Coming to work for a Finnish employer
If you work for a Finnish employer, you are usually liable to pay Finnish taxes on your pay. If your employer operates business in Finland and has a permanent establishment in Finland, they are treated as a Finnish employer even if they were from outside Finland.
Your taxation may be different if you are
Your taxation depends on how long you stay in Finland.
Staying in Finland for 6 months or less
Employer: Guidance on how to help your construction workers with their tax matters before they start working.