| Executive Office, Japan Fair Trade Commission (1975-1988) |
| Examiner, Coordination Division, Economic Department, Japan Fair Trade Commission (1988-1990) |
| First Deputy Commissioner, Collection Department, Kanto-Shin-Etsu Regional Taxation Bureau, National Tax Agency (1990-1991) |
| Deputy Commissioner (Revenue Management and Collection), Sapporo Regional Taxation Bureau, National Tax Agency (1991-1992) |
| Director, Investigation Division V, Investigation Department, Executive Office, Japan Fair Trade Commission (1992-1995) |
| Director, Investigation Division I, Investigation Department, Executive Office, Japan Fair Trade Commission (1995-1996) |
| Director, Special Investigation Division I, Special Investigation Department, Investigation Bureau, General Secretariat, Japan Fair Trade Commission (1996-1997) |
| Director, Personnel and Accounts Division, Secretariat, General Secretariat, Japan Fair Trade Commission (1997-1999) |
| Director, Personnel Division, Secretariat, General Secretariat, Japan Fair Trade Commission (1999-2001) |
| Director, General Affairs Division, Secretariat, General Secretariat, Japan Fair Trade Commission (2001-2003) |
| Director General, Trade Practices Department, Economic Affairs Bureau, General Secretariat, Japan Fair Trade Commission (2003-2004) |
| Director General, Special Investigation Department, Investigation Bureau, General Secretariat, Japan Fair Trade Commission (2004-2005) |
| Director General, Investigation Bureau, General Secretariat, Japan Fair Trade Commission (2005-2006) |
| Director General, Economic Affairs Bureau, General Secretariat, Japan Fair Trade Commission (2006-2008) |
| Secretary General, General Secretariat, Japan Fair Trade Commission (2008-2011) |
| Doshisha Law School (Professor, 2011-Present) |
| TMI Associates (Advisor, 2011-Present) |
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| (written in Japanese) |
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“Q&As on Antitrust Practice,” Seirin Shoin, 2007 (Co-author: pp. 97-154, Chapter 2. Private Monopoly) |
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“Understanding via Articles: the Antimonopoly Act,” Koubundou, 1997 (Co-author: pp. 413-422) |
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“Current Status and Problems of the Code of Conduct regarding UNCTAD Technology Transfer,” Japan Association of Economic Law Annual Report, No. 5, 1996 (pp. 72-92) |
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“An Essay on ‘Merger Control and Relevant Markets,’” Kosei Torihiki, No. 311, 1976 (pp. 25-31) |
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“Private Monopoly Cases of the Medical Food Sector,” First and Second Part, NBL, No. 597 (pp. 17-23), No. 599 (pp. 48-52), No. 601 (pp. 35-42) |
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“Global Contracts Dealing with Know-how Licenses and the Application of the Antimonopoly Act,” NBL, No. 582 (pp. 12-20) |
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“Execution of Rights including Patent Rights and the Antimonopoly Act,” NBL, No. 547 (pp. 22-29) |
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