SECTION 53

(1) At the request of one of the most representative trade-unions or employers' associations or on the initiative of the minister in-charge of employment, the provisions of a collective agreement which complies with conditions laid down by regulations may, by a decree issued after the National Labour Advisory Board has given its reasoned opinion, be rendered compulsory for all employers and workers within the industrial and territorial coverage of the said agreement. (2) Such extension of the rights and obligations provided under a collective agreement shall apply for the period and on the conditions laid down in the said agreement. (3) However, the extension decree may, after the National Labour Advisory Board has given its reasoned opinion and without altering the general effect of the agreement, exclude from such extension any clauses which are not in keeping with the conditions of the particular branch of activity in the scope of the agreement concerned.