It’s easy to forget the former employers. It’s always good to have a letter of recommendation that you can show during your upcoming interviews. You have to ask for such testimonials whenever it’s possible. By the way, this is one of the reasons why you should be calm, serious and refrain from being offensive when you are quitting or filling in your resignation letter sample. You can also ask for letters of recommendation on Linkedin. Ask your boss to write recommendations onto your Linkedin profile.