You can staff your Paris office full of Californians, the labour laws that apply are still the French ones. So I guess that you meant this generous multi billi

You can staff your Paris office full of Californians, the labour laws that apply are still the French ones. So I guess that you meant this generous multi billions $ company has no operations in France? If so, then I don't understand why they wouldn't hire competent French staff if their operations are located in other countries where other local labour laws apply, regardless of your nationality.