How to write a resignation letter that's effective immediately? Learn how to write an immediate resignation letter with our comprehensive guide, including tips, examples, and a customizable template.Dear Ms. Emily Clarke,. Learn how to write a resignation letter due to family reasons with our stepbystep guide and sample letters. It's best to tell your boss that you're moving on to the next step in your career "facetoface or over video call," with at least two weeks' notice. This letter includes details such as your last day of employment, transition steps, words of gratitude and, optionally, your reasons for leaving. In this article, we cover everything you need to know about writing a resignation letter without notice and provide an example to get you started. Your resignation letter should be to the point, concise, and clear. Please accept this letter as my formal resignation. Today will be my last day of work.