Of course you will have to do your own investigation depending on the salary and benefits you are being offered.
Any chance you can take a trip there if you have not been?
I found that when moving to the USA from my home country there were more differences that I thought. But I did lengthy research about the cost of living, best locations for housing, importing or buying a car, having to do a new written and in car driving test, getting social security card, health benefits, researching new credit cards option (had to start getting credit again in new country), research cell phones carriers, insurance providers, etc. By doing at of that well ahead of time, I had a good idea of what to expect. Sadly I cannot provide all that info about Norway. But I have been there and LOVED it. I thought the people were very nice...loved how Oslo was walkable...did not get to explore the whole country. You may have to look into electric cars...I have never so many in my life! Good for them. (gas is very expensive I believe)
Are you ready for not much daylight during winter...amazing landscapes...and to sit outside on a patio when it is -15 and sharing a drink with a friendly Norwegian? Then it may be for you. :)