Joao v Jurys Hotel Management UK Ltd - A person may reasonably believe the law to be what in reality it is not  EAT
It is an error of law for a tribunal to establish what the law actually is (for example, that it is lawful to require an employee to work nine consecutive night shifts), and then automatically conclude that a person could not reasonably believe it to be otherwise (and so, for example, raise a health & safety concern about it).
In February 2010 Mr Joao started a 6 month probationary period as a night porter with Jurys Hotel. He was given a rota to work whereby he would be working nine consecutive nights; he raised concerns about this with his manager questioning whether it met health & safety requirements. He was assured it was "OK". A few days later he was dismissed for gross misconduct having been given (so his dismissal letter claimed) an opportunity to improve his performance.