Leigh began working at McArthur River Mines as an operator in 2011. She started working on trucks then worked her way up to operating excavators and production loaders. She joined the Emergency Response Team and was the only female team member of the 2014 MRM Northern Territory Australian Emergency Response Competition Team.

She has qualification as an EMT-Advanced and holds Certificate IV Training and Assessment, this has enabled her to better treat co-workers and the wider community members in emergency situations as a medic. When she is at work she is on-call 24/7 for emergency response. In 2017 she has taken on the role of Relief Emergency Response Coordinator.