NATURAL UNEMPLOYMENT: The combination of frictional and structural unemployment that persists in an efficient, expanding economy when labor and resource markets are in equilibrium. Natural unemployment exists when the economy is at full employment, which for practical purposes is defined as the condition in which the quantity of resources demanded is equal to the quantity of resources supplied. Most important for policy purposes, natural employment exists with stable prices, that is, no inflation. See also | frictional unemployment | structural unemployment | full employment | inflation | unemployment | natural unemployment rate | long-run aggregate supply |