From Raj Nallari's lecture notes on Gender and Macroeconomics.
Macroeconomics deals with aggregates, for example, the set of aggregate accounts reporting the value and breakdown of all income and all output of an economy is one starting point. Many of the services performed, as well as goods produced, by women are not included in the UN System of National Accounts (SNA), which is the standard system used by almost all countries. Four areas of work are missing or poorly accounted for in national accounts -- domestic work, volunteer work, subsistence production, and the informal sector. Both men and women are involved in all of these sectors, but the methodological issues inherent in their measurement have been most intractable in the first two, which are largely performed by women.
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