5. Discussion
As predicted, workplace ostracism moderates the effects of ethical leadership on OCB, on organizational commitment, and the effects of organizational commitment on OCB. The results also revealed that organizational commitment mediates the relationship between ethical leadership and OCB.
5.1 Theoretical and practical implications
This research has some theoretical contribution to the relationship between ethical leadership and employee’s OCB. First, previous research works show that ethical leadership has a positive effect on OCB (Wang and Sung, 2016; Yang et al., 2016; Brown and Trevino, 2006; Frisch and Huppenbauer, 2014). Researchers explaining the mechanism that ethical leadership affects OCB mainly depend on social learning and social exchange theory. This research contributes to the relationship between ethical leadership and OCB using social identity theory, offering an additional perspective to understand the relationship. Otherwise, this research shows that ethical leadership can affect OCB through shaping one’s organizational commitment, which widens the outcome of ethical leadership and the antecedent of OCB.