Ousting Ouster Clauses: the Ins and Outs of the Principles Regulating the Scope of Judicial Review in Singapore
Singapore Journal of Legal Studies [2020] 392–426 OUSTING OUSTER CLAUSES: THE INS AND OUTS OF THE PRINCIPLES REGULATING THE SCOPE OF JUDICIAL REVIEW IN SINGAPORE Thio Li-ann∗ How a court responds to an ouster clause or other attempts to curb its jurisdiction, which seeks to exclude or limit judicial review over a public law dispute, is a reflection of the judicial perception of its role within a specific constitutional order. Article 4 of the Singapore Constitution declares the supremacy of constitutional law over all other forms of law—whether statutory, common law or customary in origin. The courts have judicially declared various unwritten constitutional principles which are of particular relevance to the question of the scope of judicial review, particularly, the separation of powers and the rule of law. With comparative references where illuminating, this article examines the scope of judicial review in Singapore administrative law, in the face of legislative intent that it be partially truncated or wholly excluded, with a view to identifying and evaluating the factors that have been judicially considered relevant in ascertaining the legitimacy of an ouster clause, including the Article 93 judicial power clauses and the inter-play of other constitutional principles. I. Introduction: Legislative Intervention in the Realm of Judicial Review The law on ouster clauses, which shapes the scope of judicial review, may be seen as “a theatre of legislative-judicial engagement,”1 revealing how institutional actors view their role within a constitutional order, and the nature of administrative law within that polity. Courts have traditionally been hostile towards statutory attempts to exclude or restrict their supervisory jurisdiction, a facet of their general and inherent powers of adjudication, over jurisdictional excesses.
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