You want to give at least a two weeks' notice. Learn how to craft a professional resignation letter without notice with our guide.California laws say that, in general, you are not required to give your employers two weeks notice – or any notice – prior to quitting or leaving a job. You can quit anytime for any reason or for no reason. If the contract says you are to give 30 days notice, and you don't, you are in violation of the contract. I'm sorry to leave without notice. It's perfectly legal to quit without notice in the USA. You would likely be coded as ineligible for rehire in the old employer's HR system. Use one of our resignation letter templates. An emergency resignation letter is a polite letter given to a business or organization that states that an employee must terminate their employment abruptly.