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Federal Planning Bureau Economic analyses and forecasts Dynamic micro simulation modeling for policy analysis: an overview and some.

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Presentation on theme: "Federal Planning Bureau Economic analyses and forecasts Dynamic micro simulation modeling for policy analysis: an overview and some."— Presentation transcript:

1 Federal Planning Bureau Economic analyses and forecasts http://www.plan.be Dynamic micro simulation modeling for policy analysis: an overview and some applications Gijs Dekkers Federal Planning Bureau and Katholieke Universiteit Leuven Paper presented at the « Tresury Brown Bag Lunch Meeting », Ministero dell'Economia e delle Finanze, Rome, February 14 th, 2011

2 http://www.plan.be Overview of this presentation 1. What is that, microsimulation? A short methodological overview and an even shorter overview of models in Europe 2.A short history of MIDAS_BE 3.MIDAS_BE and its role in the policy making process in Belgium (keeping one eye on Europe). 4.An application: an assessment of recent policy measures on the development of inequality and poverty among the elderly in Belgium.

3 http://www.plan.be Overview of this presentation 1. What is that, microsimulation? A short methodological overview and an even shorter overview of models in Europe 2.A short history of MIDAS_BE 3.MIDAS_BE and its role in the policy making process in Belgium (keeping one eye on Europe). 4.An application: an assessment of recent policy measures on the development of inequality and poverty among the elderly in Belgium.

4 http://www.plan.be 1. What is that, microsimulation? The essential function of (dynamic/static) microsimulation models......is the imputation of (prospective/alternative) microdata Dynamic microsimulation: imputing prospective data n i time

5 http://www.plan.be 1. What is that, microsimulation? The essential function of (dynamic/static) microsimulation models......is the imputation of (prospective/alternative) microdata Static microsimulation: imputing alternative data n i

6 http://www.plan.be A classification of microsimulation models MIDAS

7 http://www.plan.be An overview of dynamic models Table 2: Simulation properties of pension microsimulation models used by European administrations (source PENMICRO; 2009) CountryCross-sectional vs. cohort / longitudinalAgeing processInitial database AVIDGermanylongitudinaldynamic sample of administrative CAPP_DYNItalycross-sectionaldynamicsurvey DESTINIEFrancecross-sectionaldynamicsurvey MICROSNetherlandscross-sectionalstatic and dynamicsurvey MIDASBelgiumcross-sectionaldynamic Survey / Sample of administrative MiMESISSwedencross-sectionaldynamic sample of administrative ??? *Slovenia-Static sample of administrative NYIKAHungarycross-sectionalDynamicAdministrative MIDAS_LU*Luxemburgcross-sectionalDynamicAdministrative PENSIM2United Kingdomcross-sectionalDynamic sample of administrative PRISMEFrancecross-sectionalDynamicadministrative SADNAPNetherlandscross-sectionalDynamicadministrative SESIMSwedencross-sectionalDynamicsample of administrative

8 http://www.plan.be CountryInitial database LAWDenmarkadministrative MIMOSISBelgiumsample of administrative ???U.K.Administrative ? REDISLuxemburgadministrative Table 2: Simulation properties of pension microsimulation models used by European administrations Source: PENMICRO, 2009....but there are plenty of other static models around, including EUROMOD...

9 http://www.plan.be Overview of this presentation 1. What is that, dynamic microsimulation? A short methodological overview and an even shorter overview of models in Europe 2.A short history of MIDAS_BE 3.MIDAS_BE and its role in the policy making process in Belgium (keeping one eye on Europe). 4.An application: an assessment of recent policy measures on the development of inequality and poverty among the elderly in Belgium.

10 http://www.plan.be 2. A short history of MIDAS_BE Birth: May 2005-May 2008: Research project AIM (‘Adequacy of old-age Income Maintenance in the EU’); 6th framework programme of the European Commission. (STREP, identifier FP6-2003-SSP-3, OJ Ref. OJ C234 of 10.10.2003. 2008-2011: a lot has been/is being done... 2011 - ? The future looks promising indeed...

11 http://www.plan.be Some technical characteristics of LIAM/MIDAS Alignment The labour market module The marriage market

12 http://www.plan.be Overview of this presentation 1. What is that, microsimulation? A short methodological overview and an even shorter overview of models in Europe 2.A short history of MIDAS_BE 3.MIDAS_BE and its role in the policy making process in Belgium (keeping one eye on Europe). 4.An application: an assessment of recent policy measures on the development of inequality and poverty among the elderly in Belgium.

13 http://www.plan.be Institutional context 3. Study Committee for Ageing: Annual Report: -Budgetary and social consequences of ageing -Specific studies (ex. 2 nd pension pillar, …) 2. High Council of Finances (Hoge Raad van Financiën, Afdeling « Financieringsbehoeften » : -Annual Report ( the financement of the budgetary costs of ageing), + budgetary targets on the middle-long term (input Silver fund) 1. Government: -‘Silver-paper’ (Zilvernota) -Stability program, of which the ‘long-term part’ Hypotheses Simulation results

14 http://www.plan.be Technical/Institutional context Study Committee for Ageing AWG MALTESE MIDAS Alignment

15 http://www.plan.be Overview of this presentation 1. What is that, microsimulation? A short methodological overview and an even shorter overview of models in Europe 2.A short history of MIDAS_BE 3.MIDAS_BE and its role in the policy making process in Belgium (keeping one eye on Europe). 4.An application: an assessment of recent policy measures on the development of inequality and poverty among the elderly in Belgium.

16 http://www.plan.be 4. An application: the adequacy or “social sustainability” of pensions. 1.What is the impact of current legislation, ageing and economic growth on: 1.Budgetary costs of ageing 2.The adequacy of pensions 3.Between 2006 and 2007, the minimum right per career year as well as the old age guaranteed minimum income have increased by17 and 14% respectively. What is the impact of these policy changes on the sustainability and adequacy of pensions?

17 http://www.plan.be An application: the adequacy or “social sustainability” of pensions (report 2010 of the Study Committee for Ageing). [1] [1] Federaal Planbureau, Algemene Directie voor Statistiek en Economische Informatie, met de medewerking van het Wetenschappelijk Begeleidingscomité, “Bevolkingsvooruitzichten 2007-2060”, Federaal Planbureau, Planning Paper 105, mei 2008. Key demographic hypotheses2007203020502060 Fertility1.811.76 1.77 Life expectancy at birth Men77.381.284.085.3 women83.387.089.790.9 Key macro hypothesesUp to 20112011-2014≥ 2015 Yearly productivity0.01%1.28%1.50% Unemployment rate14.75 in 2014Decreasing towards 8% Social policy hypotheses2009-2010≥ 2015 Wage ceilingCurrent legislation1.25% Minimum right per working year1.25% Welfare adjustment non-lump-sum benefits Employed and self-employed 0.50% Welfare adjustment of lump-sum benefits1.00%

18 http://www.plan.be 4.1. What is the impact of current legislation, ageing and economic growth on: Budgetary costs of ageing Base scenario (1,5% increase of productivity) Variant (1,75% increase of productivity) Retirement benefits 5,34,5 Health care 4,2 Other -1,4-1,7 Total 8,27,0 Figuur 2Meeruitgaven voor pensioenen tussen 2008 en 2060, in % van het bbp Depency ratio Coverage ratio 1/employ ment rate Benefit ratio Base-variant (1.50% prod.gr.)5.31.1-0.8-0.7 Simulation variant (1.75%)4.51.1-0.8-1.4

19 http://www.plan.be 1.The budgetary impact of increasing the minimum right per career year is small because 1.Its impact is not retrospective 2.It pertains only to a limited number of beneficiaries. Hence: +0,01% bbp in 2010, +0,05% bbp in 2030, +0,07% bbp in 2060. 4.2. What is the impact of the two policy measures on the budgetary costs of ageing?

20 http://www.plan.be 4.2. What is the impact of the two policy measures on the budgetary costs of ageing? 2.The budgetary impact of increasing the means-tested minimum pension is more important because 1.Its impact is retrospective 2.It potentially pertains to all beneficiaries. Hence:

21 http://www.plan.be 4.2. What is the impact of the base-variant on the adequacy of pensions? 1.The replacement rate2. Poverty risk3. Inequality (Gini)

22 http://www.plan.be 4.3. What is the impact of increasing the minimum right per career year on the adequacy of pensions? 1. Poverty risk2. Inequality (Gini)

23 http://www.plan.be 4.3. What is the impact of increasing the means- tested minimum pension on the adequacy of pensions? 1. Poverty risk (60% median)1. Poverty risk (70% median) 3. Inequality (Gini)

24 http://www.plan.be 5. Conclusions 1.Dynamic microsimulation is an increasingly popular technique in the assessment the adequacy of social security systems in Europe 2.MIDAS_BE is a dynamic microsimulation model that has proved its worth in Belgian policy support, which is why the FPB continues to invest in its development 3.Also on the European level is there an increasing realization that there is need for models assessing (pension) adequacy. 4.Keep an eye out for LIAM 2!

25 http://www.plan.be Thank you for your attention Grazie per il vostro attenzione Danke für Ihre Aufmerksamkeit Dank voor uw aandacht Merci pour votre attention

26 http://www.plan.be FPB - management and coordination -Demographic module -pension module Belgium DIW -labour market module - pension module Germany ISAE -pension module Italy Geert Bryon Cathal O’Donoghue LIAM-MIDAS MIcrosimulation for the Development of Adequacy and Sustainability Alignment to AWG projections and assumptions: -fertility -mortality -proportional size of working population -inactive states -labour productivity -social policy hypotheses A short history of MIDAS_BE (1/3)

27 http://www.plan.be A short history of MIDAS_BE (2/3) Since AIM, a lot has been done on MIDAS 1.The basis of alignment from AWG to MALTESE 2.All relevant social security measures taken between 2001 and 2010 are now included in the model 3.Extension of alignment procedures 1.Private sector/public sector 2.Civil servants 3.Monetary alignment specified to gender 4.Extension of coverage 1.Unemployment benefit 2.Disability benefit 3.Welfare benefit

28 http://www.plan.be A short history of MIDAS_BE (3/3) 4.Current projects or projects 1.An administrative sample of 300,000 individuals 2.2 nd pension pillar 3.Gross-net trajectory 5.Methodological advances 1.Immigration and emigration of individuals in households 2.Sample weights in dynamic microsimulation with dynamic ageing 3.Option value approach to the retirement decision, taking into account alignment

29 http://www.plan.be...MIDAS’ history looks promising... 6.Progress project MiDaL (Grant VS/2009/0569): LIAM DMS CEPS/INSTEAD (general manager) General Inspectorate for Social Security (financer) FPB (developer) Advisors: Cathal O’Donoghue, Jinjing Li, Howard Redway. One ascii-file instead of ≥ 200 Capacity: no idea... Simulation time: a matter of seconds Open source (hdf-5, Python), which means...

30 http://www.plan.be...sooner or later, you are going to get it for free! show_collar: "showtable(groupby([collar, 10 * workstate + education_level], grpcount() ))" ineducation_process: - show_work: "show(grpsum(workstate < 5))" - show_ineducation: "show(grpsum(workstate == 5))" # decide ineducation upon age and education_level - workstate: "where((workstate!=8) & ((age < 16) | ((age < 19) & (education_level == 3)) | ((age < 24) & (education_level == 4))), 5, workstate)" - show_ineducation: "show(grpsum(workstate == 5))" # unemployed if left education - workstate: "where((workstate==5) & (((age == 16) & (education_level == 2)) | ((age == 19) & (education_level == 3)) | ((age == 24) & (education_level == 4))), 6, workstate)" - show_ineducation: "show(grpsum(workstate == 5))" - show_work: "show(grpsum(workstate < 5))" - show_workstate: "showtable(groupby([(10*workstate)+education_level, lag(workstate)], grpcount()))" table_inwork: - t_inwork : "showtable(groupby([inwork, workstate], grpcount()) )" - all: "showtable(groupby([inwork, workstate, lag(workstate)], grpcount()) )" # - agegroup: "showtable(groupby([agegroup_work, workstate*10+education_level], grpcount()) )" inwork_process: - before_job: "show(grpsum(inwork) )" - before_no_job: "show(grpsum(workstate > 4))"

31 http://www.plan.be Alignment Alignment of state variables: Procedure to have the model respect or ‘mimic’ exogenous aggregates while respecting individual probabilities in the occurrence of the event –Behavioral equation determining the probability of the transition –Individuals are ranked depending on the obtained probability (from the highest to the lowest) –The number of selected individuals reproduces targeted aggregates Monetary alignment or ‘amount alignment’: Proportional adjustment of first-run values of earnings to match exogenous macroeconomic productivity growth rates Uprating Of social security benefits

32 http://www.plan.be Labour market module I

33 http://www.plan.be Labour market module II

34 http://www.plan.be The marriage market I

35 http://www.plan.be The marriage market II 123456… 1 p(1,1)p(1,2)p(1,3) … 2 p(2,1)p(2,2)p(2,3) … 3 p(3,1)p(3,2)p(3,3) … 4………… 5 6 … Females selected for the marriage market age, age difference dummy of working dummies for eduational attainment levels p=partnership(♀x,♂y)=max{p(x,y|x)} of the remaining y

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