The recent economic crisis and sovereign debt crisis in Europe, along with the increase of the aging population, it has highlighted the risks of sustainability of public system social security and of the welfare state, both short and long term.The different states of the European Union have addressed the issue of sustainability in different ways, but in the future, the public pension deficit will extend to other countries, mostly due to the tensions caused by the aging population.It is important to analyze the various measures being taken in Europe to learn from the successful measuresand prevent recurrence of the measures which have been shown ineffectiveor have caused greater damage that your benefits, among whose measures, the increase i...