Division of labour

The process or result of "[b]reaking down jobs into fewer tasks so that each worker can become more of a specialist. The intent is to increase efficiency through job specialization."
(Termium, Division of labour, visited 2010-06-07)

"In the same way that the division of labor (specialization) within a single closed economy increases the standard of living of all its residents, the international division of labor (specialization among nations) increases the standard of living of all countries."
(Chacholiades, M., International Economics, McGraw-Hill, New York, 1990, p. 4)