Knockout question

A decision rule inside the form

A knockout question applies a decision rule that the employer configured in advance. It fits a requirement that is genuinely necessary for the role and can be answered in the form without relying on judgement about a candidate’s overall potential.

It differs from a required question. A required question asks the candidate to provide information; it does not, by itself, determine the outcome. The distinction matters because a question can be useful for a recruiter to review without being a reason to reject someone automatically.

Set the criterion before applications arrive

Write the requirement in the job ad and decide which answer is disqualifying before the application goes live. The hiring team should be able to explain why that criterion is needed for this role. If the answer needs context, evidence, or an exception, it is usually better handled in human screening.

Avoid turning preference into exclusion

Years of experience, familiarity with one tool, or a preferred background can help a team choose questions for a conversation. They may not be suitable as an automatic filter. A broad rule can remove candidates whose experience has an equivalent but less obvious form.

Check the outcome that follows

The configured question and the candidate communication are separate parts of the flow. In Join, answer-triggered knockout rejection differs from an elapsed-time automatic rejection. Teams should make sure the message and review route match the decision they actually intend to make.