Employee performance is the backbone of organizational success in public service institutions, including PT PLN (Persero) UP3 Binjai. This study aims to analyze the effect of work-life balance and workload on employee performance, both partially and simultaneously. A causal associative quantitative approach was employed, with data collected through a Likert-scale questionnaire ranging from 1 to 5. A total of 58 respondents were selected from 136 employees using Slovin's formula at a 10% margin of error. Data were analyzed using multiple linear regression with SPSS version 26. The results indicate that work-life balance has a positive and significant effect on employee performance, evidenced by a t-value of 15.918 with a significance level of 0.000. Meanwhile, workload shows no significant partial effect on performance, with a regression coefficient of +0.074, suggesting that employees have sufficiently adapted to existing work pressures. Simultaneously, both variables significantly influence employee performance, with an Adjusted R Square of 0.949, meaning 94.9% of performance variation is explained by the two variables. These findings confirm that maintaining a healthy balance between professional and personal life is the dominant factor driving employee productivity in the electricity service sector.
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