What is Aportes?
Aportes (employee contributions) are the amounts deducted from the worker's gross salary for social security: 11% pension, 3% obra social (health coverage) and 3% PAMI (INSSJP, the retirees' health institute), a total of 17%.
They are different from the employer contributions (contribuciones patronales), which the employer pays separately. Aportes appear as deductions on the recibo de sueldo (payslip).
In practice
From a gross salary of $1,500,000, $255,000 is deducted as aportes (17%): pension, obra social and PAMI.