I'm not sure about this but those that are on incapacity benefit at the moment will be put onto ESA (Employment and Support Allowance) sometime soon and those will only be able to claim that for 12 months then automatically put onto Jobseekers allowance. If you are still sick and can't find employment after 12 months you would also lose some housing benefit as you move into a different type of JSA.
http://www.dailymail.co.uk/news/arti...s-benefit.html (sorry it's a Daily Mail link, but there are others stating the same).