Háfoss was employed by the Danish Ministry of Foreign Affairs 1998–1999, by the Ministry of Finance 1999–2000 and by the Prime Ministers Office in the Faroe Islands in the summer periods of 1999 and 2000.
Háfoss var ansat i det danske Udenrigsministerium 1998–1999, i Finansministeriet 1999–2000 og ved Lagmandskontoret på Færøerne somrene 1999 og 2000.