In this article, we discuss what to include in a professional resignation letter and we share examples of resignation letters you can use for reference. Commence your letter with a formal salutation and a concise introductory paragraph.Learn how to write a 30day resignation letter stepbystep and review sample letters and a template to help you get started on yours. RE: Letter of Resignation. Please accept this letter as a notice of my resignation. I will go over a step-by-step resignation template letter you can use, how to structure it and provide examples of resignation letters. If you subsequently receive a request for separation information, you may attach a copy of this form (DOL-800) as a part of your response. (Area Code). (Number). Do not submit a letter of resignation. Have them issue a letter of termination due to position being eliminated requiring you being laid off.