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1. Welfare Magnet Hypothesis, Fiscal Burden and Immigration Skill Selectivity

   Assaf Razin (Cornell University, Tel Aviv University, CEPR & NBER) and Jackline Wahba (University of Southampton (UK)) October 2011
2. Introduction Public debate on immigration has increasingly focused on the welfare state amid concerns that immigrants are a fiscal burden. There has also been a sizeable literature on how welfare-state generosity works as a magnet to migrants. What about the evidence?
3. Table 1: Immigration and Aggregate Social Spending
4. Introduction This suggests that countries that have generous welfare systems also have relatively more unskilled immigrants, i.e. welfare state generosity acts as a magnet for unskilled migrants. However, the skill composition of immigrants depends on many factors and in particular on the policy regime, namely whether migration is free or restricted. In other words, the generosity of the welfare state may affect the skill composition of immigrants differently, depending on the immigration policy adopted.
5. This paper Tests to what extent does the effect of welfare state generosity on immigration and its composition depend on the migration policy regime, namely whether immigration is free or restricted. controls for the potential endogeneity problem : the skill composition of migration and the generosity of the welfare state Features: control for others factors - returns to skills in host and home countries Study immigration from LDCs as well as DCs Standardise cross-country education quality differences by using the Hanushek-Woessmann (2009) cognitive skills measure.
6. Theoretical Underpinning: Free RegimeSocial Magnet Hypothesis A typical welfare state with relatively abundant capital and high total factor productivity (implying relatively high wages for all skill levels) attracts both unskilled and skilled migrants. On the other hand, the generosity of the welfare state attracts unskilled (poor) migrants, as they expect to gain more from the benefits of the welfare state than what they expect to pay in taxes for these benefits: that is, they are net beneficiaries of the generous welfare state. In contrast, potential skilled (rich) migrants are deterred by the generosity of the welfare state. Thus the generosity of the welfare state shifts the migrant skill composition towards the unskilled.
7. Theoretical Underpinning: Restricted RegimeFiscal Burden Hypothesis In the restricted-migration regime, voters are motivated by two considerations: how migration affects their wages, and how it bears on the finances of the welfare state. Typically, unskilled migration depresses the unskilled wage and boosts the skilled wage. The opposite occurs with skilled migration. The effect of migration on the finances of the welfare state is common to all voters of all skills, because skilled migrants are net contributors to the welfare state, whereas unskilled migrants are net beneficiaries. From a public finance point of view, native- born voters of all skills would therefore opt for the skilled to come and for the unskilled to stay away to mitigate the fiscal burden
8. Previous Literature : US Welfare migration empirical literature is inconclusive. Normally, evidence suggests that welfare serves as a magnet for immigrants: Southwick (1981); Gramlich and Laren (1984); Blank (1988); Borjas (1999); Gelbach (2000); McKinnish (2005, 2007) e.g.Borjas (1999) finds that low-skilled migrants are much more heavily clustered in high-benefit states. On the other hand, some find that welfare benefits has no significant effect over migration: –Levine & Zimmerman (1999): welfare benefit have little effect on relocation. Walker (1994): no evidence in support of the magnet hypothesis. These studies however, do not address international immigration, only migration within the U.S.
9. Previous Literature: OECD/Int’l Peridy (2006) and Warin and Svaton (2008) find that aggregate welfare-state benefits have a positive effect on migration. They do not, however, separate between high-skilled and low-skilled immigrants. De Giorgi and Pellizzari (2006) find positive effect across different levels of education among the immigrants. Docquier, Lohest and Marfouk (2006) find that while all educational groups are indeed attracted to welfare-benefits, the unskilled are motivated by social expenditure much more than the skilled. All these studies, however, do not differentiate between free and policy-controlled migration!
10. Previous Literature None of those study take into account the immigration regime: Studies of migration between states within the US, can help only in providing evidence of a free-migration regime. Studies that are confined to the policy-controlled migration regime, but employ a model of the migrants’ choice whether to migrate and to which country, are evidently problematic. Studies that refer to both migration regimes without controlling for them are problematic: they do not disentangle migration policies in the host countries, and the individual migrant’s migration choices in the source countries.
11. Data Utilise free-movement within the EU to examine the free migration regime and compare that to immigration into the EU from two other groups, developed and developing source countries, to capture immigration-restricted regimes. Bilateral data from the year 2000 on 16 EUR countries (14 out of the EU-15 + Norway & Switzerland), 10 non-EU OECD countries, and 23 developing countries. (Docquier & Marfouk (2006)). Three groups: Group A contains only the source-host pairs of EUR which allow free mobility of labour between them. Group B includes the developed source- EUR host pairs of countries. Group C developing source- EUR host pairs. EUR is always the host.
12. Quality of Education and Enforcement of Immigration Policies Immigrants with the same years of schooling may be treated equally in a points system, although they may vary in their labour market productivity If immigration policies favour higher educated immigrants, this would overestimate the effect of skill composition for LDCs. But if high educated immigrants are of poor quality then their productivity/behaviour would not be that different from the low-skilled ones, resulting in an underestimate of the effect of welfare generosity on the skill composition. Thus not controlling for educational quality is problematic since we cannot know a priori which way that would bias our results.
13. Data on Educational Quality Hanushekand Woessmann (2009) use international assessments of student achievement such as the First International Mathematics Study (FIMS), the Trends in International Mathematics and Science Study (TIMSS) and the Programme for International Student Assessment (PISA). A total of 12 international student achievement tests (ISATs) were collected. In order to compare performance on the ISATs across tests and over time, they project the performance of different countries on different tests onto a common metric. We use Hanushek-Woessmann (2009) imputed average test scores in maths and science for primary through end of secondary school (scaled to PISA scale divided by 100). We adjust all the migration stocks for quality of education using Hanushek and Woessmann (2009) new measures of international differences of cognitive skills.
14. Tabl e 2: Test Scores
15. Table 4: Controlling for education quality where REQ = M(EQs/EQh) WEQ =M (1/EQs))
16. Hypothesis The effect of welfare-state policy on immigrants, is different across skill levels; thus the skill composition of immigrants is adversely affected by the welfare generosity of host countries. If immigration is controlled and screened by policy of the host country, the opposite may occur, given the considerations of voters in the host country.
17. Table 3 Non-parametric Evidence
18. Econometric model As mentioned above the generosity of the welfare state determines the self-selection of potential migrants (supply-side mechanism) and the immigration policy in the destination country (demand-side mechanism). We take advantage of heterogeneous bilateral immigration regimes to identify and quantify these two mechanisms.
19. Econometric model We specify migration selectivity rates, following Grogger and Hanson (2011). denotes the stock of migrants of skill level i (comprised of e skilled and u unskilled), who originated from source country s and reside in host country h, as a ratio of the stock of all native workers of skill level i in the source country s in the year 2000. Since our key hypothesis is that the effect of welfare benefits on the skill selectivity of immigrants vary according to the immigration regime, we use the skill difference in the migration rate.
20. Econometric Specification 1 The dependent variable, DMs;h,tmeasures the skill difference in migration rate in t . DMs;h,t-1 measures lagged dependent variable (indirect way of capturing Flows). Bh denotes the log average benefits per capita in host country h over the period 1974-1990 Rs;h is a policy regime dummy variable, which equals 0 if the source-host pair exercises free migration, and 1 otherwise. In our sample, only migration between EUR countries is free (Rs;h=0). Immigration to EUR from non-EUR DCs or LDCs is restricted (Rs;h=1).
21. Econometric Specification 1 Hypotheses: the effect of welfare state generosity on the skill difference selectivity of the migrants under free migration is negative the effect of welfare state generosity on the skill difference selectivity of the migrants under restricted migration is positive
22. Specification 2 Direct way of capturing Flows; as the change between 1990 and 2000 :
23. Econometric Specification: Controls Policy variables: Refugees as a share in total immigrants in 1990 in h; to capture the effect of family re-unification schemes adopted in host countries we use the stock of past migrants from s in h in 1990. Returns to Skills differentials : (i) Inequality measures (Ginicoefficient) in s in 1990 (ii) as a proxy for the returns to skill in the host country, the log value of the skilled-unskilled native labor stock ratio in 1990 (iii) instead of (ii), for the host country,skilled-unskilled wage differential measured by the labor compensation per employee in US dollars PPP in 1995 (iv) the difference in unemployment rates between the skilled and unskilled in the host country in 1998 Others: Real GDP per capita in s & h in 1990; unemployment rate in 1990 in s & h; average years of schooling in s, distance; same language; strong links.
24. Endogeneity of Welfare To address potential endogeneity problem between the level of benefits Bh in the host country and the skill selectivity/composition of the migrants : We instrument the lagged level of benefits per capita (1974-90) in the host country using the legal origin (LO) in the host country (English, Scandinavian, or French-German) as instrument. Legal system indicates cultural features of the countries and reflects basic constitutional notion regarding the attitude towards property rights on the one hand, and social rights on the other hand.(Bh & LO cor= 60%). A concern is if LO is correlated with, for example, economic development/growth which is known to affect migration. The empirical literature is mixed with respect to whether legal origin impacts economic growth. E.g. Acemoglu and Johnson (2005) questions the impact of legal system on economic growth. However to ensure that this is not a possible channel, we include GDP growth rate in the host country as a control.
25. Table 5: OLS Estimates, Migration Rates with lagged dependent variableDependent Variable: Skill Difference in Migration Rates in 2000 Robust standard errors in parentheses. Clustered by pairs.
26. Table 6: OLS Estimates of Migration Rates with lagged dependent variable; Adjusted by Relative Educational QualityDep. Variable: Skill Difference in Migration (REQ) Rates in 2000
27. Table 7: IV Estimates: Migration Rates with lagged dependent variableDependent Variable: Skill Difference in Migration Rate in 2000
28. Table 8: IV Estimates Migration Rates with lagged dependent variable Adjusted by Relative Educational Quality
29. Table 9: IV Estimates: Second Specification
30. Robustness Checks Use different methods to adjust for the quality of education Scale (weight DM=WEQ; weight High only=HEQ); interact (IEQ) Use benefits as % GDP in 1980-90 (host, logs) Use fixed effects for source country All results are robust.
31. Table 9: IV Estimates
32. Summary of Results The effect of the generosity tends to be larger for DCs relative to LDCs: a 1% increase in welfare-state benefit spending would increase the skill difference migration rate of LDCs migrants by around 2.0% and of DCs migrants by around 3.5%. Controlling for quality of education strengthens the positive effect of the skill composition of LDCs and hardly changes the estimate for DCs, thus narrowing the gap between the effects for LDCs vs. DCs. Thus a 1% increase in welfare-state benefit spending would increase the skill composition of LDCs migrants by around 2.5% and of DCs migrants by around 3.4%.
33. Conclusion Findings: Find evidence of the magnet hypothesis: that the generosity of the welfare state adversely affects the skill-composition of migrants under free-migration; And of the fiscal burden hypothesis : positive effect under a policy-controlled migration regime even after controlling for the differential returns in skills in source and host countries. The effect tends to be larger for DCs. But once we adjust for educational quality, the effect for LDCs converges to that from DCs. Policy Implications: Immigration policies favouring high-skilled migrants need to take into account educational quality Under free-migration, the generosity of the welfare state acts as a magnet for the unskilled harmonizing the minimum welfare provision within the EU ?