Not only is this person always seemingly exhausted, but they're going to let you know about it every single day. They come in and the first thing they do is complain about how little sleep they got, or how tired they are as if it's an accomplishment. I find nowadays that it's almost a challenge to see who can be the most sleep deprived and still function on a day-to-day basis.

You'll mostly find this person holding a cup of coffee while trying to keep their eyes open but generally failing.