i'd guess it is a union thing...
found this: http://www.nfwm.org/help/gallomain.shtml
Unions attempt to control business by unity in boycotting, strikes, etc........
This is why there is always a push for unions to consolidate such as with the AFL CIO.
Have you ever payed attention to the universal union logo.
It's a globe with a check mark and the words Vote Yes for Unions.
This ultimately is a global effort. Check out the site Socialist Democrats USA
http://www.dsausa.org/dsa.html