Am 55 and due to ill health have been working part time for the past 7 years. HR mentioned that retiring early is an option but I don't know how many added years I might get when only working part time. Am class D ,(pre 95) and have about 27 years so far( I think,not quite sure). From what I've read, I might be entitled to 5 years to bring me upto age 60 , but is this only going to be 2.5 added years because I'm working part time ?