24/12, New Years Eve and Wednesday in the Easter week are half holidays for many here
Don't get me started on the half day before a public holiday in Sweden. Haha.
But they are actually up to local agreements in companies in Sweden, not a legally set thing. I assume the same in Norway.
A lot of companies in Denmark close the 31st of December, and even the 27th to 30th of December to the extend that they sre on week days, some put it as forced holidays coming out of the yearly allotment, and some just give extra days off.