By way of derogation from article L. 4331-2, the following may also practise the profession of occupational therapist and bear the title of occupational therapist, whether or not accompanied by a qualification:
1° In public health establishments caring for people with mental disorders, nurses who joined the occupational therapy profession before 11 April 1983;
2° Employees who have worked mainly as occupational therapists for at least three years during the ten years preceding the date of 23 November 1986 and who have passed, within three years of this date, the knowledge test provided for by a Conseil d’Etat decree. Persons who have passed this test may, depending on their choice, only perform the acts listed by the aforementioned decree in establishments or services providing functional re-education and rehabilitation, mental health or geriatric treatment, respectively.