on Tuesday,  the Federal Court in Lausanne rule in the favour of two companies in Switzerland who paid their employees in euros. Since it was prevailed for in the contract, it represents a violation of the law to claim a right for compensation after having left the company. 

For more informations : 

https://www.swissinfo.ch/eng/workers-paid-in-euros-may-not-claim-for-currency-losses/44682624