Purpose— This study examines the effects of Work-Life Balance and Work Engagement on teacher Performance, with Job Satisfaction as a mediating variable, among public junior high school teachers in Purbalingga District. Research Methodology— A quantitative explanatory design was employed. The population comprised 187 teachers, from which 132 respondents were selected using the Slovin formula and purposive sampling. Data were collected via an online questionnaire administered through Google Forms and analyzed using Partial Least Squares Structural Equation Modeling (PLS-SEM) in SmartPLS 4. Results— Work-Life Balance and Work Engagement have positive and significant effects on both Performance and Job Satisfaction. Job Satisfaction also positively and significantly affects Performance and partially mediates the effects of Work-Life Balance and Work Engagement on Performance. Research limitations/Implications— The findings support Conservation of Resources (COR) and Job Demands–Resources (JD-R) theories. Practically, schools should develop policies that promote work-life balance, engagement, and job satisfaction to enhance teacher performance. Future studies may examine broader educational settings and additional organizational factors. Originality— This study integrates COR and JD-R perspectives to explain how Work-Life Balance and Work Engagement influence teacher Performance both directly and indirectly through Job Satisfaction in the public-school context.
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