The Mayor of Copenhagen has reportedly banned city officials from flying with Ryanair.
Frank Jensen issued the order to the city's 45,000 officials in protest at wages paid to the airline staff and their lack of a collective bargaining agreement with Denmark.
According to media reports, Ryanair is not to be used for official business even if it is the cheapest option.
Ryanair has hit back at the allegations calling them inaccurate.