The chief executive of the Rehab Group has defended her salary of €240,000.
Angela Kerins said the sum is less than others in similar positions can earn in the semi-state sector.
However, she refused to discuss why her salary for 2013 is €6,000 more than it was in 2010. She said the salaries of Rehab managers are set by outside consultants.
She said the board had final decision, and senior management has taken pay cuts in recent years.
"For well over a decade, all senior salaries of the Rehab group have been advised by independent assessment and set in the median," she explained.
"While the market median is the desired Rehab group position, I can tell you all that the group management team are at least 20% below the current market median for total remuneration, and have been for some years."
The median figure is the number that lies in the middle of a group of figures, halfway between the highest and lowest figure. It is different from the average of a group of numbers.
Kerins also said that her contract allows for earnings of 30% or more in bonuses - amounting to up to €80,000 - but that she chosen to waive her bonuses.