Originally Posted by Baraka_Guru

Ethically, you shouldn't delete them if others use them as resources to help them do their jobs. You should never burn your bridges in business because you never know who might hire you or give you a reference down the road. Hindering others from doing their job is never the right thing to do unless there is a legal or moral issue at stake. Deleting documents out of spite, I would say, is generally unethical.