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.Learn how to write a professional resignation letter with our step-by-step guide, easy to use templates and helpful tips. Resignation letters are professional courtesies that extend your professionalism, even in the last days of current employment. Resignation letter template giving advance notice. Date. Dear (Manager's name),. I am writing to officially tender my resignation from (Company name) effective (Date). Name of the conditions say when in weeks, they are in person you. Tie say putting in two weeks notice, from my resume.