Hundreds of people rallied in Middlesbrough last weekend against £6 million worth of cuts to Cleveland Fire Brigade.
The FBU says cuts would mean the loss of 130 full-time firefighter jobs, which equates to more than a quarter.
Five full-time fire engines will be replaced with part-time crewing.
Davy Howe, FBU secretary for Cleveland, said, “Teesside is more at risk from industrial fire than almost anywhere else in Europe.
“These cuts will mean slower response times and a far greater risk to the public and firefighters’ safety.”