Irish Rail have announced cancellations and changes to their commuter timetable this evening due to problems with "colleague availability."
Last week Transport For Ireland said that "as a result of a high level of Covid-related staff absences" a number of services are not running to schedule.
And now the Omicron surge is affecting Irish Rail, as they have had to cancel and reschedule a number of services on the Maynooth commuter line this evening.
Irish Rail said on Twitter: "This is a short-term issue, as current COVID-19 levels and close contact public health compliance are affecting colleague availability."
The affected services are:
"16:01 and 16:12 Pearse-Maynooth combined, departing at 16:12.
"17:00 Bray-Maynooth deferred to 17:10.
"18:00 Connolly-Maynooth cancelled.
"16:59 and 17:10 Maynooth-Connolly combined, departing at 17:10.
"18:40 and 18:58 Maynooth-Connolly combined, departing at 18:48."
The General Secretary of the National Bus and Rail Union Dermot O'Leary told Dublin Live that on December 20 - last Monday - there were 56 Irish Rail and 101 Dublin Bus staff off work due to the virus.
He is calling on the NTA to reintroduce the 50% capacity limit on services and to realign the timetables to provide "surety" for passengers.
He said: "There's nothing more frustrating than someone waiting on the bus in cold weather or indeed a cold railway station, waiting on a train that may or may not turn up due to Covid-19 related illness.
"Whereas if you streamline or curtail the service, you have the opportunity to advertise it with some kind of surety."
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