Disputes are inherent in social relations, so the role of the legislator is to introduce rules under which they can be resolved. The methods that make it possible to resolve them include ADR methods. Mediation as an alternative form of dispute resolution has been known since antiquity, nowadays its precursor is the United States of America, where at the turn of the 1970s and 1980s alternative methods of conflict resolution were developed. Mediation, next to bargaining and social arbitration, is one of the peaceful methods of solving collective labour disputes. It should be stressed that as a peaceful method of resolving collective disputes, it can be treated as one of the instruments of social dialogue. Dialogue is an inmamental feature of dispute resolution regardless of its typology, and in the case of collective disputes it can be a guarantor of the preservation of social peace. Hence, it is very important to create a legal framework and introduce instruments to increase its effectiveness.