Organizations need potential and quality human resources, both leaders and employees must make good contributions and carry out their duties optimally to achieve goals. Organizational success is influenced by employee motivation factors that have an impact on performance results, for that the organization seeks to increase employee motivation and performance in the hope that organizational goals can be achieved. This study aims to analyze the mediating role of job satisfaction in the effect of work motivation on employee performance in the Regional Development Planning, Development and Research Agency (Bappelitbangda) of Pasuruan City, Indonesia. This research was conducted using quantitative descriptive analysis and analyzed using structural equation modeling (SEM) solved by linear regression technique. The data used in this study used primary data obtained from 43 respondents. The results of this study indicate that all test results are supported by job satisfaction as a mediation of work motivation on employee performance. Togetherness activities from the indicators of social needs have been shown to have the greatest influence on work motivation variables. Colleagues can provide solutions when there is a problem from the co-worker indicator that has the greatest influence on job satisfaction variables. Responsible for office tasks from work quality indicators have been shown to have the greatest influence on employee performance variables. The provision of work motivation following the needs of employees must be maintained so that employees can improve employee performance optimally to achieve organizational goals.