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Layoffs and the threat of AI: Why Irish tech workers are finally turning to unions
(www.thejournal.ie)
This is a most excellent place for technology news and articles.
It's possible to be in a union at any level as long as you don't own the company
Edit: well, there's some unions that even let them in, but less of them, and usually limit it to "only if the company has less than 500 employees and earns less than AMOUNT" (I dunno the number)