A/Prof Jason Lee's primary research interests revolve around fluid balance, thermoregulation, and strategies to enhance human performance. He particularly focuses on the physiological demands of heat stress and how humans adapt to optimize performance and survival. Jason is actively involved in national and international panels related to human performance and safety. His research has led to the development of a comprehensive heat management system, involving the assessment of heat strain in different contexts, the formulation and evaluation of heat mitigation strategies, and their translation into policies, training directives, and safety regulations. Currently, Jason chairs the National Work Group on Heat Stress Guidelines for Workers in Singapore, and a member of the WHO and WMO Report on Climate Change on Workers' Health and Productivity. He also chairs the Scientific Committee on Thermal Factors at the International Commission on Occupational Health.