A two (2) weeks notice resignation letter is the most common letter used when notifying an employer of an official resignation. Learn how to write a professional resignation letter with our step-by-step guide and easy to use templates.Add contact details, company name, and date. Craft a concise, professional resignation letter. Learn how to gracefully communicate your departure without oversharing details. When resigning for personal reasons, use the following template and examples as a starting point to write your resignation letter.