Lean Six Sigma Refresher
Work Breakdown Structure (WBS)
In Lean Six Sigma (LSS), a Work Breakdown Structure (WBS) is a hierarchical framework that breaks down a project into manageable components. It’s a project management tool often integrated into the Define phase of DMAIC, helping teams organize tasks, assign responsibilities, and track progress.
📌 Purpose of WBS in LSS
Clarifies scope → Ensures all project deliverables are identified and structured.
Organizes work → Breaks complex improvement projects into smaller, actionable tasks.
Assigns accountability → Links tasks to specific team members or roles.
Supports planning → Provides a roadmap for scheduling, resource allocation, and risk management.
Aligns with DMAIC → Ensures tasks are mapped to each phase of the methodology.
🗂️ Typical Structure of a WBS in LSS
Project Level
Overall improvement initiative (e.g., “Reduce Order Fulfillment Cycle Time”).
Phase Level (DMAIC)
Define → Charter, VOC, stakeholder engagement.
Measure → Data collection plan, baseline metrics.
Analyze → Root cause analysis, hypothesis testing.
Improve → Solution design, pilot testing.
Control → Standardization, monitoring plan.
Task Level
Specific deliverables (e.g., “Conduct VOC survey,” “Create Pareto chart,” “Train staff on new process”).
🎯 Key Takeaway
A WBS in LSS is essentially the project’s blueprint, ensuring that every step of DMAIC is broken down into clear, actionable tasks. It helps teams stay organized, prevents scope creep, and ensures accountability.