Abstract
This study employs social learning theory to explore the spillover effects of abusive supervision, particularly how it influences mistreatment by peers towards victims. It posits that third-party employees learn mistreatment behaviors from abusive leaders and subsequently engage in peer ostracism, which in turn exacerbates the victims' knowledge-hiding behavior. To validate the hypotheses, data were collected at three intervals over one month to mitigate common method bias. The analysis included 635 valid responses and utilized regression analysis. Findings indicate a positive relationship between abusive supervision and peer ostracism, which in turn correlates with increased knowledge hiding among employees. Additionally, the frequency of interactions moderates both the direct link between abusive supervision and peer ostracism and the indirect relationship between abusive supervision and knowledge hiding via peer ostracism. This research adds to the existing literature by emphasizing the social learning dynamics surrounding peer mistreatment in the context of abusive supervision