O47 Measurement of Economic Growth; Aggregate Productivity; Cross-Country Output Convergence

January 1, 2009

We use US county level data (3,058 observations) from 1970 to 1998 to explore the relationship between economic growth and the extent of government employment at three levels: federal, state and local. We find that increases in federal, state and local government employments are all negatively associated with economic growth. We find no evidence that government is more efficient at lower levels. While we cannot separate out the productive and redistributive services of government, we document that the county-level income distribution became slightly more unequal from 1970 to 1998. For those who justify government activities in terms of equity concerns – perhaps even trading off economic growth for equity – the burden falls on them to show that the income distribution would have widened more in the absence of government activities. We conclude that a release of government-employed labor inputs to the private sector would be growth-enhancing.

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July 1, 2008

Composition of the euro area workforce evolves over time and in response to changing labour market conditions. We construct an estimate of growth in euro area labour quality over the period 1983-2004 and show that labour quality has grown on average by 0.6% year-on-year over this time period. Labour quality growth was significantly higher in the early 1990s than in the 1980s. This strong increase was driven by an increase in the share of those with tertiary education and workers in prime age. Growth in labour quality moderated again towards the end of the 1990s, possibly reflecting the impact of robust employment growth resulting in the entry of workers with lower human capital. Labour quality growth has on average accounted for nearly one third of euro area labour productivity growth. The results point to a significant decline in the contribution of total factor productivity to euro area growth.

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February 1, 2006

This paper studies procyclical productivity growth at the industry level in the U.S. and in three European countries (France, Germany and the Netherlands). Industry-specific demand-side instruments are used to examine the prevalence of non-constant returns to scale and unmeasured input utilization. For the aggregate U.S. economy, unmeasured input utilization seems to explain procyclical productivity. However, this correction still leaves one in three U.S. industries with procyclical productivity. This failure of the model can also be seen in Europe and is mostly concentrated in services industries.

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April 1, 2006

Structural vector-autoregressions with long-run restrictions are extraordinarily sensitive to low-frequency correlations. This paper explores this sensitivity analytically and via simulations, focusing on the contentious issue of whether hours worked rise or fall when technology improves. Recent literature finds that when hours per person enter the VAR in levels, hours rise; when they enter in differences, hours fall. However, once we allow for (statistically and economically plausible) trend breaks in productivity, the treatment of hours is relatively unimportant: Hours fall sharply on impact following a technology improvement. The issue is the common high-low-high pattern of hours per capita and productivity growth since World-War II. Such low-frequency correlation almost inevitably implies a positive estimated impulse response. The trend breaks control for this correlation. In addition, the specification with breaks can easily 'explain' (or encompass) the positive estimated response when the breaks are omitted; in contrast, the no-breaks specification has more difficulty explaining the negative response when breaks are included. More generally, this example suggests a need for care in applying the long-run-restrictions approach.

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