Learn what an acceptance letter is, see what to do before writing one, discover how to accept a job offer in a letter, and review examples for Acting swiftly in declining a job offer ideally within 24 to 48 hours of receiving it is crucial.1. Let your employer know as soon as possible. Avoid letting your employer wait too long. If you are wondering how to go about this issue without burning bridges, we have some tips. I am about to turn down an offer that I have signed and accepted. I don't want to burn bridges. In this article, we will guide you through the process of writing an effective acceptance letter for a job offer. Learn how to write a professional job offer letter acceptance mail reply with joining date with an easy format and practical samples. Work out their disputes without using courts.