NONE 20260422063110962 wseas/wseas content-registration-form+ja@crossref.org content-registration-form WSEAS TRANSACTIONS ON ENVIRONMENT AND DEVELOPMENT 1790-5079 2224-3496 Indra Sani Faculty of Management, Alfa Universiti Collage Malaysia, Subang Jaya, Selangor Darul Ehsan, MALAYSIA Usman Mulyadi Alfa Universiti Collage Malaysia, Subang Jaya, Selangor Darul Ehsan, MALAYSIA Nurliza Haslin Binti Muslim Alfa Universiti Collage Malaysia, Subang Jaya, Selangor Darul Ehsan, MALAYSIA This study aims to analyze the effect of work-life balance on employee productivity at PT. MPI considers the role of work flexibility as a moderator variable and work stress as a mediator variable. The research uses a mixed methods approach with a sequential explanatory design. Quantitative data were collected through a Likert scale questionnaire on the entire employee population of respondents and analyzed using SEM-PLS. Qualitative data were obtained through in-depth interviews to reinforce quantitative findings. The results of the study show that work-life balance has a positive and significant effect on employee productivity and work stress. Work flexibility has a direct effect on productivity, but it does not play a role as a moderator in the relationship between work-life balance and productivity. Work stress has not been shown to mediate the relationship. These findings underscore the importance of organizational policies that focus on improving work-life balance to drive employee productivity and well-being in a sustainable manner. 04 22 2026 04 22 2026 353 29 https://creativecommons.org/licenses/by/4.0/deed.en_US 10.37394/232015.2026.22.29 https://wseas.com/journals/ead/2026/a585115-1449.pdf M. Peter and S. 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