It's expected to be completed by the end of the year.
Ethics legislation is to be reviewed by the Department for Public Expenditure and Reform.
Cabinet approved the move today, with Minister Michael Mc Grath stating it will be the first step in delivering on a commitment made in the programme for government.
The review will respond to outstanding recommendations of the Moriarty and Mahon tribunals and more recent developments, such as the Hamilton report recommendations on preventing economic crime and corruption.
It's expected to be completed by the end of the year.

Two People Arrested In Connection With Fatal Stabbing Of Qayyum Balogun
Man Sentenced To 31 Years In Jail For Murder Of Pregnant Girlfriend
Yellow Thunderstorm Warning Issued For Kildare
Bang-Up Cross In Carlow Remains Closed After Multi-Vehicle Crash
Cabinet Set To Approve New Emergency Broadcast System Today
"Don't Be On Those Red Bulls" : Expert Gives Top Tips As State Exams Begins
Number Of Births Registered In Ireland Declined By Almost 18 Per Cent In Last Ten Years
Report Calls For Fairer Transport System In Ireland