“…Now, society needs more than ever for its seniors to stay active as long as possible: the expenses of healthcare and pensions as well as the high unemployment rate of juniors (24.2% in 2014) and seniors (7.5 % in 2014, Eurostat, 2015b) cost too much for France. The system faces new challenges, combining an economic perspective and a social and societal point of view: a fear of a shortage of qualified and experienced workers, of a loss of knowledge acquired from experience, and realising the great importance of maintaining the social link between generations and supporting the social balance (Cahuc, 2005;Guillemard, 2007;Juban, 2013;Loisel, 2002;Meier, 2008).…”