"Shift work makes you sick," is the common belief. However, the impact of work schedule design on physical and mental health is greatly overestimated. The scientific evidence on this topic remains sparse and contradictory, making it surprising and even alarming how widely warnings about the dramatized dangers of night and shift work are spread, along with the flood of supposedly well-founded recommendations for shift planning. In this book, the authors provide a comprehensive, easily understandable overview of the current state of occupational medicine and occupational psychology research on night and shift work. They shed light on the various pseudoscientific misconceptions that have led to the overestimation of the harmfulness of night and shift work, based on their many years of experience in development.