In my point of view, there's nothing unfair about this. The gravekeeper is alive in this world even though he has to stand constantly; but he can enjoy the scenic surroundings of the cemetery, he can breath the fresh air of nature, he can work with his hands to create wealth for his life. As for the deceased, he will never see the warm sun but turn to dust eventually. So, it doesn't matter if you are hardworking or lazy, please cherish your life.