One is that Germans (and Britons) actually have higher proportions of household debt, as measured by GDP, than do Greeks (and Italians). See the chart below.
The other is that Greeks actually work longer hours than Germans. In fact, among OECD countries, they put in more time than anybody but Koreans and work 17.5 weeks (or 690 hours) more than Germans. The Germans, however, are in good company, with the Dutch, Norwegians and French.
As for Canadians, we work five hours less per year than do Australians – and about 65 hours less than Americans. The interactive map from the OECD is here.