Module 5: Roles & Responsibilities in Six Sigma

Understanding the structure of Six Sigma roles is essential for executing successful improvement projects. Each role contributes uniquely to the overall process, and clear communication among them ensures that goals are met efficiently.

                                                       

White Belt vs. Yellow, Green, and Black Belt

In Six Sigma, roles are divided by “belt” levels, similar to martial arts. Each level reflects the individual’s training, expertise, and responsibility in Six Sigma projects:

• White Belt
  Entry-level participants. They are introduced to the basic concepts of Six Sigma and often support project teams with localized improvements and data collection.
  Example: A shop floor employee understanding how waste can be reduced in packaging.

• Yellow Belt
  Possess a basic understanding of Six Sigma principles and contribute to projects as team members.
  Example: A sales associate using customer feedback trends to assist in a CTQ (Critical to Quality) analysis.

• Green Belt
  Operate under Black Belts and lead smaller-scale projects while maintaining their regular roles.
  Example: A quality supervisor improving defect tracking using DMAIC tools.

• Black Belt
  Full-time project leaders with deep knowledge of Six Sigma tools. They handle complex problems and guide Green and Yellow Belts.
  Example: Leading a company-wide effort to reduce lead time by 25%.

• Master Black Belt (covered in advanced modules)
  Responsible for strategic implementation, mentoring, and training across multiple departments.

 Team Roles in Six Sigma Projects

Successful Six Sigma projects require a structured team with specific roles:

• Project Champion: Senior executive who sponsors the project, allocates resources, and removes obstacles.

• Process Owner: Individual responsible for maintaining the improved process after implementation.

• Team Members: Belts (White, Yellow, Green) and subject-matter experts who carry out the project tasks.

Each team member must be aligned with project goals and KPIs to ensure maximum efficiency.

Importance of Collaboration & Communication

No Six Sigma project succeeds without strong collaboration.

• Clear communication avoids misunderstandings.

• Cross-functional teamwork brings diverse perspectives.

• Regular reviews and feedback loops help align actions with objectives.

Real-life example: In a hospital setting, cross-functional Six Sigma teams (nurses, doctors, admin) reduced patient discharge time by 30% through effective collaboration.