The problems that people have with Big Labor come down to 3 big areas.
Seniority, union work rules and grievances.
Any business can be bogged down in this quagmire.
Seniority means that mere longevity- not competency- is what determines an employees tasks and compensation.
Union work rules freeze everything in place, making innovation extremely difficult as technology progresses. Eliminate a useless step because changes have made it redundant at best? Can't do it, as it would mean eliminating someone's job.