Tanaka & Takahashi Law Office (1985-1990)
Blakemore & Mitsuki (March 1991-September 2002)
Asahi Koma Law Offices (October 2002-December 2006)
TMI Associates (January 2007-October 2010)
Part-time Director, New Frontier Capital Management Co., Ltd. (January 2007-)
Part-time Representative Director, Anchor Ship Investment Co., Ltd. (February 2007-)
Part-time Representative Director, Anchor Ship Partners Co., Ltd. (September 2010-)
Maritime Counselor (September 2012-).
Observer, Integrated Resort Promotion Parliament Members' Association of the Democratic Party (December 2016-).