> Pre-induistrial workers worked less, on the average, because they were surviving

> They were working when they needed money and not working (AKA doing some other job for the house or the family, like farming or breeding cows and pigs) when they had enough to go on for maybe a week or so.

Especially they worked depending on the season. During planting or harvest they were on the fields from dawn till dusk. In winter they took care of the animals and stayed by the fire place inside.

Manufacturing work had similar cycles.

Only industrialisation brought working cycles independent from season and daylight.