| 2010 | Visiting Researcher, Asian Development Bank Institute |
| 2009 | Consultant, Asian Development Bank |
| 2009 | Visiting Senior Research Fellow, East Asian Institute, National University of Singapore |
| 2008-present | Professor of GRIPS |
| 2008 | Visiting Senior Research Fellow, East Asian Institute, National University of Singapore |
| 2007 | Director, Research Institute of International University of Japan |
| 2006 | Visiting Research Fellow, Bank of Finland |
| 2005 | Director of International Development Program, International University of Japan |
| 2005 | Professor of Economics, International University of Japan |
| 2004 | Sabbatical Fellow, World Institute for Development Economics Research, the United Nations University |
| 2002 | Associate Professor of Economics, International University of Japan |
| 2002 | Visiting Research Fellow, the Research Center, China Galaxy Securities Limited |
| 1998 | Visiting Assistant Professor, the Institute of Advanced Studies, the United Nations University |
| 1996 | Assistant Professor, International University of Japan. |