Andrew Carnegie’s employees were treated awfully. He led them with a tyrannical hand. They were unquestionably underpaid and worked long shifts. The work hours consisted of two twelve-hour shifts each day and his companies ran year round only closing on the Fourth of July. Carnegie’s workers were laboring in filthy, unsafe environments in poorly ventilated rooms. His workers were laboring in filthy and unsafe environments. They were even beaten and threatened on a regular basis. Fellow businessman, John L. Lewis, who served as president from 1920 to 1960 of the United Mine Workers of America, was quoted as calling Carnegie a “mean-spirited, ruthless, business type who prostituted his workers and forced them to work in very dangerous conditions”.