http://groups.csail.mit.edu/mac/users/r ... kweek.html
13th century - Adult male peasant, U.K.: 1620 hours
14th century - Casual laborer, U.K.: 1440 hours
Middle ages - English worker: 2309 hours
1400-1600 - Farmer-miner, adult male, U.K.: 1980 hours
1850 - Average worker, U.S.: 3150-3650 hours
1988 - Manufacturing workers, U.K.: 1856 hours