How to write a resignation letter that's effective immediately? Download Ohio Immediate Letter Of Resignation template, modify and send for signing using BoloForms Signature.I am resigning my position effective immediately. We've rounded up tips and examples for writing a resignation letter that'll help you maintain work relationships long after leaving a company. In this article, we explain how to write a twoweek notice letter and we provide templates, tips and examples to help you get started. In the first sentence, clearly state your intention to resign and that your resignation is effective immediately.