ZEW Discussion Papers

I study the causal effect of the European Union Emissions Trading System (EU ETS) on the productivity of German manufacturing firms. Using administrative firm-level data, I estimate robust production functions…

We analyze the best price clauses (BPCs) of online travel agents (OTAs) using meta-search price data of more than 45,000 hotels in different countries. Although OTAs apparently have not changed their standard…

Using panel data on the full population of corporate tax returns of Armenian firms, we study the behavioral response of firms to three size-dependent regulations. We find: i) a strong response to an accounting…

We evaluate the impact of a major European state aid program for broadband deployment applied to rural areas in the German State of Bavaria in the years 2010 and 2011. Using difference-in-differences estimation…

We provide a comprehensive quantitative assessment of cartels and the related cartel enforcement process in the European Union (EU) from 2001 to 2015. In a first step, we present a detailed characterization of…

Environmental policies may have important consequences for firms’ competitiveness or profitability. However, the empirical literature shows that hardly any statistically significant effects on firms can be…

This paper tests a number of hypotheses on the use and effectiveness of patents and trade secrets designed to protect innovation. While previous studies have often considered patents and trade secrets as…

Decisions taken at the start of one’s career have long-term consequences and one important decision graduates have to make is whether to be regionally mobile when looking for the first job. We investigate…

How can retirement savings be increased? We explore a unique policy change in the context of the German pension system to study this question. As of 2004, the German pension authority started to send out annual…