This year, 2011, is the 40th anniversary of work on chemicals safety at the Organisation for Economic Cooperation and Development (OECD). A special event to mark the occasion will be held at OECD Headquarters in Paris on 15th June. It will be attended by representatives of the governments of OECD member countries as well as other stakeholders. The event will reflect on the achievements of the work over the years but will also address future opportunities and challenges for the safety of chemicals. This event takes place also within the context of the 50th anniversary of OECD.