Following a decision by Catalunya's Superior Court of Justice earlier in the year, it seems that serious verbal abuse of a more senior colleague may not always be a ground for dismissal.
The case concerned a manager who telephoned a subordínate to seek some information on a work-related matter. After five minutes, the employee concerned hung up. The manager then went to demand the information in person. The discussion descended into an argument about pay during which the employee lost his temper and called his manager "a son of a bitch" and a "swine". Unsurprisingly, he was dismissed and, after losing his first court challenge, took his claim to the Superior Court.