OF THAT PERIOD .
14 THOSE ESSENTIAL REQUIREMENTS ABOLISH ALL DISCRIMINATION AGAINST THE PERSON PROVIDING THE SERVICE BY REASON OF HIS NATIONALITY OR THE FACT HE IS ESTABLISHED IN A MEMBER STATE OTHER THAN THAT IN WHICH THE SERVICE IS TO BE PROVIDED .
15 THE FEDERAL GERMAN GOVERNMENT AND THE DANISH GOVERNMENT MAINTAIN THAT THE LEGISLATION OF THE STATE IN WHICH THE SERVICE IS PROVIDED MUST , AS A GENERAL RULE , BE APPLIED IN TOTO TO ANY PERSON PROVIDING SUCH SERVICES WHETHER OR NOT HE IS ESTABLISHED IN THAT STATE BY VIRTUE OF THE PRINCIPLE OF EQUALITY AND , IN PARTICULAR , THE THIRD PARAGRAPH OF ARTICLE 60 OF THE TREATY , ACCORDING TO WHICH THE PERSON PROVIDING A SERVICE MAY , IN ORDER TO DO SO , PURSUE HIS ACTIVITY IN THE MEMBER STATE WHERE THE SERVICE IS PROVIDED UNDER THE SAME CONDITIONS AS ARE IMPOSED BY THAT STATE ON ITS OWN NATIONALS .
16 THE PRINCIPAL AIM OF THE THIRD PARAGRAPH IN ARTICLE 60 IS TO ENABLE THE PROVIDER OF THE SERVICE TO PURSUE HIS ACTIVITIES IN THE MEMBER STATE WHERE THE SERVICE IS GIVEN WITHOUT SUFFERING DISCRIMINATION IN FAVOUR OF THE NATIONALS OF THAT STATE . HOWEVER , IT DOES NOT MEAN THAT ALL NATIONAL LEGISLATION APPLICABLE TO NATIONALS OF THAT STATE AND USUALLY APPLIED TO THE PERMANENT ACTIVITIES OF UNDERTAKINGS ESTABLISHED THEREIN MAY BE SIMILARLY APPLIED IN ITS ENTIRETY TO THE TEMPORARY ACTIVITIES OF UNDERTAKINGS WHICH ARE ESTABLISHED IN OTHER MEMBER STATES .
17 IN THE ABOVE-MENTIONED JUDGMENT OF 18 JANUARY 1979 THE COURT HELD THAT , REGARD BEING HAD TO THE PARTICULAR NATURE OF CERTAIN SERVICES , SPECIFIC REQUIREMENTS IMPOSED ON THE PROVIDER OF THE SERVICES CANNOT BE CONSIDERED INCOMPATIBLE WITH THE TREATY WHERE THEY HAVE AS THEIR PURPOSE THE APPLICATION OF RULES GOVERNING SUCH ACTIVITIES . HOWEVER , THE FREEDOM TO PROVIDE SERVICES IS ONE OF THE FUNDAMENTAL PRINCIPLES OF THE TREATY AND MAY BE RESTRICTED ONLY BY PROVISIONS WHICH ARE JUSTIFIED BY THE GENERAL GOOD AND WHICH ARE IMPOSED ON ALL PERSONS OR UNDERTAKINGS OPERATING IN THE SAID STATE IN SO FAR AS THAT INTEREST IS NOT SAFEGUARDED BY THE PROVISIONS TO WHICH THE PROVIDER OF THE SERVICE IS SUBJECT IN THE MEMBER STATE OF HIS ESTABLISHMENT .
18 IT MUST BE NOTED IN THIS RESPECT THAT THE PROVISION OF MANPOWER IS A PARTICULARLY SENSITIVE MATTER FROM THE OCCUPATIONAL AND SOCIAL POINT OF VIEW . OWING TO THE SPECIAL NATURE OF THE EMPLOYMENT RELATIONSHIPS INHERENT IN THAT KIND OF ACTIVITY , PURSUIT OF SUCH A BUSINESS DIRECTLY AFFECTS BOTH RELATIONS ON THE LABOUR MARKET AND THE LAWFUL INTERESTS OF THE WORKFORCE CONCERNED . THAT IS EVIDENT , MOREOVER , IN THE LEGISLATION OF SOME OF THE MEMBER STATES IN THIS MATTER , WHICH IS DESIGNED FIRST TO ELIMINATE POSSIBLE ABUSE AND SECONDLY TO RESTRICT THE SCOPE OF SUCH ACTIVITIES OR EVEN PROHIBIT THEM ALTOGETHER .
19 IT FOLLOWS IN PARTICULAR THAT IT IS PERMISSIBLE FOR MEMBER STATES , AND AMOUNTS FOR