That's what he's done with the strike, which quite a few of you have asked about.
Patrick, 11, from Warrington wonders why the government has not reached a deal in the dispute.
Rachel, 10, from Runcorn, says the firefighters should be given more money.
Well, the government says the firefighters could get more money - but they must change the way they work.
The prime minister also warns that if all their demands are met, it would cause problems for the economy.
As for the firefighters, they say they have not been offered enough money. And they are not happy about some of the ideas to change their work.
It's a serious situation, both for the country and the government.