The remuneration paid by the employer to the donor in respect of his professional activity may be maintained during the time devoted to the donation without constituting payment within the meaning of article L. 1211-4, provided that the duration of the absence does not exceed the time required to travel between the place of work and the place of donation and, where applicable, to return, as well as for the interview and medical examinations, the donation operations and the rest and snack period deemed medically necessary.