One of the biggest problems in business processes is rework. Anything that has to be re-done, re-built, re-packaged, re-anything is a waste. If the service or product is not done right the first time, the individual (and the organization) experiences rework, resulting in more time, materials, and cost to the final service or product. If you work by the hour, reworking your deliverable may look like you're getting paid a lot to produce very little. And you'd be correct.