council resolut transform undeclar work regular employ council european union european council success meet luxembourg lisbon stockholm nice barcelona brussel reiter strategi job remain top prioriti european union member state commiss commun undeclar work comprehens target strategi involv polici mix base prevent essenti combat undeclar work effect invit member state regard combat undeclar work part employ strategi council repres govern member state meet council april adopt resolut code conduct improv cooper author member state combat transnat social secur benefit contribut fraud undeclar work transnat hire worker council decis guidelin employ polici member state adopt specif guidelin transform undeclar work regular employ minist employ social affair european union inform meet vares juli recal transform undeclar work regular employ contribut achiev full employ improv qualiti product work strengthen social cohes inclus elimin poverti trap avoid market distort heterogen natur undeclar work difficult estim scale problem studi estim size inform economi averag eu gdp undeclar work strong implic worker busi consum gender equal social protect system commiss commun june immigr integr employ state sector undeclar work illeg immigr feed clear link gener polici combat undeclar work illeg immigr transform undeclar work regular employ part effect implement employ guidelin requir activ particip social partner stage design polici implement social partner multi annual work programm agre hold seminar undeclar work recal employ guidelin undeclar work adopt juli quot member state develop implement broad action measur elimin undeclar work combin simplif busi environ remov disincent provid incent tax benefit system improv law enforc applic sanction undertak effort nation eu level measur extent problem progress achiev nation level quot commiss commun undeclar work defin quot paid activ law natur declar public author take account differ regulatori system member state quot call member state resolut refer framework member state develop implement polici context european employ strategi respect nation circumst prioriti account action outlin resolut report princip measur implement employ polici light specif guidelin undeclar work futur nation action plan work examin common featur undeclar work member state address common approach framework european employ strategi prevent action sanction aim elimin undeclar work develop comprehens approach keep european employ strategi base prevent action encourag employ employe oper formal economi context regular employ measur respect sustain public financ social protect system includ creation legal administr environ favour declar econom activ employ simplifi procedur reduc cost constraint limit creation develop busi start up small undertak strengthen incent remov disincent declar work demand suppli side review reform tax benefit system interact reduc high margin effect tax rate tax burden low paid worker set suitabl employ polici vi vi beneficiari social protect measur particip regular labour market reduc risk unemploy poverti trap elimin undesir interact tax benefit system strengthen surveil activ support social partner applic sanction respect organis benefit clandestin labour whilst ensur protect victim undeclar work cooper relev author inter alia tax offic labour inspector polic nation practic strengthen context improv law enforc capabl regard european nation legisl protect right individu transnat cooper compet bodi member state transnat econom activ concern cooper compet bodi design member state view combat social secur fraud undeclar work accord resolut council repres govern member state meet council rais social awar order enhanc efficaci mix measur provid inform public neg implic undeclar work social secur consequ undeclar work solidar fair effort measur extent problem progress achiev improv knowledg extent undeclar work estim scope inform economi undeclar work nation level basi data social secur institut tax author ministri nation statist offic contribut develop measur undeclar work eu level order gaug progress achiev object transform undeclar work regular employ seek cooper nation statist offic methodolog foster exchang expertis issu invit social partner european level consist address issu undeclar work context jointli agre multi annual work programm deal undeclar work sector level context sector social dialogu committe nation level promot declar econom activ employ combat incid undeclar work awar rais action collect bargain undertaken accord nation tradit practic wai contribut inter alia simplif busi environ small medium size enterpris concern invit european commiss highlight develop basi experi member state context european employ strategi includ organis peer review assess methodolog improv descript problem monitor progress take account recent research subject oj