Santiago Levy, former director of IMSS, argues that the core problem with Mexico's pension system isn't its structure, but rather the high rate of informal employment. He warns that no pension scheme will be effective if workers spend half their careers outside the formal economy.

Santiago Levy, exdirector del IMSS, advirtió que ningún sistema de pensiones, ya sea de reparto o de cuentas individuales, funcionará mientras los trabajadores pasen la mitad de su vida laboral en la informalidad