# Social Security Act 1975, The four classes of contributions




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Source: https://www.legislation.gov.uk/ukpga/1975/14/part/I/crossheading/the-four-classes-of-contributions (the official version)
Page: https://openlegislation.uk/social-security-act-1975/part-I/crossheading-the-four-classes-of-contributions
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.