Passengers walk in a terminal of the international airport in Frankfurt, Germany. Photo / AP
Thousands of passengers have been stranded at German airports as more than 60,000 ground staff and other public sector workers staged walkouts across the country to increase the pressure in a pay dispute.
Lufthansa had said it was cancelling more than 800 of its planned 1600 flights today and Frankfurt airport operator Fraport had warned of disruption.
As well as Frankfurt, Germany's busiest hub for airlines, the strikes hit airports in Munich, Cologne and Bremen.
The industrial action also affected nurseries, rubbish collection services and swimming pools in several German states.
German union Verdi wants a 6 per cent pay rise for its 2.3 million public sector employees at the federal and local level. Germany's federal government and municipalities have rejected that, saying such a rise would force them to outsource jobs.
The union said more than 60,000 workers in eight German states took part in the strikes, and further walkouts were planned across the country in coming days.
Verdi said it was asking 15,000 employees at Deutsche Telekom to join the strikes tomorrow, mostly in the services and technical sectors.
Some air passengers expressed frustration over the delays.
"I'm upset. I'm affected by these strikes too often," said Roswitha Karl, who was at Frankfurt airport waiting to board a flight to Moldova for a holiday.
"First, there was the pilots' strike, then the ground staff and then the security staff, it's a matter of luck," said Karl.
Airline rebooking counters had a long queue of passengers, while other stranded travellers were waiting in the terminal.
While some frantically tried to change their reservations, others took the delays in their stride. Jana Glaeser had arrived in Frankfurt from Miami and her flight to Berlin was cancelled. "Now we're getting a train ticket instead. Hopefully everything works out," she said.
In western North Rhine-Westphalia, Germany's most populous state, local transport, public utilities and childcare centres were hit. There were long tailbacks on motorways, and in southern Baden-Wuerttemberg buses and local trains stayed in depots.
"We want to send a clear signal to employers with these massive strikes," said Frank Bsirske, head of Verdi, Germany's biggest labour union for service sector employees. He said the union would escalate the dispute if employers did not present an offer next week. The third round of talks starts on April 15.