Your admission to the pension funds depends on the duration of your employment and your pensionable annual salary. You will generally be admitted at the start of your employment relationship.
The pension funds insure employees against the financial consequences of age-related retirement, invalidity and death. If insured persons leave the pension fund before one of these events takes place, the fund pays out the vested benefits.
Holders of junior academic positions, student assistants and resident and attending physicians are generally insured with the VSAO pension fund (see PVO-UZH, § 70 para. 2).
VSAO website (in German)
UZH pension plan 101 from the VSAO pension fund (PDF, 165 KB) (external document from VSAO in German)