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Money was hard to come by. Gregor is enslaved by his family because he is the one who makes money. Thus, with the possible exception of his sister, the family seems to treat him not as a member but as a source of income. When Gregor is no longer able to work after his metamorphosis, he is treated with revulsion and neglected. Once the family begins working, they also find difficulty communicating with each other, eating dinner in silence and fighting among themselves. The exhaustion of dehumanizing jobs and the recognition that people are only valuable so long as they earn a salary keeps anyone who works isolated from others and unable to establish human relations with them.