Drawing upon the conservation of resources theory (Hobfoll,Am Psychol 44:513-524,1989),social exchange theory (Blau,Exchange and power in social life,1964) and the job demand-control model (Karasek,Adm Sci Q 24:285-308,1979),this study uncovers the theoretical mechanism that explains the relationship between work-family conflict and organizational citizenship behavior (OCB).First,this study focuses on how employee job satisfaction mediates the relationship.Then,we investigate the moderating role of decision authority in the mediated relationship.We employ three-wave data collected from 324 employees in 102 teams to test our hypotheses.Results of hierarchical linear modeling (HLM) first shows that job satisfaction mediates the relationship between work interference with family (WIF) and OCB.In addition,employees' decision authority moderates the direct effect of WlF on OCB.Specifically,the negative relationship between WIF and OCB is stronger when employees' decision authority is high.Moreover,decision authority moderates the indirect effect of WIF on OCB via job satisfaction.Specifically,the negative relationship between WIF and job satisfaction is weaker when employees' decision authority is high.The results suggest that organizations should give employees enough decision authority over their work,as a high level of decision authority may act as a double-edged sword regarding critical organizational outcomes.