You want to give at least a two weeks' notice. Unless you have a specific clause in a signed contract requiring a 2 week notice then Illinois is employe at will.Is an employee required to give two weeks notice when quitting a job? Atwill employees can quit at any time with no notice. Please accept my sincerest apologies for being unable to provide you and the Davidson Team with a notification that includes a minimum two-week notice. Quitting without notice typically means leaving a job immediately without providing the customary two weeks' notice to your employer. It's time to quit the job, and you're not giving two weeks' notice. Here's how to politely write a resignation letter, effective immediately. A twoweek notice period is standard, but not required. You can give however many weeks worth of notice that you feel is appropriate.