[63] The similarity between arts 34(2)(b)(ii) and 36(1)(b)(ii) [of the Model Law] with art V(2)(b) of the New York Convention is immediately striking.
[64] During the negotiation and discussion leading up to the Model Law, the concept of public policy under the New York Convention was well-known. While the subject of public policy in relation to the New York Convention is a large one, three things of relevance may be presently noted. First, the common law term "public policy" was recognised as broadly equivalent to the civilian notion of "ordre public", though the latter could perhaps be seen to have had or have a wider application, sufficiently wide to include principles of procedural justice. Second, the legislative history of art V(2)(b) of the New York Convention reveals that the phrase was understood to be directed to fundamental principles and was not to be given a broad interpretation that might pick up particular national domestic policy manifestations. Third, care needs to be exercised in the use of the expressions of "international" public policy and "domestic" public policy. Van den Berg states that the legislative history of art V(2)(b) points to "international public policy" being referred to. Yet, of course, the text of art V(2)(b) is "the public policy of that country". The point being made by van den Berg was that those words do not mandate particular domestic national public policy, rather they denote a concept recognising the international place of the Convention and the need for public policy to be restricted to the state's most basic, fundamental principles of morality and justice in order that there be the fullest commonality of international approach to the question. This usage of "international" public policy is to be distinguished from some truly international or transnational public policy comprising fundamental shared values or rules of natural law of universal application that is discussed by some authors. In this regard, the comments of Bokhary PJ and Sir Anthony Mason in Hebei Import & Export Corp v Polytek Engineering Co Ltd,[48] set out later, are particularly relevant.
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[74] ... We have already referred to the discussion of the negotiation of the New York Convention and the Model Law in van den Berg and Holtzmann and Neuhaus that assists one to the conclusion that the phrase was understood to be limited to the fundamental principles of justice and morality conformable with, and suited to operation within, the international nature of subject matter - international commercial arbitration, a context very different from the review of public power in administrative law.
[75] This approach to confining the scope of public policy has widespread international judicial support. Contrary to the submission of the appellant, it is not only appropriate, but essential, to pay due regard to the reasoned decisions of other countries where their laws are either based on, or take their content from, international conventions or instruments such as the New York Convention and the Model Law. It is of the first importance to attempt to create or maintain, as far as the language employed by Parliament in the [Act] permits, a degree of international harmony and concordance of approach to international commercial arbitration. This is especially so by reference to the reasoned judgments of common law countries in the region, such as Singapore, Hong Kong and New Zealand. Such is a reflection of the growing recognition of the harmony of what can be seen as the "law of international commerce". Such an approach accords with the objectives of the [Act] in s 2D and with the interpretive approach referred to in s 17 of the [Act]. It is also an approach required by art 2A of the Model Law, and by the highest authority when dealing with treaties. This approach should not be confined to treaties proper to which there are contracting state parties. Where, as with the Model Law, there has been extensive discussion and negotiation of a model law under the auspices of a United Nations body, such as UNCITRAL, and where the Model Law has been adopted by the General Assembly of the United Nations with recommendation of "due consideration" by member states to advance uniformity of approach, the same appropriate respect for, and, where necessary, sensitivity or deference to, reasoned decisions of other countries, should be shown. This is especially so in the field of international commerce. ...
[76] A review of the international jurisprudence leads to the conclusion that the interpretation of public policy in art V of the New York Convention and arts 34 and 36 of the Model Law is as it was understood at the time of the completion of the preparatory work: it is limited to the fundamental principles of justice and morality of the state, recognising the international dimension of the context.
[77] The authorities are not unanimous, though the weight of authority is clearly to give a narrow meaning to public policy in the manner to which we have referred.