Worked 9 years and 11 months for UPS, mostly part-time. The last year employment was full-time. My pension buyout offer is only $34,009.85. My current age is 46. My start date is 2/21/2005 and my termination date is 2/1/2015 benefit start date is 12/1/2016. I have former co-workers with only 5 years vested part-time receiving more. Something isn't quite adding up. Any advise.