A director should submit a written resignation letter that notes the effective date of their departure. The Great Resignation is a double whammy for employers.A vacancy or vacancies on the Board shall exist on the occurrence of the following: (a) the death or resignation of any director, (b) the. The Contra Costa Water District Board of Directors and staff are extremely saddened to hear of Bette Boatmun's passing. 1. Enter the date on the letter.