Strike action could be on the cards at Irish Rail, after Siptu workers voted to reject Labour Court recommendations on a cost-saving plan.
The company wants to change workers' terms and conditions in a bid to save €8.7m this year.
Siptu balloted its staff on the proposals - which they rejected by 51% to 49%.
The union says it will now meet with management to discuss the situation and ballot its members on strike and industrial action.