Gains in productivity don't help the working class much; they mostly help the owners of companies. Those owners have no financial incentive to reduce working hours to compensate for gains in productivity when they could rather cut half their workforce and tell the remaining workers they need to work harder/longer because there is more competition for their jobs now.
Those who predicted a "leisure society" back in the 1950s obviously didn't realize Marx predicted the opposite would happen a century earlier.
Those who predicted a "leisure society" back in the 1950s obviously didn't realize Marx predicted the opposite would happen a century earlier.