The College shall make a reasonable effort to notify the employee of the dismissal action. Employees resigning without notice are not eligible for rehire.In the opening paragraph, clearly state that you are resigning from your position. Add contact details, company name, and date. An effective resignation letter includes your name, your job title and your departure date. A resignation letter should be written at least 30 days prior to the effective date of resignation. Board of Supervisors, District 3 Vacancy Appointment Process.