You want to give at least a two weeks' notice. Learn how to craft a professional resignation letter without notice with our guide.I am writing to give my resignation from (company name), effective (date), two weeks from today. This resignation was a difficult decision to make. Can't give two weeks' notice? Here's how to write a short-notice resignation letter with examples and a template included. Learn how to write a professional resignation letter with our step-by-step guide, easy to use templates and helpful tips.