Purpose: The purpose of this study was to analyze the effect of Leadership Style, Work Environment, and Competence on Employee Performance through Job Satisfaction as an intervening variable at the Riau Islands Provincial Manpower and Transmigration Office, totaling 105 employees of the Riau Islands Provincial Manpower and Transmigration Office. Research Methodology: The research method uses a quantitative approach with the analysis of Partial Least Square (PLS) analysis techniques with the SmartPLS version 4.0 program. Results: The results indicate that Leadership Style has a positive and insignificant effect on Employee Performance. Work Environment has a positive and insignificant effect on Employee Performance. Competence had a positive and significant effect on employee performance. Job Satisfaction has a positive and significant effect on Employee Performance. Leadership style had a positive and significant effect on job satisfaction. Work Environment has a positive and significant effect on Job Satisfaction. Competence has a positive and significant effect on Job Satisfaction. Job Satisfaction is not able to mediate the influence between Leadership Style on Employee Performance. Job Satisfaction is able to mediate the influence between Work Environment on Employee Performance. Job Satisfaction is able to mediate the influence between Competence on Employee Performance.