We've rounded up tips and examples for writing a resignation letter that'll help you maintain work relationships long after leaving a company. One way to leave on good terms is to write a polite, professional resignation letter in which you thank your employer for your time at the company.Not sure how to write a resignation email? Write your resignation letter first. All you need to do is put the date of your intended departure, your name, the fact that you are resigning, the date and your signature. Thus, a resignation requires both an intent to resign and an affirmative act of relinquishment. Thank you for all of your guidance and support during my employment. For those in more traditionally professional fields such as law, finance or politics a formal resignation letter may be more appropriate. The most common one I get is, "Dear NAM! Be Concise and Clear: While expressing gratitude is important, keep the letter concise and to the point.