The World's Hardest Working Countries - Shift Ranking of May 1605/16/2014May 16, 20141. Mexiko (2226 hours worked per year) / 2. Korea (2163 hours) / 3. Greece (2034 hours) / 4. Chile (2029 hours) / 5. Poland (1929 hours) / Source: OECDCopy linkAdvertisement