Data about the ‘key’ benefits for clients are merged together to create “Client Group” data, providing information about whether a client is on more than one benefit from the following list: Bereavement Benefit, Carer’s Allowance, Disability Living Allowance, Employment and Support Allowance (from November 2008), Incapacity Benefit/Severe Disablement Allowance, Income Support, Jobseeker’s Allowance, Pension Credit, State Pension and Widow’s Benefit. Benefits are arranged hierarchically and claimants are assigned to the topmost benefit which they receive.