I recently applied for a job which offered the National Minimum Wage. At the end of the interview the manager asked me for some documents and also how old I was.

After telling her I was 25 she told me she would be in touch, but it would be unlikely I’d get the job because she would prefer to hire someone younger. Is this legal?

Nobody should be asking you how old you are in a job interview. Being 25, you’re entitled to the National Living Wage. The Citizens Advice website has full details of the wages people are entitled to by law. But these rules shouldn’t mean employers avoid hiring people because of how old they are.

That’s known as ‘direct age discrimination’ in the Equality Act 2010. You’re also protected by the National Minimum Wage Act 1998, which says employers can’t not hire you (and they can’t fire you) because your age means you’re entitled to a higher rate.

We have a lot of information on our website about what to do if you’re being treated unfairly when applying for a job. If you’ve been discriminated against, there are steps you can take.

Make a note of what happened as soon as you can - noting down exactly what you were asked and any other remarks the interviewer made.

Next, you should write a letter of complaint to the employer, remembering to keep a copy for your own records. There’s advice on the Citizens Advice website on what this letter should include and you can also speak to an adviser at your local Citizens Advice to get help writing it.

If the letter doesn’t get an outcome you’re happy with, you could take the employer to an employment tribunal. You’ll need as much evidence as possible, including the original advert, job description, your notes about what was said and any contact you’ve had since.

Remember that you only have three months minus one day from the date that the ‘discriminatory act’ happened to start tribunal proceedings. You do this by contacting the government organisation Acas and telling them that you intend to bring a claim.

Nobody should have to worry about being discriminated against when job hunting. For more advice on your rights when searching for work, visit citizensadvice.org.uk/work or call Citizens Advice on 0808 223 1133