This paper goal is to define a method to measure the index of restrictiveness of competition law focused on Latin America and the Caribbean and to determine if there are statistically significant causal relationships between competition law goals and the restrictiveness of CL. The index is defined based on the patterns and characters of statutory law and to determine what the incidence of the legal arrangement of competition law institutions in agent's perceptions of the institutional environment of competition is. Regarding causal relationships among competition law and competition intensity Results are not successful to determine a relationship of restrictiveness of competition law and subjective or objective measures of competition intensity. Further research is necessary as measures of competition intensity and policy perceptions are highly correlated.