Mine Zeynep Senses

The Effects of Outsourcing on the Elasticity of Labor Demand

In this paper, I focus on the effects of outsourcing on conditional labor demand elasticities. I begin by developing a model of outsourcing that formalizes this relationship. I show that the increased possibility of outsourcing (modeled as a decline in foreign intermediate input prices and an increase in the elasticity of substitution between foreign and domestic intermediate inputs) should increase labor demand elasticities. I also show that, a decline in the share of unskilled labor, due either to skill biased technological change or to movement of unskilled labor intensive stages abroad, can work in the opposite direction and reverse the increasing trend in elasticities. I then test the predictions of the model using the U.S. Census Bureau’s Longitudinal Research Database (LRD). The instrumental variable approach used in the estimation of labor demand equations is the main methodological contribution of this paper. I directly address the endogeneity of wages in the labor demand equation by using average nonmanufacturing wages for each location and year as an instrumental variable for the plant-level wages in the manufacturing sector. The results support the main predictions of my model. U.S. manufacturing plants operating in industries that heavily outsource experienced an increase in their conditional labor demand elasticities during the 1980-1992 period. After 1992 elasticities began to decrease in outsourcing industries. This finding is consistent with the model which suggests that a decline in the share of unskilled labor in total cost could result in such a decrease in labor demand elasticities, precisely when the level of outsourcing is high. Estimates at the two-digit industry level provide further evidence in support of the hypothesis that heavily outsourcing industries experience greater increases in their elasticities.

Trade Liberalization, Firm Heterogeneity, and Wages: New Evidence from Matched Employer-Employee Data

In this paper, the authors use a linked employer-employee database from Brazil to examine the impact of trade reform on the wages of workers employed at heterogeneous firms. The analysis of the data at the firm-level confirms earlier findings of a differential positive effect of trade liberalization on the average wages at exporting firms relative to non-exporting firms. However, this analysis of average firm-level wages is incomplete along several dimensions. First, it cannot fully account for the impact of a change in trade barriers on workforce composition especially in terms of unobservable (time-invariant) characteristics of workers (innate ability) and any additional productivity that obtains in the context of employment in the specific firm (match specific ability). Furthermore, the firm-level analysis is undertaken under the assumption that the assignment of workers to firms is random. This ignores the sorting of worker into firms and leads to a bias in estimates of the differential impact of trade on workers at exporting firms relative to non-exporting firms. Using detailed information on worker and firm characteristics to control for compositional effects and using firm-worker match specific effects to account for the endogenous mobility of workers, the authors find the differential effect of trade openness on wages in exporting firms relative to domestic firms to be insignificant. Consistent with the models of Helpman, Itskhoki, and Redding (2010) and Davidson, Matusz and Schevchenko (2008), they also find that the workforce composition improves systematically in exporting firms in terms of innate (time invariant) worker ability and in terms the quality of the worker-firm matches.

The effects of wrongful discharge protection on foreign multinationals: Evidence from transaction-level data

Using detailed micro-level data from 1977 to 1994, we analyze the impact of employment protection measures adopted across US states on the number and the value of new inbound foreign direct investment (FDI) transactions completed by foreign-owned companies. Our findings point to a robust negative association between the implementation of employment protection laws and both the extensive and the intensive margins of FDI in the US. When states adopt regulations that increase employers firing costs, FDI transactions by foreign multinational companies become less frequent and decrease in value, with stronger negative impacts in more labour-intensive industries. There is also some evidence of diversion and spillover effects from the adoption of these measures by neighbouring states.

International trade and economic insecurity

Whether or not international trade exposes workers to economic insecurity depends on the nature of the trade exposure of the firm, or industry, in which the worker is employed. Import-competing industries experience higher levels of risk to workers’ incomes and employment, while firms that import intermediate production stages (“offshoring”) display bigger employment responses to small changes in workers’ wages, and are more likely to shut down home factories. But offshoring also helps firms weather economic shocks. Offshoring firms are more likely to survive and provide greater employment stability to their workers.