How to write a resignation letter that's effective immediately? Learn how to write a short notice resignation letter with samples.Find a solution to the challenge of resigning on short notice. Learn how to write a short notice resignation letter with this stepbystep guide, template and examples of formal resignation. Pick the perfect wording and convey the message best suited for your situation. All you need to do is put the date of your intended departure, your name, the fact that you are resigning, the date and your signature. 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. (For example, "I regret to inform you that I will be resigning from my position, effective immediately. Resignation letters should be addressed to your boss and copied to HR or the appropriate administrative officer. Yesterday I gave my two weeks notice along with my letter of resignation.