INTRODUCTION: Environmental and sustainable social work is gaining momentum in social work due to the rising concern of climate change and environmental degradation. Despite the social work profession being committed to social justice, the perspectives of social workers practising in Aotearoa New Zealand on environmental/green social work are yet to be explored. This study explored social workers’ attitudes and beliefs on environmental justice and sustainable practice. It also examined what factors support them to consider environmental issues in social work practice. METHODS: A survey using an online portal was conducted with qualified social workers to assess their attitudes and knowledge. Descriptive, correlation and regression analyses were used to analyse the data. RESULTS: A total of 102 questionnaires were analysed. The results indicated moderate levels of pro-ecological perspectives and awareness of sustainability attitudes, high level of agreement including Māori and other indigenous tradition and wisdom in ecological justice, strong belief in climate change and the importance of factoring environmental issues in social work practice. While over 80% of the participants thought that environmental issues should be part of social work practice, there are still gaps in translating these into practice. Participants would like to see more environmental issues being integrated into social work education to better prepare graduates entering the profession. CONCLUSIONS: Social work education is urged to incorporate the natural environment, environmental justice and values and skills across the curriculum to advance the social justice mission to reduce the disparity among those who are vulnerable and marginalised.