This document discusses the historical development of concepts related to social reproduction and care work. It summarizes how economists in the 19th century began to define unpaid domestic work and caregiving as "unproductive," relegating women who performed this labor to the census category of "dependents." Over time, this gendered definition of productive versus unproductive work became embedded in economic thought and policy despite challenges from feminist scholars. The document also examines how concepts of social reproduction are important for understanding the relationship between labor and capitalism.