The book "Fatigue Research: Eliminating Mankind's Greatest Waste. A First Step in the Study of Motion" is written by Frank B. Gilbreth and Lillian M. Gilbreth. In this book, the authors consider the problem of fatigue as one of the main factors limiting human productivity. They offer methods of studying movements and organizing the work process aimed at increasing productivity and reducing fatigue. The book is considered a classic in the field of labor organization and effective human resource management. The authors share their many years of experience, developed methods and practical recommendations aimed at optimizing the work process and increasing the efficiency of employees. "Fatigue research" is considered an important contribution to the development of management theory and the stimulation of labor productivity.