But construction workers are still people and they would like employment

Neoliberalism and right-wing austerity.

Also, earlier Nokia got sniped by Microsoft and profitable wood industries were decimated by transition from paper magazines (high quality, high value add paper) to digital (no paper) --> industry now makes pulp, which is low-value-add.

Their economy has been struggling for a while, having the highest unemployment rate in the EU and a large deficit.

Among other things, this has been caused by the downfall of Nokia and the paper industry as well as the collapse of trade and tourism with Russia.

High tech industry couldn't compete against the Chinese, the Ukraine War killed a huge chunk of export industries, aging population, successive governments shifting money from one welfare pocket to another, escalating unemployment eroding tax base and now when the money has ran out, aggressive austerity measures.