Enda Kenny says it's extraordinary that workers at Greyhound Household are being asked to take - what they say - is a 35% paycut.
70 staff who collect rubbish for Dublin City Council are set to strike from Friday, after holding a one-day unofficial work-stoppage earlier this month.
The Taoiseach's also reacted to claims in the Dail he's planning to contact the National Employment Rights Authority, and the Labour Relations Commission over the row: