ROI Land Investments Ltd. v FD
Where the conditions for Article 21(2) are satisfied, the reservation in Article 6(1) concerning the application of Article 21(2) prevents a Member State court from applying its national jurisdiction rules, even if those rules are more favourable to the employee. Where the conditions for Article 21(2) or any other provision listed in Article 6(1) are not satisfied, Article 6(1) allows the court to apply those national rules to determine jurisdiction.