Fine Gael is planning to expose possible divisions in the Government later this week by moving a Dáil motion calling for the scrapping of plans to introduce café bar licences.
The Private Members' motion will be debated in the Dáil on Tuesday and Wednesday before it is voted upon.
The Minister for Justice, Michael McDowell, is due to address the Fianna Fáil parliamentary party on the proposals on Tuesday.
40 members of Fianna Fáil are reported to have signed a petition calling for the plan to be dropped.
Fine Gael has called on Government TDs who are unhappy about it to support their motion.
