This study tests for financial constraints on R&D investment and how they differ from capital investment. To identify constraints in the access to external capital, we employ a credit rating index. Our models show that internal constraints, measured by mark-ups, are more decisive for R&D than...

In der folgenden Studie möchten wir ausgewählte Aspekte von intra- und intergenerationalen Umverteilungseffekten im System der bundesdeutschen Alterssicherung auf der Basis der Humankapitalheorie mit Simulationsmethoden analysieren. Falls es das Ziel der Politik ist, die Ungleichheit des...

Collective bargaining in Germany takes place either at the industry level or at the firm level; collective bargaining coverage is much higher than union density; and not all employees in a covered firm are necessarily covered. This institutional setup suggests to explicitly distinguish union...

This paper investigates how competition and firm size affect the relationship between market uncertainty and R&D investment. We use an intuitively appealing measure of firm-specific uncertainty along with panel data to show that firms invest less in current R&D as uncertainty about market...

This paper investigates the development of basic cognitive, motor and noncognitive abilities from infancy to adolescence. We analyse the predictive power of these abilities, initial risk conditions and home resources for children's achievement. Our data are taken from the Mannheim Study of...

With the purpose to reduce winter unemployment and to promote all-season employment in the constructions sector, Germany maintains an extensive bad weather allowance system. Since the mid 1990s, these regulations have been subject to several reforms that resemble the range of approaches for...