This study was conducted to investigate the mediating effect of workplace spirituality in the relationship between equity sensitivity, OCB, and knowledge sharing. Data used for the analysis were obtained from 385 employees in domestic companies. The results showed that equity sensitivity and workplace spirituality had a positive relationship. Benevolents were higher on workplace spirituality than entitleds. Besides, workplace spirituality was positively correlated with both OCB and knowledge sharing. Finally, the relationships between equity sensitivity and both OCB and knowledge sharing were fully mediated by workplace spirituality. Based on the results, the implications, the limitations of the study, and the future research direction were discussed.