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. One (1) Week Notice Letter – is written notification provided to an employer that an employee will no longer be working with the company within seven (7) days.Writing a resignation letter with notice period? Find samples for different situations (like career change, family reasons, etc.) and expert tips here. Learn how to write a resignation letter with a notice period. Learn how to write a 30day resignation letter. Read key tips for crafting a respectful notice for maintaining professional relationships. Download a free immediate effect resignation letter template, easily customizable for your personal situation. Use one of our resignation letter templates. Looking to resign with a 90 Days Notice Resignation Letter?