PhD. Johns Hopkins University, 1979 (Thesis supervisor, Sir Alan Walters, British Prime Minister Margaret Thatcher's Chief Economic Advisor)
Assistant Professor, State University of New York at Buffalo (1979-1981)
Associate Professor, GRIPS (1982-1990)
Professor, Faculty of Economics, Keio University (1991-2014)
Dean & CEO, Asian Development Bank Institute(ADBI) (2014-2020)
Visiting Professor, New South Wales University, Australia
visiting Professor, Science Po, Paris, France
Visiting Professor, Goteborg University, Sweden
Visiting Professor, Martin Luther University of Halle-Wittenberg, Germany
Visiting Professsor, University of Malaya, Kebansan, Malaysia
Visiting Scholar, MIT, USA
Visiting Scholar, Central Bank of Japan (Research Institute)
Visiting Professor, National Graduate Institute for Policy Studies (GRIPS, 2020-2023)
Visiting Lecturer, University of Tokyo, Graduate School of Public Policy, (2020-2022)
Green Finance Lifetime Achievement Award, 2021 (Central Award: European Green Finance Conference, Central Bank of Hungary, Planet Budapest Sustainable EXPO Summit, December 2021)
Republic of Palau (Member of Economic Advisory Group, 2022-present)
Professor Emeritus, Keio University (Economics) (2014-present)
Special Professor, Tokyo Metropolitan University (International Economics) (2023-Present)