BALPA are toothless
not when it comes to Couscous !
added to that, as a contractor, or as self employed, i.e., you have a company that provides labour to a carrier, BALPA cant help you anyway.
BALPA provides assistance to employees, not to third party contractor suppliers.
As for the CAA/EASA: their job as regulator/ rule maker is to ensure that air transport is safe.
indeed, their position is not employment relations.