Be polite, don't make up reasons. Just tell them you regret to inform them that you can't take the position.Make it short and sweet; "Due to unforeseen circumstances I must decline the offer I previously accepted. Turning down a job offer after you already accepted it should be done gracefully. Learn how to write a letter for declining a job offer that you have already accepted and use our template and example as a guide. To create an applicant account, go to Career Pages website and click on the Sign In tab, and then Don't have an account? After careful consideration, I would like to withdraw my application for the job. The purpose of this Handbook is to provide you with an overview of employment with the City of Riverside. The clerk will fill it out for you. Be sure to have your transcripts in front of you when you fill out this section.