Fill out the form on this page to get a free editable Google Docs template with sample teacher resignation letters to help you compose your own. Below is a sample union resignation letter.Send the original to the union, send a copy to your employer, and save a copy for your files. Non-Licensed employees voluntarily terminating their employment should submit notice of their intentions at least two (2) weeks prior to their final workday. The letter resigns from the position of English teacher at the school.