Work-in-Process

1. TERM HEADER Work-in-Process Abbreviation: WIP Domain Tags: [Manufacturing] [Inventory] [Flow] 2. CONCISE DEFINITION Work-in-Process (WIP) is the inventory of partially completed products sitting between the start and end of production — material that has been released to the floor but is not yet finished, sellable goods. 3. EXPANDED DEFINITION WIP includes everything caught mid-stream: parts waiting at a machine, sub-assemblies queued for the next step, batches cooling or curing. It ties up cash, hides quality problems, and lengthens lead time. In flow terms, WIP is the water level in the factory — and rising WIP with flat throughput is the classic signature of a hidden bottleneck. 4. WHY IT MATTERS Every dollar of WIP is cash that cannot be spent until the product ships. High WIP also stretches the time between a defect being created and being caught, so problems multiply before anyone notices. Controlling WIP is one of the fastest ways to shorten lead time and free up cash without adding capacity. 5. HOW MONITORZ REDUCES EXCESS WIP MonitorZ makes WIP visible object by object. [Factory GPS](/factory-gps) shows exactly where inventory is piling up, [Eliminate Production Bottlenecks](/eliminate-production-bottlenecks) clears the constraint causing the pile-up, and [Reduce Manufacturing Lead Times](/reduce-manufacturing-lead-times) compresses the time work spends waiting. Manufacturers using MonitorZ have seen production increase by as much as **133% within 120 days** across **500+ implementations**. See more on the [Solutions overview](/solutions). 6. FREQUENTLY ASKED QUESTIONS (FAQ) Q: What is work-in-process (WIP)? A: WIP is inventory that has entered production but is not yet a finished, sellable product. It sits between process steps, tying up cash and lengthening lead time. Q: Why is high WIP a problem? A: High WIP ties up cash, hides quality defects, and lengthens lead time. Rising WIP with flat output usually signals a bottleneck. Q: How does MonitorZ reduce WIP? A: MonitorZ tracks every object in real time, exposes where work is piling up, and helps clear the constraint causing it, so inventory stops accumulating between steps. 11. RELATED TERMS AND CONCEPTS Throughput, Cycle Time, Lead Time, Bottleneck, Just-in-Time.