Onti West Coast train managers have voted to strike for three days over the Christmas period.
The RMT union said walkouts have been set for December 22, 23 and 29 on the London to Scotland service after rejecting train company proposals for “rest day work arrangements”.
Train managers normally work four days a week but could be asked to work on days off due to staff shortages but the RMT said the current arrangements were “unacceptable”.
Avanti West Coast has been contacted for comment.