For many employees, a job is a place they go because they have to. They have to pay the bills. They have to get in by 8, work 8 hours, and leave by 5. They have to report to their boss because he has to report to his boss who has to report to... you get the idea.
If your employees are spending well over a third of their time doing things simply because they have to, it should come as no surprise if they seem, well, a little less than motivated.
I noticed this was happening at my company. Our top-down hierarchy only reinforced the problem. Employees were working in silos, instead of collectively, because they couldn't really see how and where they fit into the overarching goals of the business. They completed tasks simply because they had to. I realized that the managers, execs, department heads, etc. were getting in the way.