Staff who voluntarily terminate must submit a letter of resignation to their immediate supervisor with a copy to Human Resources. How to Write an Immediate Letter of Resignation (4 steps).How to write a resignation letter that's effective immediately? Pick the perfect wording and convey the message best suited for your situation. Use this resignation letter example to advise your employer that you are resigning because of a scheduling conflict with another position. Learn how to write a professional resignation letter due to unfair treatment. One Week Notice Letter Example. Here's an example of a resignation letter from an employee who provides one week's notice: Collin Jenkins It is after much thought that I have decided that I must submit this resignation to you. I apologize for any inconvenience this may cause.