This study utilizes self-consistency motivational theory to investigate the association between employees' experience of co-worker ostracism and their promotive voice, while also examining the mediating role of organization-based self-esteem (OBSE) and the moderating effect of emotional stability. We collected three-wave data from personnel in North American organizations and found that social exclusion by co-workers hinders employees' expression of constructive views about work-related matters as it dampens their OBSE. We observed that this mediating role of OBSE is mitigated to the extent to which employees have emotional stability, a dispositional feature that helps them control emotions, discipline impulses, and handle challenges. Overall, our study identifies a key mechanism, employees' belief about their self-esteem and proficiency as an organizational member, through which co-worker exclusion hampers promotive voice, and it reveals how their emotional stability might contain this process.

Employing self-determination theory, in this study, we explore how workplace ostracism (being ignored and excluded by others) affects newcomer’s voice behavior. Through an empirical study with 353 matched supervisor–subordinate pairs from a large high-technology company, we find that workplace ostracism has negative influence on newcomer’s both promotive and prohibitive voice through the mediating effect of psychological needs satisfaction. In addition, narcissism moderates the effects of ostracism on psychological needs satisfaction. Theoretical and practical implications of these findings are discussed.