NSW Rural Fire Service commissioner Shane Fitzsimmons has rejected calls for his members to be compensated for their work in the ongoing bushfire crisis, saying it would undermine the spirit of volunteerism underpinning the RFS.

"Don't do the volunteers a disservice by suggesting that you're going to pay them, because then they're no longer volunteers and that's absolutely the sentiment that I'm getting loud and clear everywhere I go," Mr Fitzsimmons said in response to calls from Labor and an organisation representing thousands of NSW volunteer firefighters.

Prime Minister Scott Morrison is briefed by NSW RFS Commissioner Shane Fitzsimmons in the NSW Rural Fire Service control room in Sydney on Sunday. Credit:AAP

Opposition Leader Anthony Albanese said Mr Fitzsimmons was "doing an extraordinary job" but reiterated his calls for firefighters to be compensated, citing a payment the Keating government made to firefighters who had been in the field for more than seven days during fires in 1994.

"If someone has not had an income for a period of months because they have been fighting fires, and we met someone in Bilpin who had been fighting fires since September every day, people who don't have an income for a period of three months, it is unsustainable," Mr Albanese said.