“Empirical evidence shows that many markets are characterized by a few large firms that behave strategically, while cohabiting with a competitive fringe of small firms. Thus, there is a need to consider general equilibrium settings that account explicitly for strategic interactions among big...

Institutional and Financial Incentives for Social Insurance provides both an empirical and a theoretical account of the main difficulties presently threatening social insurance systems in most industrialized countries. It analyzes the remedies that have been discussed and sometimes introduced...