Due to unforeseen circumstances, I must resign. In this article, we share tips for writing a short, simple resignation letter and offer examples for you to reference when creating your own.Letter of resignation effective April 25, 2022. Does this mean that April 25, 2022 is the last day you're coming in for work? Learn how to write a professional resignation letter with our step-by-step guide, easy to use templates and helpful tips. Simply state something like "Effective this dste, consider this my two week's notice. My last day will be September 1. Download Pennsylvania Immediate Letter Of Resignation template, modify and send for signing using BoloForms Signature.