You just have to check out his schedule on www.whitehouse.gov to see how busy he is - what time he starts his “official” day and what time he winds it up. Unless he’s campaigning, he’s meeting with others to pick THEIR brains and even then it’s not even an 8 hour day! Of course, he hasn’t discovered yet that there’s not much there to pick...
I wonder the same thing about Holder. If he’s not supervising his underlings, just WHAT is HE doing?
He typically “works” 4-5 hours max - unless he’s golfing or flying around AF1 campaigning.