Abstract：Humor refers to any amusing communication which produces positive emotion and cognition in an individual, group or organization. A successful organizational humor could not only reduce a staff’s working pressure as well as ease the interpersonal conflicts, but also improve the organizational performance. In this research, we reviewed the latest research evidence, concepts and theories of humor in the workplace. We also described the influence of humor on organizations from the relationships between organizational humor and occupational health, the prediction mechanism of job performance and the humorous style of leaders. Finally, we concluded with an agenda for future research on humor in the workplace.