China must boost its productivity if it hopes to achieve sustainable growth in the face of rising labor costs in the long term, as the country approaches what economists refer to as a "Lewis Turning Point", the global business advisers Ernst & Young LLP said on Tuesday.
The average labor cost in China has nearly doubled in the past five years, going from less than 25,000 yuan ($3,960) a year at the beginning of 2007 to more than 40,000 yuan a year in 2011, E&Y showed in a new report.
"Wages have been pushed up by long-term decline in the aggregate labor force, combined with a rapid depletion in rural surplus labor, which has until recently provided an ultimate source of cheap labor," said the report.
But it warned that the massive reallocation of labor "from low productivity agriculture to higher productivity manufacturing is coming to an end".
Even before the Chinese economy started to turn down, there were concerns that it was facing a middle income trap, widely identified by economists as showing the danger of a Lewis Turning Point - a phenomenon identified by the economist Arthur Lewis in the 1970s from research done on the economic history of Japan, which showed that rapid urbanization led to a growth in manufacturing, which in turn brought faster economic expansion, as has been seen in China.
However, eventually, the phenomenon comes to an end as wages rise and the country's competitive edge disappears, says the Lewis idea.
The latest E&Y report said the number of migrant workers in China has been increasing at a slower pace since 2005.
It added that although there are 320 million laborers still in agriculture, only 20 million have the potential to migrate to cities, pushing the country to a point at which "the excess labor in the subsistence sector is fully absorbed into the modern sector, and where further capital accumulation begins to increase wages" - pointing to a classic Lewis scenario.
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