If you're single or in a couple, and have no children, you can qualify if: 1  you are 25 or over and you work at least 30 hours a week, or. 2  you are 16 or over and you work at least 16 hours a week and you are disabled and you get a qualifying benefit, or. 3  you are 60 or over and you work at least 16 hours a week.