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.Learn how to write a resignational letter if you're quitting for personal reasons. In the body of the letter, immediately state your intention to resign and provide your reasoning, including only positive feelings towards your work experience. 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. (For example, "I regret to inform you that I will be resigning from my position, effective immediately. With deep regret, I am writing to inform you that I am resigning from my position as sales manager for personal reasons. A resignation letter form is a tool for employees who want to leave their current position for a new one. An example letter to an employee from the employer terminating employment for cause.