- 2012/04 - 現在 Professor; Faculty of Intercultural Communication and Graduate School of Intercultural Communication, Hosei University
- 2012/04/01 - Professor; Faculty of Intercultural Communication and Graduate School of Intercultural Communication, Hosei University
- 2009/04 - 2012/03 Director, Centre for International Programmes, Jissen Women's University and Jissen Women's Junior College
- 2001/04 - 2012/03 Professor, Graduate School of Humanities, Graduate School of Jissen Womens' University
- 1994/04 - 2012/03 Professor, Department of English, Jissen Women's University
- 1994/04 - 2004/03 Full-time associate professor; Department of English, Jissen Women's University
- 1991/04 - 1999/03 Part-time lecturer, Department of English Literature, Chuo University
- 1992/04 - 1996/03 Part-time lecturer, Tokyo University of Foreign Studies
- 1993/04 - 1994/03 Full-time associate professor; Department of International Studies, Yamanashi Women's Junior College
- 1990/04 - 1993/03 Full-time lecturer; Department of International Studies, Yamanashi Women's Junior College
- 1992/04 - 1992/09 Part-time lecturer; Faculty of Education, University of Yamanashi
- 1989/04 - 1991/03 Part-time lecturer, Tokyo Art University
- 1989/04 - 1991/03 Part-time lecturer, Tsuru University
- 1989/04 - 1990/03 Part-time lecturer, Yamanashi Gakuin University
- 1989/04 - 1990/03 Part-time lecturer, Saitama University
- 1989/04 - 1990/03 Part-time lecturer, Tokyo Science University