Start with a two weeks notice letter. This will serve as a formal, written documentation of your intent to leave and your transition timeline.A comprehensive guide on how to write a 2week notice letter of resignation that will ensure a smooth transition for you and your employer. Employee shall send a written notification to the supervisor at least 2 weeks in advance of resignation. 2. You simply need to draft up the notice with the date you intend to end your employment. It is customary to provide two weeks notice, but check your employer's policies to see if they require more or less notice. I am writing to inform you of my decision to resign from "company" as "title" effective 2 weeks from today. My last day will be mm-dd-yyyy. When To Provide a Resignation Letter. The recommended timeline for providing a resignation letter is at least two weeks prior to your planned last day.