The Finnish Aviation Union (IAU) has issued a warning for new industrial action, amid failed negotiations about collective agreements in the aviation industry.
The work stoppage is scheduled for Monday 5 May. If it goes ahead, the industrial action will affect more than 300 employees who work for Finnair's passenger, ground handling and cargo services.
According to an IAU press release, the work stoppages will also impact ground- and cargo handling services of other airlines.
Last week, the IAU also announced plans for a four-hour work stoppage on Friday 2 May.
The aviation union has been in negotiations with the employers' group Palta regarding collective agreements for air transport service workers since the end of January.