: First, our counterpart in Brazil, which oversees all labor safety inspections at a national level for all firms, elaborated a new strategy to decrease the accident rate of the firms under their supervision. A group of 1,108 firms in the same type of industrial sector was randomly separated into 3 different groups. The first would receive an inspection visit to check safety measures. The second, 6 months before the visit, would be provided with a training session, and then be visited by a safety inspector. Finally, there is a third control group that does not receive any of the treatments (nor visit or training). For the first 6 months of the intervention, we can compare the outcome of firms in the control group, those who received a visit and those who so far have only experience a training. In the last 6 months of the intervention, we can then compare firms who are in the control, those who recently received a visit and those who were trained and are now receiving a visit. This allows us to (at least in the short-term) to compare the control to visits and training on their own and then in the longer term to compare visits and their combination with training. This process is already being implemented by the Labor Ministry of Brazil as part of their administrative improvements and will be finished by December 2022.