The WGPSS is a mechanism responsible for analyzing the national reports provided for in the San Salvador Protocol. This Group became operational in 2010 - following the parameters established in resolution AG/RES. 2262 (XXXVII-O/07) - with the designation of all the experts, and was entrusted with the task of developing progress indicators. Its current members are:

The Protocol of San Salvador is the additional protocol to the American Convention on Human Rights to ensure Economic Social and Cultural Rights. It was adopted in 1988 and entered into force in 1999.

The rights contemplated in the Protocol are: right to social security, right to health, right to education, right to work and union rights, right to adequate food, right to a healthy environment, and right to the benefits of culture.

National Reporting System and Support to States Parties

The States Parties present periodic reports regarding the progressive measures they have adopted to ensure the guarantee of ESCER following qualitative and quantitative progress indicators that allow an evaluation of objective information on the rights contemplated in the Protocol. This methodology for measuring compliance with State obligations also allows evaluating progress in the design and implementation of public policies. These reports are evaluated by the Working Group of the Protocol of  San Salvador (WGPSS), which sends them its recommendations and comments. In this way, a support system is established that aims to ensure the advancement of compliance with ESCER in the region with a focus on equity and social justice.

It has been ratified by 18 States: Argentina, Bolivia, Brazil, Chile, Colombia, Costa Rica, Ecuador, El Salvador, Guatemala, Honduras, Mexico, Nicaragua, Panama, Paraguay, Peru, Suriname, Uruguay and Venezuela.