Romanians are an issue, but for completely other reasons. Quite frustrating, but nothing to do with labor laws or visa in general.
But other than that I've never had or heard of any such issues here in Amsterdam. Locals are getting outnumbered in the tech-scene. The majority of my team is now non-Dutch, and not because it's cheap, because we pay well.
It's not "perception". Recent studies have shown that about half the Romanians in the Netherlands are here illegally, and most of those are criminals. And those that are here legally don't always work under legal conditions.
This royally sucks for Romanian developers that want to work here, because despite being EU members they still need a work permit. The government basically assumes that the odds of Romanians coming here with good intentions are pretty low.
But other than that I've never had or heard of any such issues here in Amsterdam. Locals are getting outnumbered in the tech-scene. The majority of my team is now non-Dutch, and not because it's cheap, because we pay well.