On the website of the State Secretariat for Migration SEM and on the main visa site of the Swiss Consulate General in Ho Chi Minh City you will find information on the current visa and travel restrictions for Switzerland.
Admission of foreign workers to an employer in Switzerland is subject to authorisations. The employer takes in principle the necessary steps with the competent cantonal authorities in Switzerland to obtain the required authorisations.
The entry visa is granted only when the requested authorisations have been delivered.
The employer in Switzerland who intends to hire foreign workers refers to the information about work permits and the necessary steps to take with the competent cantonal authorities on the webpages of the State Secretariat for Migration (SEM).