Increasingly not, though. The US has always lagged behind other Western countries in union membership, and although most countries have seen a decline, in the US it's been particularly severe. Perhaps worse, that decline has been much stronger in the private sector: the only places unions really have seen any even moderate victories in recent decades is either public workers or in artificial markets created by the State (such as California's homecare workers).

Culturally there's a big difference, too. While in Europe unions and corporations tolerate and even co-operate with each other (German companies have, I believe, half of their board members controlled by labor unions), in the USA they are very antagonistic.

Either because of that or causing that, most unions in the USA are effectively nominal with no real power.