From 1974 to 1980, Pigg was an Assistant and Associate Professor of Health Education at the University of Georgia. For one year (1980 to 1981) he was an Associate Professor of Health Education at Western Kentucky University before returning to his alma mater, Indiana University, as an Associate Professor of Health Education. Pigg would stay at Indiana University until 1987, two years after being promoted to the rank of Professor of Health Education.
