111 It may well be that the use of the term "primarily child-related employment" in s 37 of the Commission for Children and Young People Act may have led to the insertion of the word "primarily" in s 3(a) of the Prohibited Employment Act, whether by accident or by design. But these matters of construction are not to be decided on the basis of mere conjecture. In re Bolton and anor; ex-parte Bean (1987) 162 CLR, 514 Mason CJ, Wilson and Dawson JJ dealt with the legislative history of a particular provision of the Defence (Visiting Forces) Act 1963. The question before the court was whether the warrant under which Mr Bean was arrested and detained was authorised by s 19 of the Visiting Forces Act. In canvassing the various arguments their Honours stated:
Ultimately, the answer is to be found in the proper construction of the provisions of the Act rather than by reference to the undisputed values securing the liberty of the individual that for centuries have illumined the common law. The respondents say no more and no less than that Mr Bean's apprehension and detention are strictly in accordance with the Act. They readily accept the abiding principles of the common law. The process of construction is in this case a difficult one and it is not surprising that reasonable minds may differ in the conclusions to which they come, as indeed has happened here. …
There are powerful arguments, as appears from the reasons for judgment of Toohey J, in support of the respondents' contention that on its proper construction s 19 of the Act authorises the arrest in Australia of a deserter or absentee without leave from the forces of a country to which the section applies notwithstanding that the desertion or absenting occurred outside Australia. There are textual matters that tend to distinguish part III of the Act from part II, thereby emphasising that section 19 is not intended to be confined to deserters or absentees from visiting forces while in Australia. Furthermore, given that section is ambiguous, consideration may be given in ascertaining the meaning of the provision to the second reading speech of the Minister when introducing the Bill for the Act into the House of Representatives in 1963; Acts Interpretation Act 1901 (Cth, as amended, section 15AB). That speech quite unambiguously asserts that part III relates to deserters and absentees whether or not they are not from a visiting force. But this of itself, while deserving serious consideration, cannot be determinative; it is available as an aid to interpretation. The words of a Minister must not be substituted for the text of the law. Particularly is this so when the intention stated by the Minister but unexpressed in the law, is restrictive of the liberty of the individual. It is always possible that through oversight or inadvertence the clear intention of the Parliament fails to be translated into the text of the law. However, unfortunate it may be when that happens, the task of the Court remains clear. The function of the Court is to give effect to the will of Parliament as expressed in the law. (at 517 - 518) .
112 In Cooper Brookes (Wollongong) Pty Ltd v The Commissioner of Taxation of the Commonwealth of Australia (1980-1981) 147 CLR 297, in the joint judgment of the Mason and Wilson JJ, consideration was given to the literal construction rule. Their Honours stated:
Generally speaking, mere inconvenience of result in itself is not a ground for departing from the natural and ordinary sense of the language read in its context. But there are cases in which inconvenience of result or improbability of result assists the court in concluding that an alternative construction which is reasonably open is to be preferred to the literal meaning because the alternative interpretation more closely conforms to the legislative intent discernible from other provisions in the Statute.
There is a similar problem with the related so called "golden rule" of construction. There are statements of the rule which would confine the courts to the ordinary grammatical sense of the words used unless that produces an absurdity or inconsistency. It is to be noted that Dixon J in Broken Hill South Limited v Commissioner of Taxation (NSW) (1937) 56 CLR 377 at 371, observed that departure from the ordinary grammatical sense is not legitimate unless there is 'some obscurity or some inconsistency', though it may be that 'obscurity' was intended to be a reference to 'absurdity'. For the reason already given in the discussion of the literal rule, departure from the ordinary grammatical sense cannot be restricted to cases of absurdity and inconsistency.
In some cases in the past these rules of construction have been applied too rigidly. The fundamental object of statutory construction in every case is to ascertain the legislative intention by reference to the language of the instrument viewed as a whole. But in performing that task, the courts look to the operation of the Statute according to its terms and legitimate aids to construction.
The rules, as D C Pearce says in Statutory Interpretation, p 14, are no more than rules of commonsense, designed to achieve this object. They are not rules of law. If the judge applies the literal rule it is because it gives emphasis to the fact which in the particular case he thinks is decisive. When he considers that the statute admits of no reasonable alternative construction, it is because (a) the language is intractable or (b) although the language is not intractable, the operation of the statute, read literally, is not such as to indicate that it could not have been intended by the legislature. On the other hand, when the Judge labels the operation of the statute as 'absurd', 'extraordinary', 'capricious', 'irrational' or 'obscure' he assigns a ground for concluding that the legislature could not have intended such an interpretation and that an alternative interpretation must be preferred. But the propriety of departing from the literal interpretation is not confined to situations described by these labels. It extends to any situation in which for good reason the operation of the statute on a literal reading does not conform to the legislative intent as ascertained from the provisions of the statute, including the policy which may be discerned from those provisions. (at 320 - 321).