We quantify the contribution of firm-level technological change to skill demand and aggregate inequality in the presence of imperfect competition in the labor market. We show that skill-biased technological change increases both the firm-level skill ratio and the skill premium, while other...

How do global production networks and market structure interact to shape the welfare effects of trade and competition policy? We develop a model with two-sided firm heterogeneity, matching frictions, and imperfect supplier competition. More productive buyers match with more suppliers, inducing...

By affecting prices and thereby market shares of green and brown firms, product innovations and process innovations influence industry emissions even when they do not directly affect the emission intensity of the innovating firm. Using a differentiated two-stage duopoly, this paper therefore...

This paper studies the adoption of clean technology in an oligopolistic setting, focusing on carbon capture and storage (CCS) in the cement sector. Firms can choose between two technologies: a carbon-intensive ("dirty") technology and a low-carbon ("clean") one. Initially, all firms operate with...

Using a new administrative dataset, we provide fresh micro-level evidence on firms’ returns to scale (RTS). We employ a new administrative database, iBACH, which contains extensive high-quality annual balance sheet, financial, and demographic information on more than two million non-financial...

We study the role of firm heterogeneity and imperfect competition for global production networks and the gains from trade. We develop a quantifiable trade model with two-sided firm heterogeneity, matching frictions, and oligopolistic competition upstream. More productive buyers endogenously...

Participation in social groups ties members to local communities. Employers can capture these benefits as rents when geographically-specific club goods raise the cost of labor mobility. We measure ties to local clubs using the shares of households identifying with a minority religion, enrollment...

Labor economics often assumes that wages w are equal to the marginal revenue product of labor MRP L. However, recent literature has shown that firms' market power allows them to pay wages substantially below marginal productivity. The markdown (MRP L - w)/w is our preferred measure of firms'...

By affecting prices and thereby market shares of green and brown firms, product innovations and process innovations influence industry emissions even when they do not directly affect the emission intensity of the innovating firm. Using a differentiated two-stage duopoly, this paper therefore...

The main goal of this article is to contribute to the theoretical analysis of international trade under imperfect competition using the Cournot oligopoly model with heterogeneous firms. In particular, our objective is to provide some insights into the role of cost asymmetry in studying the...

We develop a structural framework that allows us to quantify the evolution of aggregate bilateral trade costs and markups over time. With minimal assumptions, we can disentangle aggregate markup and trade cost changes from observed changes in trade flows. We apply our method to trade data...

We study the determination of market power at the firm and industry levels when heterogeneous firms compete for sales to ex ante homogeneous buyers in a market with both directed and random search and free entry of firms that differ in productivity. Search and the distribution of productivity...

This study constructs a model of exclusive-offer competition between two existing up-stream firms. Under exclusive-offer competition, the upstream firm's profit depends on the rival's exclusive offer. If the rival makes an exclusive offer acceptable for the downstream firm, the upstream firm is...

This study investigates the impact of global price fluctuations on economic welfare in Burkina Faso, with a particular focus on the role of trade intermediaries. Using a computable general equilibrium (CGE) calibrated with a 2019 Social Accounting Matrix (SAM), the analysis incorporates a trade...

By affecting prices and thereby market shares of green and brown firms, product innovations and process innovations influence industry emissions even when they do not directly affect the emission intensity of the innovating firm. Using a differentiated two-stage duopoly, this paper therefore...

This study constructs a model of exclusive-offer competition between two existing up-stream firms. Under exclusive-offer competition, the upstream firm's profit depends on the rival's exclusive offer. If the rival makes an exclusive offer acceptable for the downstream firm, the upstream firm is...

This paper studies the adoption of clean technology in an oligopolistic setting, focusing on carbon capture and storage (CCS) in the cement sector. Firms can choose between two technologies: a carbon-intensive ("dirty") technology and a low-carbon ("clean") one. Initially, all firms operate with...

This paper develops an analytical model of sequential electricity markets in which renewable and conventional producers compete in two stages. Building on previous work, we introduce risk-averse renewable producers and distinguish between competitive and oligopolistic renewable producers. The...

Chapter 1. Introduction -- Chapter 2. Differentiated goods and industry -- Chapter 3. Horizontal product differentiation -- Chapter 4. Vertical product differentiation -- Chapter 5. Network effects and product differentiation -- Chapter 6. Nesting horizontal and vertical differentiation --...

Since the push towards central clearing in derivatives markets after the global financial crisis, an open question has been how the development has affected competition. This paper models imperfect competition between dealers in derivatives markets. Two risk-neutral dealers offer derivatives to...

We examine heterogeneous rent-sharing in New Zealand using LEED data. Using a refined measures of quasi-rents per worker, we find that 20% to 30% of workers are in zero-excess-rent firms - disproportionately women, Māori or Pacific peoples, low-qualified workers, and those in hospitality, admin...

In this paper, we develop an overlapping generation model with imperfect competition and land to provide a theoretical foundation for some empirical observations made since the end of the 1970s. The problem is that these new “stylized facts” do not coincide with Kaldor’s stylized facts and...

This paper examines whether a Northern firm prefers to export or to engage in FDI to serve the South. If the firm engages in FDI, its technology is imitated, and a Southern firm enters the market that may sell in both markets. The Northern firm may invest to prevent product piracy in the North....

This paper studies commodity taxation in a model featuring heterogeneous consumers, imperfect competition, and tax salience. We derive new formulas for the incidence and marginal excess burden of commodity taxation highlighting interactions between tax salience and market structure. We estimate...