Teaches at the CNSAD, Conservatoire National Supérieur d'Art Dramatique (National Conservatory of Dramatic Art), in Paris. He was its director (2007 - 2013).
Has supported Ségolène Royal's 2007 presidential campaign.
He supports François Hollande's 2012 presidential campaign.
Founder of theater troupe, he is the father of William Mesguich and Sarah Mesguich.