Barrister and Solicitor, Alberta and Saskatchewan; Law Professor, University of Saskatchewan, 1975-2010; Professor Emeritus, 2010-present; Acting Dean of Law, University of Saskatchewan, 1996-97, 2002-2004; Fulbright Fellow, Stanford University, 1995-96; Dean of Law, University of Saskatchewan, 1982-88; Law Professor, McGill University, 1972-75; Professor Emeritus; Officer of the Order of Canada 2013.