The short answer is that an atwill employee is not required to provide two weeks' notice before quitting. A common misconception is that two weeks' notice is a legal requirement.There is no federal or Arizona law that makes this a requirement. Don't put in a two weeks. As soon as your onboarding is complete and you have a scheduled first day of training you quit without notice. A two weeks' notice has generally been seen as a common courtesy. Though both are used to inform supervisors that you've chosen to no longer work with them. A short resignation letter is the way to go. Include your name, position, the date of resignation and the intended last day of work in the first paragraph. Start with a two weeks notice letter.