Directors of the Rehab Group have begun a meeting in Dublin on whether to reveal the salary of chief executive Angela Kerins.
Kerins' pay has not been disclosed since 2011, when it was revealed to be €234,000.
The charity has been under pressure to reveal the pay of its senior managers as part of the HSE's investigations into how various agencies are spending public money.
However, the government has admitted that it cannot force Rehab or other similar agencies to enforce its own policy on public pay.