Multi-stage maintenance request workflow with conditional routing through four approval gates: requestor submission, direct manager review, maintenance department head validation, and asset manager sign-off. Requests flow from initial submission through optional direct manager approval, then mandatory maintenance department head review with result documentation, and finally asset manager confirmation of completion. The workflow enforces mandatory rejection reasons at critical gates and ensures full audit trail across all stakeholders. Fork this diagram on Diagrams.so to customize approval hierarchies, add SLA timers, or integrate with your maintenance management system.