We study the social, demographic and economic origins of social security. The data for the U.S. and for a cross section of countries suggest that urbanization and industrialization are associated with the rise of social insurance. We describe an OLG model in which demographics, technology, and...

This study reviews the African Region of the World Bank's current thinking on cost sharing and the poor as apllied in Sub-Saharan Africa. It inventories country experiences and Bank activities in cost sharing for education and health, reviews African experiences with the implementation of cost...

Albania provides a small amount of social assistance to nearly 20 % of its population through a system that allows a degree of community discretion in determining distribution. This study investigates the poverty targeting of this program. It indicates that relative to other safety net programs...

We study situations of allocating positions to students based on priorities. An example is the assignment of medical students to hospital residencies on the basis of entrance exams. For markets without couples, e.g., for undergraduate student placement, acyclicity is a necessary and sufficient...

We set up a signaling game where individuals differ in ability and wealth. Higher ability means larger benefit supported by the government. Costly signals are used to transmit information regarding own deservingness. However, capital market imperfections may perturb the signals by limiting the...

We study a particular restitution problem where there is an indivisible good (land or property) over which two agents have rights: the dispossessed agent and the owner. A third party, possibly the government, seeks to resolve the situation by assigning rights to one and compensate the other....

We consider the allocation of a finite number of indivisible objects to the same number of agents according to an exogenously given queue. We assume that the agents collaborate in order to achieve an efficient outcome for society. We allow for side-payments and provide a method for obtaining...

I study large random assignment economies with a continuum of agents and a …finite number of object types. I consider the existence of weak priorities discriminating among agents with respect to their rights concerning the …final assignment. The respect for priorities ex ante (ex-ante...

In this paper we present a preliminary estimate of the impact of the recent agreement between the Spanish government and the social partners to reform the public contributive pension system. After updating the projections of pension expenditure constructed in de la Fuente and Doménech (2010)...

In this paper we study the disability transition probabilities (as well as the mortality probabilities) due to concurrent factors to age such as income, gender and education. Although it is well known that aging and socioeconomic status influence the probability of causing functional disorders,...