The document discusses the Hawthorne Studies conducted at the Western Electric Company's Hawthorne Works in Chicago in the 1920s and 1930s. The studies sought to understand how various factors like illumination, hours of work and supervision impacted worker productivity. However, the researchers found that social and psychological factors like feelings of importance, participation and informal work groups had a greater influence on productivity than physical conditions. The Hawthorne Studies highlighted the importance of human relations in organizations and influenced the development of the human relations approach in management theory.