The Psychiatric Nurses Association has confirmed that it will undertake three further days of strike action next week.
In a move that will see 6,000 union members join the picket lines, the PNA say they join the INMO members and strike on the 19th, 20th and 21st of February.
Although the union has already took action in regards to an overtime ban, the latest move will see efforts ramped up as they will strike across the three days next week.
It is expected the scheduled strike action will cause widespread disruption to mental health services the HSE have warned.