Franz Kafka's "Metamorphosis" this review talks about the symbolism Gregor had on his family and how he was treated by them.

Kafka's story can be identified as one of today's families. Gregor, a man who sacrificed himself working only to pay his father's debts, turns up a bug one day instead of prospering on with his life. He was not recognized by his family for the efforts he did, was taken for granted, and was expected to support the whole family never considering what his needs and wants may be. Kafka symbolizes Gregor as a bug …

…what they were suppose to do, and when their maid family member falls ill, they ignore them, and this causes the maid to go into depression and worsening which may lead into death. Unfortunately during death the family members are relieved and continue on with what they originally learned from their salve, to work. Kafka, made this assimilation with Gregor, he turned him into a bug to show a disability, because bugs cannot do anything.