All organizations still trying to find out exact way to access their goal and raise their performance due to escape in strong competitive business environment in current era. This paper attempts to defined the view that the relationship between Job satisfaction and Task performance in Mongolian organization‟s employees which are important. Testing and expanding the concepts how to adjust them through Mongolian organization that related to improving employee‟s task performance. Furthermore, this study finds that Job satisfaction and Organization commitment are positively and partially mediation affected to Task performance. Moreover, this study searched to check moderation role of Locus of control on the relationship between job satisfaction and task performance. Also this study result shows moderation role of Locus of control on the relationship between job satisfaction and task performance. This study collected data from Mongolian five main business fields including Government, Mining, Social communication and Journalism, Health and Service which are vital in Mongolian society recently. Total 350 questionnaires were handled to respondents through hardcopy and 300 responses collected with 85.7% returning. The result shows following: (1)The Job satisfaction and Organization commitment have a positive effect on the Task performance; (2) Job satisfaction has a positive effect on the Organization commitment; (3) the Organization commitment is a partially mediator on the relationship between Job satisfaction and Task performance. Identifying what factors influence to employee‟s task performance for organization to deal with their issues in order to improve employee‟s task performance is an important.
