed) referred to authorities which indicated that, even in respect of agreements under seal, it is appropriate to have regard to more than internal linguistic considerations and to consider the circumstances with reference to which the words in question were used and, from those circumstances, to discern the objective which the parties had in view. In particular, an appreciation of the commercial purpose of a contract:
… presupposes knowledge of the genesis of the transaction, the background, the context, the market in which the parties are operating.
Such statements exemplify the point made by Brennan J in his judgment in Codelfa:
The meaning of a written contract may be illuminated by evidence of facts to which the writing refers, for the symbols of language convey meaning according to the circumstances in which they are used.
(Citations omitted, emphasis added)
185 The majority judgment then made an important observation (at [39]) about the possibility that the House of Lords had, in decisions made since Codelfa, taken a broader view of what might be relevant and admissible "background" to a contract:
39 Two further matters should be noticed. First, reference was made in argument to several decisions of the House of Lords, delivered since Codelfa but without reference to it. Particular reference was made to passages in the speeches of Lord Hoffmann in Investors Compensation Scheme Ltd v West Bromwich Building Society and of Lord Bingham of Cornhill and Lord Hoffmann in Bank of Credit and Commerce International SA v Ali, in which the principles of contractual construction are discussed. It is unnecessary to determine whether their Lordships there took a broader view of the admissible "background" than was taken in Codelfa or, if so, whether those views should be preferred to those of this Court. Until that determination is made by this Court, other Australian courts, if they discern any inconsistency with Codelfa, should continue to follow Codelfa.
186 Later High Court decisions have expressly accepted Lord Hoffman's statements in Investors Compensation Scheme Ltd v West Bromwich Building Society [1998] 1 WLR 896 ("West Bromwich Building Society") at 912 as correctly stating the relevant principles (Maggbury Pty Ltd v Hafele Australia Pty Ltd (2001) 210 CLR 181 at [11]; Pacific Carriers Ltd v BNP Paribas (2004) 218 CLR 451 ("Pacific Carriers") (at [22])). However, the necessity for an objective view of the terms of contracts has continued to be stressed by the High Court.
187 In Pacific Carriers the majority joint judgment said (at [22]):
22 … The case provides a good example of the reason why the meaning of commercial documents is determined objectively: it was only the documents that spoke to Pacific. The construction of the letters of indemnity is to be determined by what a reasonable person in the position of Pacific would have understood them to mean. That requires consideration, not only of the text of the documents, but also the surrounding circumstances known to Pacific and BNP, and the purpose and object of the transaction.
(Citations omitted)
188 In Toll (FGCT) Pty Ltd v Alphapharm Pty Ltd (2004) 219 CLR 165 ("Toll") the same five justices said (at [40]):
40 This Court, in Pacific Carriers Ltd v BNP Paribas, has recently reaffirmed the principle of objectivity by which the rights and liabilities of the parties to a contract are determined. It is not the subjective beliefs or understandings of the parties about their rights and liabilities that govern their contractual relations. What matters is what each party by words and conduct would have led a reasonable person in the position of the other party to believe. References to the common intention of the parties to a contract are to be understood as referring to what a reasonable person would understand by the language in which the parties have expressed their agreement. The meaning of the terms of a contractual document is to be determined by what a reasonable person would have understood them to mean. That, normally, requires consideration not only of the text, but also of the surrounding circumstances known to the parties, and the purpose and object of the transaction.
(Citations omitted)
189 The observations in Toll at [40] were applied in International Air Transport Association v Ansett Australia Holdings Ltd (2008) 234 CLR 151 at [53].
190 Examination of the meaning of a contract involves a search for an objective meaning arising primarily from the language used in the contract. The cases in which the meaning suggested by the language used in the contract will be subordinated to a presumed intent arising from surrounding circumstances remain the exception. Any other approach would be destructive of contractual certainty and thus of contractual effectiveness. Recently, in Chartbrook Ltd v Persimmon Homes Ltd [2009] 1 AC 1101, Lord Hoffman referred to his earlier remarks in West Bromwich Building Society pointing out (at [14]) that:
14 … in some cases the context and background drove a court to the conclusion that "something must have gone wrong with the language". In such a case, the law did not require a court to attribute to the parties an intention which a reasonable person would not have understood them to have had.
but continued (at [15]):
15 It clearly requires a strong case to persuade the court that something must have gone wrong with the language …
191 It does not remain accurate to suggest that evidence of surrounding circumstances is not admissible unless the terms of a contract are ambiguous or susceptible of more than one meaning even though no High Court decision has actually suggested that Mason J's formulation was, or has become, inadequate. However, I find it difficult to conceive a situation when Mason J's formulation would not be adequate to deal with every practical instance where reference to surrounding circumstances was necessary to understand the written terms of a contract (rather than imply terms into one). Whatever view may be taken about that issue, it remains true in my view that evidence of surrounding circumstances may not be used, as part of an exercise in construction of a contract, to contradict unambiguous contractual stipulations. Such evidence may have a part to play in an application for rectification of the terms of a contract, but that is an exercise of a different character, appealing to different, equitable, principles.
192 Furthermore, although the terms of the contract must, to the extent necessary, be viewed against the background of surrounding circumstances, and with the purpose and object of the transaction in mind, that does not mean that examination of the rights and obligations stated by the contract commences with the background rather than the terms of the contract (Ryledar Pty Ltd t/as Volume Plus v Euphoric Pty Ltd (2007) 69 NSWLR 603 at [106] - [109]). It is the words of the bargain, chosen by the parties to express their bargain, which are the lasting (and sometimes only) record of it. It is therefore the language of the contract to which primary regard must be paid. That is particularly important when, as here (and commonly), the benefits (and obligations) of the contract might be assigned to third parties who had no part in the negotiations, although they may be presumed to be familiar with the general commercial setting in which the contract operates.
193 Admonitions in the authorities to construe a contract without disregarding the surrounding circumstances do not amount to instructions to fit the terms of the contract into some independent view of such circumstances. Furthermore, an examination of surrounding circumstances must not be diverted into a surrogate examination of the subjective intention of the parties (Ermogenous v Greek Orthodox Community of SA Inc (2002) 209 CLR 95 at [25]; Toll at [38]). Equally, the level of commercial reality is a matter for the parties. Admonitions to avoid commercial unreality should not be read as an encouragement to courts to involve themselves in the quality of a bargain made between contracting parties. If a party (or both parties) inadvertently make a bad bargain which none intended that is a matter for rectification, not a forced construction.
194 In Toll the High Court emphasised (at [42]) "the significance which the law attaches to the signature (or execution) of a contractual document" (see also Equuscorp Pty Ltd v Glengallan Investments Pty Ltd (2004) 218 CLR 471 at [33] - [35]). Normally, it is to be presumed that parties have recorded their bargain in the document which they execute (Maybury v Atlantic Union Oil Co Ltd (1953) 89 CLR 507 at 517). As already indicated, there were good reasons in the present case to proceed upon the footing that the parties intended that their rights and obligations, both immediate and future, would be found in the terms of the documents they had executed.