Please accept this message as my formal notice of resignation. I am fortunate to have received a long awaited opportunity that I cannot pass up.Learn how to write a resignation letter (and what not to include) and then use our example letters as a guide. Within one work day, provide a copy of the constructive resignation letter to the employee's union, as authorized. 24.3 Effective Resignation. In this article, we will explore the art of saying goodbye gracefully, providing you with valuable insights and tips on how to compose a resignation letter. In this article, we share tips for writing a short, simple resignation letter and offer examples for you to reference when creating your own. Professional resignation letter examples for different reasons. Free templates and writing guide to resign on a positive note without feeling awkward. Official Forms for Viewing and Downloading.