decis decemb common arrang adopt member state purpos reimburs institut introduct euro unit administr commiss european commun social secur migrant worker regard articl council regul eec june applic social secur scheme emploi person emploi person member famili move commun duti administr commiss deal administr matter question interpret aris regul eec subsequ regul regard council regul ec june provis relat introduct euro regard council regul ec introduct euro regard articl mention regul eec regard articl regul eec regard decis administr commiss octob model form applic council regul eec eec notabl form regard decis administr commiss jne amend form administr reason lai common arrang appli member state purpos reimburs institut changeov euro accept transit period januari decemb oblig exist member state euro unit unit account similarli refund cost benefit kind transit period oblig impos provis case extend decemb avoid disput member state decid period januari decemb claim contain form express nation currenc unit member state intend chang nation currenc unit euro submit claim inform member state delai administr commiss convers rate nation currenc member state adopt euro lump sum articl regul eec express euro unit nation currenc unit publish offici journal european commun period begin januari januari form express euro unit member state adopt euro unit addit section form seapart express euro unit claim form submit nation currenc unit januari refund date convert euro unit convert total avoid disput separ section form convert itno euro unit converst carri institut liaison bodi compet author hold claim moment claim form submit nation currenc unit januari refund date convert euro unit monthli averag cost convert euro unit administr commiss publish offici journal european commun convers carri institut liaison bodi compet author hold claim moment provis changeov euro secretariat administr commiss determin septemb latest year claim articl regul eec settl statement claim articl regul eec balanc claim notifi member state nation currenc unit changeov euro make deduct disput notifi payment provid bilater agreement settl decemb avoid lengthi transit period member state respect deadlin fix articl regul eec provid bilater agreement member state request make effort achiev measur propos recommendatioon administr commiss speed settlement claim decis applic dai month public offici journal european commun chairman administr commiss helmut siedl