The Role of Parliament in Delegated Legislation: Principles for Safeguarding Legislative Transparency and Democratic Accountability

The classical doctrine of the separation of powers vests legislative functions exclusively in parliament. However, modern legal systems also necessitate the delegation of legislative powers to the executive. This is a practical response to the growing complexity of governance, where efficiency, flexibility, technical expertise and extensive regulation are increasingly important. Delegated legislation is thus a practical necessity but a failure to properly manage such delegation poses a serious threat to democratic governance. Excessive reliance on executive rulemaking can erode transparency, create legal uncertainty, weaken democratic accountability and ultimately diminish public trust in government policies and laws that fail to meet citizens’ needs. This dynamic makes the oversight of delegated powers a critical task for parliaments worldwide, as they are constitutionally bound to safeguard the integrity of the legislative function and protect the public interest. Given that the scope and limits of delegation differ among parliamentary and presidential systems, federal and unitary states, and civil and common law traditions, there is no universal blueprint. However, there are fundamental distinctions between systems where delegated legislation is constitutionally regulated and those where it relies on parliamentary discretion. In the former, constitutional rules constrain the delegation process, imposing procedural and substantive limits. In the latter, while legislative sovereignty allows broader discretion in delegating powers, institutional and judicial controls are often used to monitor the executive rulemaking. Despite diverse practices, certain common principles can guide parliaments in improving the frameworks and procedures that regulate both the granting of delegated powers and the scrutiny and oversight of delegated acts. The present brief provides a comparative outlook on how seven different parliamentary systems (France, Germany, India, Italy, Nepal, Spain and the United Kingdom) manage delegated legislation. By analysing the distinct constitutional and institutional approaches shaped by each nation’s legal traditions, forms of government and administrative needs, the brief sets out seven guiding principles for parliaments to consider when addressing shortcomings in the regulation of delegated legislation—from initial authorization to the subsequent scrutiny of executive action. This brief is designed as a practical resource for parliaments, offering comparative insights and guiding principles for strengthening their capacity to manage delegation effectively, ensuring that this essential feature of lawmaking complements rather than undermines parliament’s constitutional role.