- WIP Limit is not a strict rule but a trigger for discussion.
- There is no true WIP limit to be found. WIP limits are tools that you use to improve.
- Start with your gut feeling and adjust the limit up or down.
1. Lower is better than higher
- Better lead times.
- Faster Feedback.
- It forces you to remove impediments.
2. People idle of work idle
WIP too high = Work Idle
- Work items that no one is responsible for.
- You want the WIP limits to push you into resolving problems, not allow you to work without noticing them.
WIP too low = People Idle
- All items are being worked on, and there are people without work.
- Collaborate to get items done or raise WIP limit.
- If too low any disturbance -blockers, people out of the office, etc.- will cause all work to stop.
3. No limits is not the answer
- Eventually, the board will end up not being used, because you can't see the work items for all the work on the board.
- Removing the WIP limit will remove the incentive to improve. Nothing will force you to finish the ones there before starting new work.
- Strive to complete current work before starting anything new.