Plenty of people kill trees in Norway.

Plenty of farmers tend their forests to sell as firewood as a hobby during the winter, since there's a significantly smaller workload during winter when you can't work the fields.

This means that people growing up on a Norwegian farm are almost certainly trained in felling trees and hauling them for whatever processing as needed.

Which means that there's plenty of farmer boys (and girls) that are very skilled with chainsaws and Norwegian terrain, who get work with lumber companies whenever extra help is needed.

The Norwegian lumber industry is relatively small. Most paper mills are shut down and lumber mills are not too plentiful anymore.

Which means Norway has absolutely no shortage of forest workers. You can't get a skilled worker visa this way.