If they want to do more than their fair share of the necessary work, they are either just dumb or altruistic and should feel free to go for it. If they want to

If they want to do more than their fair share of the necessary work, they are either just dumb or altruistic and should feel free to go for it. If they want to do less than their fair share of the necessary work, they are either just lazy or actively trying to exploit the others and should be punished by them. Everything other than fairly sharing necessary work seems suboptimal to me, either for individuals or for the society as a whole.