Six Sigma Green Belts are workers who spend some of their time on process improvement team. They analyze and solve quality problems, and are involved with Six Sigma, lean or other quality improvement projects. The Six Sigma Green Belt certification requires three years of work experience in one or more areas of the Six Sigma Green Belt Body of Knowledge. Work experience must be in a full time, paid role. Paid intern, co-op or any other path work cannot be applied towards the work experience requirement. Educational waivers are not established.

Minimum Expectations for a Certified Six Sigma Green Belt

  • Operates in support of or underneath the supervision of a Six Sigma Black Belt
  • Analyzes and solves excellence problems
  • Involved in quality development projects
  • Participated in a project, but has not led a project
  • Has at least three existence of work experience
  • Has ability to demonstrate their knowledge of Six Sigma tools and process


Each certification candidate is required to pass a written examination that consists of multiple choice questions that measure comprehension of the Body of Knowledge. The Six Sigma Green Belt Certification is a four-hour, 100 multiple-choice question examinations. It is offered in the English language only.

Examinations are conducted twice a year, in June and December, by local ASQ sections and international organizations. All examinations are open-book. Each participant must bring his or her possess reference materials. Use of reference materials and calculators is explained in the seating correspondence provided to applicants.