Dear (Supervisor's Name),. 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.Download Pennsylvania Immediate Letter Of Resignation template, modify and send for signing using BoloForms Signature. Key Actions Before Employee Separation. In general, a resignation letter is fairly brief. Dear (Manager's Name):. I am writing to notify you of my resignation from my position as (job title) at (company name). 2) Write a resignation letter. If you were fired, don't sign a resignation letter. You are also not required to list your reason(s) for quitting.