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| Criterion |  Operations 8D Problem Solving |  Operations Ivy Lee Method |  Operations Weekly Review |  Operations Root Cause Analysis |
|---|---|---|---|---|
Purposedifferent | For an acute quality or delivery problem, the method structures immediate protection and root cause work together. It keeps the situation stable while the actual cause is investigated cleanly. | With a restless workday full of too many open items, the method creates radical simplicity. It directs attention to a short sequence instead of a broad, still-open field. | In a week with many open loops, the method creates distance from operational noise. It organizes commitments, calendar, and projects so the next week becomes workable. | When a problem keeps recurring and the cause stays unclear, the method exposes the underlying mechanism. It separates symptom, guess, and robust explanation from one another. |
Complexitydifferent | High | Low | Low | Medium |
Timedifferent | 1-6 Wochen | 5-10 min daily | 30-60 min | 1-4 h |
Participantsdifferent | 4-10 | 1 | 1 | 3-8 |
Formatdifferent | Workshop + async | Async | Async | Workshop + async |
Outputdifferent | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Daily Priority List, Completion Notes | Updated Task System, Weekly Focus, Next Actions | Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan |
Tagsno overlap | QualityProblem solvingRoot cause | PrioritizationProductivityExecution | ProductivityExecutionPlanning | Root causeProblem solvingQualityIncident |