Rheinbahn's bus lines cover Düsseldorf, Meerbusch and most parts of Kreis Mettmann.
Rheinbahn is a member of the Verkehrsverbund Rhein-Ruhr (VRR), the public transport association covering the area of the Rhine-Ruhr megalopolis.
Although the company indicated that it was attempting to resolve this contractual oversight amicably, this strategy relied entirely on the agreement and goodwill of each employee, as the contracts were considered legally watertight.
Rheinbahn spokesman Georg Schumacher stated that over 100 such contracts had been issued in total.
According to the Munich-based tabloid TZ, several of these contracts are for senior managers who earn in the region of €8,000 per month.