In the United Kingdom there are two forms of unemployment benefit: Job Seekers Allowance (income-based) and Job Seekers Allowance (contribution-based). If a claimant has paid enough National Insurance contributions of the correct class then they are entitled to contribution-based benefit. If not, and they have a low or no income they receive income-based benefit. Benefit levels are lower for those under 25 and to remain receiving benefit a claimant has to visit the Job Centre every two weeks (so called signing on).