Learn how to write a professional resignation letter with our step-by-step guide, easy to use templates and helpful tips. 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.(Last Name), I am writing to inform you that I will be resigning from my position as (Title) at (Company Name). "Learn the essential steps and tips for writing a professional two weeks notice resignation letter. Dear (Manager's Name):. I am writing to notify you of my resignation from my position as (job title) at (company name). Below is a sample union resignation letter. You should check your union's constitution and bylaws to see if it is specific to whom a resignation must be sent. "Many people write resignation letters with too much detail," McClellan says. "A resignation letter should be short and to the point.