# A3 problem-solving worksheet

An original Vrolen layout. Fill it in on one page, in order, and write down the evidence for every claim. If a section has no evidence, go and get some before continuing.

**Title:** ______________________  **Owner:** __________  **Coach:** __________  **Date:** ________

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## 1. Background

*Why does this problem matter to the customer or the system?*

-
-

**Check:** Could someone outside the team understand the stake in one minute?

## 2. Current condition

*What is happening now? Facts only.*

- Where and when it happens:
- Baseline measure and period:
- What you observed at the process (date, who was there):

**Check:** Is there a number and an observation behind every statement?

## 3. Target condition

*What result do you want, and by when?*

- Measure:
- Target:
- Boundary (what is in and out of scope):
- Date:
- Verification window (which shifts, products, conditions):

**Check:** Would two people agree on whether the target was met?

## 4. Causal analysis

*Why is it happening? List each candidate cause and the test you used.*

| Candidate cause | Test or evidence | Result (supported / ruled out) |
|---|---|---|
| | | |
| | | |

**Check:** Was each cause tested in a way that could have proved it wrong?

## 5. Countermeasures

*What will you change? Link each change to a tested cause.*

| Cause | Countermeasure | Expected effect |
|---|---|---|
| | | |

**Check:** Is this the smallest safe change that addresses the cause?

## 6. Implementation plan

| Action | Owner | Due | Guardrail |
|---|---|---|---|
| | | | |

**Check:** Does every action have one owner and one date?

## 7. Follow-up

- Prediction (what should happen):
- Result (what happened, over the verification window):
- Side effects:
- What we learned:
- Standard work or documents updated:
- Next problem or next cycle:

**Check:** Did you compare the result with the prediction, not only with the old baseline?