This study aims to examine the effect of work-life balance on the job performance of Generation Z employees working under shift schedules in Gresik Regency. A quantitative research approach with a survey method was employed using purposive sampling. A total of 72 respondents who met the research criteria completed a five-point Likert scale questionnaire. The work-life balance variable was measured using the dimensions developed by Fisher et al. (2009), while employee performance was assessed based on the indicators proposed by Robbins and Judge (2017). Data were analyzed using IBM SPSS Statistics 30 through validity and reliability tests, Pearson correlation, simple linear regression, t-test, Ftest, and coefficient of determination analysis. The findings indicate that all research instruments were valid and reliable. Pearson correlation analysis revealed a positive and significant relationship between work-life balance and employee performance (r = 0.418, p < 0.001). Regression analysis further confirmed that work-life balance has a positive and significant effect on employee performance. The coefficient of determination (R² = 0.175) indicates that work-life balance explains 17.5% of the variance in employee performance, while the remaining 82.5% is influenced by other factors. These findings suggest that improving work-life balance can enhance the performance of Generation Z employees working in shift-based environments.
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