Art. 91 FNIA from 2022

Art. 91 Duty of care of employers and of recipients of services
1 Before a foreign national begins employment, an employer must inspect their identity card or check with the competent authorities to ascertain that the said foreign national is entitled to work in Switzerland.
2 Any person who obtains a cross-border service must inspect the identity card of the person providing the service or check with the competent authorities to ascertain that this person is entitled to work in Switzerland.
Es besteht kein Anspruch auf Aktualität und Vollständigkeit/Richtigkeit.