Based on social cognitive theory, this research takes a person-situation interaction approach to explore the motivation for employee green behavior. Using a mixed-methods approach, combining regression analysis and qualitative comparative analysis, we report empirical analysis of 214 employee questionnaires which demonstrates that biospheric values were significantly associated with employee green behavior. Further, servant leadership and socially responsible human resource management positively moderated the relationship between biospheric values and employee green behavior. Specifically, a three-way interaction among biospheric values, servant leadership, and socially responsible human resource management was found. In addition, the fuzzy set qualitative comparative analysis yielded two antecedent categories to motivate employee green behavior, which are employee values-driven and organizational scenario-facilitated. This study provides practical references for enterprise managers to emphasize individual biospheric values, establish service consciousness, and implement socially responsible human resource management to motivate employee green behavior in green transformation.