As long as you have not start work in the company, you can withdraw your acceptance letter. If you have made up your mind then write a simple letter telling them that you have decided to withdraw your acceptance letter.Considering dropping, withdrawing from or repeating a class? Understand your options and make an informed decision. Thank you very much for considering me for the CNS position at Kaiser Oakland. Turning down a job offer after you already accepted it should be done gracefully. All candidates must be past the probationary period, and in good standing at the Port of Oakland or City of Oakland. 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. View and obtain the entire collection of SCAO-approved forms. The SCAO forms that are most frequently requested have been included on this site in .