Unemployed people suspected of suffering from alcoholism or drug addiction will have their benefits cut if they refuse treatment for their condition, the work and pensions secretary, Iain Duncan Smith, will signal on Wednesday. In a sign of the government's new benefits regime, which lies at the heart of Duncan Smith's cost-cutting welfare changes, staff in Jobcentre Plus offices will be encouraged to cut the jobseeker's allowance of claimants who reject treatment for addiction. The new rules will come into place in October 2013 when the universal credit, which is designed to wrap benefits into one payment, is introduced. A new claimant contract lies at the heart of the universal credit reforms. Claimants will have to sign a contract in which they agree to look for work in exchange for...