The glossary provides a list of terms used in the ELA website, documents and publications. These are not official definitions and will be continuously up-dated.
Glossary of terms (2018)
English (571.33 KB - PDF)Starting with "A" (1)
A1 form
Portable document certifying that a mobile worker in the European Union or EFTA countries and Switzerland is registered in the social security system of the country that issued it