Learn how to write a resignation letter with a notice period. Professional resignation letter examples for different reasons.Free templates and writing guide to resign on a positive note without feeling awkward. Below, you'll find a suggested outline, examples for different scenarios, and tips on writing a resignation letter that works for you. A two (2) weeks notice resignation letter is the most common letter used when notifying an employer of an official resignation. Please accept this as my formal letter of resignation. I regret to inform you that, after much thought, I have decided to resign. Please accept this letter as a formal notice of my resignation. 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. I am writing to inform you that I have accepted an offer for a Marketing Assistant position at Company B. My last day at Company A will be February 21st.