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.Download Minnesota Immediate Letter Of Resignation template, modify and send for signing using BoloForms Signature. Due to unforeseen personal reasons, I am unable to provide any notice. In the body of the letter, immediately state your intention to resign and provide your reasoning, including only positive feelings towards your work experience. I'm sorry to leave without notice. Learn how to write a professional resignation letter with concise tips and examples.