When I had my own shop, I would usually start work about 7:30 in the morning and if I was lucky, I usually knocked off about 6:00 PM. But owning your own business means a lot of 12 hours days !
When I worked, it was usually from about 7AM to 5PM, depending on the project that I was working on. I owned the company and usually worked Monday through Friday. My weekends were taken up by my 2nd company which I worked from home, on the computer.
When I had my video shops I started at 10 am and closed at 8 pm and got away by 8.30 pm....but as a builder I started 8-9 am and worked until I wanted to go home, probably 4 pm was average...but when working away we usually worked until seven....
My working hours are from 8am to 5pm but I'm always off a little late