Lufthansa employees in technology, logistics, freight and IT go on warning strike. Ground staff at Frankfurt, Munich, Hamburg, Berlin, Düsseldorf, Cologne/Bonn and Stuttgart will follow on Tuesday at 4 a.m.

The airline wants to get ten to 20 percent of its planned program of around 1,000 flights into the air on Tuesday. During the first wave of warning strikes almost two weeks ago, around 900 flights were canceled and more than 100,000 passengers had to reschedule.