He refereed the Norwegian Cup Final between Strømsgodset and Follo.
Hagen represents Grue Idrettslag and works as a teacher alongside the refereeing.
[5] He got his second Champions League match on 22 November 2011, when Basel won Oțelul Galați 3–2 in Bucharest.
[6] On 20 December 2011, it was announced that Hagen would be one of four designated fourth officials during UEFA Euro 2012 in Poland and Ukraine.
This biographical article relating to Norwegian football is a stub.