Lean Manufacturing and Six Sigma Definitions

Glossary terms, history, people and definitions about Lean and Six Sigma

Jack Welch

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John Francis “Jack” Welch Jr. (born November 19, 1935) is an American business executive, author, and the most famous Six Sigma champion while he was chairman and CEO of General Electric between 1981 and 2001.

Welch adopted Motorola’s Six Sigma quality program in late 1995. In 1980, the year before Welch became CEO, GE recorded revenues of roughly $26.8 billion and in 2000, the year before he left, they were nearly $130 billion. During his tenure at GE, the company’s value rose 4,000%.



  • James McNerney
  • Robert Nardelli
  • Jeffrey Immelt
  • Boeing


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