I cant find the quote,
but a company sued a newspaper for a report that it was under investigation by the X office and this report affected share price
I would make sure it is untrue - the employer doesnt not wish to face a charge of "trading whilst insolvent" and the ex-employee offering to a be witness that 'oo yes, everyone knew .... '
try this:
http://www.compactlaw.co.uk/free-legal-information/employment-law/employees-obligations-to-employer.html
I was hoping to find that one of the employees beneficent duties is not to *** off his employer - but I can't
Recent examples of employers chasing their employees over face book pages of 'I hate my job'