~ UPDATE (4 May 2012) ~
Astute reader COMMENTED (below) that in US, servers receive sub-minimum wage pay & depend on “tips” to make living wage. This is not situation in any part of EU I have visited, but it is separate discussion which is perhaps confusing distraction from minimum wage topic of this post. Therefore, we have updated the page (as it will appear in final book) to include following antepenultimate panel:
Note also minimum wage in much of EU is calculated by monthly pay rate; this can lead to some confusion when talking about hourly minimum wages, but everyone we met in Eastern Slovakia seemed to calculate wages hourly instead of monthly. Some also calculated using old Slovak Koruni, which adds yet more confusion.