From Wikipedia:
British anti-bully researchers Andrea Adams and Tim Field have used the expression "workplace bullying" instead of what Leymann called "mobbing" in a workplace context. They identify mobbing as a particular type of bullying that is not as apparent as most, defining it as "an emotional assault.
It begins when an individual becomes the target of disrespectful and harmful behavior. Through innuendo, rumors, and public discrediting, a hostile environment is created in which one individual gathers others to willingly, or unwillingly, participate in continuous malevolent actions to force a person out of the workplace."
- But this is a hostile working environment!” And so it is, but it isn’t necessarily against the law. To management, it is “progressive discipline”: every act of the employee that could possibly be treated as malfeasance, misfeasance or nonfeasance is documented and treated as cumulative. To the employee, it is unfair, demoralizing and counterproductive, but except for “hostile working environment,” employees have not had a single word like “discrimination” to express the concept. Now several writers have put a name on the concept, and have called it “mobbing.”
This specific form of harassment identified in Europe as "mobbing", is it the same in the UK and the US?
Edit: there is a hint at "mobbing" in an answer to This question on The Workplace