Ah, but consider if you're a multinational corporation, and your employee asks for permission to work remotely from Japan for 90 days.
Will your policies allow you to give permission for something illegal?
Will your policies allow you to give permission for something illegal?
Why would the liability be solely with the person? Especially if that company has a representation in the other country I highly doubt this.
In e.g. NL the company has to "take care" of the employee. A company cannot just ignore such a question, or take it as "not my problem".