This open access book opens up the black box of mediation in collective conflicts through the analyses and comparisons of various systems. Mediation and related third party interventions such as conciliation and facilitation are  discussed as effective prevention and regulation tools for different types of collective labor conflicts. These interventions fit in a new developed five-phase model of collective conflicts in organizations, going from capacity building in latent conflicts, through conciliation, mediation and arbitration in escalating phases, to rebuilding of trust after hot...