Production
System
Toyota defined seven categories or types of waste.
Technically, there are now nine 'deadly wastes':
- Overproduction (making more than what is needed, or
making it earlier than needed)
- Transportation (moving products farther than is minimally
required)
- Waiting (products waiting on the next production step, or
people waiting for work to do)
- Inventory (having more inventory than is minimally
required-Excess Inventory or Deadliest type of waste)
- Motion (people moving or walking more than minimally
required)
- Processing itself (relates to standalone processes that are
not linked to upstream or downstream processes)
- Defects (the effort involved in inspecting for and fixing
defects)
- Safety (unsafe work areas creates lost work hours and
expenses)
- Information (age of electronic information and enterprise
resource planning systems (ERP) requires current /
correct master data details)
