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Green Belt

A “Green Belt” is a certification that indicates a person is qualified to lead a Six Sigma project or, less frequently, a kaizen team in Lean.

The Belt System Ranks

  • Yellow Belt: Team Participant
  • Green Belt: Team Leader
  • Black Belt: Trainer
  • Master Black Belt: Trains black belts; leads improvement effort

The Belt System

  1. The full belt system is more commonly used in Six Sigma than Lean, though Master Black Belts are prevalent in both.
  2. There is no official certifying body managing the belt system.

See “Yellow Belt” for more information about the belt system.

Green Belts

Green Belts have the skill to lead a continuous improvement project on their own. Because Six Sigma is more complicated and generally has its teams operating independently over an extended period, a formal training program makes more sense than in Lean where a team is generally together for a shorter period and works as a group for the duration of the project. That allows Black Belts or other more experienced personnel to have greater visibility on the team.


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