Professor, Department of Agricultural Economics, University of Nebraska-Lincoln (UNL), 2006-present.
Associate Professor, Department of Agricultural Economics, UNL, 2003-2006.
Assistant Professor, Department of Agricultural Economics, UNL, 1999-2003.
Lecturer, Department of Agricultural Economics, and
Research Scientist, Centre for the Study of the Co-operatives, University of Saskatchewan, Canada, 1998-1999.