A claim is classed as working age if the applicant and their partner are under the State Pension Credit age. The age that you are classed as being a pensioner is gradually increasing from 60 to 68 over the years through to 2020. By 6 March 2013 you will be classed as being of State Pension Credit age if your birthday falls before 5 April 1951.
This link will take you to the Governments Pension age calculator:
page ref: SDDC 604