Inden udstationeringen starter, skal den arbejdsgiver, der udstationerer den nationale ekspert, attestere over for generalsekretariatet, at den pågældende under hele udstationeringen vil være omfattet af de sociale sikringsbestemmelser, der gælder for den offentlige administration eller den internationale organisation, samt påtage sig de i udlandet afholdte omkostninger.
Before the period of secondment begins, the employer from which the national expert is to be seconded shall certify to the GSC that, throughout the period of secondment, the SNE will remain subject to the social security legislation applicable to the public administration or international organisation which employs the SNE and which will assume responsibility for expenses incurred abroad.