I have read that in a lot of municipalities in a few decades police and firefighters will use up 100% (and more) of the budget once they have to pay out pension

I have read that in a lot of municipalities in a few decades police and firefighters will use up 100% (and more) of the budget once they have to pay out pensions. A lot of them go into retirement at around 50 and will probably live for another 30-40 years more.