The authors define fatigue as the after-effect of work that reduces capacity and generates waste, then set out practical and scientific methods to identify, measure, and eliminate unnecessary fatigue. They describe how to conduct fatigue surveys, introduce immediate provisions for rest and better chairs, and present a Home Reading Box movement as an illustration of welfare practice. Guidance covers lighting, ventilation, safety, tools, workbench and clothing arrangements, while a fatigue museum gathers examples of devices. Measurement approaches include motion and micromotion study with cyclegraph and chronocyclegraph tools, and the text explains standardizing work, testing adjustments, and implementing improved practices.