Unions don't always choose what is best for everyone. My aunt and uncle were working at a unionized automotive parts factory here in Canada and the factory nee

Unions don't always choose what is best for everyone. My aunt and uncle were working at a unionized automotive parts factory here in Canada and the factory needed to reduce payroll due to lost sales. They gave the union a choice of either cutting everyone's hours (and thus wages) by 10% or of laying off 10% of the workforce. When put to a vote, the choice was to lay off the 10%. This happens because when each union member votes, they know if they are in the 10% or not as layoffs are based on seniority. It wasn't some CEO taking a shortcut, it was the individual co-workers looking out for their own (perceived) best interests. (I don't remember what the actual percentage was, but it was in the 10-20 range.)