The study was designed with a view to investigate the quality of working life QWL in relation to mental health of bank employees. A total number of 200 bank employees were selected from banks of Haridwar and Dehradun Uttaranchal, comprising 150 employees from public and 50 employees from private sector banks. For the study primary data has been collected through the survey method. The result revealed significant positive correlation between QWL and mental health. Private sector bank employees were found to be more mentally healthy than the employees of public sector banks. Significant difference between the quality of working life of the employees of public and private sector banks was reported. The study also revealed significant difference between the mental health of high and low quality of working life groups. In public sector banks social integration in the work organization and in private sector banks safe and healthy working condition has the highest contribution towards mental health.