The Justice Minister has said citizenship issues arising from a recent court ruling are being dealt with as an "urgent priority".
It follows a recent High Court ruling that has drawn concern among some involved in the citizenship process.
The case was taken by Roderick Jones, an Australian national who has applied to become a naturalised Irish citizen.
Under current rules, a person must have "one year's continuous residence in the State" immediately before applying to become a citizen.
Typically, the minister allows for six-weeks discretion when determining 'continuous residence' - and "possibly more" in exceptional or unavoidable circumstances.
Mr Jones, who works in the university sector here, was outside Ireland for 100 days - 97 on holiday and three for work reasons.
After Mr Jones' application was rejected, he took a case against the Justice Minister.
In a High Court judgement earlier this month, Mr Justice Max Barrett ruled that Mr Jones' application "by law, just has to fail".
The judge said the decision "may seem unfair" in a world where people regularly travel for work or holidays - including academic staff who enjoy longer vacation periods.
However, he pointed to the dictionary definition of continuous meaning 'unbroken and uninterrupted'.
He added: "If that is perceived to yield unfairness in practice - and again there may be perfectly legitimate reasons why the Oireachtas has used the word 'continuous' (and the phrase 'continuous residence') with all the consequences that flow therefrom - the cure for any (if any) such unfairness as is resulting is not to be found in the law-courts; it lies in the gift of the legislature."
In a statement today, Justice Minister Charlie Flanagan acknowledged the ruling has "caused concern and may have been unsettling for people in the citizenship process".
He added: "I want to reassure people that my officials are carefully studying the ruling in consultation with the Attorney General’s Office.
"This issue is being dealt with as an urgent priority and I will take any necessary action to resolve it.”