Ah yes, the creative accounting of it! The bullshit we like to buy into.
7.5 hours of official "work", 30 min lunch break with which you cant do anything, 2x 30 min commute. 9 hours gone! You need to sleep 4.5 hours to be able to do it. 13.5 hours gone! It seems like you would have 10.5 hours for yourself but there of course are the standard chores, shopping, cleaning, cooking, eating, open the mail, pay your bills, interact with friends and family. We are told (cultural) this is all totally recreational!
Can you show up at work at 8:00 sharp? I think more usual is 7:45 to start at 8:00. The 30 min commute means you have to leave at 7:15. The average morning routine is 30 to 90 min. We do this to get to work and getting up at 6:15 is rather unfunny. (Plenty of jobs start at 7:00 or even earlier)
You finish at 16:00 but before you are out of the building 15 min are gone. 16:45 you get home. Why cant I park any place? humm, its 16:55 now. You might need to shower and/or change cloths, oh its 17:30 already? Quick to the store! 2x20 min drive, 10 min strolling around, 10 min to park again. Oh its 18:30? wtf? quick do some cooking. 37 min of cooking 19:07. A short hour to eat 20:00.
And then you have to spend 2 hours not doing anything useful or you wont be fit for work the next day. (note the contradiction in terms) After 5 days of that you also really need to spend the entire weekend relaxing or you eventually wont be able to work. Of course reality wont allow for that so people still burn out.
Slaves? uhm?
https://www.youtube.com/watch?v=0oMEuyhBkRo