A review will get under way into the Dáil 'fobbing in' system which is used to record TDs' attendance so that they can claim allowances and expenses.
The Ceann Comhairle, Seán Ó Fearghail, said it is "vital to restore credibility and public confidence" in the system following a number of recent controversies.
The review will examine practices in other parliaments around the world and will include the views of all political parties or groups.
It will also seek the views of the Minister for Public Expenditure and Reform, Paschal Donohoe. It is due to make recommendations in January.
The review was agreed by the Houses of the Oireachtas Commission - the body that oversees the running of Leinster House - at its meeting this morning.
It follows concerns raised by one of its members, Social Democrats TD Catherine Murphy, who wrote to the Ceann Comhairle in recent days calling for the system to be stood down.
She said that recent media reports about the system of recording TDs' expenses "brings the entire system in to disrepute and has a consequence for the Dáil itself and indeed for each deputy".
The rules require TDs to clock in for 120 days of the year in order to claim the full Travel and Accommodation Allowance which costs the public purse around €2.9m a year.
For every day they miss, the overall expenses payment is reduced by 1%.