Abstract
The overall purpose of the current research is to develop an understanding of the mediating role of job stress on work overload and organizational performance. The research was conducted in  the banking sector of Pakistan. The data was collected from a random sample (n = 519) of middle and lower management staff of the commercial banks through questionnaire. Baron and Kenny (1986) four step model was followed in testing the mediating role of job stress between work overload and organizational performance. The findings of the study show that job stress  partially mediates the relationship between work overload and organizational performance. The research highlights its contribution towards the existing management literature by providing conceptual foundations and empirical evidence in order to understand the mediating role of job stress between work overload and organizational performance. The research also suggests  some managerial implications. The study bridges the research gap in the literature regarding the direct relationship between work overload and organizational performance, hence examining the role of  job stress as a mediator between work overload and organizational performance.
Keywords: Job Stress, Work Overload, Organizational Performance