Brief Job Description : The individual at work is responsible & accountable to leads limited improvement projects and / or serves as a team member as a part of more complex improvement projects lead by a Certified Green Belt or Certified Black Belt, typically in a part-time role. A Lean Six Sigma Yellow Belt possesses a thorough understanding of the elementary aspects of the Lean Six Sigma Method including competence in the subject matters contained within the phases of Define, Measure, and Control (DMC) as defined by the ZL Knowledge framework.