@leadegroot: Google operates in many European countries and does business across the continent. Google Ireland is just one of their operations. Google in Switzerland is also a huge operation and I know of Google offices and job postings in other European countries like Germany, France, Poland. Look at the list of countries they have job postings in: [google.pl...]
Either way, if Google wants to do business with the world, they're going to have to follow the laws of the countries they do business in.