This study examines the effect of work discipline and the happiness index on employee performance at the Department of Education, Youth, and Sports of Tojo Una-Una Regency. A quantitative survey method with an associative approach was used, involving 60 proportionally random-selected respondents from a population of 182 employees. Data were analyzed using multiple linear regression with SPSS version 25. The results show that both work discipline and the happiness index simultaneously have a positive and significant effect on employee performance, with an R² value of 0.327. Partially, work discipline (p = 0.025) and the happiness index (p = 0.003) also have a significant effect. These findings indicate that improving employee discipline—such as compliance with working hours and task responsibilities—and enhancing psychological well-being can increase productivity and work effectiveness. The practical implication highlights the importance of human resource management strategies focused on discipline and emotional well-being to improve public sector performance.