I've been advised from careers.stackexchange to post this question here as it's more financial than career advice.
I've received a job offer from a company and I'm looking to make a strong counter-offer. To make the strongest argument I'm trying to have as much information at my disposal. Salary, vacation and 401k matching have been factored in. However, I am having trouble with my pension and how to value it. The company I currently work for has a pension program (it's been frozen to no longer allow new employees to enter) while the prospective future company does not.
Due to my youth and years put into the program the amount of money seen from the aforementioned pension would be minimal currently; however, if I were to work at this company until retirement it would be a large chunk of money every month.
What is the best way to factor this in when making a counter-offer? By that I mean, when moving from a company with a pension to one without how do I determine its worth?