Security van workers at cash-in-transit firm Brinks Allied were today entering their second day on the picket lines.
Banks have assured customers that no further ATMs on the east coast will run out of cash due to the row over work practices.
The three-week-old dispute, which has left around 200 cash dispensers out of order, escalated yesterday as Siptu members moved to strike after bosses at the company turned down a Labour Court recommendation.
Brinks Allied said new security vans and procedures were designed to protect staff, customers and the public in the face of a spate of armed robberies as cash machines are refilled.
Siptu members said they would not drive away the security van and leave a colleague behind in an attempted robbery.
The workers will return to their picket lines at the company's headquarters in Clonshaugh north Co Dublin today.
There are fears the cashflow problem could develop further as Siptu members from all the cash-in-transit companies have agreed they will not carry out work normally done by Brinks Allied employees.
The row, which has halted cash deliveries, has affected non-bank branch ATMs, although cash dispensers at banks and shopping centres are still operating.
PA