International audienceThis paper focuses on the voluntary workers who take on responsibilities in French voluntary associations. First, drawing on a national association survey, we contrast the characteristics of leadership volunteers, especially chairpersons, with those of the French population as a whole. We show that leaders are very different from the overall population even if these differences seem to diminish for organisations created more recently. Secondly, from a national household survey, we compare Board members with other members of associations. Among other results, we find that the former are more rooted in their local environment and they participate more frequently in several associations. They are driven by more activist m...