You want to give at least a two weeks' notice. Employees are encouraged to provide their supervisor with a minimum of two weeks' notice of their intention to separate from City employment.Learn how to write a resignation letter with a notice period. This article teaches you how to write a resignation email with the help of resignation letter email examples and our resignation email template. I regretfully have to inform you that, after much thought, I have decided to resign and please accept this letter as a formal notice of my resignation. 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. The only required elements are 'I resign' and an effective date (such as two weeks notice). Looking to resign from your job? Learn how to write a professional and respectful two weeks' notice email with our helpful templates and tips. Sample of resignation letter verbiage: Dear ______.