Below you'll find a sample resignation letter informing the employer that the employee is resigning due to a new job opportunity. In this article, we share tips for writing a short, simple resignation letter and offer examples for you to reference when creating your own.Professional resignation letter examples for different reasons. Free templates and writing guide to resign on a positive note without feeling awkward. If you're planning to quit your job here is the compilation of the best resignation letter samples to help you easily draft your resignation letter. Formal Resignation Letter Sample. Time for a new challenge? Learn how to write a resignation letter that's polite and professional. I have accepted a new opportunity that aligns with my career goals. Is it permissible to resign immediately after joining a new job?