In this paper we deal with the measurement of technical efficiency (or X-efficiency) of institutions whose operations might be significantly affected by macroeconomic, environmental and non-controllable factors. For this purpose we introduce a four-stage DEA methodology based on the approach...

Many countries have implemented social programmes providing long-term financial or in-kind entitlements. These programmes often focus on specific age-groups and consequently their expenditure streams are subject to demographic change. Given the strains already existing on public budgets,...

This paper discusses two topics which are at the very center of the ongoing political debate on public pension reform. First, we deal with the puzzle that there is a public pension system at all from a purely neoclassical point of view. Second, we address the issue which is considered the...