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.If you're wondering how to write a resignation email without a notice period, then our sample can help. Learn how to write a short notice resignation letter with this stepbystep guide, template and examples of formal resignation. Just keep it short and sweet. Don't go into story telling mode. If you live in an at-will state, there is no requirement to give any notice for leaving or for your termination. You should be prepared to leave at any time. Lieu of notice in the event the contract of service is terminated without notice or without waiting for the expiry of the notice period. 2. Copyright 2025 The Associated Press.