Related info

Main source: SSA (Social Security Administration of the United States); ISSA (International Social Security Association). Social security programs throughout the world (Washington, DC and Geneva ): The Americas, 2013; Europe, 2012; Asia and the Pacific, 2012; Africa, 2013. Available at: http://www.ssa.gov/policy/docs/progdesc/ssptw/ [6 June 2014].

Other sources: 

ILO National Legislation on Labour and Social Rights database (NATLEX) available at: http://www.ilo.org/dyn/natlex/natlex_browse.home [6 jun. 2014].

—. ILO database of labour statistics (ILOSTAT). Available at: http://www.ilo.org/ilostat/ [6 Jun. 2014].

—. ILO Key Indicators of the Labour Market (KILM), 8th edition. Available at:  http://www.ilo.org/empelm/what/WCMS_114240/lang--en/index.htm [6 Jun. 2014].

National statistical offices. Datasets and reports from national labour force surveys or other household or establishment surveys (link to national statistical offices websites available at: http://laborsta.ilo.org/links_content_E.html#m2 [6 Jun. 2014].