On Social Transfers and Income Taxation

In this paper we provide a different rationale for the use of social transfers. It is assumed that the government is unable to condition the (possibly nonlinear) income tax scheme on the productivity and the endowment of the citizens. However, people applying for social benefit have to demonstrate their financial assets, which is costly for the government to verify. We show that under weak conditions the government will prefer to provide social transfers that induce some voluntary unemployment to reduce the informational rent the highly productive and/or rich types obtain.     

Price-cap Regulation of Airports: Single-till Versus Dual-till

Abstact This paper takes up the debate whether price-cap regulation of airports should take the form of single-till or dual-till regulation. The contribution is to model single- and dual-till regulation, evaluate their welfare implications, and compare them to Ramsey charges. We show that single-till regulation dominates dual-till regulation at non-congested airports with regard to welfare maximization. However, none of them provides an airport with incentives to implement Ramsey charges. A Ramsey optimal price-cap regulation, which achieves this goal, is also presented. Thanks to Kay Mitusch, Pio Baake, and Sascha Lukac for very helpful comments.     

The Reliability of Certification: Quality Labels as a Consumer Policy Tool

Given the large number of certification systems in the food industry, it is surprising that there are only a few research approaches to the economics of certification. Certification schemes are used to ensure marketing claims for unobservable quality attributes. Under asymmetric information, process-oriented quality characteristics such as organic farming, animal welfare, or fair trade raise the question of mislabelling. In the long run, only a reliable control procedure can reduce the risk of food scandals. The article presents a model which includes several starting points to enhance the efficiency of certification systems and the corresponding labels. On the whole, tendencies towards price wars on the certification market and considerable differences in performance reveal the necessity of institutional changes. Strategies for reducing auditors dependence, intensifying liability, increasing reputation effects, and minimizing audit costs are suggested. Finally, policy implications for public and private monitoring are discussed.     

Bedarfsgerechte Steuerung der Gesundheitsversorgung — Chancen und Hindernisse

On 2 July 2018, the German Council of Health Experts handed over its current report entitled, “Demand-oriented health care management” to the Federal Ministry of Health. The pronounced separation of outpatient and inpatient care, and distinction between private and public health insurance, is typical of the German system. Experts’ recommendations include improved coordination of outpatient and inpatient services, monistic hospital financing and family doctor-centred patient care. The main criticism of the report is that it lacks a regulatory concept with competitive management structures.     

The Determinants of China's Minimum Wage Rates

We use a highly disaggregated panel of macro data and minimum wages at the county level to investigate the processes behind minimum wage adjustments in China. Relying on random effects models, spatial econometrics techniques, and multilevel analyses, we document that a comparatively small number of economic variables – including the local price level and GDP per capita – are important determinants of minimum wage rates. Interactions between adjacent counties and counties of the same administrative type, and centralized mechanisms, particularly at the provincial level, also play an important role in explaining the variance in minimum wage rates across counties. Finally, we show that China's provinces are the key players for setting minimum wage rates and that, when they do so, they are not uniform in the way they weigh different economic variables.