1 . FREE MOVEMENT OF PERSONS - EXCEPTIONS - POSTS IN THE PUBLIC SERVICE - CONCEPT - PARTICIPATION IN THE EXERCISE OF POWERS CONFERRED BY PUBLIC LAW AND PROTECTION OF THE GENERAL INTERESTS OF THE STATE - NURSING STAFF ( EEC TREATY , ART . 48 ( 4 )) 2 . FREE MOVEMENT OF PERSONS - WORKERS - EQUAL TREATMENT - APPOINTMENT AND ESTABLISHMENT IN PERMANENT EMPLOYMENT AS NURSES IN PUBLIC HOSPITALS RESTRICTED TO NATIONALS ( EEC TREATY , ART . 48 ( 2 ) AND ( 4 ))