Linked below are templates for resignations and retirements. Please be certain that your letter is signed, dated correctly and addressed to your administrator.In this article, we share tips for writing a short, simple resignation letter and offer examples for you to reference when creating your own. What form(s) do I need to fill out? What document(s) do I need to bring? Learn how to write a professional resignation letter with our step-by-step guide, easy to use templates and helpful tips. In completing this form employees will be acknowledging in writing that their second job is subordinate to their employment with Nassau County. Add contact details, company name, and date. It's also best practice to send your resignation letter to your employer at least two weeks before your last day at the company. • Resignation checklist.