[Closed] Asking for date of birth when applying for job

I work in data protection and this kind of thing is very poor practice.

The principles it engages are "necessary processing" and "data minimisation" - what is the purpose of the personal data processing and why is it necessary to collect the dob to achieve that purpose ? Otherwise you are quite right to not supply it.

They could argue that it is needed to differentiate between all the John Smiths who apply, but I don't think that argument flies during the recruitment process, not until they employ a John Smith.

I have junked a lot of form-filling from my life. It they want to know gender to allow you to buy a fridge, they don't get my money !

Always take your own copy of your CV to an interview.

The point of a CV is to get you an interview. If you've got an interview, you don't need a CV any more.