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Questions and Answers

Assuming a constant marginal propensity to consume and utilizing a permanent income hypothesis framework, how would the observed stability of the wealth effect on earnings, as depicted in Figure 1, be affected if individuals systematically underestimated the persistence of their lottery winnings?

  • The observed effect would exhibit increased volatility, characterized by unpredictable spikes and drops reflecting belief revisions.
  • The observed effect would be amplified initially, followed by a gradual reversion to zero as individuals update their beliefs.
  • The observed effect would remain unchanged, as the permanent income hypothesis posits rational expectations and perfect foresight.
  • The observed effect would be dampened initially, with a subsequent increase as individuals realize the permanence of their winnings. (correct)

Within the context of the provided study, if a significant portion of lottery winners experienced a simultaneous, exogenous shock that negatively impacted their non-labor income specifically, how would this influence the interpretation of Figure 1 regarding the wealth effect on labor earnings, assuming labor and leisure are normal goods?

  • It would not affect the interpretation, as the difference-in-differences design controls for any common shocks affecting lottery winners.
  • It would lead to an overestimation of the true wealth effect, as individuals increase labor supply to compensate for the loss in non-labor income. (correct)
  • It would lead to an underestimation of the true wealth effect, as individuals decrease labor supply due to the combined effect of the lottery winnings and the negative shock.
  • It would create a spurious correlation, making it impossible to isolate the true wealth effect from the effect of the non-labor income shock.

Assuming lottery winnings are subject to a progressive tax system with bracket creep, and individuals fail to fully anticipate this effect when making labor supply decisions, how would the observed labor supply response to lottery wealth be affected in the years following the win?

  • The labor supply response would become more elastic, as individuals become more sensitive to changes in their marginal tax rate.
  • The reduction in labor supply would be smaller than anticipated, as the higher tax bracket partially offsets the wealth effect. (correct)
  • The reduction in labor supply would be larger than anticipated, as individuals attempt to maintain their pre-lottery disposable income level.
  • There would be no change in labor supply, as the progressive tax system only affects individuals with very high incomes.

Counterfactually, imagine the Swedish government introduced a universal basic income (UBI) scheme shortly after the lottery winnings were distributed. How would this contemporaneous policy intervention likely affect the estimated wealth effect on labor earnings, and what econometric strategy could best isolate the lottery wealth effect from the UBI's impact?

<p>The UBI would attenuate the estimated wealth effect, and a difference-in-differences approach comparing lottery winners to non-winners before and after the UBI implementation would be most appropriate. (A)</p> Signup and view all the answers

Suppose that a subset of lottery winners, driven by behavioral biases like loss aversion, exhibit a tendency to maintain their pre-winning consumption levels, viewing the lottery winnings as "found money" to be saved or invested but not integrated into their regular budget. How would this behavior likely influence the observed effect of wealth on labor earnings in Figure 1, and what econometric technique could be employed to test for this heterogeneous effect?

<p>The observed effect would be attenuated or even reversed, as these individuals maintain their pre-winning labor supply to sustain their consumption habits. (C)</p> Signup and view all the answers

Given a pooled sample of lottery participants comprising PLS, Kombi, Triss-Lumpsum, and Triss-Monthly lottery players, and considering the prevalence of small, frequent wins among PLS participants, how would the Gini coefficient of prize winnings likely change if calculated only for first-time lottery winners across all lottery types, assuming prize amounts remain constant?

<p>The change in the Gini coefficient is indeterminate without additional information regarding the specific prize tiers and frequencies within each lottery type, precluding generalized conclusions. (A)</p> Signup and view all the answers

Assuming the lottery data spans a period during which significant macroeconomic shifts occurred, like fluctuating real interest rates or changes in income tax policies, which econometric technique would be most appropriate to isolate the pure causal effect of lottery winnings on labor supply decisions, controlling for both observed and unobserved heterogeneity?

<p>An instrumental variable (IV) approach using plausibly exogenous variations in lottery rules or prize structures as instruments for actual winnings, combined with individual fixed effects. (A)</p> Signup and view all the answers

Given that the dataset identifies 98.7% of lottery participants using name, age, and address, what potential bias might arise from the 1.3% of unidentified participants, and how could this bias affect the estimation of the effect of wealth on labor supply?

<p>A selection bias may arise if unidentified participants systematically differ in socioeconomic characteristics or labor market attachment, thereby skewing wealth effects and rendering the sample unrepresentative. (D)</p> Signup and view all the answers

Assuming the marginal propensity to consume (MPC) out of lottery wealth varies substantially across different prize tiers (e.g., individuals winning small prizes exhibit a higher MPC than those winning large prizes), which technique would be most appropriate for precisely estimating the aggregate impact of lottery wealth on aggregate consumption at the population level?

<p>Employing a heterogeneous agent model with calibrated MPCs for each prize tier, simulating the aggregate consumption response to the observed lottery prize distribution. (C)</p> Signup and view all the answers

Given that the study uses a discount rate of 1.9% to match the historical real interest rate in Sweden, how would incorporating a time-varying discount rate, reflecting fluctuations in macroeconomic conditions and individual risk preferences, likely impact the estimated long-term effect of lottery wealth on retirement decisions?

<p>The impact is theoretically ambiguous and depends on the correlation between individual risk preferences, macroeconomic conditions, and the timing of retirement decisions, precluding generalized predictions. (A)</p> Signup and view all the answers

Assuming that lottery winnings are not perfectly observed due to potential underreporting or strategic concealment by winners, which econometric method would be most appropriate to address this measurement error and obtain consistent estimates of the true effect of wealth on labor supply?

<p>A maximum likelihood estimation (MLE) approach assuming a specific distribution for the measurement error and jointly estimating the parameters of the wealth-labor supply relationship and the error process. (D)</p> Signup and view all the answers

Suppose the lottery winnings data are right-censored at a certain high prize level due to confidentiality reasons. How could one estimate the impact of lottery wealth on labor supply while addressing this censoring issue, accounting for potential non-linear effects of wealth?

<p>Use a Tobit model with a non-parametric specification for the labor supply function to allow for flexible functional forms, while accounting for the censoring. (C)</p> Signup and view all the answers

Within the context of the provided regression equation, what is the most precise interpretation of the error term, $\epsilon_{i,0}$, assuming the model is correctly specified?

<p>It reflects purely random noise, devoid of any systematic relationship with the independent variables, ensuring unbiased and efficient estimation of parameters. (D)</p> Signup and view all the answers

If the Nordic country indicator exhibits significant collinearity with the age polynomial in the baseline controls during the test for random assignment, what is the most likely consequence for the regression analysis?

<p>The standard errors for the coefficients of the Nordic indicator and the age polynomial will be inflated, reducing the precision of the estimates and potentially leading to Type II errors. (B)</p> Signup and view all the answers

In assessing the external validity of lottery studies, reweighting population samples to match the age and sex distribution of lottery winners is intended to mitigate which specific form of bias?

<p>Compositional bias induced by systematic differences in demographic attributes between lottery participants and the general population. (D)</p> Signup and view all the answers

Assuming that lottery prizes are found not to be randomly assigned, and are instead correlated with unobserved determinants of pre-tax annual labor earnings, what econometric strategy would most effectively address the resulting endogeneity?

<p>Implementing an instrumental variable (IV) approach, using an exogenous variable that affects lottery winnings but not the outcome variable directly. (A)</p> Signup and view all the answers

If the variance of the error term, $\epsilon_{i,0}$, in equation (1) is found to be heteroskedastic, what is the most appropriate course of action to ensure valid statistical inference?

<p>Estimate the regression using weighted least squares (WLS), using the inverse of the estimated variance as weights. (B)</p> Signup and view all the answers

Considering the potential for lottery players to underreport their winnings due to privacy concerns or strategic reasons, how would non-classical measurement error in $L_{i,0}$ likely affect the estimated coefficient on $Z_{i,-1}$ in equation (1)?

<p>The direction of the bias is unpredictable and depends on the correlation between the measurement error and the true value of $Z_{i,-1}$. (A)</p> Signup and view all the answers

What is the most compelling reason to include cell fixed effects, $X_{i,0}$, in equation (1) when testing for violations of conditional random assignment?

<p>To control for unobserved heterogeneity across different lottery types or geographic regions that might influence both winnings and baseline characteristics. (D)</p> Signup and view all the answers

If the distributions of pre-tax annual labor earnings are highly skewed in both the lottery player sample and the reweighted representative sample, which statistical measure would provide the most robust comparison of central tendency between the two groups?

<p>The median, as it is less sensitive to outliers and better reflects the typical earnings level. (A)</p> Signup and view all the answers

Assuming that lottery play is habit-forming and that prior lottery losses increase the propensity to participate in subsequent lotteries, what econometric problem is most likely to arise when estimating the effect of lottery winnings on subsequent labor supply using observational data?

<p>Omitted variable bias, where unobserved characteristics that influence lottery play also influence labor supply decisions. (A)</p> Signup and view all the answers

Given the constraint $β_t = β$ imposed on the wealth shock response, and considering the context of analyzing individual-level responses to lottery wealth shocks, what critical assumption must hold true for the validity of subsequent econometric analyses?

<p>The absence of significant anticipatory effects, where individuals do not alter their labor supply decisions in anticipation of receiving lottery winnings. (D)</p> Signup and view all the answers

In the context of analyzing heterogeneous effects by interacting lottery prize amounts ($L_{i,0}$), cell fixed effects ($X_i$), and controls ($Z_{i,-s}$) with a sub-population indicator variable, what specific econometric concern arises if the sub-population exhibits perfect sorting across cells?

<p>Inconsistent estimation of treatment effects due to perfect multicollinearity between the sub-population indicator and the cell fixed effects ($X_i$). (C)</p> Signup and view all the answers

When decomposing the total wealth effect on earnings into extensive- and intensive-margin adjustments related to labor supply, which methodological consideration is paramount to avoid spurious attribution of effects?

<p>Addressing the potential for simultaneity bias arising from the endogeneity of hours worked and wages through instrumental variable techniques. (D)</p> Signup and view all the answers

Given the major tax reform in Sweden during 1990-1991, what econometric strategy would be most effective in mitigating potential biases arising from the joint taxation of capital and labor incomes prior to the reform, when analyzing wealth effects on labor supply?

<p>Estimate a structural model of labor supply that explicitly accounts for the non-linear tax schedule and the joint taxation of income sources. (D)</p> Signup and view all the answers

In the described analysis, all income variables are winsorized at the 0.5th and 99.5th percentiles. What specific econometric concern does this winsorization address, and what potential bias could arise if this step were omitted?

<p>Winsorization mitigates the influence of outliers on regression estimates, preventing disproportionate effects of extreme values on coefficient estimates and standard errors. (C)</p> Signup and view all the answers

Considering the use of population-wide registers originally collected by tax authorities, what source of systematic measurement error is most likely to affect the validity of inferences regarding individual labor supply responses?

<p>The presence of tax avoidance strategies that artificially reduce reported income, particularly among high-income individuals who have access to sophisticated financial planning. (C)</p> Signup and view all the answers

What is the most significant threat to internal validity when estimating treatment-effect heterogeneity by interacting lottery winnings with pre-existing individual characteristics?

<p>Spurious correlation arising from multiple hypothesis testing if a large number of pre-existing characteristics are examined without adjusting for family-wise error rate. (A)</p> Signup and view all the answers

Assuming that lottery winnings are reported net of taxes, and that marginal tax rates vary significantly across the income distribution, what econometric adjustment is most critical when estimating the causal effect of lottery wealth shocks on pre-tax labor income?

<p>Grossing up reported lottery winnings using individual-specific marginal tax rates to approximate the pre-tax value of the wealth shock. (C)</p> Signup and view all the answers

Suppose a researcher finds statistically significant nonlinear effects of lottery wealth on labor supply. What theoretical explanation would BEST reconcile these findings, assuming standard economic models fail to predict such nonlinearities?

<p>Behavioral biases, such as mental accounting or loss aversion, which cause individuals to treat lottery winnings differently depending on the size of the prize. (A)</p> Signup and view all the answers

Given the potential for lottery winnings to be used for investment in human capital, which analytical approach is MOST suitable for disentangling the direct labor supply effects of wealth from the indirect effects operating through human capital accumulation?

<p>A mediation analysis framework that estimates the direct effect of lottery winnings on labor supply, as well as the indirect effect mediated through changes in educational attainment or skills. (D)</p> Signup and view all the answers

Consider the econometric specification in equation (2). What potential bias could arise if $L_{i,0}$ is, in fact, not independent of potential outcomes, even conditional on $X_{i,0}$, and how might this compromise the causal interpretation of $\beta_t$?

<p>Selection bias, where individuals with a higher propensity to win the lottery also systematically differ in unobserved characteristics that affect labor supply, resulting in $\beta_t$ capturing a combination of the wealth effect and the impact of these selection factors. (C)</p> Signup and view all the answers

Given the estimation strategy outlined, what specific econometric challenge arises when estimating the dynamic effects of a wealth shock using OLS, and what methodological refinement could mitigate this issue?

<p>Autocorrelation in the error terms, given the panel structure of the data, leading to inefficient estimates and biased standard errors, which can be addressed using a dynamic panel data model with a generalized method of moments (GMM) estimator. (B)</p> Signup and view all the answers

In the context of estimating equation (2), what is the most critical assumption required for the validity of Ordinary Least Squares (OLS) estimation, and how might a violation of this assumption manifest in the estimated coefficients?

<p>Exogeneity of the lottery prize ($L_{i,0}$), implying that it is uncorrelated with the error term ($\epsilon_{i,t}$), a violation of which would manifest as biased and inconsistent estimates of $\beta_t$ due to omitted variable bias. (A)</p> Signup and view all the answers

Given the focus on the dynamic effects of wealth, why is controlling for lagged outcomes ($Z_{i,s}$) crucial in equation (2), and what specific econometric problem does it address?

<p>Controlling for pre-existing trends in labor supply, ensuring that the estimated coefficients reflect the true impact of the lottery winnings rather than simply capturing pre-existing differences in labor market trajectories. (C)</p> Signup and view all the answers

How does clustering standard errors at the individual level impact the statistical inference in this study, and under what specific condition is this approach most appropriate?

<p>It corrects for heteroskedasticity and autocorrelation within individuals over time, providing more accurate standard errors, which is appropriate when there are repeated observations for the same individuals. (A)</p> Signup and view all the answers

Why is it crucial to examine pre-lottery years for significant differences in outcomes between those who win large versus small prizes, and what specific threat to internal validity does this address?

<p>To rule out pre-existing differences in labor supply between the two groups, which, if present, would suggest that lottery winnings are not randomly assigned and undermine the causal interpretation of the results. (B)</p> Signup and view all the answers

If the analysis reveals significant differences in pre-treatment characteristics despite the expectation of independence conditional on $X_{i,0}$, what alternative identification strategy could be employed to salvage causal inference, and what assumptions would it require?

<p>Instrumental variables (IV) estimation, using an exogenous factor that affects lottery winnings but not labor supply directly, assuming that the instrument is relevant and satisfies the exclusion restriction. (B)</p> Signup and view all the answers

What econometric issue arises from including person-year observations for $t = 1, ..., 5$ and baseline controls measured in the year prior to the lottery ($s = -1$) in a modified version of equation (2), and how would you test for it?

<p>Overlapping observations, where post-lottery outcomes are correlated across time for the same individual, leading to biased standard errors, which can be tested using a Breusch-Godfrey test for serial correlation. (A)</p> Signup and view all the answers

Suppose the variance of lottery winnings is significantly different across different lottery types (PLS, Kombi, Triss). How could this heteroskedasticity affect the OLS estimates of (\beta_t), and what method could address this?

<p>It would cause the standard errors to be unreliable, leading to incorrect inferences, which can be addressed either by using heteroskedasticity-robust standard errors or by employing weighted least squares (WLS). (B)</p> Signup and view all the answers

In the analysis of lottery winners' labor supply, what are the relative strengths and weaknesses of using cell fixed effects ($X_{i,0}$) versus individual fixed effects, especially considering the time horizon is limited to ten years post-lottery?

<p>Cell fixed effects can control for time-invariant unobserved heterogeneity at a broader geographic level but may not capture individual-specific effects; individual fixed effects can control for all time-invariant individual heterogeneity but may be less efficient due to the short time period. (D)</p> Signup and view all the answers

Flashcards

Observations Count

The total number of lottery wins observed in the combined dataset.

Unique Individuals

The number of unique individuals who won lottery prizes within the observation period identified by name, age, and address.

PLS Lottery

A lottery where players win small prizes several times.

Prize Distribution

The distribution of lottery prizes across different value ranges (e.g., 0 to 1K SEK, 1K to 10K SEK).

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Share of Prizes

The percentage of lottery prizes falling within a specific range compared to the total prizes.

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Kombi Lottery

A lottery type included in the pooled sample, alongside PLS, Kombi, Triss-Lumpsum and Triss-Monthly.

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Triss-Lumpsum Lottery

A lottery where winnings are paid out as one single payment.

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t = 0

The time the lottery was won, normalized to zero in the estimation strategy.

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yi,t

An individual i's outcome of interest at time t. Measured yearly for 10 years beginning at t=0.

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Li,0

The lottery prize won by individual i at time 0.

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Xi,0

A vector of cell fixed effects.

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Zi,s

Includes lagged outcome of the dependent variable plus pre-lottery characteristics.

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OLS

Estimation method used in the equation (2)

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Coefficient estimates

Plots showing the dynamic effects of a wealth shock on labor supply over time.

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Pre-lottery years

Verifies that there are no differences in pre-treatment characteristics of players who won the lottery.

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s = -1

The number of years before the lottery win that the pre-lottery characteristics are measured.

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εi,t

Random error for individual i at time t.

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Conditional Random Assignment Test

Testing if random assignment holds up even when we account for certain conditions and controls. If assignment is truly random, these baseline characteristics shouldn't significantly predict lottery winnings.

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Cell Fixed Effects

Cell fixed effects capture the average differences across different groups or categories (cells). These differences are kept constant when conducting regression analysis.

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Baseline Controls

Variables representing background characteristics, such as sex, country of birth, education, income, and age, measured before the lottery win.

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Null Hypothesis (in this context)

The hypothesis that wealth (lottery winnings) is assigned randomly to individuals after accounting for fixed effects. Meaning characteristics don't predict winnings.

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External Validity

The degree to which the findings from a study can be applied to other populations or settings.

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Representativeness Concern (Lottery Studies)

Lottery players might not be representative of the general population.

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Reweighting Samples

Adjusting a sample to match the characteristics of another population.

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Specificity of Wealth Shock

Even if lottery players resemble the population, lottery winnings might have unique effects compared to other forms of wealth.

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Wealth Shock

A sudden and unexpected change in someone's financial situation, whether positive (like winning the lottery) or negative.

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Pretax Labor Earnings

Pretax labor earnings is a composite variable mainly from annual wage earnings, self-employment income, and income support (parental leave or sickness absence).

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Impact of Lottery Wealth

The effect of lottery wealth on earnings is immediate, modest, and stable.

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Estimating Wealth Effect

The effect of wealth on earnings is estimated using regression analysis over several years relative to winning.

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Earnings Before Winning

Prior to winning, the estimated effects on earnings are statistically close to zero.

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Labor Adjustment Post-Win

The quick adjustment in labor supply after winning suggests lottery players rapidly change their work habits.

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Restriction βt = β

Ensures the wealth shock response is relatively stable over time, improving the precision of estimates.

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Five-year Estimates

Estimates calculated using data over a five-year period following a lottery win.

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Heterogeneous Effects

Analyzing differences in treatment effects across subgroups to identify variations in impact.

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Extensive-Margin Adjustments

Changes in employment status (participation) due to wealth shocks.

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Intensive-Margin Adjustments

Changes in work hours or wages for those already employed, in response to wealth shocks.

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Winsorizing Income

To mitigate the effects of outliers.

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Time Period: 1991-2010

Focus on labor supply outcomes from 1991 to 2010, based on data availability.

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Population-Wide Registers

Registers containing income information collected by tax authorities.

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1990-1991 Tax Reform

major tax reform that occurred in Sweden, affecting capital and labor income taxes.

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Year-2010 SEK

Swedish currency, adjusted to 2010 value, to account for inflation.

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Study Notes

  • The study examines the impact of wealth on labor supply using data from Swedish lottery players.
  • Lottery winnings modestly reduce earnings.
  • Calibrated dynamic models estimate marginal propensities to earn out of unearned income and labor supply elasticities.
  • Earnings response is more significant for winners than their spouses, which does not align with unitary household labor supply models.

Importance of Understanding Labor Supply

  • Understanding labor supply responses to wealth changes is crucial for evaluating economic policies like retirement systems and property taxes.
  • Accurate estimates of labor supply are valuable for obtaining compensated wage elasticities and informing optimal taxation theory.

Prior Research and Current Study's Approach

  • There is limited consensus on the magnitude of wealth's effect on labor supply.
  • Challenges exist in isolating exogenous variation in unearned income or wealth for credible wealth-effect estimates.
  • This study uses randomized lottery prize assignments to estimate the causal impact of wealth on labor supply.

Advantages of the Study's Lottery Data

  • The study effectively controls for the number of lottery tickets bought.
  • A large prize pool (approximately US$650 million) enables precise estimation of heterogeneous effects across subsamples.
  • Matched to Swedish high-quality administrative data, so labor market outcomes can be studied many years without attrition. External validity concerns about lottery studies are addressed.

Findings on Individual-Level Labor Supply

  • Winning a lottery prize immediately reduces earnings.
  • Effects are roughly constant over time and last more than ten years.
  • Pretax earnings fall by about 1.1% of the prize amount per year.
  • A windfall gain of 1 million SEK (about US$140,000) reduces annual earnings by about 11,000 SEK.
  • 11,000 SEK is about 5.5% of the sample average.
  • Adjustments are primarily made to the number of hours worked.
  • There isn't much evidence of heterogeneous or nonlinear effects.
  • Winners are not more likely to change employers, industries, or occupations.
  • Winning a lottery prize reduces self-employment income, which doesn't line up with previous studies that suggest wealth shocks increase transition into self-employment

Dynamic Labor Supply Model and Elasticities

  • A simple dynamic labor supply model with a binding retirement age is used to estimate lifetime marginal propensities to earn (MPE) out of lottery wealth.
  • Lifetime MPE varies with age, strongest in the youngest winners (-0.15 to -0.17).
  • The average uncompensated labor supply elasticity is close to zero.
  • The individual-level compensated (Hicksian) elasticity is 0.10.
  • The intertemporal (Frisch) elasticity is 0.14.
  • These three estimates are on the lower range of previously reported estimates.

Household-Level Analyses

  • Taking into account the labor supply of nonwinning spouses increases shows there's a reduction in the estimated labor supply response by 23%.
  • The winner reacts more strongly than the spouse.
  • The above is inconsistent with unitary household labor supply models, thus observed labor supply responses should not depend on the identity of the lottery winner.
  • The findings support the winner adjusting labor supply more strongly than spouses.

Lottery Samples

Prize-Linked Savings Accounts (PLS)

  • Sample of Swedish individuals between 1986 and 2003.
  • PLS accounts include a lottery element by randomly awarding prizes to some accounts rather than paying interest.

Kombi Lottery

  • Sample of half a million individuals who participated in a monthly ticket-subscription lottery series.
  • Lottery tickets to proceeds got to Swedish Social Democratic Party for the postwar era. Subscribers choose their desired number of subscription tickets and billed monthly by the organization.

Triss Lotteries

  • Triss is a scratch-ticket lottery run by gaming operator Svenska Spel since 1986
  • Included are Triss-Lumpsum and Triss-Monthly prize winners.
  • Winners of either type of prize are invited to participate in a morning TV show

Sample Construction

  • Merging the three lotteries gives a sample of 435,966 observations, correspoding to 334,532 unique individuals.
  • Observations are primarily from PLS lottery (people win small prizes several times).
  • The authors exclude individuals who died the same year, lack basic socioeconomic characteristics in public records, or have no income, leaving us with a sample of 426,598 observations.
  • Limit to players between 21 and 64 at the time of the win, which reduces the sample to 249,402 observations.
  • They drop cells without variation in the amount won, that gives them an estimation sample of 247,275 observations (200,937 individuals.)

Prize Distribution

  • All lottery prizes are net of taxes and expressed as units of year-2010 SEK.
  • In total more than 5,500 prizes are > 100,000 SEK (US$14,000).
  • Almost 1,500 prizes are > 1 million SEK (US$140,000).
  • The total prize amount in pooled sample = 4.662 million SEK (about US$650 million).
  • PLS and Triss-Monthly each account for 36% of total prize amount, Triss-Lumpsum for 21% and Kombi 7%.

Internal and External Validity

  • "Key to identification strategy is that the variation in amount won within cells is random"
  • Characteristics determined before lottery should not have any prediction power on the amount won conditional on cell fixed effects.
  • The authors reweight representative samples to match the age and sex distribution of the lottery winners.

Estimation Strategy

  • The dependent variable is individual i's year-end outcome of interest measured at time t = 0, 1, ..., 10.

Measures and Labor

  • All analyses are limited to labor supply outcomes from 1991 until 2010.
  • All income variables are winsorized at the 0.5th and 99.5th percentile (2010 SEK currency).

Effect on Annual Earnings

  • Primary earnings measure is pretax labor earnings, from three income sources: annual wage earnings, income from self-employment, and income support due to parental leave or sickness absence.
  • The effect of lottery wealth is near-immediate, modest in size, and quite stable over time.

Margins of Adjustment

  • 1 million SEK windfall decreases participation probability by around 2 percentage points in the five years after

Heterogeneous and Nonlinear Effects

  • The effect is similar across lotteries, but may be different than Triss-Monthly.
  • If winners have a bias to the present/cannot borrow, they would choose lump-sum, so initial results suggest the opposite

Dynamic Labor Supply Model

  • Model is discrete-time and assumes perfect foresight, no uncertainty, and no liquidity constraints for the agent.

Model Simulation

  • Simulate to match after-tax results at the individual-level
  • of life years depends on the age at which the winner is awarded the lottery

Simulation Results

  • The implied average annual hours are close to the average annual hours in the lottery sample (1,656 hours versus 1,633 hours
  • Elasticity is computed for someone who wins at age 50

Wealth

  • Examine what the effect of the lottery is on wealth for spouses to married couples
  • Results indicate at a given the winner they had on hand wealth that can be correlated between both groups
  • Data does provide an estimation of when looking specifically at at TV show about married couples and there are more instances where people buy tickets together

Implied Wealth

  • Model can compute the lifetime MPE

Labor

  • Elasticity is computed for someone who wins at age 50
  • They find there is not a very strong effect with compensation
  • They estimate that the impact of wealth based on the number of weekly hours based on salary - approximately $1 millions SEK and that correlates to 4% of a 7 day work period where as the commission has no real difference in the equation.

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