The organisation which represents rank and file gardaí claim the new regulations have come as “a bolt from the blue”.
Aimed at obtaining substantial savings in the area of public service sick leave entitlements, the regulations were due to come in to force from today.
The legal proceedings are against the Minister for Public Expenditure and Reform, Brendan Howlin, over the implementation of provisions of the 2014 Public Service Management (Sick Leave) Regulations.
Gardaí claim the measure has been brought in without proper consultation and the regulations are irrational and incomprehensible.
It is expected that the three other Garda representative bodies, the AGSI, as well as the bodies that represent Garda superintendents and chief superintendents, will bring similar proceedings in the coming days.
In its action, the GRA wants the High Court to make an order quashing a decision take by Mr Howlin bringing in the new sick leave regulations.
Mr Justice Michael Peart yesterday granted permission to bring the legal challenge.
The judge also gave lawyers for the GRA permission to seek an injunction preventing the minister from bringing in the regulations, pending the outcome of the action. That application will come before the High Court later this week.
Feichin McDonagh, SC for the GRA, said it was opposing the regulations on grounds including that the new regulations were incomprehensible.