You want to give at least a two weeks' notice. A two (2) weeks notice resignation letter is the most common letter used when notifying an employer of an official resignation.In this article, we explain how to write a twoweek notice letter and we provide templates, tips and examples to help you get started. Your employer probably wants a resignation letter which appropriately documents that event. There may be some potential issues. This guide provides 20 professional 2week notice templates that are easy to personalize in Word. Each template has a different tone and style. Yesterday I gave my two weeks notice along with my letter of resignation. The letter stated that my last day would be September 11th. It's customary to provide at least two weeks' notice so that your employer has time to adequately prepare for your departure.