EU or EEA nationals require a valid passport (or a valid ID card) to enter Slovakia. At present EEA nationals have the right to remain as permanent residents in the Slovak Republic. During their permanent residency they can work, conduct business or study.
EEA nationals have the right to remain in the Slovak Republic for up to three months as tourists, as students taking short-term courses or as persons in short-term employment. If they wish to remain for longer, they must register as residents.