In this article, we explain how to construct a formal resignation letter as well as provide an example to help you write your own. Employees are encouraged to provide their supervisor with a minimum of two weeks' notice of their intention to separate from City employment.Name and position: State your full name and the exact board seat you're vacating. A. An employee will notify his or her supervisor at least two weeks prior to the date he or she intends to separate from employment with the City. Write the letter and be general. Eg, "It's time for a change. Resignation Letter Sample. Directors to tender his resignation to the RCHC Board of Directors. A new Chairman shall be named in a separate motion. Two North Riverside Plaza.