From August 2018 to the end of the year, 10 existing sectoral national collective agreements were made mandatory for all employers. According to the Ministry of Labour, these agreements cover about 191,000 employees. Restrictions on the obligation of peace may result from previous collective agreements or arbitral awards that are also protected by the Constitution. An obligation of peace must not be agreed solely by a collective agreement, but can also be agreed by a simple agreement between a trade union and an employer. The mediators` proposals are not binding; But these are the decisions of the arbitrators. Under Law 1876/1990, trade unions traditionally resort unilaterally to mediation and arbitration to obtain an arbitration award (legally assimilated to a collective agreement). The main levels of collective bargaining in Greece were: national level covering the whole economy; the industrial/professional level that covers certain industrial sectors or occupations; and at the enterprise level. Until 2010, the framework for negotiations was established by a law adopted in 1990, which established free collective bargaining, in which mediation, mediation and arbitration played an important role through the official mediation and arbitration organization, OMED.   The evolution of the structure of collective bargaining in Europe: Greece, Matina Yannakourou, 2005 Low confidence is one of the main characteristics of the Greek labour market. Since 1990, the legislation of the collective bargaining system has prevented the functioning of a representative social dialogue. A large number of occupational and social groups remained on the periphery of collective bargaining conducted under state regulation and trade unions were over-represented, mainly in the public sector. On the contrary, the unemployed and private sector employees have been kept on the edge of Greek labour markets. Low confidence in the Greek labour market is reflected in a series of indicators such as low trade union participation (low union density) and the high number of strikes before and during the recession.
As a result, the collective voice was not representative and social dialogue was ineffective. Interestingly, Greece is the only EU country where the minimum wage is set unilaterally by the state in the final phase, without prior consultation of the social partners.