Is it unlawful to ask for applicants' date of birth on application forms?

No. There is nothing in the age provisions of the Equality Act 2010 that expressly prevents employers from asking job applicants for their date of birth. However, asking for such information may give the impression that the employer discriminates, or may discriminate, on grounds of age. Employers should think about why they ask this question. Do they really need this information at the application stage, or is it simply the case that they have always asked for it? If the latter, they should consider altering this practice. They can always obtain a successful applicant's date of birth later, as necessary. Alternatively, the date of birth could be requested on a separate part of the application form, to be used for monitoring and/or administration purposes, which should not be provided to the managers making the recruitment decisions.