You can always join CGT [1]. They take tech workers seriously and they have presence on most tech companies. Leave the more general, "politics" side of unions

You can always join CGT [1]. They take tech workers seriously and they have presence on most tech companies. Leave the more general, "politics" side of unions (calling for general strikes, and so on) to CCOO and UGT, and make use of another union to protect you when your company tries to abuse you. Also, if you're not satisfied with what the unions do, you can always the works council. A workmate of mine is in our company's works council and she isn't even part of any union. Also, in my experience CCOO and UGT are not nearly as bad as the media paints them (again, I'm talking about what's going on at companies I've worked at). This may sound like a cliché, but really, there is an awful lot of propaganda against them because there are plenty of rich people interested in having an exploitable work force. The only real complain I have against CCOO and UGT is that they sometimes don't fight as hard as they should. But in many other cases they do. I've seen cases where these unions have successfully sued companies upon wrongful termination of workers, for example. [1] https://www.cgtinformatica.org/ https://www.cgtinformatica.org/