| 2011/04 - present | Associate Professor, National Graduate Institute for Policy Studies |
| 2006/04 - 2011/03 | Associate Professor, Graduate School of Information Science and Engineering, Tokyo Institute of Technology |
| 2004/10 - 2006/03 | Assistant Professor, Institute of Social and Economic Research, Osaka University |
| 2004/06 - 2004/09 | 21st Century COE Researcher, Graduate School of Economics, Osaka University |
| 2010/10 – 2011/03 | Visiting Associate Professor, Institute of Economic Research, Kyoto University |
“Do Childbirth Allowances Matter for Fertility? Evidence from Japanese Health Insurance Data” (joint with Toshiaki Kouno, in Japanese) JCER Economic Journal (Nihon Keizai Kenkyu), Japan Center for Economic Research, 61, 94-108 (2009)
| 2009/04-present | National Institute of Population and Social Security Research, Project Member |
| 2006/04-2008/09 | National Institute of Population and Social Security Research, Project Member |
| 2009/04-2011/03 | Research Institute of Economy, Trade, & Industry, IAA, Project Member |
| 2006/04-2009/03 | Research Institute of Economy, Trade, & Industry, IAA, Project Member |