This Act amends the Social Security Act 1964, as part of a long-term reform aimed fundamentally to shift the focus of the benefit system towards encouraging beneficiaries to move into paid work.  The Act introduces a new system of main benefits with a work focus (including the jobseeker support benefit), delivers a new approach to working with sick or disabled beneficiaries, and lays down drug testing requirements for beneficiaries referred to job or training programmes with financial sanctions.  The Act also uses the welfare system to reinforce social norms relating to children's health and education by placing obligations on beneficiaries with children, and it provides for the stopping of benefit payments to beneficiaries under a warrant for arrest.