German union Verdi today called on workers at seven 7 airports in Germany to walk out 24-hour strike on Friday, noting that collective bargaining efforts have not made significant progress.

The airports affected by this strike action include its airport Frankfurt, which is the largest in the country, like those of Munich, Stuttgart, Hamburg, Dortmund, Hanover and Bremen, Verdi says in today’s announcement.

THE strike is expected to particularly affect the domestic flights, according to the union, which noted that it had given advance notice of the strike action so that passengers could find alternative options.

The union is currently in negotiations for three groups of workers, ground staff, public sector executives and aviation security workers.

“There continues to be a devastating shortage of ground handling workers — this was clearly felt by travelers last summer,” Verdi board member Christine Belle said in a statement issued by the union.

Fraport, the company that manages Frankfurt airport, which was used by more than 48 million travelers in 2022, has not yet responded to a Reuters request for comment on the news.