ONLY THE RULES OF PROCEDURE BUT ALSO THE RULES OF EVIDENCE , IT IS SUFFICIENT TO POINT OUT , AS HAS BEEN INDICATED ABOVE , THAT ARTICLE 9 ( 1 ) OF DIRECTIVE NO 64/221 EXPRESSLY PROVIDES THAT THE PERSON CONCERNED MUST BE ENTITLED TO PUT FORWARD HIS ARGUMENTS IN DEFENCE BEFORE THAT AUTHORITY AND TO BE ASSISTED OR REPRESENTED IN SUCH CONDITIONS AS TO PROCEDURE AS ARE PROVIDED FOR BY DOMESTIC LEGISLATION . THOSE CONDITIONS MUST NOT BE LESS FAVOURABLE TO THE PERSON CONCERNED THAN THE CONDITIONS APPLICABLE TO PROCEEDINGS BEFORE OTHER NATIONAL AUTHORITIES OF THE SAME TYPE .
Decision on costs
COSTS
20 THE COSTS INCURRED BY THE BELGIAN GOVERNMENT , THE FRENCH GOVERNMENT , THE ITALIAN GOVERNMENT , THE NETHERLANDS GOVERNMENT , THE UNITED KINGDOM AND THE COMMISSION OF THE EUROPEAN COMMUNITIES , WHICH SUBMITTED OBSERVATIONS TO THE COURT , ARE NOT RECOVERABLE . AS THESE PROCEEDINGS ARE , IN SO FAR AS THE PARTIES TO THE MAIN PROCEEDINGS ARE CONCERNED , IN THE NATURE OF A STEP IN THE PROCEEDINGS PENDING BEFORE THE NATIONAL COURT , THE DECISION ON COSTS IS A MATTER FOR THAT COURT .
Operative part
ON THOSE GROUNDS ,
THE COURT
IN ANSWER TO THE QUESTIONS REFERRED TO IT BY THE PRESIDENT OF THE TRIBUNAL DE PREMIERE INSTANCE , LIEGE BY ORDERS OF 8 MAY 1981 , HEREBY RULES :
1 . A MEMBER STATE MAY NOT , BY VIRTUE OF THE RESERVATION RELATING TO PUBLIC POLICY CONTAINED IN ARTICLES 48 AND 56 OF THE TREATY , EXPEL A NATIONAL OF ANOTHER MEMBER STATE FROM ITS TERRITORY OR REFUSE HIM ACCESS TO ITS TERRITORY BY REASON OF CONDUCT WHICH , WHEN ATTRIBUTABLE TO THE FORMER STATE ' S OWN NATIONALS , DOES NOT GIVE RISE TO REPRESSIVE MEASURES OR OTHER GENUINE AND EFFECTIVE MEASURES INTENDED TO COMBAT SUCH CONDUCT .
2 . CIRCUMSTANCES NOT RELATED TO THE SPECIFIC CASE MAY NOT BE RELIED UPON IN RESPECT OF CITIZENS OF THE COMMUNITY , AS JUSTIFICATION FOR MEASURES INTENDED TO SAFEGUARD PUBLIC POLICY AND PUBLIC SECURITY .
3 . ANY NATIONAL OF A MEMBER STATE WHO WISHES TO SEEK EMPLOYMENT IN ANOTHER MEMBER STATE MAY , IF A MEASURE EXPELLING HIM FROM THE TERRITORY OF THAT STATE HAS PREVIOUSLY BEEN ADOPTED , REAPPLY FOR A RESIDENCE PERMIT . WHERE SUCH AN APPLICATION IS LODGED AFTER A REASONABLE PERIOD HAS ELAPSED , IT MUST BE EXAMINED BY THE APPROPRIATE ADMINISTRATIVE AUTHORITY IN THE HOST STATE , WHICH MUST TAKE INTO ACCOUNT , IN PARTICULAR , THE ARGUMENTS PUT FORWARD BY THE PERSON CONCERNED IN ORDER TO ESTABLISH THAT THERE HAS BEEN A MATERIAL CHANGE IN THE CIRCUMSTANCES JUSTIFYING THE FIRST EXPULSION MEASURE .
4 . THE NOTIFICATION OF THE GROUNDS RELIED UPON TO JUSTIFY AN EXPULSION MEASURE OR A REFUSAL TO ISSUE A RESIDENCE PERMIT MUST BE SUFFICIENTLY DETAILED AND PRECISE TO ENABLE THE PERSON CONCERNED TO DEFEND HIS INTERESTS .
5 . COMMUNITY LAW DOES NOT REQUIRE THAT THE COMPETENT AUTHORITY REFERRED TO IN