[creaturecat]

A major(productivity) obstacle is the lack of re-investment by corporations: tooling, machinery, etc. This is one of the reasons for lack of national productivity. Profit taking.
Outsourcing? Not necessarily union/non-union. Simply cost reduction. Profit taking.
Dividing people into productive non-union vs non-productive union? The oldest trick in the book, isn't it?

I maintain that this thread proves the need for workplace protection. Via unions.
Union people less happy than non-union people? Simplistic. I would like to see the factor analysis used for that study.
Union people less inclined to report workplace safety issues? Maybe the workplace is safer in the first place.
Competitors stealing(stealing=offering a better work package?) valued employees? The unions fault. How does that work?
They steal the "valuable" ones, and you are stuck with the less-valuable? They are from the same unionized pool. Some are valuable, some not so much. Just like non-union employees.