"Staying on the job five extra years lowers your risk of dying by ten percent." -- on a local TV newscast.
The point here is that early retirement causes one to die earlier, even if you're healthy. That seems believable.
But we all have, of course, a one hundred percent risk of dying.
Presumably they meant that it lowers the risk of dying by ten percent per year. I don't want to try to get more data from that, though, because even that's a big assumption; the numbers in this context might be meaningless.
What I would want is a statement of the form "staying on the job five extra years raises your life expectancy by X years". (For what it's worth, a bit of poking around the internet doesn't give a value for X, but does give the impression that some people think X is negative.)