Waste is a step or action in a process that is not required to complete the process successfully. This is called “Non Value-Adding.” When waste is removed, only the steps that are required to deliver a quality product or service to the customer remain in the process. This is called “Value-Adding.”
The Eight Types of Waste Are:
1. Transport – Moving products that are not actually required to perform the processing.
2. Inventory – All components, work in process, and finished product not being processed.
3. Motion – People or equipment moving or walking more than is required to perform the processing.
4. Waiting – Waiting for the next production step, interruptions of production during shift change.
5. Overproduction – Production ahead of demand.
6. Over Processing – Resulting from poor tool or product design creating activity.
7. Defects – The effort involved in inspecting for and fixing defects.
8. The Human Potential – Waste and loss due to not engaging human potential.
Check out this humorous video on Lean 8 Wastes: