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October 25, 2012
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Felix Reichling and Charles Whalen
Among the models that CBO uses to analyze the economic effects of changes in federal fiscal policy is a life-cycle growth model. That model requires an estimate of the responsiveness of the supply of labor to a one-time temporary change in after-tax compensation, which is described by the so-called Frisch elasticity. CBO incorporates into its analyses an estimate of the Frisch elasticity that ranges from 0.27 to 0.53, with a central estimate of 0.40. This paper describes how CBO derived that range from the research literature.

Robert McClelland and Shannon Mok
This paper updates a review conducted by CBO in 1996 in which the agency evaluated the academic research on the effects of changes in after-tax wages on labor supply in the U.S. economy. That review concluded that substitution elasticities were larger in absolute value than income elasticities and that the decision to work was more responsive to after-tax wages than was the choice of hours. In this update, we find that for men and single women, estimates of substitution elasticities have increased, and income elasticities still appear to be smaller in absolute value than substitution elasticities. We also find that labor supply elasticities of married women have fallen substantially in the last three decades, although they are still higher than the elasticities of men and unmarried women. Based on our review, the elasticities of broad measures of income (total income less capital gains) from tax return data are in most instances consistent with the labor supply elasticities estimated using survey data. We find little compelling evidence that high-income taxpayers have substantially higher elasticities with respect to their labor input than other taxpayers: While some studies have estimated higher elasticities of broad income among high-income taxpayers, those results appear to reflect those taxpayers’ greater ability to time their income. In contrast, we find evidence that low-income workers have higher elasticities of labor supply than other workers, especially in the component of their labor response that reflects movement in and out of the workforce.

Unemployment Insurance in the Wake of the Recent RecessionNov 2012 - Between 2007 and 2010, unemployment benefits expanded nearly five-fold owing to high unemployment due to the weak economy, and decisions by policymakers to increase the number of weeks for which eligible unemployed workers could receive benefits.
Small firms, widely believed to promote job growth, both create and eliminate jobs at higher rates than large firms do. Although small firms account for a disproportionate share of net job growth, that greater growth is driven primarily by new small firms.
| Firm Size, by Employee Count | Change in the Number of Workers Between December 2007 and December 2010 |
| Fewer than 50 workers | -7.1 percent |
| 50 to 499 workers | -8.1 percent |
| 500 or more workers | -5.4 percent |
Policies that help reduce the cost to small firms of complying with federal regulations could promote employment growth. But policies favoring small firms could also discourage them from growing in order to retain that preferential treatment. Moreover, easing some regulations for small firms could cause certain problems, such as pollution, to persist more than if regulations were applied uniformly across firms of different sizes.
Small firms receive more favorable treatment than larger firms through:

