A major review of support staff with the West Yorkshire Fire and Rescue Authority will bring savings of £2.5 million.
Staff without a job in the new structure will face compulsory redundancy next March bringing the total reduction to 83.
An earlier re-structure also hit support staff and the total of non-operational posts lost since 2010 will be more than 100 - a third of the support staff workforce.
Assistant Chief Fire Officer Martyn Redfearn said the authority was struggling with funding and concentrating resources on core emergency services.
“We shall be slimmer and more efficient as a result of these latest changes with more work moved onto the operational staff,” he said.
With the potential loss of a further £12 in funding between now and 2014/15 he could not rule out more support job losses.