If you apply for a residence permit extension only after your previous permit has expired, you are allowed to reside in Finland during the application's processing but you are not allowed to work before you get a new residence permit.
Kui sa taotled elamisloa pikendamist alles pärast su eelmise elamisluba lõppemist, võid viibida Soomes taotluse menetlemise ajal, aga sul ei ole õigust tööd teha enne kui saad uue elamisloa.