Department of Commerce. All items, one (1) through seven, (7) must be included in the body of the letter of resignation.Learn how to write a professional resignation letter with our step-by-step guide, easy to use templates and helpful tips. Download Utah Two Weeks Notice Letter template, modify and send for signing using BoloForms Signature. In the body of the letter, immediately state your intention to resign and provide your reasoning, including only positive feelings towards your work experience. A: A letter of resignation should include the date, a formal salutation, a statement of resignation, the date of the last day of work, and a polite closing.