The conflict rule included in Article 9 of Regulation No. 864/2007 regulates the collisions of national collective labour laws only in matters relating to the liability of individuals (workers, employers) participating in collective actions, in connection with the initiated or planned industrial action. The provision contains a determinant to indicate the relevant provisions of the collective labour law, which govern the responsibility of the organisation representing the professional interests of the parties to the collective dispute for damage caused by a planned or carried out collective labour dispute. The law applicable to assess the legal implications of the effects of intentional and/or carried out collective action is the collective labour law of the Member State in which the industrial action was initiated or had been announced. It should be noted that Article 9 of this regulation has applied the formula used in Article 4, paragraph 2 of this Regulation, defining the relationship between the general principle of liability for the obligations arising out of non-contractual agreements and the exceptions to the rule under which the applicable law is lex loci damni (Article 4, paragraph 1). In the event of any liability of the participants of a collective dispute, Article 9 of the Regulation No. 864/2007 in fine states as an appropriate collective labour law of the Member State in which the action is to be or has been taken.