This guide will provide you with helpful tips and advice on how to write a clear and concise resignation letter. Employee Name: Employee No.: Effective Close of Business., I am separating from the City of Houston for the following reason(s):. Basic Resignation Letter Sample. In this article, we share tips for writing a short, simple resignation letter and offer examples for you to reference when creating your own. For those in more traditionally professional fields such as law, finance or politics a formal resignation letter may be more appropriate. Complete a resignation form. They should be written in a respectful and professional tone, and be submitted directly to the employee's supervisor or manager. Proper documentation in the terminating employee's personnel file.