BERLIN — German labour union ver.di says its members will stage a ****** Tuesday at Frankfurt airport, Germany’s biggest. The move prompted Lufthansa to cancel more than 800 flights.

The ****** is part of a broader dispute over pay in German public-sector jobs that also includes utility companies, kindergartens and municipal administrations.

Ver.di said Monday that strikes are also planned at Munich and Bremen airports. Lufthansa, Germany’s biggest *******, said it was cancelling more than 800 planned flights, including 58 intercontinental connections.

It said that about 90,000 passengers would be affected, and that it plans to return to a regular schedule on Wednesday.

The union is demanding a 6%, or at least 200 euros ($245) per month, pay rise for some 2.3 million public-sector employees. Its members include some airport ground staff and **** officers.