The need to protect human health was the driving force behind the establishment of the Vienna Convention for the Protection of the Ozone Layer and the Montreal Protocol on Substances that Deplete the Ozone Layer (1987). The treaties are the international response to the significant threats to human health and the environment posed by the continued use of ozone depleting substances (ODS) in the global economy.
UN Environment Programme is an Implementing Agency of the Multilateral Fund for the Implementation of the Montreal Protocol. OzonAction is part of UN Environment Programme's Law Division and serves 147 developing countries through the Compliance Assistance Programme.