Work in Progress (WIP) refers to the number of items a team is actively working on at any given time. High WIP levels are often linked to delays, context switching, and reduced flow efficiency. Monitoring WIP per team or value stream helps improve focus, reduce multitasking, and increase delivery predictability.
By actively managing WIP, teams are better able to finish what they start, deliver smaller increments more frequently, and optimise the flow of work through the system.
Measure:
WIP = Number of Items in Active States at a Given Time
You may track this as a point-in-time snapshot or as a trend over time using rolling averages.
There are no universal WIP targets, but guidance includes:
| Team Size | Suggested Max WIP (Total) |
|---|---|
| 3–5 | 3–6 |
| 6–8 | 5–8 |
| 9–12 | 7–10 |
WIP should be proportional to team capacity, work item size, and available focus. Use empirical observation to define sustainable WIP levels.
Improves flow and focus
Lower WIP allows teams to concentrate on fewer things, reducing context switching and rework.
Increases throughput
Managing WIP is strongly correlated with shorter cycle times and higher delivery rates.
Reduces risk
Lower WIP levels reduce the cognitive load and surface issues earlier.
Enables better forecasting
Stable WIP supports more reliable delivery planning and predictability.
Kanban Method (David J. Anderson)
Limiting WIP is a foundational principle that enables flow, reduces delay, and increases predictability.
ActionableAgile (Daniel Vacanti)
Shows that WIP is a key lever in balancing capacity and demand.
Lean Thinking (Womack & Jones)
Advocates reducing excess work-in-process as a way to eliminate waste and improve system efficiency.