Professional resignation letter examples for different reasons. Free templates and writing guide to resign on a positive note without feeling awkward.How to Write an Immediate Letter of Resignation? 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 this article, we discuss what to include in a professional resignation letter and we share examples of resignation letters you can use for reference. In the first sentence, clearly state your intention to resign and that your resignation is effective immediately. Click on the image to download our immediate resignation letter example. Downloadable immediate resignation letter examples. No advance notice of termination or resignation is required. I apologize for any inconvenience this may cause.