Organizations are heavily dependent on the job performance of their employees because their optimal performance causes organizational success or failure. Working conditions are changing rapidly. Therefore, the current study has examined the role of different sources of stress in job performance of employees. Life and work stress have been considered for the study. In addition the role of personality has also been considered as a potential moderator between the relationships of variables. Data were collected from the employees working in Indonesian banks. A questionnaire was used to collect data and was analyzed by using Smart-PLS software. Results of the study revealed that life related stress is negatively related with job performance. The relationship is significant and valued at -0.238. While work related stress was found to be associated with job performance which is valued at 0.343. The relationship is significant and the direction positive which means that employees tend to work better under stressful work settings. In addition to this the moderation results were also significant. The majority of the study hypotheses were accepted in light of the results. Overall the study makes a significant contribution to the available literature. Further, the study also provides some future avenues for research which are presented in the discussion and limitations section. Key words: Stress, life stress, work stress, job performance, Indonesia.