Without prejudice to the principle of exclusivity provided for in Article L. 1251-2, periods spent by temporary employees on the following are treated as assignments:
1° To training courses, skills assessments or actions to validate acquired experience. These periods are carried out either on the employer’s initiative as part of the company’s training plan, apprenticeship contract or professionalisation contract, or on the employee’s initiative as part of a specific leave mentioned in article L. 6323-17-1 or a skills assessment leave;
2° To training courses related to their professional activity under the conditions laid down by the agreement or extended collective agreement or by the agreement or agreement of the company or establishment.