The goal of occupational safety is to reduce the number of accidents at work and occupational diseases. One of the key indicators of the development of safety at work is the number of injuries at work on a certain number of workers in a country or community of states. That's why occupational health and safety must have a scientific approach in collecting data on injuries to have relevant information that no differ by way of collecting. For this reason, there must be a methodology for collecting data on occupational injuries. In the world, each country itself determines the methodology for reporting accidents at work, but most often applied is resolution of the International Labour Organisation (ILO), and the ESAW methodology applied in the EU. Since the Republic of Croatia joined the EU (2013) has committed to implement the ESAW methodology of collecting data on occupational injuries. All EU member states are required to collect data on occupational injuries according to the ESAW methodology in order to achieve equality of the data collected, and in order to improve safety at work by legal provisions and regulations in the countries members EU.