This study aims to analyze the effects of Work-Life Balance, Reward, Physical Work Environment, Non-Physical Work Environment, and Work Overload on Employee Performance in private companies in DKI Jakarta. This research employed a quantitative approach using a survey method involving 174 employees selected through purposive sampling. Data were analyzed using multiple linear regression with SPSS 26. The results indicate that Work-Life Balance (β = 0.527; Sig. = 0.000), Reward (β = 0.112; Sig. = 0.038), Physical Work Environment (β = 0.273; Sig. = 0.000), Non-Physical Work Environment (β = 0.221; Sig. = 0.000), and Work Overload (β = 0.320; Sig. = 0.000) have positive and significant effects on Employee Performance. The adjusted R² value of 0.514 indicates that 51.4% of the variation in Employee Performance can be explained by these five variables. The findings also reveal that Work Overload can function as a challenge stressor that enhances employee performance when supported by adequate job resources. This study contributes to the application of Job Demands-Resources (JD-R) Theory in explaining the relationship between job demands, job resources, and employee performance in private companies in DKI Jakarta.
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