How to write a resignation letter that's effective immediately? 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.Learn how to write a short notice resignation letter with this stepbystep guide, template and examples of formal resignation. I regret to inform you that I will be leaving XXX on June 13th, 2022. It's time to quit the job, and you're not giving two weeks' notice. Here's how to politely write a resignation letter, effective immediately. Use this resignation letter example to inform your employer that you need to resign immediately and will not be able to give two weeks' notice.