1 . FREEDOM TO PROVIDE SERVICES - SERVICES - CONCEPT - PROVISION OF MANPOWER ( EEC TREATY , ART . 60 , FIRST PARAGRAPH ) 2 . FREEDOM TO PROVIDE SERVICES - RESTRICTIONS - PROHIBITION - DIRECT EFFECT ( EEC TREATY , ARTS 59 AND 60 ) 3 . FREEDOM TO PROVIDE SERVICES - RESTRICTIONS JUSTIFIED BY GENERAL GOOD - PERMISSIBILITY - CONDITIONS ( EEC TREATY , ARTS 59 AND 60 ) 4 . FREEDOM TO PROVIDE SERVICES - UNDERTAKINGS PROVIDING MANPOWER - PURSUIT OF ACTIVITY - LICENSING SYSTEM - LAWFULNESS - CONDITIONS ( EEC TREATY , ARTS 59 AND 60 )