At Berlin-Brandenburg Airport, the announced warning strike by the Verdi trade union has begun among security personnel. On Monday morning from 3.30 a.m., numerous employees in the aviation security sector, in passenger control and personnel and goods control stopped work, as Verdi union secretary Enrico Rümker confirmed to the German Press Agency. Shortly after the warning strike was announced, the airport announced that no passenger flights would take off on Monday.

It is not only in the large hall of Terminal 1 that it will remain unusually quiet. Some planned landings are also cancelled. Verdi has called on workers to stop work by midnight.

The union wants to increase the pressure on employers, with whom it negotiates bonuses for unfavorable working hours, such as weekends, and rules on overtime pay. The action at the capital's airport joins a long list of strikes, especially in traffic, in recent weeks. Most recently, airports were on strike on Thursday, Friday and Saturday, and the railway and transport union also paralyzed rail traffic nationwide for hours on Friday.

BER itself is on strike for the third time this year, and on other days passengers at BER were indirectly affected by work stoppages at other airports. During the strike in mid-March, all departures of passenger flights were cancelled – as is now the case – and no aircraft was able to land at BER during the warning strike at the end of January.

"We once again urge the BDLS (Federal Association of Aviation Security Companies) to submit a negotiable offer on April 27 and 28 and not to continue playing for time, otherwise there is a threat of further strikes in air traffic in May and Pentecost," said Wolfgang Pieper of the Verdi trade union on Saturday about the ongoing wage dispute. The airport association ADV criticized the labor dispute as excessive and called for a quick solution at the negotiating table.