If you’re trying to improve efficiency, solve problems, or optimize workflows, The Pareto Principle (aka the 80/20 Rule) is one of the most powerful tools in Lean thinking.
What is the 80/20 Rule?
The Pareto Principle states that 80% of results come from just 20% of efforts. In Lean, this means focusing on the vital few processes, issues, or inefficiencies that create the most impact.
- 80% of delays come from just 20% of processes
- 80% of defects stem from 20% of root causes
- 80% of customer complaints arise from 20% of issues
Action Step: Prioritize and Solve
Want to put the 80/20 Rule into action? Start with this simple exercise:
- List your top three pain points
- Identify which one has the biggest impact
- Tackle that problem first—don’t spread your focus too thin!
By addressing the most significant bottlenecks first, you’ll maximize efficiency, minimize waste, and create faster improvements.
Need Help Prioritizing? Struggling to find your 20%? We can help.

