Yes, as the others say, provided he/she had paid enough NI contributions in the qualifying period (which may be some time ago - something like the 2011/12 tax year) then CBJSA can be paid. It's about £74 a week.
Also, they need to be actively seeking work and will be expected to complete logs of job searches, applications, progress. Any income from pensions may lead to a reduction in the JSA.
Receipt of CBJSA doesn't entitle you to things like free dental treatment or free prescriptions