In this article, we discuss how to write a resignation letter when you're unhappy with management and we offer templates and examples you can use as a guide. Say when you are leaving, thank the company for the opportunity, and sign it.Dear (Manager's Name),. I'm writing to you today to submit my notice and resignation letter. Looking to resign with a Unfair Treatment Resignation Letter? Use our resignation letter template for reason roles. The following sample resignation letter includes details on why the employee finds conditions unsatisfactory. Learn how to write an immediate resignation letter with our comprehensive guide, including tips, examples, and a customizable template. You are also not required to list your reason(s) for quitting. Addressed to their manager, the letter provides official notice that the employee plans to leave their position.