Green Human Resource Management (GHRM) has emerged as a strategic approach that supports environmental sustainability goals by contributing to the framework of standards guiding corporate operations, as organizations increasingly recognize the importance of environmental responsibility and sustainable development initiatives. The purpose of this study is to evaluate how GHRM affects university students' opinions of themselves as possible workers through In-Role Green Behavior (IRGB). In order to do this, 693 university students from different regions of Vietnam participated in a survey to gather data. The primary statistical method used was partial least squares structural equation modeling, or PLS-SEM. The results of the study demonstrate a strong and favorable correlation between IRGB and GHRM. Furthermore, the study confirms the important mediating roles that GHRM plays in the relationship between IRGB of Green Psychological Climate (GPC), Green Work Engagement (GWE), Personal Moral Norms (PMN), and Green Commitment (GCM).