I don't think that is an accurate characterization. A time use study by the Federal Reserve Bank of Boston[1] found that the time a male worker spends at the workplace decreased from 51 hours in 1965 to 40 hours in 2003. The average male in 2003 spent most of that extra time on leisure activities. That's only one study, of course, but it squares with what I have consistently heard. Another study, which I can't find right now unfortunately, looked at leisure time enjoyed at the workplace. That would be a contradictory concept in 1965, but today, many people spend an hour per day or more reading, playing games or visiting social media sites.