Morten Egeberg, Professor of Public Policy and Administration in the Department of Political Science and in the ARENA Centre for European Studies at the University of Oslo. His publications include Multilevel Union Administration: The Transformation of Executive Politics in Europe (Palgrave 2006) and Towards a New Executive Order in Europe? (edited with D. Curtin, Routledge 2009). His main areas of academic interest include the role of organizational factors in political systems - such as the relationship between organizational and institutional forms on the one hand and decision-making processes on the other hand - but also changes in organizational and institutional forms. The research focuses especially on the European Commission, EU agencies, national executives, and the relationship between the EU level and the national level. Jarle Trondal is Professor of Political Science and Management at the University of Agder and a Professor in the ARENA Centre for European Studies at the University of Oslo. His publications include An Emergent European Executive Order (OUP, 2010) and Governance in Turbulent Times (edited with K Ansell and M Øgård, OUP, 2016). His main academic interests include public administration and public governance, the EU as a political system, European integration and transformation, and the study of international public administration.