I live in the UK and cant think of any significant industrial action in the past 3 years, the unions have moved their focus from traditional industries and commerce to the public sector workers.
The EU is a socialist utopia with faceless leaders issuing demands of the people to feed its political ambitions, the unions of course are all for this as they benefit from socialist or pseudo socialist governments. The unions in the UK benefit to the tune of £millions every year.
I personally do not trust unions while their leaders get huge amounts of money sometime 10 times the average wage for telling others to strike and lose much needed wages while they continue to dine at the top table. Orwell's Animal Farm comes to mind.
Unions represent a political ideal not its membership.