Spell out those contingencies in your employment application and offer letter. There would typically be no issue with deciding that a job is not for you and withdrawing acceptance of the offer before you start.If you have the text message you might. 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. Inform applicants that a job offer may be withdrawn if certain contingencies are not met. Complete all preemployment requirements. See Conditional Employment Offers. Employers may withdraw their job offers, provided they do so at the appropriate time.