Holder of a PhD in Management from Panthéon-Sorbonne University, he is an expert management and change mangement related issues. He teaches on information systems, management control and change management at university and in various institutions of higher education (IAE Gustave Eiffel Université Paris Est Créteil, ESSEC, ENA).Through his work of research, he has produced numerous press articles (press and scientific reviews) and 24 books, including Tout Changer (2012), Petit traité de l'humour au travail (Eyrolles, 2011), Méthode de conduite du changement (Dunod 2010), Les grands concepts en conduite du changement (Dunod 2010) and Atlas du Management (2008, 2009, 2010 and 2012).