We consider social insurance schemes with a two-part benefit formula: a flat (constant) term and a variable term which is proportional to individuals' contributions. The factor of proportionality defines the type of social insurance. We adopt a two-stage political economy approach. At the first,...

This paper presents a simple model of local telecommunications market when two access technologies, landline and wireless, are available. The two technologies differ in their cost structures and in the services they provide to consumers; specifically, the wireless technology allows its...