To help you draft your resignation letter like the example above, here's a checklist of what to include: What to include in a resignation letter. Download Pennsylvania Immediate Letter Of Resignation template, modify and send for signing using BoloForms Signature.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 the letter of resignation, leave your basic contact information in the header. 2) Write a resignation letter. Learn how to write an immediate resignation letter with our comprehensive guide, including tips, examples, and a customizable template.