As an EU Citizen you can become an au pair in Denmark. The stay is not regulated by the rules in the Danish Immigration Act on au pairs, but by the EU Residence Order (article 3).

EU citizens may freely enter, stay and work in Denmark for up to three months. As an EU citizen you do not need a work permit, but if your stay exceeds three months, you must apply for an EU residence document at the Regional State Administration (Statsforvaltningen). If you are a job-seeker you may stay in Denmark for up to six months without an EU residence document.

If you wish to stay as an au pair with a host family in Denmark for more than three months, you must therefore apply for an EU residence document. You should apply for a residence document before the three month period expires. The residence document is proof that as an EU citizen you have a right to reside in Denmark. You also need the residence document in order to enrol in the National Register of Persons (CPR-registret) in your municipality.

When you apply for a residence document at the Regional State Administration, your host family must fill out an employment declaration (arbejdsgivererklæring). The declaration stipulates the agreed salary and number of working hours. Normally, you must work no less than 10-12 hours per week. The salary must as a minimum be equivalent to the level of Danish Start Help benefits (starthjælp), wherefrom the value of food and lodging may be subtracted. Thus, the regulations on salary and number of working hours are not the same for EU-citizens as for au pairs from outside the EU.

You can read more about EU residence, how to apply for a residence document etc., at the websites of the Danish Immigration Service and the Regional State Administration. You may also contact the Regional State Administration by phone, e-mail or in person.