- 1994 - 2010 Konan University Faculty of Letters
- 1994 - 2010 Konan University, Faculty of Letters, Professor
- 1993 - 1994 Doshisha University Institute for Language and Culture
- 1993 - 1994 Doshisha University, Institute for Language and Culture, Professor
- 1981 - 1993 Doshisha University Faculty of Commerce
- 1981 - 1993 Doshisha University, Dept. of Business, Professor
- 1974 - 1981 Doshisha University Faculty of Commerce
- 1974 - 1981 Doshisha University, Dept. of Business, Assistant Professor
- 1971 - 1974 Doshisha University Faculty of Commerce
- 1971 - 1974 Doshisha University, Dept. of Business, Lecturer
- 1964 - 1965 徳島県立美馬商工髙等学校 教諭
- 1964 - 1965 Mima Shoko High School, Teacher
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