Can't answer your question specifically but as it happens, I experienced a bonding problem last year. The situation threatened to turn into a very expensive one (full amount in spite of the contract), so I decided to contact BALPA.
Cost me nothing and the legal service department handled the matter without further involvment from my misinformed and ignorant self.
Our action proved successful, my advice is now, not to hesitate to ask them directly. Don't do what I did, don't wait to get an informed answer from the people who really know. I thought I would be able to reason with my employer (always considered him as a fair boss) but if I had acted as soon as I should have, I would not have found myself unemployed and my career, would have been,by now, a very well secured one.
