Glossary
Knockout question
A knockout question is a yes/no or multiple-choice screening question where one answer disqualifies a candidate because they don’t meet a hard requirement of the job.
Knockout questions are the bouncers of a hiring process. If the job requires a commercial driver’s license and the applicant doesn’t have one, there’s no point in either side spending more time. Asked well, they save everyone effort. Asked badly, they quietly reject people you’d have hired.
Good knockout questions
A good knockout question checks a requirement that is genuinely non-negotiable on day one:
- “Do you hold a valid forklift certification?”
- “This role requires working Saturdays. Are you able to?”
- “This role is based in our Austin office five days a week. Can you commute there?”
- “Are you able to start by June 3?” (only if the date truly can’t move)
Questionable ones
- “Do you have five or more years of experience?” Years are a proxy. Someone with three intense years may be stronger than someone with seven.
- “Do you have a bachelor’s degree?” Often not a real requirement, and it screens out capable people. See skills-based hiring.
- Anything touching protected characteristics or private life. Keep every question tied to what the job requires.
The risk of automatic rejection
Most applicant tracking systems can reject someone instantly based on a knockout answer. That’s efficient and brittle. Candidates misread questions, click the wrong option on a phone, or interpret “experience with Salesforce” differently than you meant it. An automatic rejection email means you never find out.
A safer pattern is to show the answers to a person, sorted or flagged, and let them decide. It takes seconds per candidate and catches the obvious mistakes. LessRounds works this way: screening form answers are shown to recruiters but never scored and never reject anyone on their own.
Writing tips
- State the requirement, then ask. “This role involves night shifts. Can you work them?” is clearer than “Are you flexible?”
- Keep to three or four. Each one should map to a real requirement you could defend.
- Offer “Not sure” or a short text box where the answer might be nuanced.
- Review your knockouts every few months. Requirements change, and old questions linger.
The knockout questions guide has more examples by role.