The natural environment and sustainability play an increasingly important role in social work as a discipline and profession. This is often described as the ecosocial paradigm. Even though the paradigm shares important ethical foundations with human rights–based social work, the connection between both is rarely examined in social work scholarship. This article addresses the gap by asking the following questions: How is the ecosocial paradigm linked to the human rights discourse in social work? What is the environmental dimension of human rights, and what implications does it have for social work? How can a human rights–based social work encompass the environmental dimension? In response, the article argues for the integration of new environmental perspectives into human rights–based social work. First, it shows that social work needs to refocus on collective human rights, such as the right to a healthy environment, recently recognized by the United Nations. Regarding the rights of children and youth, good examples of social work advocacy can already be found. Second, research knowledge and practice within the ecosocial paradigm are valuable resources for human rights–based social work, mainly regarding environmental justice and the principle of sustainability. Ultimately, it is only possible to strive for the realization of human rights, social change, and an inclusive and sustainable future if the natural environment is integrated as a social work concern.