I think it is fairly safe to say that you would be charged with 'Manslaughter' if any passenger dies as a result of ATC error. You, your Competency Manager, your Watch/Unit Manager and almost certainly the Chief Exec, would all be charged. It would be up to each individual charged to prove that he/she did nothing negligent or could have put in place a procedure that would have prevented the incident. This is the assumption I have always taken each time I plug in.
See link below for an example. ATCO made an error, everyone gets done.
http://news.bbc.co.uk/1/hi/world/europe/2962962.stm