Does Mobility Beget Mobility? Coworker Networks and the Sectoral Reallocation of Labor

We study how coworker networks influence sectoral job-switching decisions, using German administrative data and causal identification strategies. A general equilibrium model shows that accounting for coworker networks raises the estimated welfare effect of COVID-induced productivity shocks.

October 2026 · Sophia Mo and Xinyue Lin

Coworker Influence on Job Choice: Information, Connection, and Industry Switching

Using a novel survey of U.S. workers and a calibrated sector-choice model, we show that coworkers shape industry mobility through two offsetting channels: better information about wages and greater perceived access to jobs in connected sectors.

October 2026 · Sophia Mo, Xinyue Lin, Armando Miano

Organizational Bridges and the Direction of Inventive Search

Using U.S. patent records matched to employer histories for four million inventors, we show that co-inventor ties to peers at firms specialized in other fields steer inventors into those fields. A mass-layoff displacement IV provides causal identification.

September 2026 · Sophia Mo, Jieying Zhang

Lender Experiences and Mortgage Costs

This paper explores how lenders’ past experiences with house price changes impact the mortgage rates they set, driven by their expectations of future price trends.

January 2023 · Sophia Mo