Staff who voluntarily terminate must submit a letter of resignation to their immediate supervisor with a copy to Human Resources. Include the position title and the last day you intend to work.A resignation letter should be written at least 30 days prior to the effective date of resignation. RE: Notice of Resignation from Employment at Lee College. Dear ,. An effective resignation letter includes your name, your job title and your departure date. The letter can be 2-3 sentences. Just say you are resigning with the effective date. Submit the Withdrawal of Resignation form with a copy of your nomination letter to Field Services.