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Economic Growth

Not Enough Shovels? The Crucial Role of Future Capital Accumulation for U.S. Output Growth

Not Enough Shovels? The Crucial Role of Future Capital Accumulation for U.S. Output Growth
  • Growth in physical capital per worker has contributed the most to U.S. productivity growth.
  • U.S. capital accumulation is increasingly dependent on foreign capital inflows.
  • If future technology improvement occurs at its average historical rate, maintaining U.S. productivity growth will require more rapid capital accumulation, especially because worker efficiency appears likely to stagnate or decline.

The Decline in Labor Efficiency in the United States

The Decline in Labor Efficiency in the United States
  • Workers’ performance on the job is related to all of their demographic and economic attributes, including education, age, family structure, gender, race, labor force status (full- or part-time work), peer group (birth-year), and others.
  • The annual market-wide “effective labor input” depends upon the quantity (number of work hours contributed) and the efficiency (related to worker attributes) of individuals engaged in market production.
  • Labor efficiency is projected to decline in the future and offset growth in labor quantity to slow growth of aggregate “effective labor input.” Official government analysts typically do not project changes in labor efficiency, thereby imparting a more optimistic outlook to budget projections.

Education and Income Growth

Education and Income Growth
  • The large premium that college degree holders earn relative to workers with only a high school diploma suggests that a better-educated workforce would increase U.S. output.
  • Barriers to borrowing against future income, though, may make it difficult to acquire a college education, implying a potential role for using policy to increase access to college, especially if it is appropriately targeted.
  • However, college education is costly, and the payoff is uncertain and realized only after a lengthy absence from the workforce. Optimal policy, therefore, aims to balance these costs against the potential benefits, requiring the explicit modeling of education attainment when making budget projections.

Changes in American Economic Productivity

Changes in American Economic Productivity
  • Improving citizens’ well-being requires increasing productivity over time – the efficiency of converting resources such as labor, land, and physical plant and equipment into useful goods and services.

  • U.S. productivity has slowed dramatically during the last decade, largely due to slower innovation and reduced growth of capital per worker.

  • The productivity slowdown will make funding government programs more challenging. Public policies that encourage additional capital accumulation and reward innovation could reverse at least some of the recent productivity declines.

The Effects of Immigration on the United States’ Economy

The Effects of Immigration on the United States’ Economy
  • While some policymakers have blamed immigration for slowing U.S. wage growth since the 1970s, most academic research finds little long run effect on Americans’ wages.

  • The available evidence suggests that immigration leads to more innovation, a better educated workforce, greater occupational specialization, better matching of skills with jobs, and higher overall economic productivity.

  • Immigration also has a net positive effect on combined federal, state, and local budgets. But not all taxpayers benefit equally. In regions with large populations of less educated, low-income immigrants, native-born residents bear significant net costs due to immigrants’ use of public services, especially education.