Firefighters in West Yorkshire will go on strike on September 25 in a row over pensions.
The Fire Brigades Union (FBU) has said that the four-hour strike is a “warning shot to government”.
FBU general secretary Matt Wrack said: “This initial strike is a warning shot to government. Firefighters could not be more serious about protecting public safety and ensuring fair pensions.
“Governments in Westminster and Cardiff have simply refused to see sense on these issues.
“It is ludicrous to expect firefighters to fight fires and rescue families in their late 50s - the lives of the general public and firefighters themselves will be endangered.”
The FBU had previously said the current proposals would see firefighters who retire or are forced out of work at 55 losing about 50 per cent of their pensions.
Around 78 per cent of members balloted in England, Scotland and Wales voted in favour of strike action.
The walkout will take place for four hours, between noon and 4pm.