ahead of or in anticipation of demand generates such wastes as overstaffing and unnecessary storage and transportation costs because of excess inventory. 2. Waiting (time on hand). Watching or waiting for a machine, key inputs, or having slack with no immediate deadlines. 3. Unnecessary transport or conveyance. Carrying work in process (WIP) long distances creates inefficient transport or moves materials or information into or out of storage or between processes. 4. Overprocessing or incorrect processing. Taking unneeded steps to process the parts. Inefficient processing due to poor tool and product design, causing unnecessary motion and producing defects. Waste is also generated when providing higher-quality products or services than is necessary. 5. Excess inventory. Excess raw material, WIP, or finished goods cause longer lead times, obsolescence, damaged goods, transportation and storage costs, and delays. Also, extra inventory hides problems such as production imbalances, late supplier deliveries, defects, equipment downtime, and long setup times. 6. Unnecessary movement. Any wasted motion employees perform during their work, such as looking for, walking to, reaching for, or stacking parts, tools, etc. 7. Defects. Production of defects and correction. Repair or rework, scrap, replacement production, and inspection waste time, effort, and handling Liker, J. (2021). The Toyota Way.