This feels a little contrived. I work for an organisation with trade union representation and yes there is an agreed pay structure in place. This doesn't preven

This feels a little contrived. I work for an organisation with trade union representation and yes there is an agreed pay structure in place. This doesn't prevent management identifying particularly critical people and those people being rewarded/incentivised outside the norms of the pay scales (I am one of these people). Sometimes specific cases are discussed in the management/union meetings but not often and even then it's just a matter of management saying "Yeah that guy is the world's greatest widget engineer if he leaves we're screwed so we created a new job to keep him here". It doesn't really go beyond that unless it's perceived that management are routinely violating the spirit of agreements and/or when the relationship between the union and management has already completely broken down.