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Alert

Fraudulent emails

Updated on 17 Apr 2026

Emails are currently circulating which claim to be from the Federal Social Insurance Office, in which the sender asks the recipient to provide their OASI (Swiss social security) number so that the FSIO can proceed with a review of their case file.

Old Age and Survivor’s Insurance (OASI)

OASI is designed to cover basic subsistence needs if a person loses their income from gainful employment owing to old age or death. OASI provides benefits in old age (retirement pension) or pays survivors a widow’s, widower's or orphan's pension. The benefits depend on the amount of the latest income and contribution period. Generally speaking, all people who live or work in Switzerland are subject to compulsory OASI insurance.