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Jacob Lefler

CV

Education

  • PhD, UC Berkeley, Agricultural and Resource Economics (Expected May 2026)
  • BS, Brigham Young University, Mathematics and Economics, 2019

Fields

  • International Trade, Spatial Economics
  • Agricultural Economics, Environmental Economics

Job Market Paper

Freight in the Time of Covid: A Model of US Trucking

Trade models typically ignore the freight transportation industry. I develop a model of the US trucking industry that can replicate several stylized facts that I document, including inversely and spatially correlated transport prices, while remaining tractable enough to be embedded within a trade model and quantified using market-level data. Rather than being treated as fixed and exogenous, trade costs emerge endogenously as the market-clearing prices of the freight transportation industry. I quantify driver supply using instruments based on Covid-era shocks to US container import quantities. Finally, I use a simple calibration of my spatial model to estimate how changes in freight transportation prices affected goods prices and consumer welfare following the onset of Covid, and I find that changes in transport markets were primarily demand-driven.

Teaching - UC Berkeley

  • Undergraduate International Trade, 2025, (TA)
  • Undergraduate Environmental Economics, 2022, (TA)
  • Masters Environmental Economics, 2021, (TA)

Military Service

US Marine Corps Reserve, Logistics Officer, 2022-Present.
Platoon Commander, Company Executive Officer.


You can find my research in environmental epidemiology on Google Scholar.