The issue employers have with unions is much less about wage bargaining an almost entirely about the duplicative work/labor unions tend to lead to. As a hypothe

The issue employers have with unions is much less about wage bargaining an almost entirely about the duplicative work/labor unions tend to lead to. As a hypothetical, lets say you run a widget factory. Line workers at your widget factory spend 6 hour of their shift making widgets, and 2 hours of their shift packing widgets up after they have completed making their widgets. A union comes in and will say "we can have experts in widget making, and experts in packing, these are 2 jobs, people who make widgets do not have the expertise to pack, and people who pack do not have the expertise to make widgets. From now on, we will have 2 separate job roles, widget makers and widget packers, and a packer will never ever be able allowed to make widgets, and widget makes will never ever be allowed to pack widgets". The company, which used to have a staff of 8 people who did both tasks, will now need a staff of 8, 6 widget makers and 2 widget packers. Seems OK right? Well christmas comes around and there are too many widgets to be packed, last year all 8 people were packing widgets 8 hours per day around the christmas rush, and there wasn't much widget making to be done because after christmas is low on sales. The company needs to hire an additional 6 temporary widget packers to pack widget and the 6 widget makers will be either idle or working with reduced efficiency. This increases the companies expenses with no real value created.