Employee green behavior has received considerable attention in recent years because of its contribution to an organization's environmental performance. However, little is known about how personal and organizational factors can simultaneously affect employee voluntary green behavior. The present study draws on person-environment fit theory to investigate and employee voluntary green behavior can be facilitated by employee-organization fit. Based on a time-lagged survey study of 413 employees from three different manufactures of chemical products, the present study discovers a positive relationship between employee-organization fit and employee voluntary green behavior, and this relationship is mediated by perceived insider status. Moreover, the relationship between perceived insider status and voluntary green behavior is strengthened when employees perceive a green organizational climate. Insights for theory, practice, and future research are also discussed.