Pension systems in Latin America are organized as tripartite contributory schemes paid into by employers, employees and the State. Their coverage has always been segmented and very low because a significant percentage of the labour market is composed of subsistence sectors with low productivity and unstable, uncertain access to commercial and financial networks (associated with a lack of employment protections, low income levels and a high incidence of poverty);. As a result, contributory systems exclude a large proportion of workers and their families from protection against the risks of disability, old age and death, with large differences in coverage between the formal and informal sectors. The main challenge now is to incorporate solidarity financing into pension systems in an efficient way, so that contributory and noncontributory schemes can be combined in accordance with the logic of social security.