The format of your resignation with a notice period should be a letter. The body of your resignation letter should clearly state your intention to resign and the date of your future departure.Ideally, you should send your resignation letter at least two weeks before your planned resignation date. Your letter of resignation should be short and professional. Linked below are templates for resignations and retirements. A public officer may resign his office at any time. Officers are advised to give at least one months notice or pay one month's salary in lieu thereof. In completing this form employees will be acknowledging in writing that their second job is subordinate to their employment with Nassau County. Please accept this letter as my formal resignation. Today will be my last day of work.