Labour union Verdi and the BDLS association of aviation safety companies said on Monday that a comprehensive collective agreement had been reached.

"With this collective bargaining agreement, wage conditions in the aviation security industry and work can be made more attractive, despite unfavourable working hours and numerous operational problems," said chief negotiator Wolfgang Pieper.

The agreement foresees wage increases for 25,000 employees in three stages over the next two years.

BDLS negotiator Rainer Friebertshaeuser, who put wage increases at up to 28%, said the package means massive cost increases for employers that are "very painful."

Airlines are reeling from soaring fuel prices and airspace closures because of the war in Ukraine.

(Reporting by Ilona Wissenbach, Writing by Miranda Murray, editing by Thomas Escritt and Grant McCool)