All applicable limitation periods including periods of prescription shall be tolled or extended upon the commencement of conciliation proceedings to conciliate a dispute under this chapter, and all limitation periods shall remain tolled and periods of prescription extended as to all parties to the conciliation proceedings until the tenth day following the termination of the proceedings. For purposes of this chapter, conciliation proceedings are deemed to have commenced as soon as a party has requested conciliation of a particular dispute or disputes and the other party or parties agree to participate in the proceedings.