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Avoiding Legal Risks in Hiring: Practical Interview Do's and Don'ts
Discrimination claims at interview usually traces back to a hiring process loose enough to let one slip through. That's the gap between businesses that get sued and businesses that don't, and it's the gap that good interview practice closes.
Knowing which questions are off-limits is half the job. The other half is building a process where the right questions get asked, the answers get recorded fairly, and the decision afterwards can hold up to scrutiny if challenged. This blog covers the second half: the practical do's and don'ts that protect your business across the full hiring cycle, from job description to rejection email.
Before the interview: prepare the framework
Most legal risk at interview can be designed out before the candidate walks into the room.
Do start with the job description. Every question you ask should map back to a requirement you've documented. If "ability to work some weekends" isn't in the JD, you have no defensible reason to ask about weekend availability. If "five years' management experience" isn't listed but you reject a candidate for not having it, you've created an inconsistency a tribunal solicitor can pick apart.
Do agree a structured question set in advance. The same core questions for every candidate applying for the same role, the same scoring criteria, and the same evaluation framework. This looks like extra work upfront, and it's also the single most effective protection against an unfair process and the single most effective way to defend the process if it's ever challenged.
Do brief everyone who'll be in the room: founders, line managers, technical interviewers, anyone joining as a panel guest. Make sure everyone knows what they can ask, what they can't, and what to do if the conversation drifts.
Don't assume experience covers it. Long-serving managers who've interviewed dozens of candidates often have the most outdated assumptions about what's acceptable. Section 60 of the Equality Act 2010, which restricts pre-offer health questions, only came in fifteen years ago. Plenty of senior interviewers learned the trade before it existed.
Don't build a panel that all looks the same. Single-perspective panels are more likely to make biased decisions and harder to defend if those decisions are challenged. Where possible, mix gender, background and seniority across the people who'll meet the candidate.
During the interview: stay on script and listen carefully
The interview itself is where discipline matters most.
Do stick to your structured questions. You can probe deeper on the answers, but the core questions should be the same for every candidate. Consistency is what makes the process fair, and what proves it was fair if you're ever asked to demonstrate it.
Do take notes about what candidates said and how they performed against the criteria. Capture specific quotes, concrete examples, and scoring rationale. These notes are evidence in your favour if a decision is later questioned.
Do know how to handle unexpected disclosures. Candidates sometimes share information you didn't ask for: a health condition, a pregnancy, a family situation. The right response is to acknowledge the disclosure neutrally, redirect the conversation back to the role requirements, and arrange a separate conversation about reasonable adjustments later if needed. Pretending you didn't hear it is the wrong move. So is pivoting into a series of follow-up questions about it.
Don't improvise into rapport-building territory. The casual chat at the start and end of an interview is where most legally risky questions creep in. "How was the journey in?" is fine. "Did your husband mind you coming over today?" is not.
Don't ask questions you wouldn't ask every candidate for the role. If you ask a male candidate about their hobbies and a female candidate about her childcare arrangements, that comparison alone supports a discrimination claim. Apply the same questions to everyone.
Don't take notes about anything that isn't relevant to the role. Comments about a candidate's accent, perceived age, "fit", or family situation are exactly what an opposing solicitor will pull out at tribunal. If it isn't job-relevant, don't write it down.
After the interview: make the decision defensible
Decision-making is where good interview practice often falls apart, especially in SMEs where it's a single founder making the call.
Do score every candidate against the agreed criteria before discussing them with anyone else. Independent scoring before group discussion reduces the influence of dominant voices in the room and protects the integrity of the process.
Do document the rationale for hiring or rejecting each candidate. Two or three lines per candidate, tied to the criteria you set out at the start. "Demonstrated stronger examples of stakeholder management than other candidates" is defensible. "Felt like a better fit" is not.
Do retain interview notes and scoring sheets for at least six months after the decision. Discrimination claims have a three-month time limit from the act complained of, but extensions and follow-on claims happen, and you want the paperwork to hand if needed.
Don't decide on instinct and reverse-engineer the reasoning afterwards. Tribunals can spot it. The decision needs to follow from the evidence collected during the interview, not the other way round.
Don't discuss candidates in informal channels. WhatsApp messages between line managers about "the one with the kids" or "the older guy" are disclosable in tribunal proceedings. If a comment isn't appropriate for a panel meeting, it isn't appropriate for Slack either.
Communicating with candidates: clarity protects you
How you communicate with unsuccessful candidates often determines whether they pursue a claim.
Do respond to every candidate, including the ones you rejected after CV screening. Silence frustrates candidates and creates a sense of unfair treatment, which is when complaints get filed. A short, professional rejection email goes a long way.
Do offer brief, factual feedback if the candidate asks for it. Frame it around the criteria and the gap you observed. "We were looking for someone with more direct experience of [specific area], and another candidate demonstrated that more strongly" is fine.
Don't offer feedback that touches protected characteristics, even gently. "We were looking for someone with more energy" can be read as age-coded. "We wanted someone who'd be around for the long term" can be read as a comment on family planning. Stick to skills, experience and the role criteria.
Don't promise more feedback than your process can deliver. If you don't have time to provide detailed feedback to every unsuccessful candidate, say so politely. Vague half-explanations create frustration and invite candidates to fill in the blanks themselves.
What good looks like
Run a hiring process where every question maps to the job description, every candidate is asked the same core questions, every interviewer is briefed before the room, every decision is scored against documented criteria, and every rejection is communicated professionally with feedback that stays inside the role brief.
That's the framework that protects your business legally. It also tends to be the framework that produces better hires, because the discipline it introduces forces real focus on what the role actually requires rather than who the panel happened to warm to on the day.
Get the practical training
The do's and don'ts above are the framework. Putting them into practice across a real hiring team takes more than a blog can cover.
We're running a free 30-minute webinar on 30 April 2026 at 12pm GMT that walks through the questions that create legal exposure, the framework for running interviews that hold up to scrutiny, scoring candidates objectively, the role unconscious bias plays, and what to do when a candidate discloses something sensitive on the spot.
If you or anyone on your team interviews candidates, it's worth blocking out the half hour.
