I'm not sure how many people know that the federal government has been doing this very broadly for a long time. Frankly, I'd rather try to contact a long-term government union employee to try to get something done (the ones who've been around long enough to know which form gets filed to get what result) rather than the know-nothing newly hired replacements who got their jobs just so that politicians could pay off their big campaign contributors.They had also been pushing long time employees out and hiring them back as independent contractors.
So that's a general description of one sort of situation where unions still do some good.