I think the last problem is commonly called "procrastination" and different from workaholism & doing busywork like creating needless meetings, reports, etc.
True, it's different. My point was people could be achieving little during the daytime and feel compelled to work during the night and hence, be very busy. The work schedule might look like 12 hours/day but in actual terms, the real work only occupied 3-4 hours.