The french URSSAF, CRPN together with the union SNPL are catching all the companies who've broken the local law. Some more companies are currently in the pipeline and will have to pay really big fines...
PAY ?
Not necessarily as just because France decides it will impose a local law doesn't mean it will apply. EU law may say something completely different and I wait until many other companies are fined. Then lots more Govts will decide that France is not deciding EU policy.