Yes it is ok to withdraw your acceptance. Honesty is always the best policy in this case.Second step: Validate with the employer that the offer has been formally withdrawn. Be polite, don't make up reasons. Just tell them you regret to inform them that you can't take the position. Can an employer legally withdraw a prospective employee's job offer? In short, the answer is yes. The letter should be dated and explain the decision's reasoning. If relevant, it should also state that you are an at-will employer. Employers can legally rescind a job offer for several reasons.