Due to unforeseen circumstances, I must resign. Dear (Supervisor Name):.This letter is to inform you that I am resigning from my position as (job title) with (company name), effective (date). Learn how to write a professional resignation letter with our step-by-step guide, easy to use templates and helpful tips. 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. "I Would Like To Inform You That I Am Resigning From My Position Effective From 07Dec2020" today is 5th Dec 2020. Is this resignation valid? (For example, "I regret to inform you that I will be resigning from my position, effective immediately. I am writing to inform you of my resignation from the Marketing Assistant position at Company A. Today will be my last day of work.