Innovation is crucial to economic development. Innovation expenditures in Germany's business sector as well as public funding for science and research have been increasing in the past decade. However, the share of businesses with innovations - especially among the small- and medium-sized ones -...

This paper investigates the importance of firm-to-firm production network linkages for earnings inequality. We develop a quantitative model in which heterogeneous firms hire workers of different abilities in an imperfectly competitive labor market and source intermediates from heterogeneous...

How corrupt is Congress? We provide an indirect test by comparing wealth accumulation among U.S. House members and the public. Using wealth data from representatives’ Personal Financial Disclosure forms and from the Panel Study of Income Dynamics, we examine whether representatives accumulate...

We develop a quantitative model in which heterogeneous firms hire heterogeneous workers in an imperfectly competitive labor market and source intermediates from suppliers in a production network. We use the model to investigate how the production network shapes three key labor market outcomes:...

Innovation depends on exporting and, in particular, on scale and competition in export markets. We develop a theory featuring (1) quality-segmented markets, (2) step-by-step innovation that moves firms forward along the quality ladder, and (3) escape-the-competition motives for innovation. We...

This study investigates the allocation of China’s R&D subsidies and its effectiveness in stimulating firms’ own R&D investments for the population of Chinese listed firms throughout the time period 2001 to 2006. For allocation, we find that firm participation is determined by prior grants,...

We examine how exposure of Chinese firms to the Covid-19 shock varied with a cluster index (measuring spatial agglomeration of firms in related industries) at the county level. Two data sources are used: entry flows of newly registered firms in the entire country, and an entrepreneur survey...