Members of the Rail, Maritime and Transport (RMT) union are threatening plans for a 48 hour walk out every weekend in December.
Following a long dispute over pay and working conditions, more than 2,000 employees including conductors, station staff and engineering depot staff would walk out every Friday and Saturday next month until December 24.
While ScotRail bosses have said that no formal confirmation of strike action has been issued, according to the BBC, if the dispute is not resolved, this would cause havoc around the festive period.