Contributions published at Macroeconomics and Labor Markets (Josef Zweimüller)

"We utilize Schmookler’s (1966) concept of demand-induced invention to study the rolenof income inequality in an endogenous growth model. As rich consumers can satisfy morenwants than poor consumers, both prices and market sizes for new products, as well as theirnevolution over time, are determined by the income distribution. We show how a change in the distribution of income affects the incentive to innovate and hence long-run growth. In general, less inequality tends to discourage the incentive to innovate, but this depends on the nature of the redistribution."

This paper studies how changes in the two key parameters of unemployment insurance-the benefit replacement rate (RR) and the potential benefit duration (PBD)-affect the duration of unemployment. To identify such an effect we exploit a policy change introduced in 1989 by the Austrian government, which affected various unemployed workers differently: a first group experienced an increase in RR; a second group experienced an extension of PBD; a third group experienced both a higher RR and a longer PBD; and a fourth group experienced no change in the policy parameters. We find that unemployed workers react to the disincentives by an increase in unemployment duration, and our empirical results are consistent with the predictions of job search theory. We use our parameter estimates to split up the total costs to unemployment insurance funds into costs due to changes in the unemployment insurance system with unchanged behaviour and costs due to behavioural responses of unemployed workers. Our results indicate that costs due to behavioural responses are substantial.

We analyze a macroeconomic model of monopolistic competition in which consumers earn unequal incomes. When preferences are nonhomothetic, the distribution of income affects equilibrium markups and equilibrium product diversity.

This paper discusses long-term trends in the macroeconomic growthnperformance and in income distribution in Europe and the U.S. We reviewninsights from the recent macroeconomic literature on inequality and growthnuse these insights to shed light on the growth and inequality trends.

We analyze a macroeconomic model of monopolistic competition in which consumersnearn unequal incomes. When preferences are non-homothetic, the distribution of incomenaffects equilibrium mark-ups and equilibrium product diversity.

In this paper, we suggest a novel approach to program evaluation that allows identification of the causal effect of a training program on the likelihood of being invited to a job interview under weak assumptions. The idea is to measure the program-effects by pre- and post-treatment data that are very close in time for the same individual. Our approach provides useful information on both, average effects of the program as well as information on the effects of the program for each individual. Evidence on individual treatment effects is helpful as it can be used to improve the targeting of programs.

"The potential duration of benefits is generally viewed as an important determinant of unemployment duration. This paper evaluates a unique policy change that prolonged entitlement to regular unemployment benefits from 30 weeks to a maximum of 209 weeks for elderly individuals in certain regions of Austria. In the evaluation, we explicitly account for the fact that the program was an endogenous policy response to a crisis affecting individuals with severe labor market problems. The main results are: (i) REBP reduced the transition rate to jobs by 17 ; (ii) accounting for endogenous policy adoption is important and quantitatively significant."

This paper investigates the effectiveness of benefit sanctions in reducing unemployment duration. Data from the Swiss labor market allow making a distinction between the effect of a warning that a person is not complying with eligibility requirements and the effect of the actual enforcement of a benefit sanction. We find that both warning and enforcement have a positive effect on the exit rate out of unemployment. Moreover, the stricter the sanction policy the shorter is the duration of unemployment of the non-sanctioned. This can be taken as evidence of a strong ex-ante effect of a strict sanction policy.

"We present a model in which two of the most important features of the long-run growth process are reconciled: the massive changes in the structure of production and employment; and the Kaldor facts of economic growth. We assume that households expand their consumption along a hierarchy of needs and firms introduce continuously new products. In equilibrium industries with an expanding and those with a declining employment share co-exist, and each such industry goes (or has already gone) through a cycle of take-off, maturity, and stagnation. Nonetheless macroeconomic aggregates grow pari passu at a constant rate."

In 1997, the Swiss government introduced active labor market programs on a large scale to improve the job chances of unemployed workers. This paper evaluates the effect of these programs on the duration of unemployment. Our evaluation methodology allows for selectivity affecting the inflow into programs. We find that in most cases the programs do not reduce the duration of unemployment. The exception is the program of temporary wage subsidies which reduces unemployment, but only for foreign workers. From a cost-benefit point of view, temporary wage subsidies seem to be the only program worthwhile pursuing.

This paper analyzes the impact of the Austrian Regional Extended Benefit Program (REBP) on the labor market outcomes for elderly workers in Austria. The REBP extended entitlement to regular unemployment benefits from 30 weeks to a maximum of 209 weeks for elderly individuals in certain regions. This policy change created a large-scale quasi-experimental situation from which a lot can be learned about the impact of unemployment insurance rules on the dynamics of employment, unemployment, and wages. We find that the REBP led to a tremendous increase in unemployment which was due to both an increase in the inflow to and thenoutflow from unemployment. The REBP also induced a strong increase in early retirement and in many cases, in particular for steel workers, entering unemployment meant withdrawal from the labor force. Finally, we show that there were also non-negligible eects of extended benefits on the level and the distribution of wages.

This paper analyzes the impact of formal training on worker mobility. Using data from the Swiss Labor Force Survey, we find that on-the-job search activities and, to a smaller extent, actual job separations are significantly affected by both employer-provided and general training. Moreover, while the separation probability of searching workers is strongly affected by previous firm-provided training, no such effect shows up for non-searchers. This is consistent with the hypothesis that workers bear most of the cost of specific training.

This paper provides a critical review of the recent literature on inequality and growth. After discussing historical and more recent distributional trends as well as empirical evidence on the relationship between inequality and growth, I focus on recent explanations of the inequality-growth puzzle. I consider both the impact of the functional and the personal distribution on long-run growth rates. A final section discusses a rather neglected issue in the recent literature: the impact of expected demand for innovation decisions.

We present a model in which workers must be educated to get a good job and firms must innovate in order to increase productivity. Education as well as innovation and production require skilled labor as inputs. This, together with the fact that learning opportunities differ across workers, determine simultaneously the long-run level of skilled employment and the long-run rate of growth. We study the impact of changes in the factors which affect the education of workers and the incentives to innovate, and discuss the growth and employment effects of labor market policy measures.

This paper studies the effect of increased immigration in Austria on the unemployment risk of young natives. Austria experienced a dramatic rise in the share of alien workers as a result of the breakdown of the former commu-nist regimes (especially from former Yugoslavia). We concentrate on unemployment entry of young male workers, who are supposed to compete most heavily with new immigrants. Our results indicate that the detrimental impact - if it exists at all - is only minor. This is irrespective of the analyzed proxy for competition: The share of foreign workers in an industry or in a region.

This paper analyzes the impact of inequality on growth when technical progress is driven by innovations and consumers have hierarchic preferences. Inequality has an impact on growth because it affects the structure and the dynamics of demand. Redistribution from very rich to very poor consumers is beneficial for growth. In general, the growth effect depends on the nature of redistribution. Due to a demand externality of R&D activities multiple equilibria are possible.

Personnel economics has put forward conflicting arguments concerning the impact of increased wage dispersion within a firm on the productivity of its workers. Besides giving more incentives, bigger wage differentials might also give rise to less co-operation and more politicking amongst workers resulting in worse outcomes. We try to shed light on these issues using panel data for Austrian firms. As indicators for firm performance we use standardised wages. For white-collar wages the following picture emerges: more dispersion leads to higher earnings up to some point where the relation changes its direction. For blue-collar wages we find a positive association between dispersion and standardised wages between firms, but no relation within firms over time.

Using information on job changes and search behavior of workers and controlling for endogenousnmobility we study firm-size wage differentials in Switzerland. We find that the observed crosssectionalnfirm size premium cannot be explained exclusively by worker heterogeneity. Almost 50n% of the cross-section differential is a firm-size effect.

The paper presents an empirical analysis of a model of endogenous growth and innovation with unequal incomes and hierarchical consumer demand. The theoretical model predicts a positive impact of income inequality on product diversity. The impact of inequality on per-capita growth may be positive or negative depending upon the assumptions about productivity growth, where the standard assumption that productivity is positively related to product diversity implies a positive impact. In the empirical part, indices for absolute and relative product diversity are calculated from ICP-expenditure data. The empirical evidence shows that a significant positive relationship exists between income inequality and relative product diversity and that the relationship between income inequality and economic growth is negative and significant. The results lead to the conclusion that the diversity-productivity relationship used in new growth theory has to be treated with scepticism.

The retirement decisions of spouses may be interdependent for various reasons: similarity of tastes, joint assets, sharing rules for income and housework, or complementarity of leisure. Because of data limitations, only a few empirical studies exist on this topic. From a policy point of view interdependent retirement could become important if legislators in different EC countries are forced to synchronize minimum retirement ages, which are lower now for females than males in a number of countries. In the theoretical part, the reaction of spouses to changes in the retirement age of their partners is analysed for typical family patterns. In the empirical part, the possibility of interdependent retirement is studied for Austrian data. The findings show an asymmetry: husbands react to changes in wives' legal minimum retirement age, wives don't react vice versa. The cross effect on men's participation rates -- resulting from a rise in women's minimum retirement age --is almost half as big as the first-round effect upon the women themselves.