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. Looking to resign with a One Month Notice Resignation Letter?Use our resignation letter template for notice-period roles. Use one of our resignation letter templates. Learn how to write a resignation letter with a notice period. You can quit anytime for any reason or for no reason. If the contract says you are to give 30 days notice, and you don't, you are in violation of the contract.