It's customary to give at least two weeks' notice unless you have a different agreement with the employer. 6. The short answer is that an atwill employee is not required to provide two weeks' notice before quitting.I am writing to inform you of my two weeks notice. Effective August 18th will be my last day. Are you getting ready to leave your job? Here's how to write a professional two weeks' notice resignation letter, with examples. 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. I am writing to inform you that I have made the difficult decision to resign from my position at Phoenix Realtors. Know how to write a two weeks notice letter?