A certain group of Cargolux pilots, whether or not they belong to the ALPL, undercuts representation and collective bargaining by making themselves available for work (selling OFF and/or VAC days during the actual period of “work to rule“) thus effectively lessening its power as a bargaining tool.
Unfortunately CLX management can rely on a large pool of this kind of characters at their disposal. (And this by the way is how CLX plans to crew 3 more aircraft without hiring more pilots.)