How to write a resignation letter that's effective immediately? 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. Learn how to write an immediate resignation letter with our comprehensive guide, including tips, examples, and a customizable template. In the first sentence, clearly state your intention to resign and that your resignation is effective immediately. Minnesota is an employment "at will" state. Looking to resign with a 24 Hours Notice Resignation Letter? Use our resignation letter template for notice-period roles. Download Minnesota Immediate Letter Of Resignation template, modify and send for signing using BoloForms Signature.