I am writing to give my resignation from (company name), effective (date), two weeks from today. This resignation was a difficult decision to make.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. 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. Dear (Supervisor Name):. This letter is to inform you that I am resigning from my position as (job title) with (company name), effective (date). Resignation letters are professional courtesies that extend your professionalism, even in the last days of current employment. Employee's Departure Date: Clearly state the exact date when the resignation will be effective to provide the employer with a precise timeline.