Teaching Fellow, School of Organization and Management, Yale University, 1976-80.
Assistant Professor of Management, Anderson Graduate School of Management, University of California, Los Angeles, 1980-86.
Assistant to Full Professor of Management, Department of Management, Texas A&M University, 1986-1994.
Professor of Management and Chase Chair for Excellence in Corporate Strategy, Department of Management and Human Resources, The Ohio State University, 1994-2012.
Presidential Professor of Strategic Management and Lassonde Chair of Social Entrepreneurship, Entrepreneurship and Strategy Department, David Eccles School of Business, The University of Utah, 2012-present.