around 4 hours a day
It means 'an hour of work'. Sha'ah is hour and avodah is work.
8-hour work days
My work will be completed in an hour and a half.
an 8 hour work day
Do what you are paid to do work
8 hour
A standard hour is an hour of production which should be used doing work.
Usually one hour per hour.
60,320
It is 36.25 for the week.
No.
Overtime is work done outside your normal daily hours. If you normally work an eight hour day, but work an extra hour one day. That extra hour is overtime, and overtime is often paid at a higher rate.