(1) The labor legislation, including the labor protection legislation, shall apply to apprentices and employees who have concluded a contract for continuous professional training.

(2) The clauses of the apprenticeship contracts and of the continuous professional training contracts that contravene the legislation in force, the provisions of the collective agreements and of the collective labor contracts are considered null and inapplicable.

(3) The employer shall ensure, through an appropriate control, carried out jointly with the employees' representatives, the efficiency of the apprenticeship system and of any other system of staff training and their adequate protection.