When you ask for reference, how you write your letter requesting a reference is important.
You will want to give the person you're asking an out, in case they aren't comfortable giving you a positive recommendation. It's important to make sure that the individual who is recommending you for employment can give you not just a reference, but a good reference.
I've actually seen some cases where the reference provider gave a bad reference and said so in terms that helped ensure the applicant didn't get the job offer.
These sample letters asking for a reference, both written and email, include the best ways to phrase your request and how to request permission to use someone as a reference.
Image Copyright Alison Doyle