{"id":"overproduction","model_id":"Overproduction","name":"Overproduction","summary":"Overproduction is producing more, sooner or faster than is required by the next process. Taiichi Ohno considered it the most grievous form of waste because it generates and hides other wastes such as inventories, defects, and excess transport.","study_notes":["The document cross-references Batch-and-Queue, Taiichi Ohno (1912-1990), and 7 Wastes.","Ohno considered overproduction the most grievous form of waste."],"safety_notes":[],"sources":[{"url":"https://www.lean.org/lexicon-terms/overproduction/","title":"Overproduction - Lean Enterprise Institute","accessed":"2026-10-25"}],"verification":{"status":"source_checked","checked_at":"2026-10-25","values":1,"method":"llm_source_check"},"updated_at":"2026-10-25","type":"operational","spec":{"kind":"methodology","related":[]},"url":"https://machineschema.com/operational/overproduction","license":"https://creativecommons.org/licenses/by/4.0/"}