Chairman Junior Hiring Committee 2006-2007

Chairman, Junior Hiring Committee 2005-2006

Co-organized the First Annual CARESS-Cowles Conference on General Equilibrium and Its Applications (2005), 2^nd (2006), 3^rd (2007), 4^th (2008), 5^th (2009), 6^th (2010), 7^th (2011), 8th (2012), 9th (2013), 10th (2014), 11th (2015), 12th (2016), 13th (2017)

Co-organized Conference in Honor of William Brainard, October 2001

Organized Cowles Foundation Conference on Incomplete Markets and Strategic Market Games, 2001

Organized Cowles Foundation Conference on Missing Financial Markets, 2001

Organizer, Conference on the Occasion of the 50^th Anniversary of the Death of Irving Fisher, 1998

Organized NBER Conference on General Equilibrium, 1997

Graduate Advisory Committee, 1997

Chairman, Senior Appointments Committees in Theory and Applied Theory, 1993-1994, 1994-1995

Junior Appointments Committee, 1985; Chairman, 1992-1993; 1994-1995

Director of Graduate Studies, 1987-1988

Director of Undergraduate Studies, 1984-1985

Comprehensive Examination Committee, 1982, 1984, 1985, 1989, 1992

Graduate Admissions Committee, 1981-1982, 1987-1988, 1988-1989

Library Committee, 1981-1982