The current issue of National Geographic Magazine features an interesting one-page piece entitled "A Work-Weary World." The Organization for Economic Cooperation and Development tracked the annual hours worked around the world in 2003 and came up with some interesting findings:

• South Korea, 2,390
• Czech Republic, 1,972
• Poland, 1,956
• Greece, 1,938
• Mexico, 1,857
• Slovakia, 1,814
• Australia, 1,814
• New Zealand, 1,813
• Japan, 1,801
• Spain, 1,800
• United States, 1,792
• Hungary, 1,777
• Canada, 1,718
• Finland, 1,713
• Portugal, 1,676
• United Kingdom, 1,673
• Ireland, 1,613
• Italy, 1,591
• Sweden, 1,564
• Austria, 1,550
• Belgium, 1,542
• Denmark, 1,475
• Germany, 1,446
• France, 1,431
• Netherlands, 1,354
• Norway 1,337

While the full data set doesn't appear to be easily available online, you can access a description of the study's sources and a report on year-to-year percentage changes. Michael Boyer's report on the study indicates that "once a nation cultivates wealth, work hours tend to drop."