"Tell me about a time you disagreed with a leader"

This question is a test of two things at once: whether you will raise a problem to someone senior, and whether you can lose an argument without becoming a problem yourself. Most candidates answer only one half. "I always defer to my manager" answers neither and reads as someone who will watch a bad decision happen quietly.

The answer has four beats

1. The disagreement, stated as a decision rather than a personality clash. What was being decided, and what you thought instead.
2. How you raised it — where, to whom, with what evidence. This beat carries most of the signal.
3. What happened. Note that you do not need to have won.
4. How you behaved afterwards, particularly if you lost.

"We were about to commit to a launch date that assumed the data migration would take two weeks. I'd done a similar migration and thought four was realistic. I didn't raise it in the planning meeting — I put together a breakdown of the last one, week by week, and took it to my director beforehand so she wasn't hearing it in front of the client. She still chose the earlier date, because the commercial pressure was real and she was carrying it, not me. I asked for one thing: that we agree in advance what we'd cut if week three slipped. It did slip, we cut the reporting module, and we launched on the promised date without a crisis."

Why that version works

• The disagreement is about the work, with evidence attached, not about being overruled.
• It was raised privately and in advance — which is the specific behaviour a hiring manager is checking for.
• The candidate lost, and says so without resentment, and without implying the director was wrong.
• They still shaped the outcome, which is the strongest thing in the story: losing the argument and improving the decision anyway.

If you won

Be careful with tone. A story where you were right and the leader was foolish is heard as a preview of how you will describe this company later. Give the other side its strongest form — say why their position was reasonable given what they knew — and let the outcome speak without commentary.

If you genuinely have no example

Do not invent one; invented conflict collapses under follow-up questions. Use a smaller, real disagreement with a peer or a client, and say plainly that your disagreements with managers have been on smaller things. That is a more credible answer than a manufactured confrontation, and the follow-up questions will be survivable.

They are not asking whether you are agreeable. They are asking what you do on the day you are the only one who sees the problem.