In this article, the BBC makes a link between beer drinking and the working class.
BBC News : Belgian beer gets the travel bug
Originally Posted by BBC
In short, blue collar workers drink beer after work, while white collar workers don't. The change toward less blue collar and more white collar workers correlates with the drop in beer consumption, despite strong cultural predisposition toward beer.
Belgium remains the 4th biggest consumer of beer per capita in the developed world, after Ireland, Germany and Austria. It has also the greatest variety of beers (about 800) per capita in the world, with about 80 kinds of beer per million inhabitants, against about 62.5 for Germany. 100 years ago, there were over 3000 sorts of beer in Belgium, and the number is continually decreasing.