Avoid making negative comments. The purpose of this message is to inform you that I am resigning my position at EvilCorp.Briefly describe your experience. You can describe any negative experiences you've had that you feel are necessary to include. You can write a short and simple letter saying what you just said in your post. Don't cite chapter and verse, but don't sugarcoat your reason for leaving. Define Your Ideal Work Environment. Seeking advice on what reason to provide my work as to why I am leaving the job. The actual reason is because my manager has been hostile towards me. I am at a work environment where you are judged on how you look and not how you work.