The Pareto principle has been seen working in various fields, and domains:
- Sales and Marketing departments recognised that 20 percent of the customers brought 80 percent of the products, and 20 percent of their sales force made 80 per cent of the sales.
- Businesses realized that 20 percent of the costs led to 80 per cent of the expenses. They saw that only about 20 percent of their effort created 80 percent of productivity.
- Human Resource departments observed that 20 percent of the employees created most of the value (80 percent).