Frontline workers say they expect thousands to turn out in Tallaght in Dublin this evening for a rally against pay cuts.
It comes as talks get underway this morning between union and government representatives in a bid to hammer out a new deal on public sector pay.
Gardaí say they are withdrawing "goodwill" gestures from next Friday, and will cease to use their own cars or phones for duty.
John Redmond from the Association of Garda Sergeants and Inspectors, which is part of the 24/ 7 Frontline Alliance, said he hopes this evening's protest would send a clear message to the Government.
"They need to realise that we are providing essential emergency frontline services…Our people are out facing dangers day in, day out, during the night and on weekends," he said.
" The idea that Sunday hours or working nights is no different to working days - it's just not true."
This evening's protest will take place at 6pm in the National Basketball Arena.