This paper analyses the optimal worksharing discount granted to mailers and entrants in a liberalized postal sector when there is asymmetric information about the Post Offices costs. When the regulator is unable to ascertain which part of the total cost of sorting has to be attributed to each...

Several European telecommunications regulatory agencies have recently introduced a fixed capacity charge (flat rate) to regulate access to the incumbents network. The purpose of this paper is to show that the optimal capacity charge and the optimal access-minute charge analysed by Armstrong,...

his paper analyzes the effects of the choice between price-based and quantity-based emission regulations on compliance incentives and social welfare in the presence of incomplete enforcement and technology adoption. We show that in contrast to taxes, the extent of violations under tradable...

We compare of the performance of emission taxes between Colombia and Sweden in an experimental setting where subjects are regulated through environmental taxes and had to decide on emission levels, compliance behavior, and adoption of an environmentally friendly technology. Our design allows us...

We examine the optimal regulation of agricultural markets when farmers have organized their activity in a cooperative which is the monopoly supplier of an upstream product and which competes with a single rival firm in selling a homogenous downstream product. The rival's marginal cost is private...

System reliability is a key aspect of electricity supply, and the ability to maintain system reliability thus is an important aspect of a liberalised electricity market. But system reliability can be ensured only if there is sufficient reserve capacity at all times. In a liberalised electricity...

We present a model of optimal contracting between a purchaser and a provider of health services when quality has two dimensions. We assume that one dimension of quality is veri?able (dimension 1) and one dimension is not verifiable (dimension 2). We show that the power of the incentive scheme...

This paper studies measurement of welfare e¤ects, transient and permanent, of stabilizing or deregulating prices in Cobweb-like settings. As in Cobweb-models, producers must commit inputs in face of uncertainty. Here, however, we consider producers who are concerned with adaptations of inputs...

The purpose of this article is to investigate the prospects for entry into an existing network in the telecommunication industry, and how public policy may promote a more competitive outcome. We apply a model that captures the fact that the incumbent has an installed base of loyal consumers,...

What has been the effect of competition from parallel imports on prices of locally-sourced onpatent drugs? Did the 2002 Swedish mandatory substitution reform increase this competition? To answer these questions, we carried out difference-in-differences estimation on monthly data for a panel of...