If you have work that typically requires a professional staff to spend 120 per week getting the job done, you're better off hiring two employees and having them work 60-hour weeks than three employees with 40-hour weeks. You end up saving money even if you pay the two employees 50% more to compensate them for the extra time they work. For one thing, most employee benefits (sick time, vacation time, medical insurance (think about this in the context of Obamacare), etc.) are fixed costs regardless of how many hours someone works. Secondly, having two employees instead of three means you can get away with one-third less office space for the work.
Heck, I could do my job from home. I suspect we’ll see that more and more as companies try to save money on office space.