Fettering of discretion in Singapore administrative law
Fettering of discretion by a public authority is one of the grounds of judicial review in Singapore administrative law. It is regarded as a form of illegality. An applicant may challenge a decision by an authority on the basis that it has either rigidly adhered to a policy it has formulated, or has wrongfully delegated the exercise of its statutory powers to another body. If the High Court finds that a decision-maker has fettered its discretion, it may hold the decision to be ultra vires – beyond the decision-maker's powers – and grant the applicant a suitable remedy such as a quashing order to invalidate the decision. It is not wrong for a public authority to develop policies to guide its decision-making.