Bus drivers could walk out each weekend until an agreement is reached with the government.
After voting for strike action last December, Unite the Union's members will walk out for 10 days from Saturday, February 21.
It's involved in a dispute with the Department of Infrastructure over pay and conditions.
However, if no settlement is found then plans are in place to hold more strikes each weekend from Friday, March 6.
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