The present document on Introduction to OP-ICESCR is an addition to the on-going work on the Human Rights Framework on ESC rights. It covers some basic information on the objectives of the OP and the key provisions dealing with mechanisms and processes. Much emphasis is given to highlighting the expansion of the normative framework through the works of the Committee under the ICESCR. The document highlights a few of the important standards developed, interpreted and applied by the Committee under the mechanisms provided under the OP. The document also mentions a few areas that need further study and analysis in order to understand the impact the OP-ICESCR mechanisms in domestic jurisdictions, particularly of the member states.