Nottinghamshire Fire and Rescue Service has encouraged residents to take care ahead of bonfire night celebrations this weekend when planned strikes will reduce services.
The Fire Brigades Union has planned industrial action starting at 6pm on Friday following ongoing disputes with the government about pensions.
Contingency plans have been set up so that 999 calls will be answered, but response times will be much slower than usual.
Chief fire officer John Buckley thinks the four-day strike, which ends at 6pm next Tuesday, marks a significant increase in the amount of industrial action taken, but has warned that resources will be greatly limited.
He added: “The public has done a great job in helping to keep the number of incidents to a minimum during previous periods of industrial action so far, and the advice we are giving to them this weekend remains the same as it has throughout the dispute: please take extra care to keep yourself and your family safe this weekend, and only dial 999 in a genuine emergency.”
During the industrial action, businesses are reminded automatic fire alarms will not be responded to unless there is a 999 call after to register a genuine emergency.