Research Papers

We introduced a method to estimate the cost of adjusting earnings and the earnings elasticity with respect to the net-of-tax share, using bunching in the earnings distribution at convex budget set kinks before and after policy changes.

We sought to explore the relationship between tax policy changes and earnings adjustments, specifically focusing on the Social Security Earnings Test, to provide a clearer understanding of the behavioral responses to tax rate changes.

Our results highlight that adjustment costs can significantly dampen the short-run effects of changes in effective marginal tax rates, offering crucial insights for policymakers on the efficiency and impact of tax policy adjustments.

We designed and implemented a comprehensive workplace wellness program for a large employer with over 12,000 employees, randomly assigning program eligibility and financial incentives at the individual level.

We sought to determine whether workplace wellness programs effectively reduce medical spending, boost productivity, and improve employee well-being, addressing the gap in evidence supporting these claims.

Our results indicate that while these programs may not directly reduce costs or enhance productivity, they could still benefit employers by attracting and retaining healthier, lower-cost employees, potentially leading to net savings.

We employed a novel rank-based index of stratification to measure how occupational classes occupy distinct, non-overlapping, hierarchical layers in the US income distribution from 1980 to 2016.

We aimed to address the gap in empirical studies that focus on inequality rather than stratification. By developing a rank-based stratification index, we sought to accurately capture class stratification and provide insights into the structural dynamics of the US income distribution over time, enhancing the understanding of class structure and social stratification.

Our findings show a substantial increase in class stratification in the US from 1980 to 2016, driven by factors like income returns to education, deunionization, and deindustrialization. These results highlight growing economic divides based on occupational class, informing theories of class structure and guiding policies to reduce economic stratification and promote social mobility.

We developed a method to estimate the effect of kinked or notched budget sets on workers’ employment decisions and applied it to the Social Security Old-Age and Survivors Insurance (OASI) Annual Earnings Test (AET).

We aimed to understand how the AET, which reduces OASI benefits based on earnings, influences employment rates, using a Regression Kink Design and Social Security Administration data.

Our findings show that the AET significantly reduces employment, providing valuable insights for policymakers on the labor market effects of benefit reduction policies.

We empirically evaluated critiques of class analysis related to aggregate classes defined by workplace ownership and authority relations. We examined whether these classes differ from those based on the technical division of labor and assessed class differences in life conditions and political attitudes over time.

We aimed to address arguments that class differences have declined or decomposed into smaller occupational differences. By focusing on aggregate classes based on workplace ownership and authority, we sought to clarify whether these class distinctions remain significant and distinct from those based on the technical division of labor.

Our findings show that aggregate ownership-and-authority class differences in life conditions and political attitudes are significant and persistent, even within disaggregate occupational classes. These results challenge claims about the decline or decomposition of class perspectives and highlight the continued relevance of class analysis in understanding social and economic inequalities.

We investigated the effects of merit aid scholarship programs on the migratory patterns and educational outcomes of skilled labor, using Census data on 24 to 32-year-olds in the U.S. from 1990 to 2010.

We aimed to understand whether subsidizing higher education through merit aid can retain high-achieving students in-state and influence their long-term residency and educational attainment.

Our findings suggest that while merit aid slightly increases the likelihood of state natives remaining in-state and extends in-state enrollment, it does not significantly change the share of a cohort living in-state with a BA, questioning the overall effectiveness of such programs in altering skilled labor migration.

We examined the impact of pension plan type on employee mobility by leveraging a natural experiment where an employer transitioned from a defined benefit (DB) plan to a defined contribution (DC) plan, influenced by default rules.

We aimed to determine if the observed relationship between plan type and employee mobility is due to selection, where employees with higher mobility tendencies may self-select into DC plans.

Our findings reveal that employees with higher mobility tendencies indeed self-select into DC plans, providing important insights for employers and policymakers about the role of pension plan types in workforce dynamics and mobility.

We developed a theory of social class based on workplace ownership and authority relations and examined its link to growth in personal income inequality since the 1980s.

We aimed to establish a theoretical framework linking social class to income inequality trends and empirically investigate these dynamics over time. By focusing on between-class income differences, class size variations, and income dispersion within classes, we sought to identify key factors driving the growth in personal income inequality.

Our findings reveal a significant increase of about 60% in between-class income differences since the 1980s, with the relative size of different social classes remaining stable. Decomposition analysis indicates that these income differences substantially contributed to rising personal income inequality, underscoring the importance of class-based perspectives in understanding economic disparities.

We investigated the impact of “shall-issue” right-to-carry laws, which guarantee concealed carry permits to qualified applicants, on violent and property crime rates.

Our findings can inform policy decisions on gun control and potential consequences of changes to gun laws.

We contribute to ongoing debates about gun violence and provide nuanced evidence on the complex relationship between gun laws and crime rates.

We critically examined Thomas Piketty’s book “Capital in the Twenty-First Century” and its arguments about rising wealth inequality.

We wanted to provide an alternative perspective on wealth inequality and assess the validity of Piketty’s claims and policy prescriptions.

We offer a valuable contribution to the ongoing debate about wealth inequality and challenges some of Piketty’s central arguments.