That 20% sounds about right to me. I'm much more efficient when I work from home. My commute is walking across my kitchen to my office. Lunch break is getting u

That 20% sounds about right to me. I'm much more efficient when I work from home. My commute is walking across my kitchen to my office. Lunch break is getting up to get a salad or sandwich from said kitchen. I can work an 8 hour day in 8-9 hours total including breaks for lunch etc. There is no way to do that in the Boston area where I live if I have to drive to a office. Commutes here are usually about an hour per 20 miles driven during rush hour. That makes an 8 hour work day more like 10-11 hours. So somewhere between 20% and 25% makes up the difference.