Knock-out question
A knock-out question is a screening question a candidate must answer correctly to stay in the process for a role. Typical examples are “Do you have a valid driver's licence?” and “Can you work night shifts?”. A wrong answer shows that the candidate does not meet a hard requirement of the job.
Knock-out questions save time for the candidate and the recruiter. A candidate who cannot meet a hard requirement learns it in the first minutes, not after an interview. The recruiter spends time only on candidates who can do the job.
How does a knock-out question differ from a weighted question?
| Knock-out question | Weighted question | |
|---|---|---|
| What it checks | A hard requirement | A preference or a strength |
| Effect of a wrong answer | The candidate does not meet the requirement | The candidate scores lower but stays in |
| Answer type | Usually yes or no | Yes or no, a choice or an open answer |
| Example | "Do you have a forklift certificate?" | "Have you worked in a warehouse before?" |
| Use it for | Legal, safety or schedule requirements | Experience, flexibility, extra skills |
Most screenings combine the two: a few knock-out questions for the must-haves and weighted questions to rank the candidates who pass.
Which requirements make good knock-out questions?
A good knock-out question checks something the job cannot do without. Use these tests:
- The requirement is real. The job is impossible without it, for example a certificate the law requires.
- The answer is objective. The candidate can answer yes or no without guessing what you want to hear.
- The candidate can check it. They know whether they have a licence or can work nights.
Examples for frontline roles:
- Warehouse: "Do you have a valid forklift certificate?"
- Cleaning: "Can you start at 6 in the morning?"
- Transport: "Do you have a C driver's licence?"
- Any role: "Do you have the right to work in this country?" See right to work check.
Avoid knock-outs for things a recruiter can judge better in a conversation, such as motivation or years of experience. Too many knock-outs empty your pipeline.
How many knock-out questions should you ask?
Ask as few as possible. Two or three cover the hard requirements of most frontline jobs. Each extra knock-out removes candidates. In a tight labour market you need every candidate who can do the work.
Put the knock-out questions early in the screening. A candidate who does not qualify then spends less time on it.
Should a knock-out question reject a candidate automatically?
Be careful with automatic rejection. A candidate can misunderstand a question, especially on a phone call in a second language. A candidate can also answer "no" to a requirement the employer can solve, such as a certificate they can get in the first week.
Send the candidate to a recruiter instead. The recruiter checks the answer and decides. This keeps a person responsible for every rejection.
How does Ringtime handle knock-out questions?
In Ringtime you mark a screening question as mandatory. That makes it a knock-out question.
- The AI assistant asks the question by phone or WhatsApp, in the order you set.
- A candidate who fails a mandatory question goes to recruiter review. The assistant never rejects a candidate by itself.
- The other questions count by their importance: high, medium or low. Each candidate gets a score from 0 to 100.
- Candidates at or above your pass mark move on, for example to a booked interview.
- The answers and the result land in the Ringtime web app and in your applicant tracking system (ATS).
You decide per screening flow which questions are knock-outs and where the pass mark sits. Knock-out questions are one part of AI screening.
To set the questions that decide who moves on, see how Ringtime screens candidates.
