摘要:Drawing on trait activation theory, this research explores the intrapersonal consequences of perfectionism in the workplace by examining the relationships between self-oriented perfectionism (SOP) and two distinct job performance dimensions, i.e., task performance and organizational citizenship behavior (OCB) and the moderating role of interactional justice on these relationships. Using field data collected from 121 employee–supervisor dyads in South Korea, we found a unique and incremental predictive power of employee SOP on job performance, specifically task performance. Moreover, the results showed that the interaction effect of employee SOP and interactional justice on OCB was significant, such that the trait of SOP was activated to enhance OCB when interactional justice was low. Theoretical and practical implications are discussed.