Your letter should formally acknowledge the employee's resignation, confirm their last day of employment and wish them the best. A sample form to document an employee's verbal resignation.Use one of our resignation letter templates. Why should I write a resignation letter? Resignation letters are professional courtesies that extend your professionalism, even in the last. Why should I write a resignation letter? Resignation letters are professional courtesies that extend your professionalism, even in the last. Below is an alphabetical listing of all Human Resources forms available online. We write today to respectfully request your immediate resignation as president of the University of San Diego. When you want to quit, do you have to give a warning before turning in a resignation letter?