The Economic and Social Stabilization Fund (ESSF) is a state-owned fund in Chile aimed at stabilizing the finances of the Central Government in face of potential "abrupt changes in the economic cycle and extraordinary events". It was created in 2007 by the merger of the former Copper Stabilization Fund and of the stabilization resources created by Decreto Ley N° 3.653 of 1981. The fund is also used yearly to amortize part of the public debt and to add to the Pension Reserve Fund. The fund is subject to the Fiscal Responsibility Law.