He is currently an FRQS Research Scholar at the Research Centre of the Institut universitaire de gériatrie de Montréal. In addition to conducting research, Dr. Grenier also held a private practice for 10 years, is a Research Professor in the Department of Psychology at Université de Montréal, and is the Director of the Laboratoire d'Étude sur l'Anxiété et la Dépression gÉRiatrique (LEADER).