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Working Paper
Firm Dynamics and SOE Transformation During China's Economic Reform
We study China’s state-owned enterprises (SOE) reform with a focus on the corporatization of SOEs. We first empirically document that small SOEs are more likely to exit or become privatized, whereas big SOEs are more likely to be corporatized while remaining under state ownership. We then build a heterogeneous-firm model featuring financial frictions, endogenous entry and exit, and optimal firm-type choices. Our calibrated model suggests that in the long run, the SOE reform increases the aggregate output by facilitating resource reallocation to the private sector. Along the transition, the ...
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Grown-up business cycles
We document two striking facts about U.S. firm dynamics and interpret their significance for employment dynamics. The first is the dramatic decline in firm entry and the second is the gradual shift of employment toward older firms since 1980. We show that despite these trends, the lifecycle dynamics of firms and their business cycle properties have remained virtually unchanged. Consequently, aging is the delayed effect of accumulating startup deficits. Together, the decline in the employment contribution of startups and the shift of employment toward more mature firms contributed to the ...
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Demographic origins of the startup deficit
We propose a simple explanation for the long-run decline in the U.S. startup rate. It originates from a slowdown in labor supply growth since the late 1970s, largely pre-determined by demographics. This channel can explain roughly 60 percent of the decline and why incumbent firm survival and average growth over the lifecycle have changed little. We show these results in a standard model of firm dynamics and test the mechanism using cross-state variation in labor supply growth. Finally, we show that a longer entry rate series imputed using historical establishment tabulations rises over the ...
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A unified approach to measuring u*
This paper bridges the gap between two popular approaches to estimating the natural rate of unemployment, u*. The first approach uses detailed labor market indicators, such as labor market flows, cross-sectional data on unemployment and vacancies, or various measures of demographic changes. The second approach, which employs reduced-form models and DSGE models, relies on aggregate price and wage Phillips curve relationships. We combine the key features of these two approaches to estimate the natural rate of unemployment in the United States using both data on labor market flows and a ...
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Nonlinear Firm Dynamics
This paper presents empirical evidence on the nature of idiosyncratic shocks to firms and discusses its role for firm behavior and aggregate fluctuations. We document that firm-level sales and productivity are hit by heavy-tailed shocks and follow a nonlinear stochastic process, thus departing from the canonical linear. We estimate a state-of-the-art model to flexibly capture the rich dynamics uncovered in the data and characterize the drivers of nonlinear persistence and non-Gaussian shocks. We show that these features are crucial to get empirically plausible volatility and persistence of ...
Working Paper
Firm Dynamics and SOE Transformation During China’s Economic Reform
We study the reform of China’s state-owned enterprises (SOE) with a focus on the corporatization of SOEs. We first document the empirical patterns of the "grasp the large and let go of the small" policy. To quantify the implications of the reform for aggregate output and TFP, we build a three-sector firm dynamics model featuring financial frictions and endogenous firm-type choices. Our calibrated model shows that the SOE reform can increase long-run TFP by encouraging the exit of the least efficient firms in the state sector, but the magnitude of TFP growth also depends on the efficiency in ...
Working Paper
The Aggregate Effects of Labor Market Frictions
Labor market frictions are able to induce sluggish aggregate employment dynamics. However, these frictions have strong implications for the source of this propagation: They distort the path of aggregate employment by impeding the flow of labor across firms. For a canonical class of frictions, we show how observable measures of such flows can be used to assess the effect of frictions on aggregate employment dynamics. Application of this approach to establishment microdata for the United States reveals that the empirical flow of labor across firms deviates markedly from the predictions of ...
Working Paper
Aggregate Consequences of Dynamic Credit Relationships
Which financial frictions matter in the aggregate? This paper presents a general equilibrium model in which entrepreneurs finance a firm with a long-term contract. The contract is constrained efficient because firm revenue is costly to monitor and entrepreneurs may default. The cost of monitoring firms and the entrepreneurs' outside options determine the significance of moral hazard relative to limited enforcement for financial contracting. Calibrating the model to the U.S. economy, I find that the relative welfare loss from financial frictions is about 5 percent in terms of aggregate ...
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Market Concentration and Aggregate Productivity: The Role of Demand
This paper studies the relationship between market concentration and aggregate productivity when firm-level demand emerges from past marketing investments. Granular firms may invest in demand both to complement their productivity and to amplify market power—this second force can create persistent mismatch between customer capital and productivity. The importance of this mismatch depends on the relative persistence of productivity and demand. Empirically, we find that demand is more persistent than productivity, implying a sizable role for mismatch. This leads to sluggish demand-side ...
Working Paper
The Micro and Macro Dynamics of Capital Flows
We study empirically and theoretically the effects of international financial flows on resource allocation. Using the universe of firms in Hungary, we show that removing capital controls lowers firms’ cost of capital and increases household consumption, with the latter playing a dominant role. The consumption channel leads to reallocation of resources toward high expenditure elasticity activities—such as services—promoting both the expansion of incumbents and firm entry. A multi-sector heterogeneous firm model replicates these dynamics. Our model shows that non-homotheticity in ...