Sustainability ultimately depends upon human behaviour. At both individual and organizational levels, the actions that people take have profound social, economic, and environmental consequences. These consequences are manifest both in the immediate present and even more strongly in the experience of future generations. In this course, we will explore the human factors that influence the adoption of sustainable or unsustainable practices. Why do people prefer immediate gratification instead of longterm gains? How can we incentivize sustainable behaviour? What is the best way to act as an effective change agent within an organization? These questions will be addressed by examining fundamental topics in Psychology and Organizational Behaviour, including motivation, decision-making, and social dynamics. Over the course of the semester, our primary goal is to understand how insights from the behavioural sciences can be used to design and promote sustainable organizational practices.