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Labor Force Participation and Job Search of Households (Job Market Paper)

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Abstract: In the household of a married couple, an increase in the husband's wage leads to a rise in the number of days his wife remains out of the labor force. If only one of the couple is employed, a wage increase for the employed partner lengthens the spouse's unemployment duration. Moreover, if both are employed, their wages move in the same direction. To explain these stylized facts, I construct an equilibrium model of the labor market in which a married couple jointly chooses market participation and search for and separation from a job. Calibration shows that the model can correctly account for the facts. The unified framework with endogenous market participation and frictional search is necessary to correctly predict the correlations in spouses' labor market outcomes. Using the benchmark model, I do policy experiments of unemployment insurance (UI) and the earned income tax credit (EITC). I show that generous UI can increase the employment-population ratio by mitigating married females' disincentive to participate in the labor market. I also show that the EITC increases the employment of single parents but it decreases employment of workers who belong to other types of households. In the sense of welfare, the EITC enhances welfare for all single parents, but it reduces welfare of some married parents by reducing the value of working wives.

Labor Market Reallocation in a Directed Search Model

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Abstract: This paper investigates skill-biased technological progress as a potential explanation for the upward shift that was observed in the US Beveridge Curve in the aftermath of the Great Recession. To study this channel, I base on the directed search model of Shi (2002) in which there are two types of workers and firms. In the equilibrium, unskilled workers apply for jobs at both high-tech and low-tech firms and skilled workers apply only to high-tech firms. If there were a skill-biased technological progress which favored the high-tech sector over the low-tech sector, the wage gap between sectors would widened. After the technological change, high wages of high-tech sector encourage unskilled workers to apply to high-tech firms with a greater probability than before. Since unskilled workers are not preferred by high-tech firms, this change in unskilled workers' application strategy lowers the aggregate job finding rate as the unskilled workers' job finding rate falls.
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