- Jack Welch was appointed CEO of GE in 1981 and retired in 2001, transforming the company through his leadership. He believed in constructive conflict, annual planning meetings with business units, and "stretching" goals to drive vision. - Welch streamlined GE by eliminating layers of management, selling off non-core businesses, and acquiring other companies. He reduced the workforce from 404,000 to 221,000 between 1981-1994 but grew it to 310,000 by 2001 through foreign expansion. - Welch's management philosophy and innovations to GE's culture, like its operating system of biannual initiatives, became widely influential and made him renowned as one of the greatest managers in business history.