The mandatory 1st pillar is covered by the Old Age and Survivors Insurance and the Disability Insurance, or OASI and DI. The benefits are paid as pensions, covering the basic subsistence needs.
The mandatory 2nd pillar is formed by the pension fund. The basis for this is the Federal Act on Occupational Old Age, Survivors’ and Disability Pension Provision and Compulsory Accident Insurance, OASI/II and CAI, (BVG and UVG). The contributions from the pension fund are intended to maintain the standard of living.
In the case of voluntary private pension plans, a distinction is made between the restricted pillar 3a and the unrestricted pillar 3b. They fill any existing pension gaps and cover additional, individual requirements.