Mechanization, Task Assignment, and Inequality

Yuki, Kazuhiro (2016): Mechanization, Task Assignment, and Inequality.

Abstract

Mechanization (or automation) - the replacement by machines of humans (and animals) engaged in production tasks- has proceeded continuously since the Industrial Revolution and seems to have accelerated recently due to the rapid advancement of information technology. This paper examines interactions among long-run trends of mechanization, shifts of tasks humans perform, and earnings levels and inequality. Specifically, the paper develops a Ricardian model of task assignment and analyzes how improvements of productivities of machines and an increase in the relative supply of skilled workers affect task assignment (which factor performs which task), earnings levels and inequality, and aggregate output. The model succeeds in capturing the great majority of the long-run trends. The paper also explores possible future trends of the variables when information technology continues to grow rapidly.

• Item Type: MPRA Paper
• Language: English
• Keywords: mechanization, automation, task assignment, earnings inequality, information technology
• Subjects: J - Labor and Demographic Economics > J2 - Demand and Supply of Labor > J24 - Human Capital ; Skills ; Occupational Choice ; Labor Productivity; J - Labor and Demographic Economics > J3 - Wages, Compensation, and Labor Costs > J31 - Wage Level and Structure ; Wage Differentials; N - Economic History > N3 - Labor and Consumers, Demography, Education, Health, Welfare, Income, Wealth, Religion, and Philanthropy > N30 - General, International, or Comparative; O - Economic Development, Innovation, Technological Change, and Growth > O1 - Economic Development > O14 - Industrialization ; Manufacturing and Service Industries ; Choice of Technology; O - Economic Development, Innovation, Technological Change, and Growth > O3 - Innovation ; Research and Development ; Technological Change ; Intellectual Property Rights > O33 - Technological Change: Choices and Consequences ; Diffusion Processes

References

Acemoglu, D. (2010), "When does Labor Scarcity Encourage Innovation?," Journal of Political Economy 118 (6), 1037-1078.

Acemoglu, D. and D. Autor (2011), "Skills, Tasks and Technologies: Implications for Employment and Earnings," in O. Ashenfelter and D. Card, eds., Handbook of Labor Economics Volume IV, Part B, Amsterdam: Elsevier, Chapter 12, 1043-1171.

Acemoglu, D. and P. Restrepo (2016), "The Race Between Machine and Man: Implications of Technology for Growth, Factor Shares and Employment," NBER Working Paper No. 22252.

Acemoglu, D. and F. Zilibotti (2001), "Productivity Differences," Quarterly Journal of Economics 116, 563-606.

Alvaredo, F., A. B. Atkinson, T. Piketty, and E. Saez (2013), "The Top 1 Percent in International and Historical Perspective," Journal of Economic Perspectives 27(3), 3-20.

Autor, D. (2015), "Why Are There Still So Many Jobs? The History and Future of Workplace Automation," Journal of Economic Perspectives 29(3), 3-30.

Autor, D., F. Levy and R. Murnane (2002), "Upstairs, Downstairs: Computers and Skills on Two Floors of a Large Bank," Industrial and Labor Relations Review 55 (3), 432-447.

Autor, D., F. Levy and R. Murnane (2003), "The Skill Content of Recent Technological Change: An Empirical Exploration," Quarterly Journal of Economics 116 (4).

Bartel, A., C. Ichniowski, and K. Shaw (2007), "How Does Information Technology Affect Productivity? Plant-Level Comparisons of Product Innovation, Process Improvement, and Worker Skills," Quarterly Journal of Economics 122(4), 1721-1758.

Beaudry, P., D. Green, and B. Sand (2016), "The Great Reversal in the Demand for Skill and Cognitive Tasks," Journal of Labor Economics 34(S1), S199-S247.

Bentolila, S., and G. Saint-Paul (2003), "Explaining Movements in the Labor Share," Contributions in Macroeconomics 3 (1), 251-334.

Böhm, M. J. (2015), "The Price of Polarization: Estimating Task Prices under Routine-Biased Technical Change," mimeo.

Boldrin, M. and Levine, D. K. (2002), "Factor Saving Innovation," Journal of Economic Theory 105 (1), 18--41.

Costinot, A. and J. Vogel (2010), "Matching and Inequality in the World Economy," Journal of Political Economy 118 (4), 747-786.

Ebenstein, A., Harrison, A., McMillan, M. and Phillips, S. (2014), "Estimating the impact of trade and offshoring on American workers using the current population surveys," Review of Economics and Statistics 96(4), 581-95.

Feinstein, C. H. (1998), "Pessimism Perpetuated: Real Wages and the Standard of Living in Britain during and after the Industrial Revolution," Journal of Economic History 58(3), 625-658.

Firpo, S., N. Fortin, and T. Lemieux (2013), "Occupational Tasks and Changes in the Wage Structure," mimeo, University of British Columbia.

Givon, D. (2006), "Factor Replacement versus Factor Substitution, Mechanization and Asymptotic Harrod Neutrality," mimeo, Hebrew University.

Garicano, L. and E. Rossi-Hansberg (2006), "Organization and Inequality in a Knowledge Economy," Quarterly Journal of Economics 121 (4), 1383-1435.

Goldin, C. and L. F. Katz (1998), "The Origins of Technology-Skill Complementarity," Quarterly Journal of Economics, 113 (3), 693-732.

Goldin, C. and L. Katz (2008), The Race between Education and Technology, Cambridge: Harvard University Press.

Goos, M., A. Manning, and A. Salomons (2014), "Explaining Job Polarization: Routine-Biased Technological Change and Offshoring," American Economic Review 104(8), 2509-2526.

Grossman, G. M. and E. Rossi-Hansberg (2008), "Trading Tasks: A Simple Theory of Offshoring," American Economic Review 98 (5), 1978-97.

Grossman, G. M., E. Helpman, and P. Kircher (2015), "Matching, Sorting, and the Distributional Effects of International Trade," mimeo.

Katz, L. and R. Margo (2013), "Technical Change and the Relative Demand for Skilled Labor: The United States in Historical Perspective," NBER Working Paper No. 18752.

Landes, D. (2003), The Unbound Prometheus: Technical Change and Industrial Development in Western Europe from 1750 to the Present (2nd ed.), New York: Cambridge University Press.

Mokyr, J. ed. (1985), The Economics of the Industrial Revolution, Totowa, N.J.: Rowman and Allanheld.

Mokyr, J. (1999), "The Second Industrial Revolution, 1870-1914" in V. Castronovo, ed., Storia dell'economia Mondiale, Rome: Laterza Publishing, pp. 219-245.

Nakamura, Hideki and Masakatsu Nakamura (2015) "Mechanization in a Production Function," mimeo.

Naticchioni, P., Massari, R., and G. Ragusa (2014), "Unconditional and Conditional Wage Polarization in Europe," IZA Discussion Paper No. 8465.

Neiman, B. (2013), "The Global Decline of the Labor Share," Quarterly Journal of Economics 129(1), 61-103.

OECD (2008), Growing Unequal? Income Distribution and Poverty in OECD Countries, Paris: OECD.

Peretto, P. and J. Seater (2013), "Factor-Eliminating Technical Change," Journal of Monetary Economics 60(4), 459-473.

Sampson, T. (2016), "Assignment Reversals: Trade, Skill Allocation and Wage Inequality," Journal of Economic Theory 163, 365-409.

Sattinger, M. (1993), "Assignment Models of the Distribution of Earnings," Journal of Economic Literature 31, 831-80.

Zeira, J. (1998), "Workers, Machines, and Economic Growth," Quarterly Journal of Economics 113, 1091-1117.

Zeira, J. (2010), "Machines as Engines of Growth," mimeo, Hebrew University.

Zuleta, H. (2008), "Factor Saving Innovations and Factors Income Shares," Review of Economic Dynamics 11, 836-851.