MUNICH, Germany, March 21 (Xinhua) -- Employees of German Airline Lufthansa started warning strike early on Thursday morning at all major German airports, demanding wage increase and job protection.
Employees in Munich, Frankfurt, Berlin, Hamburg, Cologne and Dusseldorf begun to lay down their work from 5 a.m. (0400 GMT). The warning strike will last until 12 o'clock, local newspaper Sueddeutsche Zeitung cited the Verdi union as reporting.
Travelers would expect till late afternoon with flight delays. In Munich alone, more than 200 flights can be cancelled.
Lufthansa announced cancellation of more than 670 flights in Germany and Europe as a precaution one day ago.
Almost all affected flights are in Germany and Europe. Intercontinental traffic should however be maintained, according to the Verdi.
The Verdi union demands 5.2 percent wage increase and more job protection, while the airline expects its employees to work longer hours as a contribution to the saving program.