Sure.
Had some bullshit waste of time while setting up a booth at GDC because we weren't allowed to unload the boxes with our stuff, or something like that.
I was born and raised in Uruguay, and cases of people openly stealing from their workplace that couldn't be fired because the union would strike until they were reinstated were commonplace, both in the public and private sector.
Someone close to me who owns a factory, again in Uruguay, was for some time under threat from the unions, who openly tried to bankrupt the company, so that they could take ownership, due to a law that entitles them to do that.
I've seen unions impede technological progress in every sector because it threatens their jobs. Who cares if it improves the experience for the customers / citizens? They take the whole company / city hostage to get away with what they want, and/or damage the premises (https://www.elobservador.com.uy/nota/asi-quedo-la-planta-de-...). That's also why in Montevideo every bus has two people, one to drive, the other sitting next to the automatic ticket selling machine, to put your money in, and hand you the ticket it prints. Who pays for having twice the people needed in that bus? The people.
I've seen the unions used to destabilize governments of parties who weren't ideologically affiliated with the people running the unions (the extreme left).