Data Envelopment Analysis (DEA) based cost norms have attractive properties in the regulation of natural monopolies. However, they are also sensitive to the choice of cost drivers. When some of the cost drivers are discretionary, this may lead to suboptimal incentives. When a regulated firm...

Data Envelopment Analysis (DEA) based cost norms are widely used to regulate natural monopolies like water, electricity, and gas networks. In the typical application, demand is considered fixed and non-controllable (non-discretionary), and the challenge is to incentivize the monopoly to provide...

In many markets there is some form of regulation; and when new policy measures are introduced into a particular sector, the question of how to structure an adequate regulatory process arises. This paper contributes to the literature by describing the approach taken in the nursing home sector in...