Pensions that cone in the form of periodic payments generally don't trigger the penalty, whether it's pension income or taking income from retirement savings before age 59.5 through Rule 72t.
The penalty would likely come into play only if you took a lump sum payout of the pension and didn't roll it over into an IRA or such -- not if you merely take monthly income from it.
"Hey, for every ten dollars, that's another hour that I have to be in the work place. That's an hour of my life. And my life is a very finite thing. I have only 'x' number of hours left before I'm dead. So how do I want to use these hours of my life? Do I want to use them just spending it on more crap and more stuff, or do I want to start getting a handle on it and using my life more intelligently?" -- Joe Dominguez (1938 - 1997)