I think you are wrong if you think the EU cares about worker's rights
I also think labour have been a disgrace over the last few years which has led it's more traditional voters who have been effected by issues the current Labour Party are too scared to talk to turn to UKIP
If it's not infighting, being Tory Light or now some cool North London left-wing club, is it any wonder people have looked elsewhere? Immigration is an issue, a big one, Labour don't what to touch it. They should
And I'm not disagreeing with a lot of that, but I do disagree with the EU not caring about workers rights. It's pretty sad I know that I trust the EU much more on this subject than the Tories.