Give notice immediately and give them 3 weeks. If they want to ef around with your vacation, you can say that it's take it or leave it for you.In most cases a two-week notice is more than ample time to start the transition process. There's also the option to turn your "2 weeks notice" into a "3 weeks notice": state your intention to leave 2 weeks before your PTO starts. In this article, we explain how to write a twoweek notice letter and we provide templates, tips and examples to help you get started. This employee guide is designed to acquaint you with the City of Houston's policies and procedures and to provide you with information about our benefits. Just tell them before you leave on vacation, the whole point of 2 weeks notice is to give your former employer time to find your replacement. It's the same as if they fired you. Do not turn in your notice before you have an offer letter. The customary procedure when you decide to quit a professional job is to give your boss two weeks' notice of your departure.