Working papers results

This paper integrates efficiency wage setting in the theory of optimal redistributive income taxation. In doing so, we use a model with two skill-types, where efficiency wage setting characterizes the labor market faced by the low-skilled, whereas the high-skilled face a conventional, competitive labor market. There are two types of jobs in this economy; a low-demanding job which can be carried out by everybody, and a high-demanding job which can only be carried out by the high-skilled, meaning that a potential mimicker may either adopt a conventional income-replication strategy or a job-replication strategy. In this framework, we show that the marginal income tax implemented for the high-skilled is negative under plausible assumptions. The marginal income tax facing the low-skilled can be either positive or negative in general, even if employment-related motives for policy intervention typically contribute to an increase in this marginal tax. An increase in the unemployment benefit contributes to relax the binding self-selection constraint (irrespective of the strategy adopted by a potential mimicker), which makes this instrument particularly useful from the perspective of redistribution.

This paper studies whether firms trade political contributions for public procurement contracts. Combining data on Lithuanian government tenders, corporate donors and firm characteristics, I examine how a ban on corporate contributions affects the awarding of procurement contracts to companies that donated in the past. Consistent with political favoritism, donors’ probability of winning falls by five percentage points as compared to that of non-donor firms after the ban. Evidence on bidding and victory margins suggests that corporate donors may receive auction-relevant information affecting procurement outcomes in their favor. I assess that tax payers save almost one percent of GDP thanks to the reform.