Inform applicants that a job offer may be withdrawn if certain contingencies are not met. Draft a formal rescission letter.You will need to speak to a lawyer familiar with employment law in your state and possibly Illinois. Can an employer legally withdraw a prospective employee's job offer? In short, the answer is yes. There would typically be no issue with deciding that a job is not for you and withdrawing acceptance of the offer before you start. Not every state recognizes promissory estoppel claims in the context of job offers, but some do. Is it legal for an employer to rescind a job offer once it has been made and accepted? Send them a physical letter that includes the information that was provided over the phone. An employer can rescind his offer all the way up to when the employee starts and depending on the reason for the renegging, after one is hired.