Learn how to write a resignation letter with a notice period. 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 explain how to write a twoweek notice letter and we provide templates, tips and examples to help you get started. Professional resignation letter examples for different reasons. Free templates and writing guide to resign on a positive note without feeling awkward. Given that you haven't signed an official appointment letter, your employer may not have a strong legal basis to enforce a 2-month notice period.