This essay contains the study of various projects that have been executed for a period of time of four months (this is the time that I have dedicated to carry out this essay) with the aim of analysing the methodology of the Safety and Health Coordination used during the execution of the construction site and making a proposal of how to improve that methodology. Due to the actual economical situation, I have had to base the analysis on three different building works, as one of the was stopped two months after it started. The building works that are the object of our study are: ‐ Expansion and reformation project of the industrial building ‘PDL’, with the construction of a slab between the ground floor and the current slab the first floor. ‐ Project for a photovoltaic solar installation connected to the electrical supply in the ceiling of the industrial building ‘PDL’. ‐ Project for the execution of the FC Barcelona ‘Masia’. The first and the second construction works take place during the same period of time and ion the same location, but even so they are independent. The property developer of these two works is the ‘Diputación’ of Barcelona, which designates the same Safety and Health Coordinator for both projects in the execution phase. Therefore, there are two different construction works that share the property developer and the Safety and Health Coordinator, although each has its own Project Management Team. The analysis of the FC Barcelona ‘Masia’ construction work has been based only on the realization of a photographic monitoring of my visits to the construction works (that take place at least twice a week). In order to carry out the Safety and Health Coordination in an organized and efficient way, several projects have been created. As to make the essay clear I have highlighted in blue everything that I have done in the company to carry out the Safety and Health Coordination; and in black, my proposal of methodology for the Safety and Health Coordination.