In Switzerland you would have to prove that you work as a consultant, this means: You could switch to a different company if the gig runs out or you could take

In Switzerland you would have to prove that you work as a consultant, this means: You could switch to a different company if the gig runs out or you could take on a different company as a customer. A way would be to work for two different companies at the same time and subcontract to someone else. Then you would be self-employed and would need to pay the mandatory insurance for age, invalidity, pregnancy, and so on yourself (10.6% of declared revenue), exactly as your employer and you, were you employed in Switzerland. To get started as self-employed is a bit difficult. You need to bootstrap yourself with at least two customers. You need to show offers, orders, payments, advertisement for your service, and so on. They want to make sure that what you do is not circumvention of factually being an employee. A workaround could be to ask two friends if they could create an order for you, then you are free to offer yourself to a company and switch every three to five years.