- 2012/04/01 - 現在 Niigata University Graduate School of Modern Society and Culture Multicultural Studies Professor
- 2011/08/01 - 現在 Niigata University Graduate School of Education School Subjects Professor
- 2011/08/01 - 現在 Niigata University Faculty of Education Language, Culture and Communication Professor
- 2005/11/01 - 2011/07/31 Niigata University Faculty of Education Language, Culture and Communication Associate Professor
- 1998/10/01 - 2005/10/31 Niigata University Faculty of Education and Human Sciences Language, Culture and Communication Associate Professor (as old post name)
- 1994/04/01 - 1998/09/30 Niigata University Faculty of Law Associate Professor (as old post name)
- 1991/05/01 - 1994/03/31 Niigata University College of General Education Associate Professor (as old post name)
- 1985/04/01 - 1991/04/30 Niigata University College of General Education Lecturer
- 1982/10/01 - 1985/03/31 Toyo University
- 1980/04/01 - 1985/03/31 Tokai University
- 1977/04/01 - 1982/03/31 十文字女子中学・高等学校 非常勤講師
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