| 1976 | Joined the Ministry of Construction |
| 1979 | Entered Cornell Graduate School of Sociology |
| 1981 | Graduated from Cornell Graduate School of Sociology |
| 1983 | Seconded to the Prime Minister's Office |
| 1984 | Returned to the Ministry of Construction |
| 1988 | Joined the faculty of the Graduate School for Policy Studies, Saitama University as Associate Professor |
| 1997 | Joined GRIPS as Associate Professor |
| 1999 | Earned a Ph.D in engineering from the University of Tokyo |
| 2001 | Promoted to full Professor. Became a visiting scholar at the University of Minnesota and Carleton College |
| 2010 | Became a visiting scholar at Carleton College |