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.This letter informs your employee that you must depart right away without the standard two weeks' notice. 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. Resignation Letter No Notice. Customize any of these resignation letters in minutes using our free AI-powered resignation letter builder.. Create an Immediate Resignation Letter without a notice period using our free printable templates. Resign with a professionally designed document. Hi,. Please be advised that I am resigning my position with immediate effect. Regards,.