Write the date first. Use this resignation letter example to inform your employer that you need to resign immediately and will not be able to give two weeks' notice.I will go over a step-by-step resignation template letter you can use, how to structure it and provide examples of resignation letters. Start with a two weeks notice letter. This will serve as a formal, written documentation of your intent to leave and your transition timeline. Learn how to write a short notice resignation letter with this stepbystep guide, template and examples of formal resignation.