Why you need it? The certificate is needed for all employed persons who have work connections in more than once country in which an A1 is required. This is so a worker can prove their current social security contributions and will not be obligated to pay contributions in the other countries.

Is A1 certificate mandatory?

The A1 form is required in all EU countries, EEA countries and Switzerland. It allows workers to prove their current social security contributions so that they are not obligated to pay social insurance contributions elsewhere.

Who needs to apply for A1 certificate?

How to get the A1 certificate? Persons who are self-employed in two or more countries of the European Union can apply for the A1 certificate by applying to the ZUS US-2. The application can be filled out and filed in a paper version on the ZUS device or in an electronic version through the ZUS PUE platform.