It says this is due to 'continued high levels of staff absence'.
Bus Vannin is warning of possible disruption to services this weekend.
In an update on Facebook, it said its team is working to ensure service provision is covered and any disruption is minimised.
Updates will be provided at the earliest opportunity from late this afternoon onward and updated throughout the day/weekend.
Charity reflects on Island's role in World War 1
Road closure extended into third month