Article L1457-1 of the French Labour Code
An industrial tribunal member may be challenged : 1° When he has a personal interest in the dispute, the mere fact of being affiliated to a trade union organisation not constituting such a personal interest; 2° If he is the spouse, partner in a civil solidarity pact, cohabitee, parent or relative up to and including the degree of first cousin of one of the parties; 3° If, in the year…