This paper was originally published as Department of Social Security Research Paper No. 20 Developments in social security: A compendium of legislative changes since 1908 in 1983, and has since been reprinted to accompany the publication of the 1983-2000 compendium. Arranged by payment type, this volume provides details of some legislation other than that in the Social Security Act and its predecessors, in particular taxation changes relevant to social security.