IV Ibero-American Meeting of Experts on Surveys on Working Conditions and Health on March 16 and 17, 2017, in San José, Costa Rica. This meeting brings together 25 experts from Argentina, Chile, Uruguay, Brazil, Colombia, Ecuador, Peru, Panama, Costa Rica, Honduras, the United States and Spain to agree on a Manual of the CTESLAC Questionnaire, to discuss a first draft of the Field of the Survey and assess the proposal of the Indicators to monitor occupational health in Latin America and the Caribbean. This meeting has the support of the Pan American Health Organization (PAHO), which organizes a Workshop on Social Inequalities in Workers' Health (14 and 15) (see program).