Ugly people have one benefit above all the beautiful people in the office environment; and that is that they have no followers.People are like sheep. They flock together at the water cooler, talk about the other employees behind their backs, make fun of the boss (and that isn't funny if that boss happens to be you!) and generally follow each others behaviors. If one steals and they are really popular, you may have an office supply stealing spree going on.
Ugly people are harder workers because they are not wasting all of their time being a sheep.