Working Time over the 20th Century Staff Working Paper 2006-18 Alexander Ueberfeldt From 1870 to 2000, the workweek length of employed persons decreased by 41 per cent in industrialized countries. Content Type(s): Staff research, Staff working papers Topic(s): Economic models, Labour markets, Productivity JEL Code(s): E, E1, E13, E2, E24, O, O1, O11