Family members of Pfizer's staff in Ireland will be offered the Covid-19 vaccine, under an independent programme.
The company says the doses are separate to the supply provided to the government for the general population.
Immediate family and household members of staff over 60 will be offered the jab first from mid-May.
Pfizer employs 4,000 people in Ireland including at it's facility in Ringaskiddy.
Sinn Féin's health spokesman, David Cullinane, says the programme must be fair.
"If Pfizer are making extra vaccines available, I think you need to demonstrate that this will not confer any additional advantage.
"And while they do say that it will be rolled out in line with the age cohorts, they also in my view need to demonstrate that there will be no unfair advantage and that simply because you are related to somebody it doesn't mean that you should get any of the vaccines speedier or quicker than anyone else."
