Definition of Waste:
Waste in a process is any activity that does not result in moving the process closer to the final output or adding value to the final output.
The main wastes are seven (7W):
- W1 – Overproduction
- W2 – Iventory
- W3 – Waiting
- W4 – Transportation
- W5 – Motion
- W6 – Process (useless steps in a process)
- W7 – Defects.
