The short answer is that an atwill employee is not required to provide two weeks' notice before quitting. You should inform your boss as soon as possible upon receiving a job offer you have accepted.An employer cannot force an employee to work. Conceivably, if the 30 day notice period is part of a contract, the employer can claim breach of contract. Please do not put in your two weeks notice UNTIL you get a formal offer. Employment Offer Letter Instructions. For this reason, we recommend that you always make a written record of your notices, along with proof of delivery. In this article, we explain how to prepare and send an Arizona 20day preliminary notice to secure your right to file a mechanics lien or bond claim. The employer is not legally obligated to accept that offer and may immediately accept the resignation or accept shorter than the offered notice. 47-2A206; Offer and acceptance in formation of lease contract.