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This is just like Dutch lunch. Indeed, I'm not sure what's special about it. Definitely not limited to Norway. My previous girlfriend was also Dutch and used to this kind of lunch. Her employer sent her to London for a month, and she got used to expensive lunches. Spending a couple of pounds everyday on lunch, hoo boy, that adds up.
I worked in the Netherlands on and off for several years, and the thing I never got used to was how appalling the lunches were. I did a presentation at KLM corporate headquarters, and at lunch asked the people I was presenting to - "How do you put up with this, day after day?" They all looked glum, and said "There is no alternative". And don't get me started on what passes as Chinese food in the Netherlands.
Some offices have cantines and many of them are terrible. I was a Dutch office worker for 10 years in different offices and ate all kinds of different things. Now I work from home and continue to eat sandwiches almost every day. I just like them.
As for the Chinese food. You need to go into a big city and eat it. Don't eat Dutch Chinese food in small villages or suburban areas. Both Rotterdam and Amsterdam have amazing Chinese food. And I bet you never even tried Surinamese food before..