If you want to work in the Netherlands for more than 4 months, but live outside the Netherlands, then you must register as a non-resident (‘niet-ingezetene’). You can do so at one of 19 offices of the Dutch government in the municipalities of Alkmaar, Almelo, Amsterdam, Breda, The Hague, Doetinchem, Eindhoven, Groningen, Goes, Heerlen, Leeuwarden, Leiden, Nijmegen, Rotterdam, Terneuzen, Utrecht, Venlo, Westland and Zwolle. These are offices of the Registry for Non-Residents (RNI).