Public worker's union Verdi said late on Monday that it had called the warning strikes to increase pressure on Germany's largest airline, and said it expects the strikes to cause severe disturbances in the airline's scheduling.
According to Verdi in the German state of Hesse, all Lufthansa workers in Frankfurt would cease work at 4 am, with a central strike gathering scheduled for 9 am.
The strike will also begin at 4 am in Munich, and workers plan to head back to their stations at 8 am, Verdi said.
In Nuremberg, workers will begin their warning strike at 11:45 am, and stay off the job for several hours.
Verdi is demanding a wage increase of 9.8 percent for Lufthansa workers, but Lufthansa has only most recently offered a two-step raise of 3.4 and 2.1 percent to take place over the course of 19 months.
The third round of negotiations between Verdi and Lufthansa begins on July 3.