The looser overall firing rules are, the harder it is for the union to protect members from e.g. firing for insisting on adherence to safety/security/contractua

The looser overall firing rules are, the harder it is for the union to protect members from e.g. firing for insisting on adherence to safety/security/contractual/employment policies/laws. Threat-of-firing-backed pressure on all those fronts is incredibly common outside companies with strong unions.