Olsen was nominated as the Labour Party's fourth candidate for Østfold at the 2009 Norwegian parliamentary election,[1] and won a seat after a strong performance in that county.
[2] Her issues in the campaign were on healthcare, in particular she supported the construction of a new hospital in Halden.
[4] She has also been the leader of the Halden division of the LO trade union confederation.
[3] Apart from politics, Olsen started her career as a cleaner at Halden sykehus in 1982, and she has since advanced to head of the cleaning and textile department at Sykehuset Østfold from 1999.
She held that position until her election to parliament and is now on leave from that job.