Motion – poor design can severely affect productivity as workers and machines perform unnecessary motion through driving and walking.
Delay – increase in lead time as operations wait for material or as a result of line stoppages. Delays can also have a negative affect on customer service in the organization.
Conveyance – caused by poor layout and traditional batch production. Moving processes closer together can reduce this type of waste.
Correction – having to fix defective products and the cost associated with this type of waste.
Overprocessing – companies may sometimes lose touch with what customers require. Incremental performance improvements might not always fit in with customer requirements and add little or no value.
Inventory – there is both good and bad inventory. Unnecessary inventory not linked to demand can be classified as bad inventory.
Overproduction – producing things that you don’t sell. Overproduction is also the root cause of other types of inventory including waiting, motion and inventory.
Knowledge disconnection – poor flow of knowledge, ideas and creativity in the organization. Poor collaboration among supply chain partners can also lead to a knowledge disconnect in the organization.