This study was meant to investigate the association between workplace ostracism and employees’ performance through the mediating mechanism of work stress. The moderating role of Family motivation between the association of work stress and employees’ performance was also investigated. Data was collected through structured questionnaire from the employees working in different private banks of Pakistan. 201 responses were used in the data analysis. The result of the study showed that there was significant association between workplace ostracism and employees’ performance in presence of mediating mechanism of work stress. The results of this study also showed that family motivation moderates the relationship between work stress and employee’s performance in such a way that higher the family motivation, weaker the association between work stress and employee’s performance. Theoretical and practical implications of this study are also discussed Supervisor:-Dr. Hassan Rasool