They list “Average labor hours per worker per year”
while it should be “Average labor hours per 1000 citizens per year”.
This way, if more people are employed (for example younger/older people working additional part-time), the average doesn’t go down, but up.
Also, it makes it easier to compare to historical data.
For example, in 1970, workers might have worked just as many hours as today, but actual workload per citizens has roughly doubled because the number of workers per citizen has roughly doubled (women going to work). So in total, while in 1970, one partner would have stayed home to do householding stuff, now both partners go to work and then have to split the housekeeping stuff between them, which makes their stress levels go up.
They make the same structural error as everyone:
They list “Average labor hours per worker per year”
while it should be “Average labor hours per 1000 citizens per year”.
This way, if more people are employed (for example younger/older people working additional part-time), the average doesn’t go down, but up.
Also, it makes it easier to compare to historical data.
For example, in 1970, workers might have worked just as many hours as today, but actual workload per citizens has roughly doubled because the number of workers per citizen has roughly doubled (women going to work). So in total, while in 1970, one partner would have stayed home to do householding stuff, now both partners go to work and then have to split the housekeeping stuff between them, which makes their stress levels go up.