This resignation letter sample provides your employer with a letter for your file and also suggests that you've done everything you can to remain professional. Learn how to write a short notice resignation letter with this stepbystep guide, template and examples of formal resignation.You can quit without any notice and they can't nail your foot to the workstation. Illinois is an at-will state. Below is an example of an immediate resignation letter from an employee who needed to leave their position due to severe work-related stress. Use this resignation letter example to inform your employer that you need to resign immediately and will not be able to give two weeks' notice. Every resigning employee shall be urged to indicate in the Resignation form the reason for leaving. Use a business letter format: Since an Immediate Resignation Letter is formal, you need to use official business formatting. Looking to resign with a Resignation Letter Without Notice? Use our resignation letter template for notice-period roles.