Earlier, the German organisation IG Metall said that Tesla's pay were about 20% less than average.
the ones provided by the collective bargaining agreement.
Around 11,000 people are now employed by Tesla at the facility.
will need to hire more personnel to carry out a massive expansion that is scheduled to start.
Its battery capacity and vehicle output will double in the first part of the next year.
Tesla informed employees of the impending rise, according to IG Metall.
at a number of meetings held this week at the plant.
The staff was informed of IG Metall's "questionable methods" at the sessions.