[WS:} A problem to whom? Certainly not to the "Polish plumber." OTOH, I can see that those who fear the "Polish plumber" may see EU structures as problematic. Just as many folks on this side of the pond fear the "Hispanic day laborer" and support the immigration "reform" and fences on the south borders.
Just because something has a union or a left party boilerplate does not necessarily mean it is the right thing.
Wojtek