This study explores the practices of green human resource management (GHRM) and its relationships to environmental management systems (EMS) towards the development of green social responsibility program model. The study also looked at the impact and commitment to social responsibility programs and human resource management practices of selected HEIs in the provinces of MIMAROPA Region 4-B. The ability, motivation, and opportunity (A-M-O) theory was used to explain how the factors in this study related to one another and to enhance employees’ abilities and efforts by fostering a collaborative work environment . Alternately, to consider statistical treatment of data, through analysis of variations (ANOVA), and to determine the correlation between green HRM practices and the perceived level of environmental management systems’ performance of the Romblon State University (RSU), Palawan State University (PSU), and Mindoro State University (Min SU) as higher education institutions (HEIs) in MIMAROPA Region IV-B, Pearson’s product-moment correlation (Pearson’s r) was used to identify which among the green HRM practices that predicted the environmental management performance of these selected universities that significantly correlated the relationship between Green Human Resource Management and environmental Management Practices, with p value of less than 0.05, and it is interpreted that the correlation between the two variables is significant at 0.01 level (2-tailed). It means that GHRM affects the EMS through the full mediation of HEIs environmental knowledge, thus strengthening and validating the finding of a theoretical implication in terms of ability, motivation and opportunity (A-M-O)theory.