Junior accountant Deloitte Haskins & Sells, Tokyo, 1959-1970, with exchange visitor program Los Angeles, 1970-1972, partner Tokyo, 1978-1988, managing senior partner, 1988-1990. Executive senior partner Deloitte Touche Tohmatsu, 1990-1997. Executive officer international Japanese Institute of Certified Public Accountants, 1997-2000.
Professor International University Japan, since 2000. Member accounting standard committee Japanese Institute of Certified Public Accountants, 1966-1978. Technical advisor The International Federation of Automatic Control, 1997-2000.
Lecturer in field.