Todd A. Sorensen

Research Fellow

University of California, Merced

tsorensen@ucmerced.edu

Research Interests

Todd's primary areas of interest are the study of migration issues and the study of firm market power over workers. His recent work has shown that firm wage setting power increases during economic downturns and that firm market power may bias estimates of the substitutability of different types of workers. He has also studied the mobility of guest workers on H-1B visas and found a surprising amount of mobility of these workers, providing a check on firm market power over these workers.

He joined IZA as a Research Affiliate in January 2007 and became a Research Fellow in April 2010.

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IZA Publications

IZA Discussion Paper No. 14164

Immigration and Voting Patterns in the European Union: Evidence from Five Case Studies and Cross-Country Analysis

Ethan Grumstrup, Todd A. Sorensen, Jan Misiuna, Marta Pachocka

published in: Migration Letters, 2021, 18 (5), 573–589.

IZA Discussion Paper No. 12096

Monopsony Power and Guest Worker Programs

Eric M. Gibbons, Allie Greenman, Peter Norlander, Todd A. Sorensen

published in: Antitrust Bulletin, 2019, 64 (4), 540-565

IZA Discussion Paper No. 11966

Monopsony in Labor Markets: A Meta-Analysis

Anna Sokolova, Todd A. Sorensen

published in: ILR Review, 2021, 72 (1), 27-55

IZA Discussion Paper No. 11836

Changing Sex-Ratios among Immigrant Communities in the U.S.

Adriana Hernández Catañeda, Todd A. Sorensen

published in: Journal of Economics, Race and Policy, 2019, 2 (1-2), 20 - 42

IZA Discussion Paper No. 10646

Bounds with Imperfect Instruments: Leveraging the Implicit Assumption of Intransitivity in Correlations

Nathan Wiseman, Todd A. Sorensen

IZA Discussion Paper No. 10558

The Implicit Costs of Motherhood over the Lifecycle: Cross-Cohort Evidence from Administrative Longitudinal Data

Christian Neumeier, Todd A. Sorensen, Douglas A. Webber

published as 'The Implicit Costs of Motherhood over the Lifecycle: Cross-Cohort Evidence from Administrative Longitudinal Data' in: Southern Economic Journal, 2018, 84 (3), 716-733

IZA Discussion Paper No. 9668

Discouraged Immigrants and the Missing Pop in EPOP

Peter Norlander, Todd A. Sorensen

published as '21st Century Slowdown: The Historic Nature of Recent Declines in the Growth of the Immigrant Population in the United States' in: Migration Letters, 2018, 15 (3), 410 - 422

IZA Discussion Paper No. 7456

Flight of the H-1B: Inter-Firm Mobility and Return Migration Patterns for Skilled Guest Workers

Briggs Depew, Peter Norlander, Todd A. Sorensen

published as "Inter-firm mobility and return migration patterns of skilled guest workers" in Journal of Population Economics, 2017, 30 (2), 681-721

IZA Discussion Paper No. 5928

Elasticity of Supply to the Firm and the Business Cycle

Briggs Depew, Todd A. Sorensen

published as 'The elasticity of labor supply to the firm over the business cycle' in: Labour Economics, 2013, 24, 196-204

IZA Discussion Paper No. 5881

On Input Market Frictions and Estimation of Factors Demand

Arnaud Dupuy, Todd A. Sorensen

published as 'On input market frictions and estimation of factors' demand' in: Southern Economic Journal, 2014, 80 (3), 772-782.