Ground staff at Lufthansa have walked out on strike, forcing Germany's biggest airline to cancel hundreds of flights.
The ver.di union called workers at several airports including Frankfurt and Munich, out on a so-called warning strike ahead of wage negotiations.
The walkouts were due to continue until late morning.
Ahead of the strikes, Lufthansa cancelled nearly 700 flights, including much of the morning's domestic and European flight schedule.
The union and Lufthansa are to meet tomorrow to discuss ver.di's demand for a 5.2% increase over the next year for 33,000 Lufthansa employees.
Ver.di says Lufthansa's call for a two-year pay freeze until January 2015 and the extension of the work week by an hour is unacceptable.