How to Use Two Weeks Notice Letter? Learn how to write a professional two weeks notice letter with our step-by-step guide.Expert tips, mistakes to avoid, and templates. In this article, we explain how to write a twoweek notice letter and we provide templates, tips and examples to help you get started. A two weeks notice letter is vital for maintaining professionalism, ensuring smooth transitions, securing future references, and legal compliance. Two weeks is a professional courtesy and just the common expectation. It's really up to you how much notice you feel is reasonable to give. Start with a two weeks notice letter. This will serve as a formal, written documentation of your intent to leave and your transition timeline. A two (2) weeks notice resignation letter is the most common letter used when notifying an employer of an official resignation.