Background: Work-life balance is a crucial factor influencing employee psychological well-being and performance. An imbalance between work and personal life can increase job stress, trigger sleep disturbances, and decrease productivity. This study aims to analyze the effect of work-life balance on job stress, sleep disturbances, and employee performance. Subjects and Methods: This cross-sectional study was conducted at the Mineral and Coal Testing Center in Bandung from March to April 2025. A total of 207 patients were selected using exhaustive sampling. The dependent variable was work-life balance. The independent variables were work stress, sleep disturbance, and employee performance. Data were analyzed using path analysis. Results: The results of this study show that Work-life balance negatively affected job stress (b = -1.04; 95% CI = -1.18 to -0.91; p < 0.001) and sleep disturbance (b = -1.45; 95% CI = -1.65 to -1.23; p < 0.001), and positively affected performance (b = 0.42; 95% CI = 0.31 to 0.53; p < 0.001). Job stress positively affected sleep disturbance (b = 0.57; 95% CI = 0.49 to 0.65; p < 0.001). Conclusion: Work-life balance has a direct impact on performance and an indirect impact through reduced work-life stress and sleep disturbances. Interventions to improve work-life balance should be a company priority. to support employee productivity and well-being.
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