Middle-ranking gardai are gathering on Monday to decide if they will reject outright the public sector pay deal.
The fall-out from the Croke Park II agreement will dominate the Association of Garda Sergeants and Inspectors (Agsi) annual conference.
More than a third of the 27 motions to be debated at the three-day talks in Sligo focus directly on pay and conditions.
John Redmond, Agsi general secretary, said the depth of feeling over the cost-cutting plan hammered out between trade unions and the Government will be "palpable" during the conference.
"Our members are in limbo and there is a deep sense of worry and concern around pay and allowances, so much so that it will totally dominate conference this year," he said.
One motion will call on the Agsi national executive to reject the Croke Park II deal, while others flag up the "detrimental and damaging effect" to the welfare and morale of the force.
Mr Redmond said middle-ranking gardai would be looking to Justice Minister Alan Shatter and Garda Commissioner Martin Callinan to alleviate some of their anxiety.
Up to 150 delegates representing 2,000 Garda sergeants and inspectors from around the country are expected at the talks.
Guest speakers will include Mr Shatter, Mr Callinan, Sligo mayor David Cawley and Independent TD Stephen Donnelly.