<p>Lack of psychological wellbeing and deterioration of mental health of the personnel is currently becoming an emerging issue in the corporate sector of Pakistan, due to the exceeding work demands as well as the hostile working environment in most organizations. To cater to this apparent issue, this study investigates the impact of decent work and socially sustainable HRM practices on the psychological wellbeing of workforce, incorporating both hedonic and eudaimonic perspectives, while examining the moderating role of employee voice. A survey was conducted based on the banking sector of Islamabad, Pakistan. A total of 203 responses were collected and analyzed via SPSS and Smart PLS. The findings of this study confirmed decent work to have a positive relationship with psychological wellbeing of employees and socially sustainable HRM to mediate the relationship between decent work and psychological wellbeing. However, the findings of the study did not support employee voice to be playing a moderating role in the relationship. This study educates managers regarding the importance of the protection of psychological wellbeing of their workforce, improves their understanding regarding the concepts of decent work and socially sustainable HRM, and conveys information about how these notions may be incorporated into their organization’s HR policies.</p>