You don't have to send your resignation letter 30 days before the start of the school year, you have to send it 30 days before your planned last day. 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.A resignation letter should be written at least 30 days prior to the effective date of resignation. This sample resignation letter is available for use on UpCounsel. Then, state your intent to resign and exact date of departure. Submit the Withdrawal of Resignation form with a copy of your nomination letter to Field Services. In this article, we share tips for writing a short, simple resignation letter and offer examples for you to reference when creating your own. In this blog post, we provide you with a stepbystep guide on how to resign professionally via email, and we offer an example to get you started. Once your complete application is received, it will be assigned to a staff member for review. The body of your letter can be one statement that explains you're leaving your job on a specified date.