Childbirth "in a broad sense also includes the processes of conception, childbirth and postpartum breastfeeding. At the same time, influenced by social and cultural concepts, women are given much of the responsibility of raising their children. For most families who give birth, breastfeeding is a significant part of the family's unpaid work, so for a long time women will find it difficult to invest in as many jobs as men. Physically and in the family. Age Time and Energy for Responsibility In this sense, punishment fertility can also be understood as a game problem between unpaid and paid work in the distribution of time. More in the limited energy-utility function. The more important unpaid work is, the more likely it is to be punished by birth.