From today some cross-border bus services will be cut.
The lines affected are the F bus to Gex and the 66 and 68 to Thoiry.
The services are run by the local French department on behalf of the TPG.
The F bus will lose around one service in every 5 and the others may have more last minute cancellations.
Managers say the reason is due to high levels of absenteeism and difficulties in recruitment.