This study develops and tests a full mediation model that examines the mediating role of job satisfaction in the Chinese context,based on a survey of 424 employees in three small and medium sized enterprises.Data analysis shows a good fit with the full mediation and all four classes of antecedents (i.e.,perceived organizational support,procedural,distributive,and interactional justice).Particularly,procedural justice contributes to the prediction of satisfaction.Job satisfaction is also shown to mediate most antecedentconsequence relationships,except the two between perceived organizational support (POS)-tover and procedural justice-consequences.Furthermore,there are only four direct links,including POS to citizenship behaviors directed at individuals,distributive justice to tover intention,interactional justice to citizenship behaviors directed at organizations and tover.These direct links suggest that job satisfaction does not fully mediate the relationships.