Are average hours worked decreasing because we have more abundance and less need to work, or are they decreasing because the distribution of work is changing?
I find it hard to accept your claim because at the start of the industrial revolution there were far fewer women in the formal labor market than there are today.
Well there were also barely any men in the formal labour market. Most people were peasants working their family farm + sharecropping on estates of the landed gentry. But that doesn't mean they weren't working hard - both sexes worked well over 3000 hours per year, to barely scrape by.
I find it hard to accept your claim because at the start of the industrial revolution there were far fewer women in the formal labor market than there are today.