Thomas Lemieux (born August 10, 1962) is a Canadian economist and professor at the University of British Columbia.
Thomas Lemieux | |
---|---|
Born | August 10, 1962 |
Nationality | Canadian |
Education | Professor of Economics |
Alma mater | Université Laval Princeton University |
Occupation | Lecturing |
Organization | University of British Columbia |
Lemieux belongs to the world's foremost labour economists in terms of research output, in particular on wage inequality. [1]
Lemieux was born in Quebec City, Quebec. [2] He received his B.A. in economics from Université Laval in 1984 and his M.A. in economics from Queen's University the following year. In 1989, he received his Ph.D. from Princeton University.
After receiving his Ph.D, he taught at the Massachusetts Institute of Technology until 1992. In 1992, he was named an assistant professor at the Université de Montréal. In 1999, Lemieux accepted a faculty position at the University of British Columbia. He has been an associate editor at several economics journals, such as the Journal of Business and Economic Statistics , Labour Economics , Journal of the European Economic Association , Review of Economics and Statistics , and American Economic Review . [3]
A good portion of his research centres around the topic of income inequality. Lemieux also studies econometric methods to analyze the income distribution. He is a fellow at the Royal Society of Canada and the Society of Labor Economists. [2] At the University of British Columbia, Lemieux directs the Team for Advanced Research on Globalization, Education, and Technology. Lemieux has published 40 journal articles and two books on labor economics. [4]
Thomas Lemieux's research interests mostly relate to labour economics in general and wage inequality in specific as well as econometric methods to analyze these issues. According to IDEAS/RePEc, Lemieux belongs to the top 1% of most-cited economists. [5] In his research, Lemieux has frequently collaborated with David Card and Nicole Fortin.
The main area of Lemieux's research has been the distribution and dynamics of wages. Studying the rise in wage inequality in the U.S. in the 1980s in a series of studies with John DiNardo and Nicole Fortin, Lemieux repeatedly emphasizes the importance labour market institutions, finding e.g. that about a third of the growth in male and female wage inequality can be attributed to deunionization for men and to the minimum wage for women, with economic deregulation having a comparatively small impact; [6] [7] moreover, the difference between the declines of the unionization rates in Canada and the U.S. are found to account for two-thirds of the growth differential in wage inequality between both. [8] Further work with David Card, Francis Kramarz, John Abowd and David Margolis studied differences between the labour market institutions in the U.S., Canada and France in the 1980s, notably the causes of changes in the relative structure of wages and employment and the effect of the minimum wage on youth employment. [9] [10] Moreover, in studies with Card and Fortin, Lemieux analysed the differentials between genders and racial groups in the U.S., with their findings emphasizing the role of changes in returns to skill and the link between female wage gains and male wage inequality. [11] [12] In further work on unions, Lemieux argues that Canadian unions increase the average wage of workers and compress the returns to skills, and provides a comprehensive comparison of the effect of unionization on wage inequality in the U.S., Canada and UK (together with Card and W. Craig Riddell). [13] [14] In another study with Card, Lemieux suggested that falling supply in highly educated workers may account for the growth in the return to college for younger men in the U.S., UK and Canada. [15] In the 2000s, Lemieux repeatedly highlighted the role of increased returns to postsecondary education and sophisticated institutional explanations (e.g. including performance pay, based on work with Bentley MacLeod and Daniel Parent) for the growth in wage inequality at the top of the wage distribution in the 1980s and 1990s, while arguing against simple models of skill-biased technological change [16] [17] [18] [19] This empirical discussion was accompanied by various models advanced by Lemieux, e.g. - in joint work with Robert Gibbons, Lawrence Katz and Parent - of a model where a worker's skills are imperfectly observable but determine her current wage and sector, high-skill workers concentrate in high-wage sectors, thus earning high returns to their skills (with Robert Gibbons, Lawrence Katz and Daniel Parent). [20]
Lemieux has contributed significantly to the methodological development of applied econometrics. Since the 2000s, he has repeatedly used regression discontinuity designs to analyze various economic issues. For example, in work with David Card that exploits the discontinuity in college enrollment rates due to U.S. high school graduates' attempt of avoiding the draft during the Vietnam War, Lemieux estimates that draft avoidance raised college attendance rates by 4-6%. [21] Similarly, in a study with Kevin Milligan that uses the discontinuity in Quebecois social assistance between childless recipients under and above age 30, Lemieux observes that the increase in social assistance benefits reduces employment by disincentivizing work. [22] Publications with Guido Imbens and David S. Lee, Lemieux further reviewed the use of regression discontinuity designs in economics [23] and provides guidance for practitioners. [24] Another key area of Lemieux's work in econometrics are decomposition methods, in particular related to comparisons between wage distributions and the analysis of their dynamics. [25] More recently, together with Sergio Firpo and Nicole Fortin, Lemieux has pioneered the use of recentered influence function (RIF) regressions, an extension of the Oaxaca-Blinder decomposition method which allows to study the impact of changes in the distribution of the explanatory variables on quantiles of the unconditional (marginal) distribution of an outcome variable. [26] While Lemieux, Firpo and Fortin originally used RIF regressions to analyze the polarization of male wages in the U.S. from the 1980s to the mid-2010s, [27] their methodology has been adopted by other organizations, e.g. the ILO's 2018/19 Global Wage Report. [28] Another important application of RIFs by Lemieux, Firpo and Fortin is the analysis of the contributions of changes in the returns to occupational tasks to changes in the (U.S.) wage distribution, for which they find that wage polarization was driven by STBC and deunionization in the 1980s and 1990s, whereas offshorability of jobs became a major driver in the 1990s. [29] A review by these authors of common decomposition methods used in economics was published in the Handbook of Labor Economics. [30]
Other major research by Lemieux includes an analysis of the effects of foreign competition on Canadian collective bargaining agreements (with John Abowd), [31] of the effects of taxes on informal labour supply (with Bernard Fortin and Pierre Frechette), [32] on the evolution of work, school and living arrangements among North American youth in the 1970s-90s, [33] on the substitution of alcohol by marijuana due to the increase in the minimum drinking age in several U.S. states, [34] and on dropout and enrollment trends in the U.S. in the postwar period. [35]
Econometrics is an application of statistical methods to economic data in order to give empirical content to economic relationships. More precisely, it is "the quantitative analysis of actual economic phenomena based on the concurrent development of theory and observation, related by appropriate methods of inference." An introductory economics textbook describes econometrics as allowing economists "to sift through mountains of data to extract simple relationships." Jan Tinbergen is one of the two founding fathers of econometrics. The other, Ragnar Frisch, also coined the term in the sense in which it is used today.
David Edward Card is a Canadian-American labour economist and the Class of 1950 Professor of Economics at the University of California, Berkeley, where he has been since 1997. He was awarded half of the 2021 Nobel Memorial Prize in Economic Sciences "for his empirical contributions to labour economics", with Joshua Angrist and Guido Imbens jointly awarded the other half.
Various effects of migration have been an area of study and debate amongst economists. Researchers have studied questions including: if migrants hurt wages for natives; what is their tax contribution/burden; what are the effects of the money migrants send home (remittances); and how does the loss of workers affect the sender country.
Joshua David Angrist is an Israeli–American economist and Ford Professor of Economics at the Massachusetts Institute of Technology. Angrist, together with Guido Imbens, was awarded the Nobel Memorial Prize in Economics in 2021 "for their methodological contributions to the analysis of causal relationships".
In econometrics and statistics, a structural break is an unexpected change over time in the parameters of regression models, which can lead to huge forecasting errors and unreliability of the model in general. This issue was popularised by David Hendry, who argued that lack of stability of coefficients frequently caused forecast failure, and therefore we must routinely test for structural stability. Structural stability − i.e., the time-invariance of regression coefficients − is a central issue in all applications of linear regression models.
In statistics, econometrics, political science, epidemiology, and related disciplines, a regression discontinuity design (RDD) is a quasi-experimental pretest–posttest design that aims to determine the causal effects of interventions by assigning a cutoff or threshold above or below which an intervention is assigned. By comparing observations lying closely on either side of the threshold, it is possible to estimate the average treatment effect in environments in which randomisation is unfeasible. However, it remains impossible to make true causal inference with this method alone, as it does not automatically reject causal effects by any potential confounding variable. First applied by Donald Thistlethwaite and Donald Campbell (1960) to the evaluation of scholarship programs, the RDD has become increasingly popular in recent years. Recent study comparisons of randomised controlled trials (RCTs) and RDDs have empirically demonstrated the internal validity of the design.
The Blinder–Oaxaca decomposition, also known as Kitagawa decomposition, is a statistical method that explains the difference in the means of a dependent variable between two groups by decomposing the gap into within-group and between-group differences in the effect of the explanatory variable.
Alan Manning is a British economist and professor of economics at the London School of Economics.
The Mincer earnings function is a single-equation model that explains wage income as a function of schooling and experience. It is named after Jacob Mincer. Thomas Lemieux argues it is "one of the most widely used models in empirical economics". The equation has been examined on many datasets. Typically the logarithm of earnings is modelled as the sum of years of education and a quadratic function of "years of potential experience".
John Maron Abowd is the Associate director for research and methodology and chief scientist of the US Census Bureau, where he serves on leave from his position as the Edmund Ezra Day Professor of Economics, professor of information science, and member of the Department of Statistical Science at Cornell University.
Joseph Gerard Altonji is an American labour economist and the Thomas DeWitt Cuyler Professor of Economics at Yale University. His fields of interest include macroeconomics and applied econometrics and in particular labour economics, being ranked as one of the foremost labour economists worldwide. In 2018, his contributions to the analysis of labour supply, family economics and discrimination were rewarded with the IZA Prize in Labor Economics.
Andrew Donald Roy was a British economist who is known for the Roy model of self-selection and income distribution and Roy's safety-first criterion.
Haroon Bhorat is Professor of Economics and Director of the Development Policy Research Unit (DPRU) at the University of Cape Town. His area of research has concentrated on labour economics and poverty/income distribution mainly in his native South Africa, and recently, been expanded to other parts of Africa - in which he is world-renowned authority.
Francis Kramarz is a French economist who works as Professor at the École Nationale de la Statistique et de l'Administration Économique (ENSAE), where he has been directing the Center for Research in Economics and Statistics (CREST). He is one of the leading labour economists in France.
Nicole M. Fortin is a Professor in the Vancouver School of Economics (VSE) at University of British Columbia, where she obtained her Ph.D. in Economics. Before moving to Vancouver, B.C. in 1999, Fortin taught at Université de Montréal for ten years in her hometown. She was the President of the Canadian Women Economic Network (CWEN) in 2013–2014. Her research focus is placed on three main themes, including the linkage between labour market institutions and wage inequality, issues related to the economic progress of gender equality, as well as contributions to decomposition methods. Notably, Fortin contributed to the ground-breaking research presented in the 2015 World Happiness Report by examining how various factors impact feelings of happiness for individuals, and societal well-being overall, across the globe.
Petra Elisabeth (Crockett) Todd is an American economist whose research interests include labor economics, development economics, microeconomics, and econometrics. She is the Edward J. and Louise W. Kahn Term Professor of Economics at the University of Pennsylvania, and is also affiliated with the University of Pennsylvania Population Studies Center, the Human Capital and Equal Opportunity Global Working Group (HCEO), the IZA Institute of Labor Economics and the National Bureau of Economic Research.
Raquel Fernández is an economist and currently the Julius Silver, Roslyn S. Silver and Enid Silver Winslow Professor of Economics at New York University. She is also a fellow of the Econometric Society.
David S. Lee is Chemical Bank Chairman's Professor of Economics and Public Affairs at Princeton University, founding director of Princeton's Initiative for Data Exploration and Analytics for Higher Education, and a Research Associate of the National Bureau of Economic Research. From 2013 to 2017, he was provost of Princeton, and from 2009 to 2013 he led Princeton's Industrial Relations Section. He co-edited The Review of Economics and Statistics from 2001 to 2013. He was a Sloan Research Fellow in 2006 and won the John T. Dunlop Outstanding Scholar Award of the Labor and Employment Relations Association in 2007.
Eric Baird French is the Montague Burton Professor of Industrial Relations and Labour Economics at the University of Cambridge. He is also a Co-Director at the ESRC Centre for the Microeconomic Analysis of Public Policy, a Fellow at the Institute for Fiscal Studies and a Fellow at the Centre for Economic Policy Research. His research interests include: econometrics, labour and health economics.
Stéphane Bonhomme is a French economist currently at the University of Chicago, where he is the Ann L. and Lawrence B. Buttenwieser Professor of Economics. Bonhomme specializes in microeconometrics. His research involves latent variable modeling, modeling of unobserved heterogeneity in panel data, and its applications in labor economics, in particular the analysis of earnings inequality and dynamics.