Might explain this:

http://mashable.com/2014/05/30/japan-drunken-businessmen/

He's exhausted?

He's wasted.

"Maybe we need to have a little talk, Japanese office workers, because this hard-partying, drink-‘til-you-drop philosophy of yours seems to have gotten out of hand.

That’s the intervention-style message, anyway, from a series of public service announcements backed by a popular nightclub chain in Tokyo. But the ads fall squarely on the tough love end of the spectrum by using photos taken of drunken 'salarymen,' as white-collar businessmen are often called, passed out in public places."

Haha, awesome.

When it's time to party, you must party hard!