Participation agreements are concluded in one of the following ways:
1° By collective labour agreement ;
2° By agreement between the employer and the representatives of representative trade union organisations in the company;
3° By agreement reached within the social and economic committee;
4° Following ratification, by a two-thirds majority of the workforce, of a draft contract proposed by the employer. If there are one or more representative trade union organisations or a social and economic committee in the company, ratification is requested jointly by the employer and one or more of these organisations or this committee.