That first graph stinks. It only counts job work hours worked per job worker, not work hours per person. In 1950 there were an awful lot of households with one adult working a paid job and one adult handling most of the household work. According to this graph, that one worker did 1900 hours per year plus a bit of household work, and the other adult did ??? hours of work. Now both adults are doing 1700 with the household work on top. Granted, the amount of household work has gone down, but has it really gone down by over 1500 hours per year? If not, we're working more, not less.