New Year's Eve is not a separate Swiss public holiday. Whether an employer closes early or grants paid time off depends on the contract, collective agreement or workplace rule.
Schools and childcare follow their own calendar on 31 December.
A private year-end celebration or an early workplace finish does not automatically make the afternoon free.
Geneva is different: Restoration of the Republic is a distinct cantonal holiday on 31 December, not a synonym for the evening celebration.
Check published transport and venue times for the actual evening rather than inferring them from holiday status.
