The Economic Policy Institute posted yesterday a recent study that shows literally no coercion in majority sign-up. You can read the meat of the survey here, but the graph says it all.

That's 1,073 majority sign-up campaigns with 5 complaints, 0 of which were found to have any merit.

So when the U.S. Chamber of Commerce tries its scare tactics, remember: it's corporations that coerce and intimidate workers who want to join unions. Anything else is just simply not true.