I forgot to answer your original question for my job now. I subtracted my lunch break because that is how my handbook and payroll have it. So I am here 40 hours 9-5, with 5 days of a half hour lunch, so it is 37.5 of working hours.
I suppose I could say 40, but some jobs say 40 in their job posting for example, but they work 9 hours 8:30-5:30 for example with an hour break to make it 40.
Hourly staff here are not supposed to eat at their desk or having working lunches. That only works if they are salary. Our director has most people hourly for their protection except department heads. The law in our state or maybe it is federal is that they have to get a 30 minute lunch if they work more than 7 hours in a day. And the lunch break cannot be longer than after the 5th hour. Like you can't take your lunch break at 4:30pm when working 9-5. And our HR associate also let us know we cannot talk about work at all on lunch or it would be counted as working hours.
It depends on the company and industry here. I used to be a manager in public accounting and I had to meet a yearly charge hour budget. As long as I was meeting it, my hours were very flexible so I might work 60-70 hours during tax season but only 32 in summer. I think my average weekly hours for the year was in the 45 hours range. They did offer reduced charge hour budgets for parents but it also came with a significant pay cut.
I'm in a director/manager role for a private company now and I typically work 7:30-4:30 with a 1 hour lunch if I take it. I often don't end up taking it because I need to catch up on emails or flex time from doctor appointments, kid things, etc. For what it's worth, in my mind it's 45 hours per week but it's really closer to 40.