35 The High Court stated at [37] to [42]:
37 The right to bring an action for psychiatric injury is an ordinary legal right. It is not a fundamental right of our society or legal system similar to the right to have a fair trial or to have a criminal charge proved beyond a reasonable doubt. Nor is the presumption against interfering with ordinary common law rights of the same strength as the presumption that laws do not operate retrospectively. Whether or not the Law Reform (Miscellaneous Provisions) Act excludes the common law has to be determined by construing the legislation in its natural and ordinary meaning, having regard to its context and the purpose of the enactment. The context and purpose of a law includes the history of the enactment and the state of the law when it was enacted .
38 Section 4(1) says that liability in respect of a negligently inflicted injury shall "extend to include" liability for nervous shock. The words "extend to include" indicate that the New South Wales legislature sought to alter the common law in that State, as understood at the time, for the benefit of certain family members. The words of s 4(1), and in particular the words "extend to include", indicate that the section expanded the scope of the common law so far as family members were concerned, but otherwise maintained the existence of a common law action for nervous shock for those persons.
39 There is not a word in the Law Reform (Miscellaneous Provisions) Act that suggests that its purpose was to abolish generally the common law right to bring an action for damages for nervous shock. Nothing in the legislation itself or the Second Reading Speech indicates that the legislature intended that only those family members included in the definition in s 4(5) of the Law Reform (Miscellaneous Provisions) Act could bring an action for nervous shock. The fact that the legislature did not seek to exclude the common law is evident from a statement in the Second Reading Speech where the Minister said that s 4 would not affect the liability of newspaper publications who would continue to be governed by the common law. Against that background, it would be surprising if s 4 had the purpose - sub silentio - of abolishing the common law rights of the family members of an injured or deceased person and confining their rights to those conferred by the section. This is particularly so, given that the evident purpose of the legislation was to give family members rights of action denied to other persons who suffer nervous shock as the result of the careless conduct of wrongdoers.
40 Because the present issue has not previously arisen for determination, judicial utterances concerning the issue have been limited. But on two occasions, members of this Court have expressed the view that s 4 was an extension and not an abolition of the common law right to bring an action for nervous shock. In Scala v Mammolitti , Taylor J said that, although s 4 extended the field in which persons standing in a special relationship to a person killed, injured or put in peril might recover for nervous shock, "it otherwise leaves the earlier law untouched." In Mount Isa Mines Ltd v Pusey , Windeyer J said that New South Wales had modified the common law by enacting the Law Reform (Miscellaneous Provisions) Act and that the common law concerning nervous shock continued to develop.
41 Statements in the New South Wales Supreme Court are also consistent with the view that s 4 does not exclude the operation of the common law in New South Wales. In Anderson v Liddy , Jordan CJ referred to s4 as extending "in certain respects the common law liability of wrongdoers" in relation to nervous shock. His Honour referred to actions by family members brought under s 4 as "special cases". In Coates v Government Insurance Office of New South Wales , Kirby P held that s 4(1) does not exhaustively define the rights of persons to recover for nervous shock. His Honour said that, on its proper construction, the section provided a right for certain persons to bring proceedings for nervous shock in addition to common law rights that remained unaffected. Clark JA tentatively agreed with Kirby P on this issue. Similarly in FAI General Insurance Co Ltd v Lucre , Mason P, with whose judgment Meagher and Giles JJA agreed, said that the "section does not purport to restrict the continuing development of the common law of Australia".