I have only really looked at Finance programs, but this is what I have found. Unlike a MBA, top programs (such as MIT) often care little about work experience. They are looking to develop great prof's and researchers, so unless you work exp. is an indicator of your research ability then it is not really an asset when applying to top programs. I think that as you get to lesser schools this rule applies less.
I can't say anything about your chances for admissions though, as like I said above I have only looked at finance programs.
Good luck though.