Illegal Interview Questions to Avoid (and What to Ask Instead)
We've heard some version of "I was just making conversation" more times than we can count, right after an interviewer asked a candidate about kids, age, or where they're "originally from." Most illegal interview questions aren't asked with bad intent — they're asked because they feel like normal small talk. That doesn't change the legal exposure they create. Our guide to interviewing candidates covers the whole process; this page is specifically the topics to stay off of and what to ask instead.
A quick note before anything else: this page is general operational guidance, not legal advice. Employment law varies by state and locality, and some jurisdictions restrict additional topics — salary history and criminal history rules, in particular, differ widely by location. If you're unsure whether a specific question is compliant where you're hiring, consult an employment attorney before you rely on this page as your final answer.
Below is the topic-by-topic breakdown — what's off-limits, why, and a compliant alternative that gets you genuinely useful information without the legal exposure.
Off-limits topics and what to ask instead
The common thread across every row below: it's rarely the topic itself that's forbidden outright so much as asking about it in a way that could be used to discriminate. The compliant alternative usually asks about the job-relevant capability directly, instead of the personal characteristic that surrounds it.
| Off-limits topic | Why it's risky | Compliant alternative |
|---|---|---|
| Age | Can support a claim of age discrimination against candidates 40 and older under federal law | "Are you at least 18, or able to provide proof of age if the role has a legal minimum?" (only if age-restricted by law) |
| Religion | Can support religious discrimination claims and has no bearing on job capability | "This role sometimes requires weekend shifts — is that workable for your schedule?" |
| Family / pregnancy / marital status | Frequently used, even unintentionally, as a proxy to disadvantage candidates who are or might become parents | "This role requires occasional travel/overtime — is that something you can commit to?" |
| Disability | Protected under the ADA; questions about a disability itself are generally off-limits before a job offer | "Can you perform the essential functions of this role, with or without reasonable accommodation?" |
| National origin / citizenship specifics | Can support national-origin discrimination claims; citizenship-status questions are separately regulated | "Are you legally authorized to work in the United States for this employer?" |
| Arrest record | An arrest alone (without conviction) is generally not a lawful basis for an employment decision | "Have you been convicted of a crime that's relevant to this role?" (subject to local ban-the-box rules) |
Per the U.S. EEOC — prohibited employment policies, employment decisions and the inquiries that feed them shouldn't be based on protected characteristics including race, color, religion, sex, national origin, age (40+), disability, or genetic information. The same guidance body's EEOC — pre-employment inquiries covers pre-employment inquiries specifically — the exact interview and application-stage questions this page is walking through.
Why these questions feel like normal small talk
Almost none of the risky questions above sound sinister out loud. "Do you have kids?" is a completely ordinary thing to ask a stranger at a barbecue. In an interview, it's a different conversation entirely, because the answer can be used — even unintentionally, even if it never actually is — to make an employment decision based on a protected characteristic rather than job capability.
The fix isn't becoming a cold, scripted interviewer. It's redirecting the same curiosity toward the job-relevant version of the question — schedule flexibility instead of family status, physical capability instead of disability status, legal work authorization instead of national origin.
The small-business myth
If anything, smaller companies have less margin for a mistake here, not more — there's rarely a dedicated compliance function catching a risky question before it's asked, which makes having a written, pre-approved question list even more valuable than it is at a larger organization.
Building a pre-approved, safe question list
The most reliable fix isn't asking every interviewer to remember a list of prohibited topics in the moment — it's removing the need to remember anything by pre-approving the actual questions everyone will ask.
- Write the full interview question set in advance for every open role, using our guide to the best interview questions to ask as the starting structure.
- Have every question reviewed once against the off-limits topics above before it's used, not case by case in the moment.
- Brief every interviewer, not just HR, on the handful of topics to redirect away from if a candidate brings them up voluntarily — candidates sometimes volunteer this information unprompted, and how you respond still matters.
- If a candidate volunteers something like pregnancy or age unprompted, acknowledge it briefly and move the conversation back to job-relevant territory rather than following up on it.
- Keep interview notes focused on job-relevant answers only — notes that reference age, family status, or similar details create risk even if the actual decision never used them.
This pairs naturally with a structured interview process generally. Our guide to building an interview scorecard is built around scoring job-relevant competencies specifically — which, as a side effect, keeps the entire evaluation anchored to capability rather than anything adjacent to a protected characteristic.
When in doubt, ask the job-relevant version
A simple filter that catches most risky questions before they're asked: if the honest reason you're curious about something is personal rather than job-related, don't ask it. If there's a genuine job-relevant reason behind the curiosity — schedule flexibility, physical capability, legal authorization to work — ask that version directly instead.
This isn't about being cold or overly cautious in an interview. Candidates generally respond well to interviewers who ask specific, job-relevant questions, because it signals the role and the evaluation are being taken seriously. The topics on this page aren't a reason to avoid genuine conversation — they're a short, specific list of detours worth knowing before you're in the room.
One more reminder: this page is general operational guidance based on federal frameworks like the EEOC's published guidance, not a substitute for legal advice specific to your state, locality, and industry. If a specific question or a specific candidate situation feels ambiguous, that's exactly the case worth a quick check with an employment attorney rather than a guess.
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Post a job freeFrequently asked questions
What questions are illegal to ask in a job interview?
Do illegal interview question rules apply to small businesses?
Can I ask a candidate if they have children?
Can I ask if a candidate is legally allowed to work in the US?
Is it illegal to ask about a candidate's arrest record?
Is this page legal advice?
Glossary
- Protected characteristic
- A personal trait — such as age, religion, disability, national origin, or sex — that federal and often state or local law prohibits using as a basis for employment decisions.
- Ban the box
- State or local laws restricting when in the hiring process an employer can ask about a candidate's criminal conviction history.
- Pre-employment inquiry
- Any question asked of a candidate before a job offer is made, a category the EEOC provides specific guidance on to prevent discriminatory hiring practices.
- Adverse action
- A negative employment decision (such as not hiring) based in part on background-check information, which triggers specific disclosure requirements under federal law.
- Job-relevant question
- A question tied directly to the capability or requirement of the role, used as a compliant alternative to a question about a personal characteristic.