This paper analyses the problem about regulation access charges when there is a natural monopoly which has to be used by several companies in order to provide other services. for instance, long distance calls requires to have access to the local telephone network, generally considered as a...

The design of an adequate pension system is a very complex because it must contemplate multiple objectives. Must be inclusive, reduce poverty in old age, providing appropriate incentives in the labor market, increasing the aggregate savings of the economy, the ability to smooth consumption...

A large body of empirical research suggests that welfare spending reduces crime. Contrary to this dominant finding, a few recent studies conclude that there is no relationship between several measures of welfare spending and serious crime. This paper contributes to the debate using data from the...