Using novel firm-level microdata and leveraging a natural experiment, this paper
provides causal evidence for the role of trade and multinational firms in the crosscountry
transmission of shocks. Foreign multinational affiliates in the U.S. exhibit
substantial intermediate input linkages with their source country. The scope for
these linkages to generate cross-country spillovers in the domestic market depends
on the elasticity of substitution with respect to other inputs. Using the 2011
T¯ohoku earthquake as an exogenous shock, we estimate this elasticity for those
firms most reliant on Japanese imported inputs: the U.S. affiliates of Japanese
multinationals. These firms suffer large drops in U.S. output in the months following
the shock, roughly proportional to the drop in imports and consistent with
a Leontief relationship between imported and domestic inputs. Structural estimates
of the production function for these firms yield disaggregated production
elasticities that are similarly low. Our estimates suggest that global supply chains
are sufficiently rigid to play an important role in the cross-country transmission
of shocks.Support for this research at the Michigan RDC from NSF (ITR-0427889)
is also gratefully acknowledged. Any opinions and conclusions expressed herein are those of the authors and do not
necessarily represent the views of the U.S. Census Bureau. All results have been reviewed to ensure no confidential
information is disclosed