The Oxford Bus Company is warning passengers that they will face "significant disruption" during two days of planned strikes.
The Company said it had been unable to reach a settlement with the Unite union in a dispute over drivers' pay for the Christmas 2016 period.
Union members will strike on Thursday 2nd March and Monday 6th March.
The bus company is advising its passengers to make alternative travel arrangements.
We're sorry and concerned to hear that Unite, the union representing around 70% of our people, is intending to take strike action on the 2nd and 6th of March 2017. We understand this is in relation to Christmas and New Year working arrangements from last year.
This is disappointing as we've made a number of offers to Unite to settle the dispute but these have been rejected without consulting their members. Also we're disappointed that Unite has chosen not to follow the agreed dispute resolution procedure before triggering the ballot.
We're very keen to resolve the dispute, and our door is open for talks, but in the meantime we're putting plans in place to make sure we can offer customers the best service possible if strikes go ahead. Special contingency timetables are available for our customers on our website, and will shortly be available in print form."