The couple will be among 10,000 correctional staff in NSW and the 25,000 frontline officers across Australia, who will mark National Corrections Day this Friday, January 17.

Minister for Corrections Anthony Roberts said corrections staff do an important job rehabilitating offenders and keeping the community safe, with this year's We Are Family theme focusing on the camaraderie of Corrective Services NSW.

To mark the occasion, staff across the state will be holding morning teas and lunches, and raising funds for chosen charities, including NSW Rural Fire Service, Australian Red Cross and the NSW Wildlife Information, Rescue and Education Service (WIRES).

CSNSW staff have been deeply affected by the NSW bushfires with many officers volunteering for the NSW RFS and NSW State Emergency Service and unfortunately, some staff lost their homes and property.

In the lead up to National Corrections Day, CSNSW discovered about 200 family units working in the organisation - and there are likely more.

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This is mostly due to parents recommending the career to their children or people meeting their life partner on the job.

Peter and Robyn Presdee have more than 40 years' experience working in welfare and social justice and say they're grateful for the opportunity to help inmates heal and cope with life in prison.

Peter, an ordained Catholic deacon, joined the prison at Nowra in 2010 as its multi-faith chaplain serving inmates, staff and prison visitors.

Robyn joined him in 2012 after briefly providing spiritual guidance and support at Berrima Correctional Centre.

"As people of faith we know God has a plan for our lives and we have been blessed seeing that plan unfold," Robyn said.

"We wouldn't have chosen this career, but it's the perfect role for us. We have the opportunity to be an agent of healing to people, no matter their walk of life."

Peter said he and Robyn try to develop inmates' real potential and help them find meaning in life.

"I find my own peace and meaning in life is enhanced if you can help people," he said.

"Our job is to get inmates to think: 'I'm not coming back here'. We ask them: 'what are you doing with your time here to make sure you don't come back?'"

For Robyn, the CSNSW family is hugely important to the work they do in prison.

"Your work family is something to treasure and holds you up," she said.

Peter, 72, says he doesn't think he'd still be working if he didn't have Robyn, 64, at his side.

While dubbed by colleagues as 'the odd couple', they complement each other.

"We bounce off each other and it's good to have someone to talk to, which is very important in this role," Robyn said.

Corrections Day was established by Corrective Services NSW in 2017 before it was adopted nationally and by New Zealand in 2018, with Mr Roberts saying correctional staff do vital work rehabilitating offenders, in an environment that is often "challenging and volatile."

"Every day they work together like one big family, to support one another and meet the challenges of the job," he said.

"We saw this just recently during the bushfire emergency, as staff banded together to assist each other and their communities.

"Like all families they have different characters and perspectives, but it's critical in a correctional environment that they come together to work as a close-knit team - and I'm proud to say Corrective Services NSW staff do a fantastic job of that."

CSNSW Commissioner Peter Severin praised staff for their dedication to their work and ongoing commitment to their communities.

"I'm proud to say our corrections staff are some of the world's best," he said.

"Corrections is a tough environment and our staff are performing difficult work, which is mostly unseen by the rest of our community.

"Our teams work closely together and are also committed to their communities, fundraising and assisting where possible in times of need."