How to write a resignation letter that's effective immediately? Learn how to write a professional resignation letter with our step-by-step guide, easy to use templates and helpful tips.Here Is a Resignation Letter Template: I am writing to inform you that I will be resigning from my position as (Title) at (Company Name). 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 the first sentence, clearly state your intention to resign and that your resignation is effective immediately. (For example, "I regret to inform you that I will be resigning from my position, effective immediately. In the third paragraph, mention your willingness to make the transition easier. Stick to one format. I apologize for any inconvenience this may cause. Give a clear reason for leaving, but there is no need to overexplain.