- 2014/07 - 2018/07 International Sociological Association Research Committee on Sociology of Law President
- 2014/07 - 2018/07 国際法社会学会 会長
- 2012/12 - 2015 Law and Society Association Trustee
- 2012/12 - 2015 Law and Society Association Trustee
- 2000/07 - 2014/07 International Sociological Association Research Committee on Sociology of Law Board Member
- 2000/07 - 2014/07 国際法社会学会 理事
- 2011/05 - 2014 Japanese Association of Sociology of Law
- 2011/05 - 2014 日本法社会学会 学会奨励賞選考委員長
- 2012/12 - 2013 Law and Society Association Chair, International Committee
- 2012/12 - 2013 Law and Society Association Chair, International Committee
- 2010/05 - 2012/05 Law and Society Association Chair, International Research Collaborative Subcommittee
- 2010/05 - 2012/05 Law and Society Association Chair, International Research Collaborative Subcommittee
- 2008/05 - 2011/05 Japanese Association of Sociology of Law President
- 2008/05 - 2011/05 日本法社会学会 理事長
- 2008/08 - 2010 Law and Society Association Trustee
- 2008/08 - 2010 Law and Society Association Trustee
- 1992/08 - 2010 Japanese Association of Sociology of Law Board Member
- 1992/08 - 2010 日本法社会学会 理事
- 2005/05 - 2008 Japanese Association of Sociology of Law Chair, Committee for Berlin Conference
- 2005/05 - 2008 日本法社会学会 ベリルン大会準備委員会委員長
- 2007 - 2007 Law and Society Association Member of the Collaborative Research Network Advisory Board
- 2007 - 2007 Law and Society Association Member of the Collaborative Research Network Advisory Board
- 2002/02 - 2005 Japanese Association of Sociology of Law General Secretary
- 2002/02 - 2005 日本法社会学会 事務局長
- 1999/09 - 2002 Japanese Association of Sociology of Law Chair, International Committee
- 1999/09 - 2002 日本法社会学会 渉外委員長
- 1993/03 - 1996 Japanese Association of Sociology of Law Chair, Editorial Committee
- 1993/03 - 1996 日本法社会学会 編集委員長
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International Sociological Association Research Committee on Sociology of Law
, Japanese Association of Sociology of Law
, 日本刑法学会
, Law and Society Association