MWW,
Since no one wants to give answer to your question, I think I know what you're trying to find out so I'll take a stab at it.
For a US ramp agent that is in the iam pension plan, if you are parttime you'll receive approx. $38 per month. Fulltimers will get approx $78 per month. Both rates depend on how many years that you have in the pension plan. If you were a fulltimer and came into the plan on Feb 17, 2006, and you have 20 years with the company you would not be eligible for anything. On Feb 16, 2007 you would have one year of eligibilty under the plan. If you retired at that time you would receive $78 a month, because you were only in the plan for one year. You would receive $38 a month if you are a parttimer. The kicker is that you only get what you have in once you retire.
If you were in a 401k that the company matched at say 6%, the company would be giving you approx. $100 every paycheck right now. Would you rather have $78 a month, $936 a year from the iam when you retire? Or $200 a month, $2400 per year from the company right now? The kicker is that it goes into your 401k account which can fluctuate. Hands down I'd take the 401k in a heartbeat. Plus you get to manage your own account.