Learn how to write a resignation letter with a notice period. Taylor discusses 6 key aspects of writing a resignation letter, including when to give notice, what to say, how to format it, and how to deliver it.In the US I would say it's not safe, at least not entirely. That's communication with your prior employer usually from the email address they provided. Below, you'll find a suggested outline, examples for different scenarios, and tips on writing a resignation letter that works for you. My last day of work for you will be on X date. A two (2) weeks notice resignation letter is the most common letter used when notifying an employer of an official resignation. Then, state your intent to resign and exact date of departure. Two weeks is fine; however, be sure to give your DAEO ample time to provide you an ethics letter, should your new employer require it. When an employee queries their notice period, here's a suggested response: 1.