Complete and include this form with your paper submission. This form will not be made part of the filed document.Collect a completed Leaving Office Statement of Economic Interest, if applicable, and an Unemployment Insurance Separation Questionnaire prior to departure of. This form is filed only in the Sacramento office. In this article, we share tips for writing a short, simple resignation letter and offer examples for you to reference when creating your own. Learn how to write a professional resignation letter with our step-by-step guide, easy to use templates and helpful tips. Human Resources documents and resources. Be submitted in addition to the standard application form. A simple resignation letter format includes a resignation statement, an appropriate notice period, and an expression of gratitude.