Let's stop saying "fear of unemployment" is the only reason for the working classes to vote no. Another reason might simply be that the working classes, who by sociological nature are less involved in the political process, simply don't feel the EU is being built with them, for example. I'd think the middle classes would still vote yes even under unemployment threats, for example - for them the possibility to move to another part of the EU to find work is more realistic.

Un roi sans divertissement est un homme plein de misères