No Translink buses or trains will be operational on 22 December.
Further disruption is expected to public transport in Northern Ireland on Friday as three trade unions take part in strike action.
Unite, GMB and Siptu union members are involved in industrial action in a dispute about pay.
This follows on from two days of strike action last week. which led to no public bus or train services.
Normal timetables will resume on 23 December after Friday’s action.
Representatives from all three unions said they will be meeting early in the new year to discuss and identify further strike dates.
Translink has apologised to its passengers for any inconvenience this may cause.
This is the fourth day of action since the start of the month.
‘Cruelly dangling funding’
Translink has previously said it could not make a pay offer because in the Stormont Budget set by Northern Ireland Secretary Chris Heaton-Harris earlier this year it did not receive a budget for it from the Department for Infrastructure.
Money to settle public sector pay claims was part of the financial package offered during talks with the Stormont parties in an attempt to reach an agreement on the restoration of the executive.
However, those talks ended on Tuesday without agreement.
Image source, Getty Images
Hospitality and retail bodies have urged the trade unions to reconsider their pre-Christmas action
GMB organiser Peter Mackin said the secretary of state was “cruelly dangling funding for a pay increase in front of workers”.
In a statement, Translink said it remained committed to “entering constructive pay negotiations”.
“However, this can only be done once the budget issue has been resolved,” it added.
“This situation impacts all public sector workers and needs to be resolved at the NI Executive level.”
The company urged workers to reconsider and pause the action “in light of the social and economic impact it will have at this time”.
The strike comes as hospitality and retail experience their busiest period in the run-up to Christmas.
The Northern Ireland Retail Consortium has appealed to the unions to call off the strike on what it said was an “important day in the retail, and indeed the hospitality industry”.
