Susumu Nishioka is Professor of Public Administration at the School of Law and Graduate School of Public Policy at Tohoku University, Japan. His research focuses on policy process, public administration, the welfare state, comparative political economy and public policy theory. He is particularly interested in historical institutionalism and discourse analysis. He has aslo analysed the policymaking process related to family policy change in the conservative Japanese welfare state. Recently, he has been focusing on the structural change of coordinated market economies, including Germany and Japan. He has also published some articles and book chapters that analyse the policymaking process regarding the corporate governance reform and competition policy in Japan.