Lillian Evelyn Moller Gilbreth is a pioneer in industrial engineering and scientific management. She and her husband Frank Gilbreth, developed new practices and ideas to increase labor efficiency and worker satisfaction. They created Gilbreth, Inc. to work in motion studies, a business efficiency technique intended to increase productivity while decreasing worker fatigue.
The books Cheaper by the Dozen and Belles on Their Toes (written by their children Ernestine and Frank Jr.), and the films based on the autobiographical books, tell the story of their family life with their twelve children, and describe how they applied their interest in time and motion study to the organization and daily activities of such a large family.