Professional Resignation Letter is a formal written notice announcing intention to leave a job. I submitted my resignation letter two weeks ago.Say your farewell with a simple "Sincerely," "Cordially," "All my best" or the like, and add your typed name at the bottom. Submit your resignation letter A statement of your resignation. The date of your last day of employment. It is usually best to simply state that you are tendering your resignation and that it is effective as of the current date.