Use one of our resignation letter templates. Learn how to write a professional two weeks notice letter with our easytouse template.This manual is designed to assist hiring managers with appropriate hiring processes and Human Resources practices. This guide provides 20 professional 2week notice templates that are easy to personalize in Word. Each template has a different tone and style. By Brad Nakase, Attorney. A two weeks' notice letter of resignation is a professional courtesy and at times a contractual obligation. Here's how to let your boss know you're leaving. I am writing to inform you of my two weeks notice. Effective August 18th will be my last day.