Labor spying is most typically used by companies or their agents, and such activity often complements union busting.

Officials at the guild argued that those demands were the equivalent of union busting.

Although this is legal it could be viewed as union busting.

Were you against the union busting that happened in Wisconsin and elsewhere in the last year?

Brooks said that he would have to take the owners at their word when they denounced the notion of union busting.

"It has to do with union busting, plain and simple."

"Medicaid is supposed to go for health care, not for union busting."

The last chapter of Levitt's book contradicts that "need" didn't drive him to leave union busting.

Although legal, it is viewed by labor organizations as union busting.

Also in the 1970s, the Department of Defense partially financed union busting by its contractors.