The Government has written to the head of Irish Water, John Tierney, asking him to explain the bonus arrangements for 29 staff members.
It's emerged the workers qualify for bonuses of 15 per cent of their salaries.
The figures were revealed by the Department of the Environment, following a question by Labour TD Kevin Humphreys.
It also emerged that 29 staff are being paid more than 100 thousand euro.
Deputy Humphreys says there are still a lot of questions that remain unanswered:
