[1/5] A general view inside the Munich Airport during a strike called by the German trade union Verdi over a wage dispute, in Munich, Germany, March 26, 2023.
"The people are not only underpaid, they are hopelessly overworked," Frank Werneke, head of the Verdi labour union, told Bild am Sonntag.
The Verdi union is negotiating on behalf of around 2.5 million employees in the public sector, including in public transport and at airports.
Railway and transport union EVG negotiates for around 230,000 employees at Deutsche Bahn (DBN.UL) and bus companies.
"It is a matter of survival for many thousands of employees to get a considerable pay rise," he said.