Employees are encouraged to provide their supervisor with a minimum of two weeks' notice of their intention to separate from City employment. A letter of resignation should be submitted at least two weeks prior to termination of employment.Learn how to write a professional two weeks notice letter with our easytouse template. 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. There is no such law requiring employees to give two weeks' notice before quitting, there are exceptions to this. A letter of resignation should be submitted at least two weeks prior to termination of employment. What should be included in a twoweek notice letter? Week notice or longer is preferred; but is not required. Rolling one out every 2 weeks.