We've rounded up tips and examples for writing a resignation letter that'll help you maintain work relationships long after leaving a company. Dear Sirs: Effective immediately, I am not a member of UFCW Local 99.State your resignation and provide the effective date. Download Arizona Immediate Letter Of Resignation template, modify and send for signing using BoloForms Signature. In this article, we share tips for writing a short, simple resignation letter and offer examples for you to reference when creating your own. In this article, we share tips for writing a short, simple resignation letter and offer examples for you to reference when creating your own. However, in other situations, employers can regard notice of resignation effective from the date they receive the letter.