We develop a framework to estimate the aggregate capital-labor elasticity of substitution by aggregating the actions of individual plants, and use it to assess the decline in labor's share of income in the US manufacturing sector. The aggregate elasticity reflects substitution within plants and...

We study the implications of microeconomic heterogeneity for aggregate technology, showing that the aggregate elasticity of substitution between capital and labor can be expressed as a simple function of plant level structural parameters and sufficient statistics for plant heterogeneity. This...

We develop a framework to estimate the aggregate capital-labor elasticity of substitution by aggregating the actions of individual plants, and use it to assess the decline in labor's share of income in the US manufacturing sector. The aggregate elasticity reflects substitution within plants and...

We study the implications of microeconomic heterogeneity for aggregate technology, showing that the aggregate elasticity of substitution between capital and labor can be expressed as a simple function of plant level structural parameters and sufficient statistics for plant heterogeneity. This...

Under the production approach to markup estimation, the markup is the output elasticity of any variable input divided by the input’s share of revenue. However, output elasticities vary across producers due to non-neutral technological differences. I develop a flexible cost share estimator to...

Under the production approach to markup estimation, any flexible input should recover the markup. I test this implication using four manufacturing censuses and store-level data from a US retailer, and overwhelmingly reject that markups estimated using labor and materials have the same...