NATIONAL BUREAU OF ECONOMIC RESEARCH
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Industrialization without Innovation

Paula Bustos, Juan Manuel Castro-Vincenzi, Joan Monras, Jacopo Ponticelli

NBER Working Paper No. 25871
Issued in May 2019, Revised in August 2020
NBER Program(s):Development Economics, International Trade and Investment

The introduction of labor-saving technologies in agriculture can release workers who find occupation in the manufacturing sector. The traditional view is that this structural transformation process leads to economic growth. However, if workers leaving agriculture are unskilled, the labor reallocation process reinforces comparative advantage in the least skill-intensive manufacturing industries. We embed this mechanism in a multi-sector endogenous growth model where only skill-intensive manufacturing industries innovate and generate knowledge spillovers. In this setup, the increase in the relative size of the unskilled-labor intensive industries reduces the incentives to innovate and slows down growth. We test the predictions of the model in the context of a large and exogenous increase in agricultural productivity in Brazil. We use social security data to develop a new measure of the labor input in innovation which is representative at any level of spatial aggregation. We find that regions adopting the new agricultural technology experienced a reallocation of unskilled workers away from agriculture into the least R&D-intensive manufacturing industries. The expansion of low-R&D industries attracted workers away from innovative occupations in high-R&D industries, slowing down local aggregate manufacturing productivity growth.

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Document Object Identifier (DOI): 10.3386/w25871

 
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