Registering your arrival :
Denmark
Registering your arrival
As an EU national you do not need a work permit to work in Denmark. However it is always best to be prepared, and have employment set up before you go. You are able to enter the country as a tourist and to look for a job once you arrive.
As an EU Citizen, you are entitled to stay freely in Denmark for 3 months or if searching for work, 6. If you plan on staying longer than this, you must apply for a residence certificate. Although you don't officially have to register for residency or with the National Registration Office immediately on arrival, it is highly recommended that you do. Many aspects of day to day living will become impossible without your CPR number which will be issued there.
Work in Denmark - Arrival
Work in Denmark - Residence for EU/EEA citizens