In whatever notice you provide, be sure to indicate when your resignation is effectivewhether immediately, or on a certain date in the future. A short resignation letter is the way to go.Include your name, position, the date of resignation and the intended last day of work in the first paragraph. As of close of business on April 10, 2023 I would like to announce my resignation from the Board of Alpine 4. This is a very difficult letter for me to write. As a general rule, a company's constitution will deal with resignations and removal of directors, as well as the procedures for filling casual vacancies. Dear Alpine 4 Board of Directors,. As of close of business on April 10, 2023 I would like to announce my resignation from the Board of Alpine 4. The company must then update ASIC to reflect the change in directorship within 28 days of the resignation. PHOENIX Arizona Gov.