Forms and Sources of Waste Waste consumes resources without adding value. Waste is anything customers do not value. Elimination of waste requires that its various forms and sources be identified. The following eight sources have been suggested as the major forms and sources of waste:
• Defective products
• Overproduction of goods not needed
• Inventories of goods awaiting further processing or consumption
• Unnecessary processing
• Unnecessary movement of people
• Unnecessary transport of goods
• Waiting
• The design of goods and services that do not meet the needs of the customer