The Department of Infrastructure says 19 bus services are at risk of cancellation today.
Bus Vannin says routes between Douglas and Port Erin, Ramsey, Onchan and Willaston are at risk.
It's after weeks of disruption because of driver shortages and illness.
Today's problems include a number of commuter buses between 5pm and 6pm.
Repairs on Peel Power Station to get underway
Manx Care doctor survey to be discussed by Tynwald
Weather warning for snow tonight
MHK queries safety at primary school in Ballabeg
Gales put two ferry sailings at risk tonight
Should the Island throw a birthday party for Barry Gibb?
Warning issued over icy roads
High ground could see 4 inches of snow on Saturday night