Here's what to include in a resignation letter, with examples and templates. 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. 2) Write a resignation letter. Write a formal Board Resignation Letter. Include key elements such as: Your intention to resign. A simple resignation letter format includes a resignation statement, an appropriate notice period, and an expression of gratitude. The employee should make sure to include their name, current job position, a brief explanation of why they are resigning, and what date their last day will be. Make sure to follow proper business letter format in your letter. Key Actions Before Employee Separation.