Purpose: This study aims to focus on the University of Aegean's non-academic staff's environmental sustainability attitudes and behavior both at work and at home, their perceptions for sustainability enforcement and their active participation skills. Design/methodology/approach: The research participants were the 101 non-academic staff working at the Xenia Hill campus in Lesvos island. The instrument used in this study was a questionnaire consisting of 45 questions, which was sent via e-mail during the summer of 2014. Findings: The analysis of the results brings light on the environmental profile of the University's non-academic staff on their intentions for greening their campus and the barriers that obstruct their attempts to promote sustainability at the University. Originality/value: The paper provides useful insights which allow a better understanding of the role of non-academic staff's environmental sustainability attitudes and behavior both at work and at home, their perceptions for sustainability enforcement and their active participation skills.