This study examined the effect of leadership styles: autocratic, democratic, and laissez-faire on employee job performance in the National Irrigation Administration (NIA), Linabuan Sur, Banga, Aklan. The research is descriptive-correlational and was conducted with seventy rank and file employees classified as regular, casual and job order. Leadership styles were analyzed for their impact on key performance indicators in the workplace: productivity, quality of work, and adherence to organizational standards. Data were obtained through the application of structured questionnaires and analyzed by descriptive and inferential statistical methods. Results indicated that democratic leadership style was the most practiced leadership style in NIA characterized by employee participation in decision making, joint setting of the goals and encouraged input from team members. In contrast, an autocratic leadership style was rarely utilized, between little autonomy granted to employees and strict oversight. Laissez-faire leadership showed moderate presence mainly through employees' autonomy, however, minimal supervision and other traits were rated as more neutral. Performance results are positively associated with passages of successful democratic implementation as noted with employees completing work systems, adapting as needed, and taking initiative. Laissez faire had mixed results, emphasizing the importance of balanced autonomy; high levels of autocratic approaches led to negative effects such as decreased employee engagement, job satisfaction, and morale. Depending on demographic profiles, such as sex, age, employment status, length of service, and job grade the study found that there is a significant relationship to perceived leadership effectiveness. The study highlights the importance of adaptive leadership approaches that are designed to empower and engage workers. This will have important implications for improving leadership practices in NIA and further strengthening operational efficiency and providing quality irrigation management services.