This project seeks to develop and validate a web application that provides fatigue-reduction plans based on previous research. Studies have found that the body clock can better align with the environment through timed light exposure to combat shift work fatigue, illness and injury. Shift workers on rotating night shifts will record their sleeping patterns, shift schedules, feelings of fatigue, and work-related errors. The application will generate a plan for each worker and suggest times for sleep, bright light exposure (from a portable light box), and light avoidance (using dark sunglasses).