Questions That Are Illegal to Ask in an Interview — and What to Say When One Comes Up

Most articles on this topic stop at the list. The list is easy to find and nearly useless on its own, because the moment that actually matters is the four seconds after the question lands, when you have to decide between answering something you shouldn't have been asked, refusing and looking difficult, or steering it somewhere useful. This piece covers the list quickly and then spends most of its length on that third option.

What US federal law actually protects

There is no single statute listing banned interview questions. What exists is a set of protected characteristics, and asking about them creates evidence of discrimination — which is why trained interviewers avoid the subject entirely. The characteristics come from these laws:

• Title VII of the Civil Rights Act of 1964 — race, color, religion, sex, and national origin.
• Age Discrimination in Employment Act (ADEA) — age, for workers 40 and over.
• Americans with Disabilities Act (ADA) — disability. The ADA is stricter than the others about timing: before a job offer, an employer generally may not ask about disabilities or require a medical exam at all, even in a friendly way.
• Pregnancy Discrimination Act — pregnancy, childbirth, and related conditions, as an amendment to Title VII.
• Genetic Information Nondiscrimination Act (GINA) — genetic information, which includes family medical history.

Two things follow from this that surprise people. First, the question doesn't have to be hostile to be a problem — "do you have kids?" as small talk touches the same protected ground as asking it pointedly. Second, an employer *is* allowed to ask whether you can perform the specific duties of the job, with or without accommodation. "Can you lift 20 kilos repeatedly?" is fine. "Do you have a back problem?" is not.

The questions this turns into, in practice

Grouped by the protected characteristic they touch, with the version that is actually legal beside it:

• Age — Off-limits: "How old are you?", "When did you graduate high school?", "How many years until you retire?" · Legal: "Are you over 18?" (where the role requires it), "Are you able to work the scheduled hours?"
• Family and pregnancy — Off-limits: "Are you married?", "Do you have children?", "Are you planning to have kids?", "Who watches your kids?" · Legal: "This role requires occasional weekend travel — can you meet that?"
• Disability and health — Off-limits: "Do you have any medical conditions?", "How many sick days did you take last year?", "Why do you use a cane?" · Legal: "Can you perform the essential functions of this job, with or without reasonable accommodation?"
• National origin and citizenship — Off-limits: "Where are you from originally?", "Is English your first language?", "What's your native language?" · Legal: "Are you legally authorized to work in the United States?", and — where the job genuinely requires it — "Which languages do you read or speak fluently?"
• Religion — Off-limits: "What church do you attend?", "Do you observe any religious holidays?" · Legal: "This role includes Saturday shifts — are you available to work them?"
• Race and ethnicity — Off-limits: any question about it, including indirect routes like "what does your last name mean?" · Legal: nothing about this belongs in a hiring conversation.
• Arrest and conviction history — Varies more than any other item on this list. Many states and cities restrict when a criminal-history question may be asked (often only after a conditional offer), and asking about *arrests* that produced no conviction is treated differently from asking about convictions. Check your own state.
• Salary history — Not a federal protected characteristic, but banned or restricted in a growing number of states and cities. Where it is banned, "what do you currently make?" is the illegal version and "what are you looking for?" is the legal one.

Why you'll still get asked

The most common reason is dull: the person interviewing you has never been trained to interview. In smaller companies, the hiring manager is often the person who will be your boss, doing their fourth interview ever, filling silence with the same small talk they'd use at a party. "So are you from around here?" is a friendliness reflex, not a screening tactic.

That matters because it changes the right response. A question asked out of social clumsiness, answered with a citation of Title VII, ends the interview in spirit even if it continues on the calendar. A question asked deliberately — probing your pregnancy plans after you mentioned a wedding — tells you something worth knowing about the employer. Your read of which one you're in is doing most of the work.

Three ways to answer, in order of how often you'll want them

1. Answer the job question hiding inside it

Nearly every off-limits question has a legitimate worry underneath it. Answer the worry and skip the question. This works because it gives the interviewer what they actually needed, so it doesn't feel like a dodge.

• "Do you have kids?" → "If you're asking about availability: I can do the core hours you described, and I've handled on-call rotations before."
• "When did you graduate?" → "I've got [N] years in [field], the last [N] of them doing exactly the work in this posting."
• "Where are you from originally?" → "I'm authorized to work here without sponsorship. I've been based in [city] for the last [N] years."
• "What's your current salary?" → "I'm targeting [range] for this scope. What have you budgeted for the role?"

2. Ask what it's for

One neutral sentence — "Can I ask how that factors into the role?" — does three things at once. It gives a clumsy interviewer an exit, it makes a deliberate one say the reason out loud, and it costs you nothing either way. Keep your tone genuinely curious rather than pointed; the words carry the message without help.

3. Decline, briefly and without heat

"I'd rather keep this to the role, but I'm happy to go deeper on [relevant thing]." Then stop talking and let them redirect. You do not owe an explanation for declining, and adding one usually reopens the subject. This is the right choice when the question is clearly deliberate, or when you've decided you don't want the job and would rather leave with the boundary intact.

What this tells you about the employer

Treat it as data, not just as a problem. A single awkward question from a first-time interviewer at a ten-person company is noise. The same question from an HR professional, or two interviewers in the same loop circling the same protected ground, is a signal about how the place operates once you're inside. You are also interviewing them, and this is one of the few moments that shows you something the careers page can't.

Before you get in the room

The questions above are easier to handle when the rest of the interview isn't also a scramble. Two things reduce the odds you'll be improvising: knowing which parts of your background the posting actually cares about, so you can steer toward them, and having your own specifics ready in numbers rather than adjectives. Our guide to preparing for an interview on a time budget covers how to do that without over-rehearsing, and tailoring a resume to a job description covers the earlier step of deciding what to emphasize.

One last practical note. If a question in an application form — not a live interview — asks for something on the list above, that is worth more caution than the same question asked verbally, because the form is a record and it applies to every candidate. A verbal slip by one manager is a mistake; a field on a form is a policy.