Deadbeat parent is a term referring to obligor parent

Parent

A parent is a caretaker of the offspring in their own species. In humans, a parent is of a child . Children can have one or more parents, but they must have two biological parents. Biological parents consist of the male who sired the child and the female who gave birth to the child...

s of either gender that have freely chosen not to be a financially supportive parent in their children's lives. Primarily used in the US and Canada, the gender-specific deadbeat dad and deadbeat mom are commonly used by the child support

Child support

In family law and public policy, child support is an ongoing, periodic payment made by a parent for the financial benefit of a child following the end of a marriage or other relationship...

 agency to refer to men and women who have fathered or mothered a child and willingly fail to pay child support ordered by a family law

Family law

Family law is an area of the law that deals with family-related issues and domestic relations including:*the nature of marriage, civil unions, and domestic partnerships;...

 court or statutory agency such as the Child Support Agency

Child Support Agency

The Child Support Agency is a delivery arm of the Child Maintenance and Enforcement Commission in Great Britain and the Department for Social Development in Northern Ireland...

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According to the US Census Bureau, 47.3% of custodial mothers (as "obligees") received all child support that they were owed and 77.5% received some.