I have a legal question here I see the core issue is the boilerplate clause on joint employment For lawyers: who has jurisdiction to determine that joint empl

I have a legal question here I see the core issue is the boilerplate clause on joint employment For lawyers: who has jurisdiction to determine that joint employment has happened? Can the NLRB really weight in? Shouldn't that be determined by a state employment agency? And what if both parties agree there is no joint employment?