Until you make an offer of employment to a candidate you should not enquire about his or her health (including absence records in previous jobs) unless you have a specific use for any such information.
Once you decide to shortlist a candidate you may then need to know if they require any special arrangements to attend or participate in an interview.
If you had chosen not to shortlist the candidate, then not having yet asked them any questions around whether they might have a disability will help you to defend against any potential disability discrimination claim in an employment tribunal.
If your recruitment process involves a medical questionnaire - asking candidates or their referees about health or similar questions – you should review exactly what information is being sought, when and why. Ask yourself whether it is relevant to the role and if so, how you might intend to use the information. Would this affect your decision-making at that stage of the process?
Once an offer has been made you may then need to know more, for example in order to explore whether any reasonable adjustments need to be made to allow the employee to take up the role. At the point an offer of employment is made, you should make it conditional on satisfactory medical information, and you can ask about health information at that time.
MentorLive provides detailed “How To” guidance on recruiting employees. Our Advice Service can help you decide what medical questions you might still need to ask and how this might be justified.