Differentiated policy implementation in the European Union

This special issue analyses the patterns, causes and consequences of Differentiated Policy Implementation (DPI) in the European Union (EU). DPI is an umbrella term for the diversity in the presence and use of discretion during legal and practical policy implementation processes and outcomes in the EU. The emergent DPI research agenda emphasises differentiation in EU policy implementation beyond mere legal compliance, which is more widespread, and its role in the broader political and policy processes of EU multilevel governance. The contributions highlight anticipated implementation as one dimension of DPI, as well as legal and practical implementation. DPI serves as an alternative to differentiated integration (DI), accommodating heterogeneous national preferences, capacities and conditions, and feeding back into EU policy-making. The impact of DPI on the EU’s output legitimacy and effectiveness depends on scope conditions that require more scholarly attention.