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Which is why every major new automobile factory has been built in "right to work" states for last generation?
Its pretty likely that Toyota will be going union before long since they’ve been negotiating back and forth with the unions for a while now.
You won’t find a Ford, Chrysler, or GM plant that isn’t unionized in this country. In fact there isn’t a car made in this country that isn’t full of union made parts. I worked in a union shop that produced primarily parts for Cadillac and Ford but I also made Toyota parts on occasion.
The big Boeing fight in Washington state is a fight with one particular union but most of their union suppliers are unaffected. My cousin works on a Boeing contract in a UAW shop here in Michigan.
http://www.uaw.org/page/general-motors
The last shop I worked in I had worked for many years before when it wasn’t unionized. When I became a foreman during my second employment there I asked the general manager about the circumstances that had brought the union in. He said the company (Collins and Aikman) had invited the union in. In part it was a means of heading off the UAW attempt to unionize and the AFL-CIO had been willing to negotiate a better deal. He said it also cut down on tons of paperwork kind of like hiring through a temp service.
The manager also pointed out that 300 employees could produce a lot of grievances and it was easier to deal with a union steward once a week rather than having people lined up outside HR every day.