Waste is any step or action in a process that is not required to complete a process (called “Non Value-Adding”) successfully. When Waste is removed, only the steps that are required (called “Value-Adding”) to deliver a satisfactory product or service to the customer remain in the process.
In any business, the greatest enemy of profitability is waste-- typically of time or money. In lean manufacturing, waste is any expense or effort that is put forward which does not transform raw materials into an item the customer is willing to pay for. There are 8 types of waste in Lean Manufacturing. Seven of the eight wastes are production process oriented, while the eighth waste is directly related to management’s ability to utilize personnel.