Think about it this way: if you were leaving a job, wouldn't you want to receive a touching farewell message from one of your closest work colleagues? In general, it's the thought that counts ...

If you're a supervisor and one of your employees is leaving, try one of these office farewell messages ... Bureau of Labor ...

You may opt to write a handwritten letter to ... writing your farewell email, don't go into any negative reasons you are leaving the company or speak badly about your co-workers or superiors.