Organisations globally are urged to embrace environmental sustainability responsibility in light of their potential positive impact on mitigating climate change. In Aotearoa New Zealand, the government’s introduction of environmental policies has prompted organisations to integrate such policies into their purpose, vision, mission, and activities. However, the success of these environmental sustainability efforts relies on individual employees attitudes and behaviours. The current study aims to explore the multi-level factors that influence the adoption of employee green behaviours within the context of Aotearoa New Zealand’s current climate and environmental policies, utilising the Abilities-Motivation-Opportunities Theory as a theoretical framework. Employing an exploratory, qualitative, comparative case-study approach, 12 semi-structured interviews were conducted across two case organisations. Reflexive thematic analysis revealed five factors that were common across organisational levels: Individualism, Alignment, Perceptions of Authenticity, Motivation, and Facilitation. This study contributes to the existing literature examining employee green behaviours, and provides direction for future research. Furthermore, it provides practical applications for organisations wishing to encourage their employees in adopting green behaviours to collectively achieve organisational green goals and enhance their environmental sustainability efforts.