The Irish Congress of Trade Unions (ICTU) has said that workers in Ireland should not be placed in "unconscionable situations" of facilitating trade with Israel or handling Israeli goods while attacks on Gaza continue.
ICTU has called on the Government to step up its response by ending trade with Israel.
Congress has written to Taoiseach Micheál Martin and British Prime Minister Keir Starmer urging their respective governments to do more and introduce real sanctions on Israel.
ICTU said that it and other unions are reviewing procurement and pension investments to ensure non-complicity in Israel's actions.
"While Ireland has made diplomatic efforts within the EU, the failure to implement real sanctions means some trade union members fear being complicit in Israel’s violence," said ICTU General Secretary Owen Reidy.
"We would not be surprised if some of these develop into flashpoints of conscientious objection by some workers"
"As a movement, we are clear: we will not be found wanting in protecting our members where an employer seeks to discipline or dismiss a worker in such circumstances," Mr Reidy said.
On Thursday, 18 September, unions will join the Ireland-Palestine Solidarity Campaign for a protest outside the Dáil calling on the Government to step up its response to Israeli aggression.