Switzerland will gradually relieve the border restrictions from June 15. The EU/EFTA members and UK citizens can start to enter Switzerland. However, countries outside of the Schengen area, including Japan, will continue to be restricted.

Who is allowed to enter Switzerland?
The people who have met one of the following requirements:
– Swiss citizen
– People who have a valid travel document
– People who have an EU/EFTA citizen and have official documentation to confirm that you have a work-related reason for entering Switzerland
– You are transporting goods for commercial purposes and have a delivery order for your merchandise.
– etc. (check detail: https://bre.is/WXxxySZy)

On 15 June, it is planned to lift all travel restrictions and restore full free movement of persons with Germany, Austria and France. Switzerland is also planning to lift all current entry restrictions involving EU/EFTA states on 15 June. This will allow people to travel and reintroduce freedom of movement between all states within the Schengen area without restriction. Restrictions will also be lifted for citizens with rights of free movement from non-Schengen states, such as the United Kingdom, Ireland, Romania, Bulgaria, Croatia and Cyprus.

The Federal Council aims to lift all travel restrictions and restore full free movement of persons to and from all Schengen states by 6 July.

Please check more detail information from Tokyo Swiss Embassy: https://www.eda.admin.ch/countries/japan/ja/home/representations/embassy.html

Resource: 新型コロナ規制 日本人はスイスに入国できる？