Plan --> Do --> Check --> Act is a continuous improvement problem solving model based on the the scientific method. It's cyclical nature builds upon previous efforts in order to sustain improvement and achieve further gains.


The Plan-Do-Check-Act Cycle  

  • Plan
    • Determine Current Condition
    • Describe Goal
    • Perform Root Cause Analysis on Gap between Current and Goal
    • Select Countermeasures and Develop Action Plan
  • Do
    • Implement Action Plan
    • Consider safety in all actions
  • Check
    • Assess Performance with Countermeasures in Place
  • Act
    • Confirm Improvement (Adopt), No Change, and/or Return to Plan
    • Sustain Results