Articles of association containing a stepped med-arb clause. Lawsuit for damages filed by the company against a shareholder holding only one share. Impossibility of dismissing the lawsuit on the basis of the med-arb clause where the shareholder had previously filed a labor claim seeking a declaration of nullity of the articles of association in which the clause is contained and the recognition of an employment relationship. Furthermore, given the possibility of self-composition within the judicial proceedings themselves, at a preliminary hearing, dismissal of the damages lawsuit on the grounds of the med-arb clause is "inadvisable":