Every appointment and promotion to a position in the competitive or labor class shall be for a probationary period of one year unless otherwise set forth. A resignation letter should be written at least 30 days prior to the effective date of resignation.You write a letter to the Sheriff or chief of police stating your intentions to resign and send it through the chain of command. Submit a signed letter of resignation to your immediate supervisor, with a copy to your Human Resources Director. Reason for Resignation: INSTRUCTIONS. Employee–Complete Section I and forward to your supervisor. "Police Commissioner Jessica S. Tisch accepted the resignation of Chief of Department Jeffrey Maddrey Friday night, effective immediately. Resignation of local public officers are usually made to the municipal clerk. • Have an effective date of no more than 30 days (except for an effective date of. Click below for up-to-date forms and documents for use in submitting address or name changes, W4 forms for adjusting withholding status when needed.