Despite their social aims, most social enterprises work in an economic environment. Therefore, they have an objective of performance that gives the strategy of human resources management a crucial role. The organisational citizenship behaviours (OCBs) of their workforce represent a competitive advantage for this kind of organisation. These behaviours improve the quality and increase the quantity of the workers' effort. One of the most important antecedents of OCB is the perception of organisational justice. This article is precisely aimed at studying the link between organisational justice and OCBs in social enterprises. Data were collected from 101 permanent workers of 27 French work integration social enterprises. The results show that only interactional justice can foster OCB. Unlike private sector companies, the distributive and procedural dimensions of organisational justice are not linked to OCB.