The first-class man theory, developed by Frederick Taylor, is a management approach that seeks to encourage and maximize employee performance, encouraging them to reach their best potential in the work environment. This theory was part of the movement known as Scientific Management, which emerged in the early twentieth century and aimed to apply scientific principles to management and work. In short, Frederick Taylor's theory of the first-class man seeks to encourage people to dedicate themselves to their work and give their best, through the appropriate selection of talents, continuous training and a performance-based reward system. By applying these principles, organizations can improve efficiency, increase productivity and promote a healthier and more motivating work environment.