Hohenheimer Diskussionsbeiträge

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Bargained wages in decentralized wage-setting regimes
(2006) Heinbach, Wolf Dieter
Collective wage agreements still play an important role in the German wage bargaining system. However, there is a critical debate in Germany whether collective agreements deliver the flexibility needed by firms to adjust to the needs of international competition and technological change. In recent years, the social partners in some industries have responded to this possible lack of flexibility by introducing so called opening clauses into their collective bargaining agreements. These allow firms to deviate from their collective agreement under certain conditions. The aim of this paper is to empirically analyze the prevalence of opening clauses in the German manufacturing sector and their impact on the wage structure. To provide a basis for the empirical analyses, a survey on the existence and intensity of opening clauses in central collective agreements has been conducted. Thereby, these sectoral data about opening clauses are exactly combined with those from the German Structure of Earnings Survey 1995 and 2001, a linked employer-employee dataset from German official statistics. The results show the number of collective bargaining agreements containing opening clauses increasing remarkably since 1991. Furthermore, the implementation of opening clauses into collective contracts creates significant effects on wages.
To bind or not to bind collectively? : decomposition of bargained wage differences using counterfactual distributions
(2007) Spindler, Markus; Heinbach, Wolf Dieter
Collective bargaining agreements still play an important role in the German wage setting system. Both existing theoretical and empirical studies find that collective bargaining leads to higher wages compared to individually agreed ones. However, the impact of collective bargaining on the wage level may be very different along the wage distribution. As unions aim at compressing the wage distribution, one might expect that for covered workers? wages in the lower part of the distribution workers? individual characteristics may be less important than the coverage by a collective contract. In contrast, the relative importance of workers? individual characteristics may rise in the upper part of the wage distribution, whereas the overall wage difference might decline. Using the newly available German Structure of Earnings Survey (GSES) 1995 and 2001, a cross-sectional linked employer-employee-dataset from German official statistics, this study analyses the difference between collectively and individually agreed wages using a Machado/Mata (2005) decomposition type technique.
Typisierung der Tarifvertragslandschaft : eine Clusteranalyse der tarifvertraglichen Öffnungsklauseln
(2007) Schröpfer, Stefanie; Heinbach, Wolf Dieter
The introduction of opening clauses in collective wage agreements allowing firms to deviate from their collective bargaining agreements has become widely accepted for the last fifteen years. With respect to the flexibility agreed through collective bargaining, the distinctions between single collective bargaining areas of the same industry have increased. Hence, the economic idea of uniform industry-wide central collective bargaining agreements is no longer tenable. The data set of the IAW used in this article provides differentiated information about opening clauses in collective wage agreements. By means of correspondence and cluster analysis, seven groups of collective bargaining areas are identified, which differ in the type of opening clauses introduced. Over the period from 1991 until 2004, the examination of dynamic aspects of these seven groups exhibits typical paths of development towards an improved flexibility agreed through collective bargaining. Furthermore, the conjunction of the data set with the German Structure of Earnings Survey of the years 1995 and 2001 makes it possible to show the relevance of the different types of single collective bargaining areas for employment and industries of the German manufacturing sector.
What a difference trade makes : export activity and the flexibility of collective bargaining agreements
(2007) Heinbach, Wolf Dieter; Schröpfer, Stefanie
The prevalence of opening clauses in collective bargaining agreements may indicate a tendency to a higher decentralised wage settlement. Increasing competition on international product markets is assumed to be one reason for wage-setting decentralisation, whereas theoretical explanations focus currently on the change of production structure and the impact of exogenous shocks. Incorporating stylised facts about exporting firms, new trade models suggest a different way of adjustment to increasing competition depending on a firm?s nature. While the most productive exporters expand into new markets, small, less productive non-exporters are threatened by import competition. Based on the model from Bernard et al. (2003), we apply the theoretical implications to explain why decentralisation in bargaining may arise. We examine in a second step whether small, less productive, non-exporting firms paying low average wages, possess a higher propensity to use opening clauses than more productive, large exporters with a high wage level. Based on IAB Establishment Data covering the German Manufacturing, our results indicate that firms exporting to EMU countries ? but not exporters in general ? have a lower propensity of using opening clauses than non-exporters. However, inconsistent with theory, slight evidence suggests a rising propensity with increasing firm size and increasing wage level.

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