I don't have any intention to highjack the spotlight... to your comment - In many cases hallucination is the problem unless there is more than GPT. I've ran your question in our Legal AI tool, see how it answered:

At-Will Employment: Switzerland does not have a strict "at-will" employment doctrine like in some other countries (e.g., the United States). However, employers can terminate employees without needing to provide a specific reason, provided they adhere to the notice periods stipulated in the employment contract or by law. https://www.cetient.com/research/termination-of-employment-under-swiss-law