I don't know how it was in your area, but in the telecom where I worked, many put in 40 or so in the office, eating lunch at your desk while the phone is on mute. Then you would go home and put in 10-25 hr/week, to do the work you couldn't get done during the day due to meetings, calls, whatever.
I was also in the telecom industry.
It seemed to me that folks in management who had much discretion as to how much and when they worked often worked longer hours than folks who had specific, mandated hours.
For example, I had direct reports in both NA and Asia and therefore worked face-to-face with the NA folks during the day and conference called/emailed/IM'd with the Asian folks in the evenings or early mornings. Somethimes there were a lot of hours involved, but it was my call. If I could have figured out how to achieve the team performance levels, make my goals, etc., with fewer hours, I was free to do so.
My NA team (primarily low and mid-level engineers) had specific hours they were expected to be in the office, typically 8:00 AM to 4:30 PM. Few were in earlier, few stayed later. Some would occassionally participate in evening conference calls with the team in Asia. Once in a while, a project deadline involved some extra hours but frequently it was because the person procrastinated getting the work done earlier. Yet, most of them wailed, moaned and cried about the "constant, forced 60 hour weeks." In reality, while some may have actually put in a 60 hr week at some time in the past, it was hardly common. Apparently, it was just fun to talk about it!
Whenever I hear folks talking about working really long hours, I'm skeptical until I know the details.
Hours you work are sometimes like calories you consume. You don't know how many until you actually write 'em down and add 'em up. For my team, when they actually wrote hours worked down, no one was even near 60 hours. In fact, some had to stretch the facts a little in order to show 40!