EN
The study was prompted because the time left before private pension-fund services have to begin is becoming shorter, but the legislation to regulate precisely the private pensionfund pillar of the social security system is still lacking. The author begins with the need to change existing legislation, as the framework it provides cannot be utilized in an acceptable way. The second part presents mathematical programming models that will or could help to devise feasible, acceptable legislation that defines the service to be provided by private pension funds.