This study aims to analyze the influence of work motivation and work environment on employee performance through job satisfaction as a mediating variable at the Office of Manpower, Investment, and Integrated One-Stop Services (Disnaker PMPTSP) in Malang City. Using a survey method, questionnaires were distributed to all civil servant employees (ASN) in the institution, involving a total of 58 respondents. The variables studied include work motivation, work environment, job satisfaction, and employee performance. Data analysis was conducted using multiple linear regression models and path analysis to examine both direct and indirect effects among variables. The results indicate that work motivation and work environment positively and significantly affect job satisfaction. Furthermore, job satisfaction acts as a significant mediator in the relationship between work motivation, work environment, and employee performance. These findings highlight the importance of creating a conducive work environment and enhancing work motivation through effective managerial policies to optimize employee performance. The practical implications of this research suggest that Disnaker PMPTSP Malang City should continuously improve human resource management by providing recognition, enhancing workplace facilities, and fostering interpersonal relationships to boost employee satisfaction and performance. This study contributes to the academic discourse on the relationship between work motivation, work environment, and performance, particularly in the public sector. It also serves as a reference for future research to explore additional relevant variables, such as organizational culture and employee engagement, in improving public sector service quality.