In this article, we share tips for writing a short, simple resignation letter and offer examples for you to reference when creating your own. Formal Resignation Letter Sample.In this article, we discuss what to include in a professional resignation letter and we share examples of resignation letters you can use for reference. Use a one week notice letter template to inform your current employer that you plan to resign within seven days. Download Texas Immediate Letter Of Resignation template, modify and send for signing using BoloForms Signature. It's customary to give at least two weeks' notice unless you have a different agreement with the employer. 6. Resigning is one of the final steps in the process of accepting a new job.