Be polite, don't make up reasons. Just tell them you regret to inform them that you can't take the position.Is it illegal to rescind a job offer under New Jersey employment law? The answer is that sometimes, under certain conditions, it certainly can be. If you have made up your mind then write a simple letter telling them that you have decided to withdraw your acceptance letter. Find and download various legal forms, brochures, and self-help kits. If a form does not open, right-click the link to save it to your computer. This Agreement sets forth the terms, rules and regulations under which we will provide deposit services to you. Wondering how to decline a job offer you already accepted? Learn everything you need to know, including tips, examples, and expert advice.