Learn how to write an immediate resignation letter with our comprehensive guide, including tips, examples, and a customizable template. How to write a resignation letter that's effective immediately?Professional resignation letter examples for different reasons. Free templates and writing guide to resign on a positive note without feeling awkward. A one (1) week notice letter is written notification provided to an employer that an employee will no longer be working with the company within seven (7) days. In this article, we cover everything you need to know about writing a resignation letter without notice and provide an example to get you started. Commence your letter with a formal salutation and a concise introductory paragraph. PC Resignation Processing ; Step 1. Download and complete a Resignation Letter. Out of resources, what else have you got?