Sewin Chan
Associate Professor of Public Policy; Director of the PhD Program
Sewin Chan is an economist whose research focuses on economic and financial risks faced by households as they interact with housing, labor and credit markets. She has studied mortgages and housing market risk, rental markets, consumer credit behavior, pensions, work and retirement decisions, job loss, geographic mobility, and accessible housing. Dr. Chan was previously a member of the U.S. Department of Labor’s Advisory Council on Employee Welfare and Pension Benefit Plans. She holds a B.A. from Cambridge University and a Ph.D. in economics from Columbia University.
The primary purpose of the microeconomics core course is to enable you to use microeconomic thinking, concepts and tools in your professional public service work. Accomplishing this also requires refreshing and strengthening your quantitative skills.
The course begins with the basics of supply and demand and market operations, and uses this as the context for considering consumer and organizational decisions within a given market structure. The course builds to applying economic analysis to a variety of public issues such as the effects of taxation, the market structure of health care, the impacts of the minimum wage, the effects of international trade and various approaches to environmental externalities.
By the end of the course you should be able to articulate the economic context and analysis of a public problem, use economic concepts in managerial and policy decisions, and progress to second level courses confident of your understanding of microeconomics and its tools.
The primary purpose of the microeconomics core course is to enable you to use microeconomic thinking, concepts and tools in your professional public service work. Accomplishing this also requires refreshing and strengthening your quantitative skills.
The course begins with the basics of supply and demand and market operations, and uses this as the context for considering consumer and organizational decisions within a given market structure. The course builds to applying economic analysis to a variety of public issues such as the effects of taxation, the market structure of health care, the impacts of the minimum wage, the effects of international trade and various approaches to environmental externalities.
By the end of the course you should be able to articulate the economic context and analysis of a public problem, use economic concepts in managerial and policy decisions, and progress to second level courses confident of your understanding of microeconomics and its tools.
The primary purpose of the microeconomics core course is to enable you to use microeconomic thinking, concepts and tools in your professional public service work. Accomplishing this also requires refreshing and strengthening your quantitative skills.
The course begins with the basics of supply and demand and market operations, and uses this as the context for considering consumer and organizational decisions within a given market structure. The course builds to applying economic analysis to a variety of public issues such as the effects of taxation, the market structure of health care, the impacts of the minimum wage, the effects of international trade and various approaches to environmental externalities.
By the end of the course you should be able to articulate the economic context and analysis of a public problem, use economic concepts in managerial and policy decisions, and progress to second level courses confident of your understanding of microeconomics and its tools.
Open only to students in the MSPP program. This intensive course will provide students with:
- An understanding of basic statistics principles
- Familiarity with Stata
- Experience manipulating data and reading outputs in different formats
- A working knowledge of basic microeconomics concepts
This course is pass/fail.
The Economics of Public Policy analyzes the impact of public policy on the allocation of resources and the distribution of income in the economy. In this course, you will learn how to use the tools of microeconomics and empirical analysis to answer these questions: When should the government intervene in the economy? How might the government intervene? And, what are the effects of those interventions on economic outcomes? The course will include topics such as: income distribution and welfare programs, taxation and tax reform, government debt, market failures, Social Security, unemployment insurance and health insurance.
The primary purpose of the microeconomics core course is to enable you to use microeconomic thinking, concepts and tools in your professional public service work. Accomplishing this also requires refreshing and strengthening your quantitative skills.
The course begins with the basics of supply and demand and market operations, and uses this as the context for considering consumer and organizational decisions within a given market structure. The course builds to applying economic analysis to a variety of public issues such as the effects of taxation, the market structure of health care, the impacts of the minimum wage, the effects of international trade and various approaches to environmental externalities.
By the end of the course you should be able to articulate the economic context and analysis of a public problem, use economic concepts in managerial and policy decisions, and progress to second level courses confident of your understanding of microeconomics and its tools.
The primary purpose of the microeconomics core course is to enable you to use microeconomic thinking, concepts and tools in your professional public service work. Accomplishing this also requires refreshing and strengthening your quantitative skills.
The course begins with the basics of supply and demand and market operations, and uses this as the context for considering consumer and organizational decisions within a given market structure. The course builds to applying economic analysis to a variety of public issues such as the effects of taxation, the market structure of health care, the impacts of the minimum wage, the effects of international trade and various approaches to environmental externalities.
By the end of the course you should be able to articulate the economic context and analysis of a public problem, use economic concepts in managerial and policy decisions, and progress to second level courses confident of your understanding of microeconomics and its tools.
Open only to students in the MSPP program. This intensive course will provide students with:
- An understanding of basic statistics principles
- Familiarity with Stata
- Experience manipulating data and reading outputs in different formats
- A working knowledge of basic microeconomics concepts
This course is pass/fail.
The primary purpose of the microeconomics core course is to enable you to use microeconomic thinking, concepts and tools in your professional public service work. Accomplishing this also requires refreshing and strengthening your quantitative skills.
The course begins with the basics of supply and demand and market operations, and uses this as the context for considering consumer and organizational decisions within a given market structure. The course builds to applying economic analysis to a variety of public issues such as the effects of taxation, the market structure of health care, the impacts of the minimum wage, the effects of international trade and various approaches to environmental externalities.
By the end of the course you should be able to articulate the economic context and analysis of a public problem, use economic concepts in managerial and policy decisions, and progress to second level courses confident of your understanding of microeconomics and its tools.
Open only to students in the MSPP program. This intensive course will provide students with:
- An understanding of basic statistics principles
- Familiarity with Stata
- Experience manipulating data and reading outputs in different formats
- A working knowledge of basic microeconomics concepts
This course is pass/fail.
2024
Between 2020-2021, the U.S. federal government passed four major pieces of legislation that included nearly $1 trillion in aid to state and local governments. One concern with distributing federal stimulus in the form of intergovernmental transfers is that subnational governments may use the aid to pay down unfunded pension liabilities or other debt rather than preserve employment. We examine the effect of fiscal stimulus passed in response to Covid-19 on public pensions. To address concerns about endogeneity, we use a difference-in-difference design and an instrumental variable estimator that relies on variation in congressional representation. We find that “excess” pension contributions increased, but that these increases were very small as a share of total pension spending. We also find that governments reacted to pandemic aid by adopting more conservative assumptions for the calculation of pension liabilities.
2021
This paper documents how the decisions of young adults to return to live with their parents (‘boomerang’) may contribute to low or declining levels of out-migration from weak labor markets. Using the Panel Study of Income Dynamics and a locational choice model, we find that the likelihood of a non-boomerang location being chosen by a young adult increases with local wages, while wages have a much smaller effect on selecting the boomerang option. In addition, the likelihood that a boomerang location is selected actually increases with the location's unemployment rate. The lower sensitivity of boomerang moves to positive labor market features is substantive in magnitude. We document two distinct ways in which boomerang moves dampen labor market adjustments. Among young adults living in the same labor market as their parent, simulated negative labor market shocks in the form of increases in unemployment accompanied by decreases in wages result in a greater increase in boomeranging than leaving the labor market, hence a residential rather than labor market adjustment. Among young adults living in a different labor market than their parent, boomerang moves are more likely to result in worse destination labor markets than are non-boomerang moves, though a large share of both types of moves are to weaker labor markets.
This paper documents a linkage between two empirical trends: the low levels of out-migration from weak labor markets, and the increasing rate at which young adults return to live with their parents (‘boomerang’). Using the American Community Survey, we show that boomerang moves are more likely to bring young adults to labor markets with higher unemployment and lower wages. Using the geocoded Panel Study of Income Dynamics and a locational choice model, we find that the likelihood of a non-boomerang location being chosen by a young adult increases with local wages. However, for boomerang moves, wages have zero or a much smaller effect on the selection of locations, and the likelihood that a boomerang location is selected actually increases with the location’s unemployment level. This positive correlation with unemployment is substantive in magnitude and is highest for those without a college degree and for non-whites.
2019
This paper connects two empirical trends: (i) the decline in geographic mobility and responsiveness to labor demand shocks, even among young adults who have historically been the most mobile, and (ii) the increased share of young adults co-residing with parents. Using data on young adults aged 18 to 35 from the American Community Survey and the Panel Study of Income Dynamics, we examine three outcomes: parental coresidence, transitioning out from living with a parent, and “boomerangs” - returning to live with a parent after living elsewhere. Our results demonstrate the importance of the parental coresidence option in understanding the location decisions of young adults. In particular, we find evidence that boomerang decisions may be insensitive to the labor market conditions that come with returning to the parents’ home, hence boomerang moves are more likely to result in residing in a labor market with higher unemployment rates. This raises some concerns for the future labor market prospects of young adults, particularly Hispanic young adults aged 18 to 23 years old and black young adults of any age, whose boomerang moves showed the greatest likelihood of being towards weaker labor markets.
2018
Using panel data from 2000 to 2012, we show that unanticipated zip code-level shocks to home values affect retirement, retirement reversals, and Social Security claims. Among older men, homeowners experiencing moderately negative housing price shocks are less likely to retire, more likely to reverse retirement in some cases, and more likely to delay claiming Social Security relative to those experiencing positive shocks. We find similar responses among specific subgroups of older women, though not in general. Overall, our results imply that adverse housing shocks have substantial influence on labor market participation for older individuals.
2017
We use the American Housing Survey to examine the distribution and occupancy of homes that have, or could be modified to have, accessibility features that allow seniors to successfully remain in the community as they age. Despite the aging population and the growing need for accessible housing, the U.S. housing stock is woefully inadequate: fewer than 4% of housing units could be considered livable by people with moderate mobility difficulties, and a miniscule fraction are wheelchair accessible. Recent construction is no more likely to be accessible than homes built in the mid-1990s, suggesting that the housing market is not responding to the aging demographic profile. Only a small fraction of seniors, even among those with mobility difficulties, and even among recent movers, live in suitable homes. Modifications that potentially improve accessibility are more likely undertaken by households with a senior, but only once that senior develops mobility difficulties.
This paper examines homeowners’ self-reported values in the American Housing Survey and the Health and Retirement Study from the start of the recent housing price run-ups through recent price declines. We compare zip code level market-based estimates of housing prices to those derived from homeowners’ self-reported values. We show that there are systematic differences which vary with market conditions and the amount of equity owners hold in their homes. When prices have fallen, homeowners systematically state that their homes are worth more than market estimates suggest, and homeowners with little or no equity in their homes state values above the market estimates to a greater degree. Over time, homeowners appear to adjust their assessments to be more in line with past market trends, but only slowly. Our results suggest that underwater borrowers are likely to understate their losses and either may not be aware that their mortgages are underwater or underestimate the degree to which they are.
2015
This chapter considers the structure of mortgage finance in the United States and its role in shaping patterns of homeownership, the nature of the housing stock, and the organization of residential activity. We start by providing some background on the design features of mortgage contracts that distinguish them from other loans and that have important implications for issues presented in the rest of the chapter. We then explain how mortgage finance interacts with public policy, particularly tax policy, to influence a household's decision to own or rent and how shifts in the demand for owner-occupied housing are translated into housing prices and quantities, given the unusual nature of housing supply. We consider the distribution of mortgage credit in terms of access and price, by race, ethnicity, and income, and over the life cycle, with particular attention to the role of recent innovations such as nonprime mortgage securitization and reverse mortgages. The extent of negative equity has been unprecedented in the past decade, and we discuss its impact on strategic default, housing turnover, and housing investment. We describe spatial patterns in foreclosure and summarize the evidence for foreclosure spillovers in urban neighborhoods. Finally, we offer some thoughts on future innovations in mortgage finance.
The mortgage default decision is part of a complex household credit management problem. We examine how factors affecting mortgage default spill over to other credit markets. As home equity turns negative, homeowners default on mortgages and HELOCs at higher rates, whereas they prioritize repaying credit cards and auto loans. Larger unused credit card limits intensify the preservation of credit cards over housing debt. Although mortgage non-recourse statutes increase default on all types of housing debt, they reduce credit card defaults. Foreclosure delays increase default rates for both housing and non-housing debts. Our analysis highlights the interconnectedness of debt repayment decisions.
The American Housing Survey (AHS) is the most comprehensive national housing survey in the United States. Since 2009, AHS has included six core disability questions used in the American Community Survey. The questions address hearing, visual, cognitive, ambulatory, self-care, and independent living difficulties for each household member. For 2011, AHS added a topical module on accessibility. The module asked about the presence of accessibility features in housing units, including wheelchair accessibility features, and whether the accessibility features were used or not. Together, these data provide an unprecedented opportunity to examine the accessibility of the U.S. housing stock and to ask whether people with disabilities reside in accessible homes.
In this report, we present summary measures of housing accessibility based on the 2011 AHS. To develop these summary measures, we examined United States (U.S.) and international standards and regulations regarding housing accessibility, reviewed the relevant literature, and conducted interviews with a set of disability and housing design experts. These interviews are further described in appendix A. Based on these summary measures, we describe how accessibility varies by housing market characteristics as well as resident characteristics such as age, disability status, and income. We also present evidence on the relationship between the need for and availability of accessible housing units, taking affordability of accessible units into account.
2014
We use a detailed dataset of seriously delinquent mortgages to examine the dynamic process of mortgage default—from initial delinquency and default to final resolution of the loan and disposition of the property. We estimate a two-stage competing risk hazard model to assess the factors associated with post-default outcomes, including whether a borrower receives a legal notice of foreclosure. In particular, we focus on a borrower’s ability to avoid a foreclosure auction by getting a modification, by refinancing the loan, or by selling the property. We find that the outcomes of the foreclosure process are significantly related to: loan characteristics including the borrower’s credit history, current loan-to-value and the presence of a junior lien; the borrower’s post-default payment behavior, including the borrower’s participation in foreclosure counseling; neighborhood characteristics such as foreclosure rates, recent house price depreciation and median income; and the borrower’s race and ethnicity.
Using a rich database of non-prime mortgages from New York City, we find that census tract level neighborhood characteristics are important predictors of default behavior, even after controlling for an extensive set of controls for loan and borrower characteristics. First, default rates increase with the rate of foreclosure notices and the number of lender-owned properties (REOs) in the tract. Second, default rates on home purchase mortgages are higher in census tracts with larger shares of black residents, regardless of the borrower’s own race. We explore possible explanations for this second finding and conclude that it likely reflects differential treatment of black neighborhoods by the mortgage industry in ways that are unobserved in our data.
Because traditional Medicare leaves substantial gaps in coverage, many people obtain supplemental coverage to limit their exposure to out-of-pocket costs. However, some Medicare beneficiaries may not be well equipped to navigate the complex supplemental coverage landscape successfully because of their lower cognitive ability or numeracy—that is, the ability to work with numbers. We found that people in the lower third of the cognitive ability and numeracy distributions were at least eleven percentage points less likely than those in the upper third to enroll in a supplemental Medicare insurance plan. This result means that many Medicare beneficiaries do not have the financial protections and other benefits that would be available to them if they were enrolled in a supplemental insurance plan. Our findings suggest that policy makers may want to consider alternatives tailored to these high-need groups, such as enhanced education and enrollment programs, simpler sets of plan choices, or even some type of automatic enrollment with an option to decline coverage.
This chapter examines the fiscal challenge posed by the aging of the U.S. population. We summarize the likely future of U.S. demographics, focusing on the evolution of the dependency ratio. We describe the main U.S. government programs related to aging and assess their fiscal positions. Forecasts for the unfunded liabilities in these programs exceed $40 trillion. We provide a review of economic theory useful for understanding the likely economic impact of budget deficits. We evaluate the fiscal adjustment that is likely to be needed given the 2009 status of the U.S. fiscal position and predicted demographic changes: it is likely to be approximately 8% of GDP, which, while large, is an adjustment that has been managed by many countries in the past. Finally, we provide a brief survey of potential policies to address the fiscal challenge of aging, and of economic research evaluating such policies.
2008
This paper provides an answer to an important empirical puzzle in the retirement literature: while most people know little about their own pension plans, retirement behavior is strongly affected by pension incentives. We combine administrative and self-reported pension data to measure the retirement response to actual and perceived financial incentives and document an important role for self-reported pension data in determining retirement behavior. Well-informed individuals are far more responsive to pension incentives than the average individual. Ill-informed individuals seem to respond systematically to their own misperceptions of pension incentives.