A group representing the fishing industry has said the Brexit Action Plan published by the Government today fails to deal with a range of issues immediately facing the sector.
The plan follows Britain's publication of draft legislation on how it wants to manage trade within its borders after Brexit.
The Killybegs Fishermen's Organisation has said State aid for fishermen will be imperative.
Chief Executive of the organisation Seán O'Donoghue said the plan "contains little new information and simply underlines the urgent need to secure a deal with the UK on fisheries".
Mr O'Donoghue said ensuring fishermen retain access to UK waters, as well as retaining the link with trade, "remains the number one priority".
The plan fails to set out what measures will be taken in the event of a no-deal scenario, he said.
"The Government does make clear that additional paperwork and delays in accessing UK ports will be part of the new reality, regardless of the outcome", he said. "State aid for fishermen will be imperative and it is disappointing that the guidance is not able to make clear what could be available in the sector in 2021".
The CEO of the Irish Exports Association has called on the Government to put a contingency plan in place for alternative shipping routes in getting goods to, from and through the UK.
Speaking on RTÉ's News at One, Simon McKeever said there is an "enormous level of concern" over the British government's draft legislation.
He said that even though the EU has introduced "green lanes" for agri-food, this "will not solve the problems of any blockages at UK ports and that delays in inbound supply chains in pharmaceuticals and metals are already being experienced".
Mr McKeever also said he is worried about financial packages announced by the Government today because he said senior bankers have reported that there will be "very little intention by banks to lend to viable businesses unless they get 100% guarantees".
He urged business owners to undertake and/or retake the IEA's education and training programme to ensure that they are prepared for Brexit.