Swiss bank UBS Wealth Management has released the latest figures in its working-time based index revealing how long it takes Czechs, on average, enough to by a Big Mac hamburger from the fast-food franchise McDonalds. According to the study, currently it takes the average employee in Prague a half hour to earn enough for a Big Mac hamburger, costing 75 crowns. By contrast, the average worker in Berlin earns enough to buy the sandwich in 13 minutes, and in Bratislava, in 24.