This article proposes a framework that indicates opportunities for integrating psychology into research on sustainability and sustainable development. The central issue proposed is motivation in the workplace with a strong focus on employee health and optimal functioning. The main methodological issues are formulated in four assumptions: (1) Health from the perspective of health per se; (2) an individual seen as an agent; (3) an agent in the situation and context; (4) the life-span development perspective. The article refers in the narrative review to the most influential conceptualizations and research. This proposition shows a way forward and offers new opportunities to formulate challenging and important research questions in the psychology of sustainability and sustainable development.