WorldCat Identities

Wunsch, Conny

Overview
Works: 42 works in 156 publications in 2 languages and 404 library holdings
Roles: Author, Editor, Creator, Thesis advisor
Classifications: HC10, 330
Publication Timeline
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Most widely held works by Conny Wunsch
Sensitivity of Matching-Based Program Evaluations to the Availability of Control Variables by Michael Lechner( Book )
15 editions published between 2010 and 2011 in 3 languages and held by 42 WorldCat member libraries worldwide
Based on new, exceptionally informative and large German linked employer-employee administrative data, we investigate the question whether the omission of important control variables in matching estimation leads to biased impact estimates of typical active labour market programs for the unemployed. Such biases would lead to false policy conclusions about the cost-effectiveness of these expensive policies. Using newly developed Empirical Monte Carlo Study methods, we find that besides standard personal characteristics, information on individual health and firm characteristics of the last employer are particularly important for selection correction. Moreover, it is important to account for past performance on the labour market in a very detailed and flexible way. Information on job search behaviour, timing of unemployment and program start, as well as detailed regional characteristics are also relevant. -- training ; job search assistance ; matching estimation ; active labour market policies
Long run effects of public sector sponsored training in West Germany by Michael Lechner( Book )
16 editions published between 2004 and 2005 in English and held by 36 WorldCat member libraries worldwide
Between 1991 and 1997 West Germany spent on average about 3.6 bn Euro per year on public sector sponsored training programmes for the unemployed. We base our empirical analysis on a new administrative data base that plausibly allows for selectivity correction by microeconometric matching methods. We identify the effects of different types of training programmes over a horizon of more than seven years. Using bias corrected weighted multiple neighbours matching we find that all programmes have negative effects in the short run and positive effects over a horizon of about four years. However, for substantive training programmes with duration of about two years gains in employment probabilities of more than 10% points appear to be sustainable, but come at the price of large negative lock-in effects -- ZEW website
Are training programs more effective when unemployment is high? by Michael Lechner( )
10 editions published in 2006 in English and held by 36 WorldCat member libraries worldwide
"We estimate short, medium, and long-run individual labor market effects of training programs for unemployed by following program participation on a monthly basis over a ten-year period. Since analyzing the effectiveness of training over such a long period is impossible with experimental data, we use an administrative database compiled for evaluating German training programs. Based on matching estimation adapted to the various issues that arise in this particular context, we find a clear positive relation between the effectiveness of the programs and the unemployment rate over time"--Forschungsinstitut zur Zukunft der Arbeit web site
Does leaving welfare improve health? Evidence for Germany by Martin Huber( )
8 editions published in 2009 in English and held by 35 WorldCat member libraries worldwide
Using exceptionally rich linked administrative and survey information on German welfare recipients we investigate the health effects of transitions from welfare to employment and of assignments to welfare-to-work programmes. Applying semi-parametric propensity score matching estimators we find that employment substantially increases (mental) health. The positive effects are mainly driven by males and individuals with bad initial health conditions and are largest for males with poor health. In contrast, the effects of welfare-to-work programmes, including subsidized jobs, are ambiguous and statistically insignificant for most outcomes. Robustness checks that include a semi-parametric instrumental variable approach do not provide reasons for concern
Optimal use of labor market policies: the role of job search assistance by Conny Wunsch( )
8 editions published between 2009 and 2010 in English and German and held by 28 WorldCat member libraries worldwide
This paper studies the role of job search assistance programs in optimal welfare-to-work programs. The analysis is based on a framework, that allows for endogenous choice of benefit types and levels, wage taxes or subsidies, and activation measures such as monitoring and job search assistance for each period of unemployment in a dynamic environment with negative duration dependence in the exit rates to employment and potential depreciation in reemployment wages. We show that the main role of job search assistance is to delay or prevent situations in which it is no longer optimal to incentivize the worker to provide positive search effort. It is used to restore or maintain some minimum exit rate to employment which increases with the cost-effectiveness of job search assistance. We also find that in line with existing policies, these programs should mainly be used at the beginning of unemployment and for short durations. However, contrary to existing schemes, they should be exclusively targeted at unemployed workers with low initial exit rates to employment. For all other workers, they should only be used if they fail to find a job within reasonable time despite high expected initial exit rates. -- Job search ; optimal unemployment insurance ; welfare-to-work policies ; recursive contracts
Active labour market policy in East Germany : waiting for the economy to take off by Michael Lechner( )
10 editions published between 2006 and 2007 in English and held by 24 WorldCat member libraries worldwide
We investigate the effects of the most important East German active labour market programmes on the labour market outcomes of their participants. The analysis is based on a large and informative individual database coming from administrative data sources. Using matching methods, we find that over a horizon of 2.5 years after programme start the programmes fail to increase the employment chances of their participants in the regular labour market. However, the programmes may have other effects for their participants that may be considered important in the especially difficult situation experienced in the East German labour market
The curse and blessing of training the unemployed in a changing economy : the case of East Germany after unification by Michael Lechner( Book )
8 editions published in 2005 in English and held by 23 WorldCat member libraries worldwide
"We analyse the effects of government-sponsored training for the unemployed conducted during East German transition. For the microeconometric analysis, we use a new, large and informative administrative database that allows us to use matching methods to reduce potential selection bias, to study different types of programmes, and to observe interesting labour market outcomes over 8 years. We find that, generally, all training programmes under investigation increase long-term employment prospects and earnings. However, as an important exception, the longer training programmes are on average not helpful for their male participants. At least part of the explanation for this negative result is that caseworkers severely misjudged the structure of the future demand for skills"--Forschungsinstitut zur Zukunft der Arbeit web site
Active labour market policy in East Germany: waiting for the economy to take Off ( )
4 editions published in 2006 in English and held by 20 WorldCat member libraries worldwide
We investigate the effects of the most important East German active labour market programmes on the labour market outcomes of their participants. The analysis is based on a large and informative individual database coming from administrative data sources. Using matching methods, we find that over a horizon of 2.5 years after programme start the programmes fail to increase the employment chances of their participants in the regular labour market. However, the programmes may have other effects for their participants that may be considered important in the especially difficult situation experienced in the East German labour market
Evaluating nationwide health intervention when standard before-after doesn't work Malawi's ITN distribution program by Eva Deuchert( Book )
9 editions published in 2010 in English and German and held by 17 WorldCat member libraries worldwide
Nationwide health interventions are difficult to evaluate as contemporaneous control groups do not exist and before-after approaches are usually infeasible. We propose an alternative semi-parametric estimator that is based on the assumption that the intervention has no direct effect on the health outcome but influences the outcome only through its effect on individual behavior. We show that in this case the evaluation problem can be divided into two parts: (i) the effect of the intervention on behavior, for which a conditional before-after assumption is more plausible; and (ii) the effect of the behavior on the health outcome, where we exploit that a contemporaneous control groups exists for behavior. The proposed estimator is used to evaluate one of Malawi's main malaria prevention campaigns, a nationwide insecticide-treated-net (ITN) distribution scheme, in terms of its effect on infant mortality. We exploit that the program affects child mortality only via bed net usage. We find that Malawi's ITN distribution campaign reduced child mortality by 1 percentage point, which corresponds to about 30% of the total reduction in infant mortality over the study period
How to Control for Many Covariates? Reliable Estimators Based on the Propensity Score by Martin Huber( )
3 editions published in 2010 in English and German and held by 17 WorldCat member libraries worldwide
We investigate the finite sample properties of a large number of estimators for the average treatment effect on the treated that are suitable when adjustment for observable covariates is required, like inverse probability weighting, kernel and other variants of matching, as well as different parametric models. The simulation design used is based on real data usually employed for the evaluation of labour market programmes in Germany. We vary several dimensions of the design that are of practical importance, like sample size, the type of the outcome variable, and aspects of the selection process. We find that trimming individual observations with too much weight as well as the choice of tuning parameters is important for all estimators. The key conclusion from our simulations is that a particular radius matching estimator combined with regression performs best overall, in particular when robustness to misspecifications of the propensity score is considered an important property. -- propensity score matching ; kernel matching ; inverse probability weighting ; selection on observables ; empirical Monte Carlo study ; finite sample properties
What did all the money do? On the general ineffectiveness of recent West German labour market programmes ( )
1 edition published in 2007 in English and held by 16 WorldCat member libraries worldwide
The effect of firms' partial retirement policies on the labour market outcomes of their employees by Martin Huber( )
7 editions published in 2013 in English and held by 13 WorldCat member libraries worldwide
In this paper, we assess the impact of firms introducing part-time work schemes for gradual labour market exit of elderly workers on their employees' labour market outcomes. The analysis is based on unique linked employer-employee data that combine high-quality survey and administrative data. Our results suggest that partial or gradual retirement options offered by firms are an important tool to alleviate the negative effects of low labour market attachment of elderly workers in ageing societies. When combined with financial incentives to hire unemployed or young jobseekers as replacement, they seem to be particularly beneficial, especially when labour market conditions are difficult. Under such circumstances, they can even have positive spill-over effects on younger workers. Firms should thus be encouraged to offer such schemes
Do firms benefit from active labour market policies? by Michael Lechner( )
7 editions published in 2013 in English and held by 13 WorldCat member libraries worldwide
This paper investigates the link between variation in the supply of workers who participate in specific types of active labour market policies (ALMPs) and firm performance using a new exceptionally informative German employer-employee data base. For identification we exploit that German local employment agencies (LEAs) have a high degree of autonomy in determining their own mix of ALMPs and that firms' hiring regions overlap only imperfectly with the areas of responsibility of the LEAs. Our results indicate that in general firms do not benefit from ALMPs and in some cases may even be harmed by certain programs, in particular by subsidized employment and longer training programs. These findings complement the negative assessment of the cost-effectiveness of ALMPs from the empirical literature on the effects for participants
What did all the money do? : on the general ineffectiveness of recent West German labour market programmes by Michael Lechner( Book )
3 editions published in 2007 in English and held by 13 WorldCat member libraries worldwide
On the effectiveness and optimal design of labour market policies in Germany by Conny Wunsch( )
5 editions published between 2007 and 2008 in English and held by 7 WorldCat member libraries worldwide
What did all the money do? : On the general ineffectiveness of recent West German labour market programmes by Conny Wunsch( Book )
4 editions published in 2007 in English and held by 7 WorldCat member libraries worldwide
Labour market policy in Germany : institutions, instruments and reforms since unification by Conny Wunsch( Book )
3 editions published in 2005 in English and held by 7 WorldCat member libraries worldwide
Optimal use of labour market policies by Conny Wunsch( Book )
2 editions published in 2007 in English and held by 6 WorldCat member libraries worldwide
Workplace health promotion and labour market performance of employees by Martin Huber( Book )
4 editions published in 2014 in English and held by 5 WorldCat member libraries worldwide
This paper investigates the average effects of (firm-provided) workplace health promotion measures in form of the analysis of sickness absenteeism and health circles/courses on labour market outcomes of the firms' employees. Exploiting linked employer-employee panel data that consist of rich survey-based and administrative information on firms, workers and regions, we apply a flexible propensity score matching approach that controls for selection on observables as well as on time-constant unobserved factors. While the effects of analysing sickness absenteeism appear to be rather limited, our results suggest that health circles/courses increase tenure and decrease the number of job changes across various age groups. A key finding is that health circles/courses strengthen the labour force attachment of elderly employees (51-60), implying potential cost savings for public transfer schemes such as unemployment or early retirement benefits
 
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English (122)
German (6)