Looking to resign with a One Month Notice Resignation Letter? Use our resignation letter template for notice-period roles.In this article, we discuss how to create a 30day resignation letter, why it's important and provide a template and examples to help you write your own. Professional resignation letter examples for different reasons. Free templates and writing guide to resign on a positive note without feeling awkward. Within one work day, provide a copy of the constructive resignation letter to the employee's union, as authorized. 23.3 Effective Resignation. Learn how to write a resignation letter with a notice period. The health plan premium is payable one (1) month in advance.